Zacks Investment ResearchT3·1mo ago
MDY State Street SPDR S&P MIDCAP 400 ETF Trust
ETF 664.00 DelayedETF quote, holdings, sector allocation, technicals, and options analytics. Expected move IV rank history Fibonacci levels
Market data may be delayed, incomplete, or inaccurate. Not a recommendation to buy, sell, or hold any security. Verify quotes with your broker before trading. See Terms §17.
MDY
$664.00
—
Key stats
$664.00
- 52-Week Range
- $568.21 – $717.35
- YTD
- +8.62%
- IV Rank (30D)
- 57.13
- Straddle Price
- $26.00
- P/C Vol Ratio
- 3.68
- Open
- $662.53
- Day Range
- $658.10 – $664.56
- Volume
- 587,189
- Prev Close
- $669.42
About
State Street SPDR S&P MIDCAP 400 ETF Trust (MDY) ETF
No description available.
- Exchange
- ARCX
- Inception
- 1995-05-04
- Has Options
- Yes
- Homepage
- https://www.ssga.com/us/en/individual/etfs
Fund profile
holdings as of Oct 20, 2026issuer data
- Expense ratio
- 0.23% issuer, Oct 22, 2026
- Assets
- $25.8B issuer-reported, Oct 20, 2026
- Trailing yield
- 1.05% paid quarterly
- Average daily volume
- $475M 30 sessions
- Holdings
- 401 top 10 are 7.0%
- Listed
- May 4, 1995 NYSE Arca
- Net asset value
- $666.66 issuer, Oct 20, 2026 · closed +0.03% to NAV
- Median bid/ask spread
- 0.02% 30 days, issuer-reported
Cost67
Liquidity100
Scale100
Diversification100
Moves with. US large-cap stocks (73% of its variance, beta 1.07); Small caps over large (24% of its variance, beta 0.55). These factors explain 88% of its daily moves over the last year.
All 401 holdingsSimilar fundsOverlap toolAll Mid Cap Blend ETFs
Fund flows
daily as of Oct 21, 2026issuer data- Oct 21, 2026
- +$67M latest day
- Latest 5 trading days
- −$17M
- Latest 21 trading days
- +$202M +0.8% of assets
- Year to date
- −$804M −$165M over 12 months
Each day
| Day | Net flow |
|---|---|
| Oct 21, 2026 | +$67M |
| Oct 20, 2026 | $0 |
| Oct 19, 2026 | $0 |
| Oct 16, 2026 | +$33M |
| Oct 15, 2026 | −$117M |
| Oct 14, 2026 | $0 |
| Oct 13, 2026 | $0 |
| Oct 12, 2026 | +$217M |
| Oct 9, 2026 | +$100M |
| Oct 8, 2026 | −$33M |
| Oct 7, 2026 | −$33M |
| Oct 6, 2026 | +$17M |
| Oct 5, 2026 | +$50M |
| Oct 2, 2026 | −$17M |
| Oct 1, 2026 | $0 |
| Sep 30, 2026 | −$82M |
| Sep 29, 2026 | $0 |
| Sep 28, 2026 | $0 |
| Sep 25, 2026 | −$50M |
| Sep 24, 2026 | +$50M |
| Sep 23, 2026 | $0 |
Daily figures are the change in shares outstanding times net asset value, both as the issuer publishes them each day.
Similar funds
| Fund | Overlap | Fee | Assets | 1Y | |
|---|---|---|---|---|---|
| SPMDState Street SPDR Portfolio S&P 400 Mid Cap ETF | 99% | 0.03% | $18.4B | +12.4% | compare |
| IJHiShares Core S&P Mid-Cap ETF | 99% | 0.05% | $123.0B | +12.5% | compare |
| PTMCPacer Trendpilot US Mid Cap ETF | 95% | 0.60% | $370M | +11.4% | compare |
| IVOOVanguard S&P Mid-Cap 400 ETF | 95% | 0.07% | $3.8B | +12.6% | compare |
| XJHiShares ESG Select Screened S&P Mid-Cap ETF | 88% | 0.12% | $415M | +12.8% | compare |
Ranked by how much of the two portfolios is the same securities.
Look-through: what the holdings say
weights as of Oct 20, 2026issuer data- Holdings vs fair value
- +12.4% 48% under, 21% over · 100% covered
- Price / earnings
- 22.9 7% loss-making · 99% covered
- Price / book · sales
- 2.6 · 1.5 revenue growth +9.7%
- Above 200-day average
- 52% 43% above 50-day · by weight
- Short interest
- 6.7% of float, weighted · 4.4 days to cover
- Insider buying
- 8% of weight had net insider buying, 90 days; 60% net selling
- 13F holders
- +2.2% change in shares held by institutions, latest quarter
- Reporting earnings
- 34.1% of weight in 7 days; 70.6% in 14
Holdings reporting in the next 14 days · weighted implied move this week 3.50%
Each figure is the fund's holdings weighted by position size, using our data on those stocks, and covers only the share of the stock holdings stated. Positive fair value means the holdings trade below our estimate.
ETF Profile
holdings as of 2026-10-20
Holdings
401
AUM
$25.8B
Provider
SPDR (State Street)
Inception
1995-05-04
Exchange
ARCX
Data As Of
2026-10-20
Expense Ratio
0.23%
Dividend Yield
1.05%
Distribution
Quarterly
Recent distributions
| Ex-Date | Pay Date | Amount | Type |
|---|---|---|---|
| 2026-09-18 | 2026-10-30 | $1.6035 | CD |
| 2026-06-18 | 2026-07-31 | $1.7022 | CD |
| 2026-03-20 | 2026-04-30 | $1.5163 | CD |
| 2025-12-19 | 2026-01-30 | $2.1837 | CD |
| 2025-09-19 | 2025-10-31 | $1.6186 | CD |
| 2025-06-20 | 2025-07-31 | $1.8033 | CD |
Asset Allocation
Top Holdings
top 50 of 401 holdings
| Symbol | Name | Weight % | Asset Class | Country |
|---|---|---|---|---|
| — | U.S. Dollar | 0.96% | Cash/Money Market | — |
| OKTA | Okta Inc. Class A | 0.94% | Equity (US) | US |
| FTI | TechnipFMC plc | 0.78% | Equity (Foreign) | GB |
| ATI | ATI Inc | 0.72% | Equity (US) | US |
| UTHR | United Therapeutics Corporation | 0.69% | Equity (US) | US |
| NVT | nVent Electric plc | 0.66% | Equity (Foreign) | IE |
| USFD | US Foods Holding Corp. | 0.65% | Equity (US) | US |
| THC | Tenet Healthcare Corporation | 0.64% | Equity (US) | US |
| XPO | XPO Inc. | 0.63% | Equity (US) | US |
| ENTG | Entegris Inc. | 0.63% | Equity (US) | US |
| RS | Reliance Inc. | 0.62% | Equity (US) | US |
| ROKU | Roku Inc. Class A | 0.60% | Equity (US) | US |
| PR | Permian Resources Corporation Class A | 0.60% | Equity (US) | US |
| RGLD | Royal Gold Inc. | 0.59% | Equity (US) | US |
| SNX | TD SYNNEX Corporation | 0.58% | