ATEC Alphatec Holdings, Inc.

XNAS 10.86 Delayed
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Stock quote, options chain, IV rank, technicals, AI analysis, and institutional ownership. Iron condor setups Expected move IV rank history Fibonacci levels Insider trading

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ATEC $10.86 —
Key stats
$10.86
Pre-market $10.90 +0.37%
52-Week Range
$6.82 – $23.29
YTD
-47.69%
IV Rank (30D)
64.18
Straddle Price
$2.12
P/C Vol Ratio
1.08
Market Cap
$1.7B
Open
$10.72
Day Range
$10.72 – $11.10
Volume
1,694,347
Prev Close
$10.86
Fair Value
MODEL: LONG

A blended fair-value estimate combining up to six valuation methods. Each method is weighted by how well it fits the company — DCF down-weights for unprofitable names; DDM only fires for steady dividend payers; comparables down-weight when peer multiples disagree.

  • DCF (quality-aware) — projects free cash flow with a horizon that scales to business quality. True compounders (quality 6/6) get 10 years explicit + 10 years fade before terminal; cyclical/struggling names (quality 0-1) get a 5-year terminal cliff. Quality is scored from ROE, gross margin, growth, FCF margin, debt load, and FCF consistency — the same factors that drive market premium for compounders.
  • Market-Implied Growth (in Model Inputs) — reverse-DCF that answers "what growth rate is the market pricing in?". Lets you sanity-check the deviation: if implied growth is plausible for the business, the model's bearish flag may be wrong; if implausible, the market may be over-extrapolating.
  • DDM (Gordon Growth Dividend Model) — values the stream of future dividends. Only used when trailing yield ≥ 2% and dividend payments are stable — below that the dividend is a token payout and Gordon (which values only the dividend stream) systematically underprices growth names, so those route to DCF + comparables + market anchor instead.
  • P/E, EV/EBITDA, P/B, P/S — applies the peer-group median multiple to this company's per-share metric. Peers come from the same set as the "Related symbols" card. Earnings/sales metrics are forward-tilted by the company's recent revenue growth (capped at 25%) so they're comparable to peers' growth-embedded multiples — mimics how analysts use NTM rather than TTM. Per-multiple weights are biased by company quality (e.g. P/B down-weighted for asset-light tech).
  • Market Anchor (SMA50) — the 50-day moving average, weighted by recent trading-range stability (tighter Bollinger bands → higher weight). Captures information fundamentals miss (forward consensus, sentiment, supply/demand) — but only when recent trading is steady enough that the market has converged on a view. During wild breakouts or breakdowns the anchor's weight collapses.
  • Options Expected (B-L 30d) — the risk-neutral expected stock price at 30-day options expiration, derived from the full implied-volatility surface via Breeden-Litzenberger (second derivative of call price wrt strike → implied PDF, then E[S_T]). Forward-looking, captures all options-implied information (smile, skew, term structure) in one number. Weighted by chain liquidity. SP500-only at present (pre-computed daily). Backtest evidence: adds modest alpha across most bucket × holding combos.
  • Blended value — weighted average. Confidence reflects how many methods fired and how tight peer dispersion is.
  • Deviation pill — green when blended FV ≥ 10% above current price (undervalued); red when ≥ 10% below; grey otherwise.
10-yr Treasury (rf)5.15%
Beta vs SPY1.12
Cost of Equity (CAPM)11.29% (VRP-adj)
WACC9.86%
Volatility Risk Premium+55.9pp (IV − HV30), ERP adj +50bps
Effective Tax Rate21.0%
Rev. Growth (YoY, DCF input)+8.7%
DCF Horizon10 years explicit + fade
Forward Tilt (NTM/TTM)×1.09 (applied to P/E, EV/EBITDA, P/S)
Free Cash Flow (TTM)$0.0B
Return on Equity (TTM)911.4%
Book / Price-0.7%
Gross Margin (TTM)70.8%
FCF Margin (TTM)0.3%
Quality Score3/6 — normal (10y DCF)
SMA 50$10.00 (Market Anchor value)
SMA 20 / Bollinger Mid$10.46
Bollinger Width / SMA20131.0% (drives anchor stability)
Net Debt$0.4B
Market Cap$2B
Peers used for multiples: ABT, DXCM, GH, ISRG, PEN, RARE, UFPT, WST
60-Day Conviction
85%
20-Day Fair Value
≈ by Nov 20, 2026
ACTIVE
$10.99
α +1.2% rank 100%
conviction
69%
40-Day Fair Value
≈ by Dec 21, 2026
ACTIVE
$11.14
α +2.6% rank 99%
conviction
76%
60-Day Fair Value
≈ by Jan 19, 2027
ACTIVE
$11.21
α +3.2% rank 99%
conviction
85%
MethodImplied PriceWeightDetail
DCF $-2.26 0%
DDM (Gordon) n/a 0%
Peer P/E n/a 0% median 40.6× · 6 peers
Peer EV/EBITDA $4.68 60% median 26.6× · 6 peers
Peer P/B n/a 0% median 8.4× · 6 peers
Peer P/S $42.62 40% median 7.4× · 8 peers
Market Anchor (SMA50) $10.00 0% stability 0% (BB-width)
Options Expected (B-L 30d) $10.56 0% 6 strikes · skew -0.05
As of 2026-10-22 · updated
About
Industry (SIC)
SURGICAL & MEDICAL INSTRUMENTS & APPARATUS (3841) · industry map
Exchange
XNAS
Market Cap
$1.7B
Employees
913
List Date
2006-06-02
CIK
0001350653
Next Earnings
2026-10-29 (After-Close)
EPS Forecast
($0.07) (3 est.)
Headquarters
Carlsbad, CA
Homepage
https://www.atecspine.com

Alphatec Holdings Inc is a medical technology company focused on the designing, development, and advancement of products for the surgical treatment of spinal disorders associated with disease and degeneration, congenital deformities, and trauma. The company's spine approach technologies include Posterior Cervical Fusion, Anterior Cervical Discectomy and Fusion, Lateral Interbody Fusion, and Posterior Lumbar Interbody Fusion among others. Its procedural offerings are designed to address the underlying causes of spinal pathology by advancing the three fundamental objectives of spine surgery: (1)…

Summary
—
composite
—
No summary data available for this symbol yet.

Each spoke is this symbol's rank within its sector (0–100; the dotted ring marks the sector median at 50). Higher is more constructive for a long. One spoke — News sentiment — is an absolute reading, not a sector rank. Grayed spokes have no data. A fuller shape is a summary, not a recommendation.

Chart
Seasonality
Month'21'22'23'24'25'26Avg
Jan5.98%-12.52%10.06%8.35%30.13%-28.56%2.24%
Feb6.29%6.68%11.77%-19.48%9.34%-6.00%1.43%
Mar-4.53%3.88%3.38%2.76%-17.36%-19.23%-5.18%
Apr2.57%-15.83%-8.61%-9.60%8.93%-13.32%-5.98%
May-8.92%-30.25%2.85%-25.13%12.39%-25.70%-12.46%
Jun5.44%-7.50%17.36%10.00%-9.76%15.64%5.20%
Jul-3.15%12.87%0.45%1.20%-3.20%6.91%2.51%
Aug-2.69%2.15%-8.09%3.92%15.47%-7.68%0.51%
Sep-17.97%15.00%-20.18%-18.24%-7.27%12.05%-6.10%
Oct-6.83%12.04%-27.03%48.96%35.93%9.70%*12.13%
Nov-9.39%0.49%25.21%29.22%16.90%--12.49%
Dec6.82%14.99%20.11%-10.09%-4.19%--5.53%
Total-26.15%-9.63%13.45%-0.68%104.99%-50.99%5.17%
Technical Indicators

Quick-reference for reading the values below. Indicators combine to confirm a view — no single one is a trade signal on its own.

Trend Indicators
  • SMA 20 / 50 / 200 — price above = uptrend, below = downtrend. SMA 50 crossing SMA 200 is the golden/death cross.
  • EMA 12 / 26 — faster-reacting averages; 12 above 26 is short-term bullish.
  • MACD — bullish when MACD > signal (green badge), bearish when below. Divergence from price often precedes reversals.
  • ADX (14) — trend strength regardless of direction. <20 range, 20–25 weak trend, 25–50 trend, >50 strong trend.
  • +DI / −DI — +DI > −DI favors bulls; the reverse favors bears. Read alongside ADX.
Momentum Oscillators
  • RSI (14) — <30 oversold, >70 overbought. 40–60 is neutral; trending names can stay extreme.
  • Stochastic %K / %D — <20 oversold, >80 overbought. %K crossing %D is an early momentum signal.
  • Williams %R — inverted scale: <−80 oversold, >−20 overbought.

Oscillators work best in range-bound markets; in strong trends they give premature reversal signals.

Volume & Volatility
  • Bollinger Bands — price at upper band = overbought, lower = oversold. Narrow bands (squeeze) often precede expansion.
  • OBV — cumulative volume; rising OBV confirms uptrend, falling OBV confirms downtrend. Divergence from price is a warning.
  • Vol SMA 20 / Vol ROC — today's volume vs. 20-day average. Positive ROC with price move = conviction.
  • ATR / True Range — average daily $ move; sizing and stop-loss reference.
  • HV 20 / 30 / 60 — realized (historical) volatility. Compare to IV on the options cards: IV > HV = rich premium.

Confluence matters: trend + momentum + volume agreeing carries far more weight than any single indicator. For how these feed the spread scanner score, see the algorithm docs →

Trend Indicators

SMA 20: $10.46
SMA 50: $10.00
SMA 200: $10.88
Current: $10.86
EMA 12: $10.63
EMA 26: $10.40
MACD: 0.2210 | Signal: -0.0028
BULLISH
ADX (14): 23.60
WEAK TREND
+DI: 35.19
−DI: 15.93

Momentum Oscillators

RSI (14): 56.33
NEUTRAL
Stoch %K: 52.30
Stoch %D: 47.64
Williams %R: -39.08

Volume & Volatility

BB Upper: $11.18
BB Lower: $9.75
NEUTRAL
OBV: 95,497,080
Vol SMA 20: 2,114,779
Vol ROC: -30.53%
ATR: $0.48
True Range: $0.38
HV 20: 52.9%
HV 30: 69.6%
HV 60: 58.3%

Data Summary

Data Points: 500
Last Updated:
Date Range: 2024-10-23T00:00:00 – 2026-10-21T00:00:00
AI Analysis

LLM Stock Analysis Report

Executive Summary

Overall Assessment: NEUTRAL (confidence level: 6/10)

Key Drivers:

  • Technical signals are mixed, with a bullish MACD crossover and neutral RSI reading
  • News headlines are predominantly negative, focusing on investigation and potential fraud claims
  • Risk metrics indicate moderate volatility, with a beta of 0.83 compared to the S&P 500

Primary Risks:

  • Negative news sentiment could continue to pressure the stock price
  • Technical signals may not be reliable due to the recent decline in volatility

Investment Thesis: ATEC's recent decline may present a buying opportunity for investors willing to take on moderate risk. However, further negative news or a breakdown below key support levels could lead to significant losses.

Recent News Sentiment Impact: The overwhelming negative sentiment from recent news headlines has likely contributed to the stock's decline. Investors should be cautious and monitor for any signs of improvement in the company's situation before considering a position.

Technical Analysis

Trend Direction:

  • Short-term (1-4 weeks): NEUTRAL
  • Medium-term (1-3 months): BEARISH
  • Long-term (3-12 months): NEUTRAL

Support/Resistance Levels: The $9.11 lower Bollinger Band and the SMA 50 ($9.27) serve as key support levels, while the upper Bollinger Band ($9.80) represents resistance.

Momentum Signals:

  • RSI interpretation: NEUTRAL (51.96)
  • MACD signal: BULLISH (0.02 / -0.04 / 0.05)
  • Bollinger Bands position: NEUTRAL

Volume Analysis: The volume rate of change is 2.96%, indicating a moderate increase in trading activity.

News & Sentiment Analysis

Recent Headlines Summary: The news headlines focus on investigations and potential fraud claims, which have likely contributed to the stock's decline.

Sentiment Assessment: The aggregate news sentiment is NEGATIVE (6/10).

Catalyst Identification: No specific catalysts are identified at this time, but investors should monitor for any updates regarding the ongoing investigations or potential regulatory changes.

Market Narrative: The negative news headlines contradict the bullish MACD signal, indicating that further declines may be possible if the negative news sentiment continues to drive the stock price.

Risk & Volatility Assessment

Risk Metrics:

  • Beta: 0.83 (vs SPY)
  • Alpha: -0.47
  • Correlation: 0.16
  • Stock Volatility: 0.66

Options Market Signals: The IV rank is 22.3% (Low), indicating historically low volatility. The current IV is 126.1%, and the expected move is $1.25 by expiration.

Downside Protection: The lower Bollinger Band ($9.11) serves as a key support level, while the SMA 50 ($9.27) represents additional support.

Market Context & Positioning

Sector Performance: ATEC's sector (Healthcare Technology) has been weak recently, contributing to the stock's decline.

Institutional Activity: The volume flow is moderate, with a slight bias towards calls. However, the put/call ratio suggests bearish sentiment.

Correlation Analysis: The stock's correlation with the S&P 500 is low at 0.16, indicating that ATEC may not be closely tied to market movements.

Relative Valuation: ATEC's current price is below its historical mean, suggesting a potential buying opportunity for investors willing to take on moderate risk.

Key Levels & Action Items

Critical Price Levels:

  • $9.11 (lower Bollinger Band)
  • $9.27 (SMA 50)
  • $9.80 (upper Bollinger Band)

Breakout/Breakdown Levels: No specific levels are identified at this time, but investors should monitor for any signs of improvement or deterioration in the company's situation.

Time-Sensitive Catalysts: No specific catalysts are identified at this time, but investors should monitor for any updates regarding the ongoing investigations or potential regulatory changes.

Risk Management: A stop-loss level below $9.00 could be considered to limit potential losses. Position sizing considerations include a maximum allocation of 3% of the overall portfolio to ATEC.

Generated
Earnings History
22 of 27 under expected move
Avg Expected Move
13.78%
Avg Actual Move
9.56%
Each row pairs the pre-earnings straddle-implied expected move with the realized close-to-close move. Sorted oldest first.
Earnings Date Timing Expected Move Actual Move Ratio Outcome
2021-01-12 After-Close 9.47% 1.93% 0.20x Within
2021-03-05 After-Close 11.48% 4.46% 0.39x Within
2021-05-06 After-Close 11.52% 1.11% 0.10x Within
2021-07-12 After-Close 6.78% 4.50% 0.66x Within
2021-11-04 After-Close 11.43% 1.97% 0.17x Within
2022-01-10 After-Close 8.24% 0.78% 0.09x Within
2022-03-01 After-Close 5.42% 2.62% 0.48x Within
2022-05-05 After-Close 13.90% 12.79% 0.92x Within
2022-08-04 After-Close 4.87% 0.37% 0.08x Within
2022-11-03 After-Close 19.13% 0.98% 0.05x Within
2023-01-09 After-Close 8.79% 0.08% 0.01x Within
2023-02-28 After-Close 10.33% 1.89% 0.18x Within
2023-04-19 After-Close 6.53% 0.06% 0.01x Within
2023-08-03 After-Close 9.54% 5.63% 0.59x Within
2023-10-16 After-Close 9.11% 2.52% 0.28x Within
2024-01-08 After-Close 5.74% 1.47% 0.26x Within
2024-02-27 After-Close 12.71% 8.87% 0.70x Within
2024-05-07 After-Close 11.56% 21.94% 1.90x Exceeded
2024-07-31 After-Close 20.79% 34.26% 1.65x Exceeded
2024-10-30 After-Close 31.58% 39.68% 1.26x Exceeded
2025-02-26 After-Close 23.73% 9.58% 0.40x Within
2025-05-01 After-Close 19.44% 8.50% 0.44x Within
2025-07-31 After-Close 20.09% 30.15% 1.50x Exceeded
2025-10-30 After-Close 24.34% 16.29% 0.67x Within
2026-01-12 After-Close 8.95% 6.48% 0.72x Within
2026-05-05 After-Close 25.42% 31.67% 1.25x Exceeded
2026-08-04 After-Close 21.26% 7.54% 0.35x Within

Earnings calendar: this week’s reports with expected vs actual moves →

ATEC Options Activity & IV Rank

ATEC IV rank history, 52-week IV rank and IV percentile →

Volatility Metrics

Current IV: 95.1%
7-DTE IV: —
Expected Move: $2.12
7-DTE Move: $2.12
Days to Exp: 30 (2026-11-20)

Options Flow

Call Volume: 75
Put Volume: 81
P/C Volume: 1.08
NEUTRAL
Call OI: 2,109
Put OI: 485
P/C OI: 0.23
Total OI: 2,594

ATM Options Pricing

ATM Call: $1.68
ATM Put: $0.45
Call %: 15.4%
Put %: 4.1%

Chain Summary

Chain Volume: 1,042
Chain OI: 13,340
Last Updated: 10/21/2026
Spread Scanner GPU

Each spread is ranked by a composite score built in three stages. Full documentation →

Stage 1 — Base Score (GPU scanner)

score = P(profit) × (credit / spread_width)
P(profit) from short leg delta (1 − |delta|), penalised above 85%. Credit uses mid-price to handle illiquid chains fairly.

Stage 2 — Skew Adjustment (±25% cap)

RR and BF (30-delta) from the persisted per-symbol skew snapshot — wing strikes picked by real greeks.delta, not a moneyness proxy. Put skew boosts bull puts, penalises bear calls. High butterfly boosts iron condors. Calendars are skew-neutral.

Stage 3 — Technical Overlay (±50% cap, 5 groups)
Group 1 · Directional Bias (±0.25)
  • RSI <40 bullish / >60 bearish
  • MACD crossover + histogram trend
  • Price vs SMA 50 & SMA 200
Group 2 · Momentum (±0.10)
  • Stochastic %K <20 / >80
  • Williams %R <−80 / >−20
Group 3 · Volatility (up to −0.25 / +0.15)
  • Blended ATR + straddle expected-move penalty
  • Bollinger Band signal (+ counter-trend penalty)
  • BB width — vol contraction boost for ICs
Group 4 · IV Regime (±0.15)
  • IV rank ≥ 75 → strong boost for credit spreads
  • IV rank < 25 → penalty (selling cheap vol)
Group 5 · Liquidity (penalty up to −0.10)
  • Min open interest across all legs
  • OI < 100 → −0.10 · OI < 500 → −0.05

score = base_score × skew_multiplier × tech_multiplier
Both multipliers are shown per spread. Beta is informational only — ATR already captures realized vol. Full algorithm documentation →

Enter a ticker to scan for optimal spread opportunities.

Evaluates all bull put, bear call, iron condor, and calendar spread combinations using GPU-accelerated analysis.

Dealer Positioning
TYPICAL γ

Estimated net dealer gamma is at the 60th percentile of this name's own daily history, within its typical range. This describes current positioning; it is not a forecast or a trading signal.

Gamma percentile
60%
vs own history
GEX tilt
+0.55
OI-weighted, today
Vanna tilt
-0.38
δ-sensitivity to IV
Charm tilt
+0.42
δ-decay vs time
Vanna tilt -0.38: the estimated dealer exposure leans negative, so the modeled hedge would shift noticeably if implied volatility changed.
Charm tilt +0.42: the estimated dealer exposure leans positive, so the modeled hedge would shift noticeably as time passes and options approach expiry.

Net dealer gamma is an estimate of the aggregate gamma held by options market makers across this name's option chain, weighted by open interest. Dealer positions aren't public, so it uses a standard simplifying assumption: dealers are treated as long the calls and short the puts that are open. Actual dealer books can differ.

Gamma percentile ranks today's estimate against this name's own daily history, from 0% (the lowest reading on record) to 100% (the highest). Raw gamma scales with how much open interest a chain carries, so it isn't comparable across names; the percentile is. The badge marks the bottom 20% as low and the top 20% as high.

Tilts run from −1 to +1 and show how lopsided the estimated dealer exposure is. GEX tilt compares call gamma with put gamma. Vanna tilt describes how the hedge would shift if implied volatility changed, and charm tilt how it would shift with the passage of time.

This card describes estimated positioning and where it sits historically. It is not a forecast of price direction or volatility and not a trading signal. Market-wide view: Dealer positioning screener.

· 6 ATM contracts, 1k total OI
Skew (Wing IV − ATM IV)
DTE:
Wing Δ:
Metric:
Wing vs ATM
IV(put wing) − IV(ATM), in vol points

How much the OTM put trades above (or below) the at-the-money strike. Measures the height of the put-side tail relative to ATM — i.e. how expensive crash insurance is on this name.

  • Positive (typical) — wing IV > ATM IV. Standard equity put skew: portfolios bid up crash protection, so OTM puts trade richer than ATM.
  • Near zero or negative (unusual) — wing IV ≤ ATM IV. Flat or inverted put side. Common when there's no fear demand, in tightly mean-reverting names, or right after an earnings catalyst clears.
  • Percentile vs own 3-yr history: high = wings rich (good time to sell wing premium); low = wings cheap (good time to buy protection).
  • Not directional — high or low wings don't predict up or down moves. It's a price tag on tail insurance, not a forecast.
Risk Reversal
IV(call wing) − IV(put wing), equal delta on each side

Which side of the smile is the market paying up for? Measures the tilt of the surface — call skew vs put skew at matched deltas.

  • Negative (typical) — puts richer than calls. Standard equity behavior: hedging demand makes puts carry a premium. Most large-caps sit in the −1 to −5 vol-point range.
  • Strongly negative (< −5 pts) — heavy downside hedging, elevated fear, or an upcoming catalyst (earnings, FDA, macro event). Worth flagging.
  • Positive — calls richer than puts. Unusual for equities; signals bullish momentum, short-squeeze positioning, or takeover/M&A speculation.
  • Near zero — symmetric surface. Market sees roughly equal up/down risk. Rare for large-caps; more common in commodities and FX.
Reading them together

Wing-vs-ATM tells you how expensive the tails are. Risk Reversal tells you which side is favored. Combined:

  • High wing percentile + deeply negative RR → strong put bid; stress or major event priced in. Owning protection costs a premium; selling put premium is dangerous.
  • Low wing percentile + near-zero RR → complacency; insurance cheap and balanced. Good environment to add cheap downside hedges.
  • Positive RR + elevated wings → call-side fear-of-missing-out; common in squeeze setups. Upside calls expensive, downside puts not bid.
14 DTE / 10d —
— pts EXTREME
as of Oct 21 · No data
30 DTE / 10d —
— pts EXTREME
as of Oct 21 · ATM 98.5% / Wing —

Percentile is the rank of today's reading within ~3 years of this symbol's own history. High percentile = wings are rich relative to history; not a directional signal. Skew is read off the chain in real time, not from CBOE SKEW.

Volatility Surface

Enter a ticker to render the implied volatility surface.

Volatility Smile

Enter a ticker to render the implied volatility smile.

IV Rank (7 DTE)
IV Rank (30 DTE)64.2MediumOct 21
Straddle Price (30 DTE)$2.12Oct 21
Beta Analysis

Risk Metrics

Beta: 0.9456
Alpha: -24.59%
Correlation: 0.1737
R-Squared: 3.0%
Stock Volatility: 69.1%
Market Volatility: 12.7%

Analysis Details

Benchmark: SPY
Data Points: 251
Period: 252 trading days
Interpretation:
Moderate volatility - stock generally follows market
Beta & Alpha Over Time

ATEC Institutional Ownership (13F)

Latest filings — 2026-09-30
Diluted shares outstanding: 153,022,750 (as of 2026-06-30)

Institutional managers with $100M+ AUM file Form 13F-HR quarterly, due 45 days after quarter end. Holdings are reported gross at quarter-end market value — they are a snapshot, not a real-time position.

  • Shares — long equity positions in this name, aggregated across share classes.
  • Calls / Puts — notional value of long call / put exposure where this ticker is the underlying.
  • % of Float — holder's reported shares divided by the latest diluted shares outstanding. Sums above 100% indicate large custodian / prime broker positions where the same shares are reported by multiple filers.
  • Custodian badge — filers with more than 5,000 holdings are typically broker-dealers / custodians reporting customer-held shares, not active managers.

Each filer is counted once at its latest 13F-HR filing. New filings are ingested on a weekly cadence.

310 filers571,633,137 shares$1.59B value373.56% of float
# Filer Shares Value % of Total % of Float Period
1 Vanguard Group Inc Custodian 6,883,626 $144.83M 9.12% 4.50% 2025-12-31
2 BRAIDWELL LP 75,652,439 $122.68M 7.72% 49.44% 2026-06-30
3 BlackRock, Inc. Custodian 19,256,677 $105.53M 6.64% 12.58% 2026-06-30
4 Linden Advisors LP 68,214,000 $65.43M 4.12% 44.58% 2026-06-30
5 American Century Companies, Inc. 6,521,659 $56.41M 3.55% 4.26% 2026-06-30
6 CAPSTONE INVESTMENT ADVISORS, LLC 54,547,000 $53.53M 3.37% 35.65% 2026-06-30
7 Vanguard Capital Management LLC 5,122,681 $44.31M 2.79% 3.35% 2026-06-30
8 State Street Corp 14,888,349 $40.98M 2.58% 9.73% 2026-06-30
9 ADVENT CAPITAL MANAGEMENT /DE/ 35,108,000 $33.69M 2.12% 22.94% 2026-06-30
10 BNP PARIBAS ASSET MANAGEMENT Holding S.A. 3,536,538 $30.59M 1.93% 2.31% 2026-06-30
11 JACOBS LEVY EQUITY MANAGEMENT, INC 3,352,133 $29.00M 1.82% 2.19% 2026-06-30
12 Context Capital Management, LLC 30,000,000 $28.73M 1.81% 19.60% 2026-06-30
13 Geode Capital Management, LLC Custodian 3,188,894 $27.59M 1.74% 2.08% 2026-06-30
14 Iron Triangle Partners LP 1,285,685 $27.05M 1.70% 0.84% 2025-12-31
15 Royal Bank of Canada Custodian 2,995,410 $25.91M 1.63% 1.96% 2026-06-30
16 Nuveen, LLC Custodian 2,601,600 $22.50M 1.42% 1.70% 2026-06-30
17 TREMBLANT CAPITAL GROUP 2,577,799 $22.30M 1.40% 1.68% 2026-06-30
18 Citadel Advisors LLC Custodian 2,461,400 $21.29M 1.34% 1.61% 2026-06-30
19 SILVERBACK ASSET MANAGEMENT LLC 22,028,000 $21.02M 1.32% 14.40% 2026-06-30
20 AQR Capital Management, LLC Custodian 2,386,326 $20.64M 1.30% 1.56% 2026-06-30
21 UBS Group AG Custodian 5,180,823 $20.60M 1.30% 3.39% 2026-06-30
22 AQR Arbitrage LLC 21,328,000 $20.42M 1.29% 13.94% 2026-06-30
23 Bank of America Corp Custodian 4,517,534 $19.52M 1.23% 2.95% 2026-06-30
24 EMERALD ADVISERS, LLC 2,104,451 $18.20M 1.15% 1.38% 2026-06-30
25 NOMURA ASSET MANAGEMENT INTERNATIONAL INC. 1,974,452 $17.08M 1.07% 1.29% 2026-06-30
7 filers$49.59M notional
# Filer Notional Value % of Total Period
1 UBS Group AG Custodian $45.08M 90.90% 2026-06-30
2 Susquehanna International Group, LLP Custodian $2.11M 4.25% 2026-06-30
3 Citadel Advisors LLC Custodian $1.10M 2.22% 2026-06-30
4 CenterStar Asset Management, LLC $585.14K 1.18% 2026-09-30
5 Walleye Trading LLC $396.17K 0.80% 2026-06-30
6 HAP TRADING, LLC $164.12K 0.33% 2025-09-30
7 Jane Street Group, LLC Custodian $157.43K 0.32% 2026-06-30
5 filers$6.55M notional
# Filer Notional Value % of Total Period
1 Royal Bank of Canada Custodian $4.05M 61.80% 2026-06-30
2 Citadel Advisors LLC Custodian $903.92K 13.80% 2026-06-30
3 Jane Street Group, LLC Custodian $679.89K 10.38% 2026-06-30
4 Susquehanna International Group, LLP Custodian $475.75K 7.26% 2026-06-30
5 CenterStar Asset Management, LLC $442.73K 6.76% 2026-09-30

ATEC Insider Trading (Form 4)

Latest: 2026-10-05
Form 4 filings — insider beneficial-ownership changes by officers, directors, and 10%+ holders. Filed within 2 business days of transaction.
Filed Reporter Role Action Shares Avg Price Net $ Link
2026-10-05 Thomas Andrew Carls EVP, Data & Imaging Solutions Award (A) +200,000 — EDGAR
2026-09-10 Patrick Miles CEO Buy (P) +115,000 $8.81 $1.01M EDGAR
2026-08-07 Tyson Eliot Marshall GENERAL COUNSEL & CORP. SEC. Sell (S) −8,168 $9.65 -$78.8K EDGAR
2026-08-07 Tyson Eliot Marshall GENERAL COUNSEL & CORP. SEC. Sell (S) −8,168 $9.65 -$78.8K EDGAR
2026-06-12 Karen K McGinnis Director Mixed +25,962 $8.01 -$48.5K EDGAR
2026-06-12 David M Demski Director Award (A) +32,012 — EDGAR
2026-06-12 David R Pelizzon Director Award (A) +32,012 — EDGAR
2026-06-12 Keith Valentine Director Award (A) +32,012 — EDGAR
2026-06-12 Quentin S. Blackford Director Award (A) +32,012 — EDGAR
2026-06-12 Mortimer Berkowitz III Director Award (A) +32,012 — EDGAR
2026-05-11 Keith Valentine Director Buy (P) +135,000 $7.38 $996.2K EDGAR
2026-04-09 Tyson Eliot Marshall GENERAL COUNSEL & CORP. SEC. Mixed +79,107 $4.10 $25 EDGAR
2026-03-17 Scott Lish CHIEF OPERATING OFFICER Sell (S) −260,535 $12.30 -$3.20M EDGAR
2026-03-17 John Todd Koning CHIEF FINANCIAL OFFICER Sell (S) −79,789 $12.36 -$986.2K EDGAR
2026-03-13 David Sponsel EVP, SALES Sell (S) −163,452 $12.52 -$2.05M EDGAR
Codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (described in filing footnote — typically 401(k), trust, inheritance) · W = will/inheritance. Only P / S codes carry directional signal.

ATEC Insider Holdings

18 insiders · @ $10.86
Officers, directors, and 10%+ owners who have filed a Form 4 in the past two years, ranked by current disclosed exposure (shares × today's price). Shares are direct + indirect (via trusts / LLCs / spouse). Excludes unvested RSU and option grants — those aren't beneficially owned until vest.
# Insider Role Shares Disclosed Exposure Lifetime OM Net Filings Last Filed
1 David R Pelizzon Director 10,773,884 $117.00M $71.66M 19 2026-06-12
2 Squadron Capital Holdings LLC 10%+ Owner 10,673,879 $115.92M -$15.65M 3 2025-12-10
3 Squadron Capital LLC 10%+ Owner 10,673,879 $115.92M -$15.65M 3 2025-12-10
4 Patrick Miles CEO 5,904,451 $64.12M -$990.39M 53 2026-09-10
5 Ward W Woods Jr Director 2,210,602 $24.01M $0 12 2025-06-13
6 Craig E Hunsaker EVP, PEOPLE & CULTURE 1,725,609 $18.74M -$22.77M 55 2026-03-10
7 Scott Lish CHIEF OPERATING OFFICER 815,704 $8.86M -$10.03M 34 2026-03-17
8 Mortimer Berkowitz III Director 796,637 $8.65M -$25.36M 23 2026-06-12
9 Tyson Eliot Marshall GENERAL COUNSEL & CORP. SEC. 630,398 $6.85M -$4.39M 17 2026-08-07
10 John Todd Koning CHIEF FINANCIAL OFFICER 600,721 $6.52M -$5.82M 22 2026-03-17
Lifetime OM Net = signed sum of open-market buys (P) and sells (S) over their career; excludes grants, tax withholdings, and dispositions to issuer. A large negative number is normal for long-tenured executives — they've sold compensation grants over many years.

ATEC Board & Officers

As of SEC filings through Oct 5, 2026

Directors 8

Officers 7

10% owners 3

Changes in the last 10 years (56)
Sep 14, 2026Thomas Andrew Carls became EVP, Data & Imaging Solutions
Dec 18, 2025David R Pelizzon no longer listed as a 10% owner in SEC filings
Nov 5, 2025Jeffrey P Rydin reported in an SEC filing no longer being a director
Jul 29, 2024Keith Valentine became a director
Feb 5, 2024Scott Lish listed as Chief Operating Officer (previously SVP, Development) in SEC filings
Feb 5, 2024Craig E Hunsaker listed as EVP, People & Culture (previously EVP, People/Culture & GC) in SEC filings
Oct 17, 2023David M Demski became a director
Jul 19, 2023Tyson Eliot Marshall became General Counsel & Corp. Sec.
Jun 14, 2023Paul Segal no longer listed as a 10% owner in SEC filings
Jun 14, 2023Paul Segal first listed as a director in an SEC filing
Jan 26, 2023Paul Segal first listed as a 10% owner in an SEC filing
Jan 26, 2023L-5 Healthcare Partners, LLC first listed as a 10% owner in an SEC filing
Nov 10, 2022Paul Segal no longer listed as a 10% owner in SEC filings
Jun 15, 2022Andy Barnett became a director
Mar 22, 2022Brian Snider listed as EVP, Marketing (previously EVP, Strat. Mktg. & Prod. Dev.) in SEC filings
Nov 26, 2021Paul Segal first listed as a 10% owner in an SEC filing
Aug 12, 2021Elizabeth Ann Altman became a director
Jun 17, 2021Marie Meynadier became a director
Apr 19, 2021John Todd Koning became Chief Financial Officer
Mar 3, 2021David R Pelizzon first listed as a 10% owner in an SEC filing
Not reported recently (22)
  • Evan Bakst · Last reported as a director in an SEC filing dated Aug 26, 2024
  • Paul Segal · Last reported as a director in an SEC filing dated Mar 6, 2024
  • James L L Tullis · Last reported as a director in an SEC filing dated Feb 13, 2024
  • David H Mowry · Last reported as a director in an SEC filing dated Sep 13, 2023
  • Marie Meynadier · Last reported as a director in an SEC filing dated Jun 21, 2023
  • Elizabeth Ann Altman · Last reported as a director in an SEC filing dated Jun 21, 2023
  • L-5 Healthcare Partners, LLC · Last reported as a 10% owner in an SEC filing dated May 12, 2023
  • Brian Snider · Last reported as EVP, Marketing in an SEC filing dated Aug 9, 2022
  • Kelli Mari Howell · Last reported as EVP, Clinical Strategies in an SEC filing dated Aug 9, 2022
  • Andy Barnett · Last reported as a director in an SEC filing dated Jun 17, 2022
  • Jason Hochberg · Last reported as a director in an SEC filing dated Dec 16, 2021
  • Donald Allen Williams · Last reported as a director in an SEC filing dated Jun 21, 2021
  • Jeffrey G. Black · Last reported as EVP & CFO in an SEC filing dated Mar 10, 2021
  • Terry Rich · Last reported as a director in an SEC filing dated Aug 1, 2018
  • Jonathan Allen · Last reported as EVP, Commerical Operations in an SEC filing dated Mar 12, 2018
  • Michael Joseph Plunkett · Last reported as President and COO in an SEC filing dated Aug 24, 2017
  • R Ian Molson · Last reported as a director in an SEC filing dated Jun 26, 2017
  • Stephen Oneil · Last reported as a director in an SEC filing dated Jun 26, 2017
  • Ebun Garner · Last reported as General Counsel and SVP in an SEC filing dated Dec 16, 2016
  • Siri S Marshall · Last reported as a director in an SEC filing dated Dec 16, 2016
  • Dennis Nelson · Last reported as VP, Finance and Controller in an SEC filing dated Dec 16, 2016
  • John Foster · Last reported as a 10% owner in an SEC filing dated Dec 1, 2016
Compiled from SEC filings by the company and its directors and officers. Dates are as stated in those filings. Where no filing says when someone left, we show the last filing that listed them.

ATEC Proposed Insider Sales (Form 144)

Latest: 2026-08-05
Last 30d: 0 filings  ·  Last 90d: 1 filing · $85K notice value · 1 unique filer · 100% under 10b5-1 plans

What is Form 144? A notice of intent to sell restricted or control stock under Rule 144. Affiliates (officers, directors, 10%+ owners) and holders of restricted shares must file Form 144 when planning to sell more than 5,000 shares or $50,000 in any 3-month rolling window.

How it relates to Form 4: Form 144 is filed before the trade (up to 90 days in advance); Form 4 is filed within 2 business days after the trade executes. Not every Form 144 results in a sale — the filer may cancel or delay. Look for the corresponding Form 4 on the Insider Activity card to confirm a sale actually happened.

10b5-1 plans: Trades made under a pre-scheduled Rule 10b5-1 plan are not discretionary — they execute automatically on dates set months earlier, regardless of news. High 10b5-1 percentages mean less per-filing signal value, though cumulative selling volume still matters.

"Notice value": Aggregate market value the filer wrote into the Form 144 — i.e. the size of the planned sale, not necessarily the executed dollars. An amended notice (Form 144/A) replaces the original it amends, and cancelled notices are dropped, so neither is double-counted above. A filed value that is clearly inconsistent with the share count at the stock's price (a filer typo) shows as a dash and is left out of the totals.

Source & freshness: Sourced from public Form 144 filings. Refreshed daily; new filings typically appear here the morning after they are filed.

Top 90-day filers: TYSON MARSHALL (1, $85K)
Filed Filer Role Shares Notice Value Planned Sale Broker Plan Link
2026-08-05 TYSON MARSHALL Officer 8,168 $84.5K 2026-08-05 Morgan Stanley Smith Barney LLC … 10b5-1 EDGAR
2026-06-11 MCGINNIS KAREN K Director 6,050 $48.5K 2026-06-11 THE CHARLES SCHWAB CORPORATION 10b5-1 EDGAR
2026-03-13 JOHN TODD KONING Officer 79,789 $997.4K 2026-03-13 Morgan Stanley Smith Barney LLC … 10b5-1 EDGAR
2026-03-13 SCOTT LISH Officer 260,535 $3.21M 2026-03-13 Morgan Stanley Smith Barney LLC … — EDGAR
2026-03-11 DAVID SPONSEL Officer 163,452 $2.04M 2026-03-11 Morgan Stanley Smith Barney LLC … 10b5-1 EDGAR
2026-03-06 Craig Hunsaker officer 95,000 $1.16M 2026-03-06 Merrill Lynch 10b5-1 EDGAR
2026-03-05 TYSON MARSHALL Officer 88,835 $1.15M 2026-03-05 Morgan Stanley Smith Barney LLC … 10b5-1 EDGAR
2026-02-05 DAVID SPONSEL Officer 60,425 $849.6K 2026-02-05 Morgan Stanley Smith Barney LLC … 10b5-1 EDGAR
2026-02-03 Craig Hunsaker officer 37,358 $548.2K 2026-02-03 Merrill Lynch 10b5-1 EDGAR
2026-01-05 PATRICK MILES Director, Officer 300,000 $6.23M 2026-01-05 Morgan Stanley Smith Barney LLC … 10b5-1 EDGAR
Notice value is the aggregate market value the filer states they intend to sell — not a confirmed transaction. Compare to Insider Activity (Form 4) to see which planned sales actually executed. Market-wide feed: Planned sales (Form 144).
ETF Holders
58 ETFs hold ATEC
25 shown · $158.64M total exposure · 0.04% AUM-weighted avg weight
# ETF Provider Weight $ Exposure ETF AUM As Of
1 VTI Vanguard Morningstar Total Stock Market ETF Vanguard 0.00% $37.7M — 2026-09-30
2 IWM iShares Russell 2000 ETF iShares (BlackRock) 0.05% $34.0M $75.1B 2026-10-20
3 VXF Vanguard Extended Market ETF Vanguard 0.02% $15.0M — 2026-09-30
4 IWO iShares Russell 2000 Growth ETF iShares (BlackRock) 0.09% $12.4M $13.6B 2026-10-20
5 FESM Fidelity Enhanced Small Cap Core ETF Fidelity 0.12% $8.0M $6.6B 2026-10-20
6 VTWO Vanguard Russell 2000 ETF Vanguard 0.04% $7.4M — 2026-09-30
7 IHI iShares U.S. Medical Devices ETF iShares (BlackRock) 0.18% $6.5M $3.5B 2026-10-20
8 FYC First Trust Small Cap Growth AlphaDEX® Fund First Trust 0.40% $5.3M $1.3B 2026-10-20
9 SCHA Schwab U.S. Small-Cap ETF Nport 0.02% $4.2M — 2026-05-31
10 VHT Vanguard Health Care ETF Vanguard 0.02% $3.9M — 2026-09-30
11 KOMP State Street® SPDR® S&P Kensho New Economies Composite ETF SPDR (State Street) 0.13% $3.2M $2.5B 2026-10-20
12 XHE State Street® SPDR® S&P® Health Care Equipment ETF SPDR (State Street) 1.89% $2.8M $149.3M 2026-10-20
13 PSC Principal U.S. Small-Cap ETF Nport 0.11% $2.6M — 2026-06-30
14 TMFG Motley Fool Global Opportunities ETF Nport 0.73% $2.6M — 2026-05-31
15 ITOT iShares Core S&P Total U.S. Stock Market ETF iShares (BlackRock) 0.00% $2.0M $97.4B 2026-10-20
16 GSSC Goldman Sachs ActiveBeta U.S. Small Cap Equity ETF Goldman 0.18% $1.9M $1.0B 2026-10-20
17 FYX First Trust Small Cap Core AlphaDEX® Fund First Trust 0.13% $1.8M $1.4B 2026-10-20
18 TMFS Motley Fool Small-Cap Growth ETF Nport 2.73% $1.6M — 2026-05-31
19 VTWG Vanguard Russell 2000 Growth ETF Vanguard 0.08% $1.4M — 2026-09-30
20 TMFM Motley Fool Mid-Cap Growth ETF Nport 0.96% $1.1M — 2026-05-31
21 FHLC Fidelity MSCI Health Care Index ETF Fidelity 0.02% $687,786 $3.8B 2026-10-20
22 RSSL Global X Russell 2000 ETF Global X 0.04% $647,712 — 2026-10-21
23 NUSC Nuveen ESG Small-Cap ETF Nport 0.05% $613,012 — 2026-07-31
24 LFSC F/m Emerald Life Sciences Innovation ETF Nport 0.57% $599,742 — 2026-05-31
25 ONEQ Fidelity Nasdaq Composite Index ETF Fidelity 0.00% $516,599 $10.9B 2026-10-20
Fundamentals

Quarterly filings sourced from SEC 10-Q / 10-K reports. TTM tiles aggregate the most recent four quarters; bars show the last ~12 quarters oldest → newest.

Metrics
  • Revenue — top-line sales. Look for consistent YoY growth; seasonal businesses need same-quarter comparisons (Q4 '24 vs Q4 '23).
  • Net Income — bottom-line profit after all expenses. Can be volatile from one-time items; red bars = net loss.
  • Diluted EPS — net income per share assuming options/converts are exercised. Direct input to the P/E ratio.
  • Operating Cash Flow — cash generated from core operations, before capex and financing. Harder to manipulate than net income; growing OCF is a quality signal.
How to read the bars
  • Sequential growth — quarter-over-quarter trend. Accelerating bars are a momentum signal.
  • YoY growth — compare to the same quarter a year earlier to remove seasonality.
  • Quality — OCF should roughly track Net Income over time. Large divergence (net income ≫ OCF) flags accruals risk.
  • Margins — scan the bar ratios: Net Income / Revenue tells you margin trend without needing a separate chart.

TTM (trailing-twelve-month) smooths seasonality and is used for the P/E calculation. Filings appear 30–90 days after the period closes.

Trailing P/E
—
TTM Diluted EPS
$-0.72
TTM Revenue
$815.05M
TTM Net Income
$-109.99M
TTM Op. Cash Flow
$56.52M
Quarterly figures (12 quarters)
QuarterPeriod EndRevenueNet IncomeDiluted EPSOp. Cash Flow
Q2 '262026-06-30$213.51M$-25.78M$-0.16$19.26M
Q1 '262026-03-31$192.11M$-33.91M$-0.22$2.54M
Q4 '252025-12-31$212.93M$-21.73M$-0.15$20.68M
Q3 '252025-09-30$196.50M$-28.58M$-0.19$14.04M
Q2 '252025-06-30$185.54M$-41.14M$-0.27$14.20M
Q1 '252025-03-31$169.18M$-51.91M$-0.35$-3.69M
Q4 '242024-12-31$176.79M$-33.33M$-0.23$10.52M
Q3 '242024-09-30$150.72M$-39.62M$-0.28$-5.34M
Q2 '242024-06-30$145.57M$-40.68M$-0.29$-12.44M
Q1 '242024-03-31$138.48M$-48.49M$-0.34$-37.39M
Q4 '232023-12-31$137.97M$-49.08M$-0.36$-25.00M
Q3 '232023-09-30$118.26M$-42.65M$-0.35$-18.86M
Q2 2026 • period ending 2026-06-30 • filed 2026-08-04
Valuation

Ratios derived from TTM financials and the current market price, sampled daily. History chart shows how expensive the stock is today relative to its own recent past.

Price Multiples
  • P/E — price / TTM earnings. Rough market rule: 10–15 value, 15–25 market, >30 growth/premium. Negative when earnings are negative.
  • P/B — price / book value. Useful for financials and asset-heavy names; meaningless for asset-light software.
  • P/S — price / TTM revenue. Useful when earnings are negative or noisy (early-stage growth).
  • EV/EBITDA — capital-structure-neutral. <10 cheap, 10–15 reasonable, >20 rich. Good for comparing across leverage profiles.
  • EV/Sales — like P/S but accounts for debt + cash. Compare within sector.
Profitability & Yields
  • ROE — return on equity. >15% strong, >25% exceptional. Caution: high leverage inflates ROE.
  • ROA — return on assets. Leverage-neutral; >5% solid, >10% exceptional.
  • Div Yield — annual dividend / price. Compare to 10Y Treasury; sustained yield >6% often signals distress.
  • FCF Yield — free cash flow / market cap. >5% is attractive; negative means burning cash.
Balance Sheet
  • Debt/Equity — leverage. <1 conservative, >2 aggressive. Sector-dependent (utilities naturally high, tech low).
  • Current Ratio — short-term liquidity. >1.5 comfortable, <1 raises short-term solvency flags.
Reading the history chart
  • Compare current level to the 3-year band: near the high end = relatively expensive; near the low = relatively cheap.
  • Multiples expanding while earnings are flat = sentiment-driven rally.
  • Multiples compressing while earnings grow = value coming from fundamentals.
P/E
—
P/B
—
P/S
2.04
EV/EBITDA
53.54
EV/Sales
2.52
ROE
—
ROA
-13.9%
Div Yield
0.00%
FCF Yield
3.40%
Debt/Equity
—
Current Ratio
—
Market Cap
$1.66B
as of 2026-10-21
Short Interest & Float

Regulatory short-interest reports publish on a bi-weekly settlement cadence; short-volume is reported daily by the trade-reporting facilities. Float is derived from insider-ownership filings.

Metric definitions
  • Short Interest — total shares currently sold short as of the settlement date. Lags real time by ~8 business days.
  • SI % of Float — short interest / free float. The key crowding metric.
  • Days to Cover — short interest / avg daily volume. How many full trading days it would take shorts to buy back. High DTC + catalyst = squeeze fuel.
  • Short Vol Ratio — today's short-sale volume / total volume. Intraday selling pressure proxy (not the same as short interest).
  • Free Float — shares available for public trading (total shares minus insider / restricted).
  • Float % — free float / shares outstanding. <50% = tightly held, more prone to squeezes.
How to read the signals
  • SI % of Float < 5% — typical, no particular signal.
  • 5–15% — elevated; watch for catalysts (earnings, guidance, macro).
  • 15–30% — heavily shorted; tight-float names in this range have produced notable squeezes historically.
  • >30% — extreme; borrow is likely expensive and squeeze risk is material.
  • Days to Cover > 5 combined with high SI% amplifies squeeze potential.
History chart
  • Trend matters more than level. Rapidly rising short interest often precedes negative catalysts or heavy hedging.
  • A sudden drop in SI after a rally may indicate a squeeze in progress.

Short interest is reported mid-month and end-of-month; short volume is daily.

Short Interest
14.07M
SI % of Float
11.32%
Days to Cover
6.97
Short Vol Ratio
39.8%
Free Float
124.33M
Float %
80.5%
Short interest 2026-09-30 • Short volume 2026-10-21 • Float 2026-08-14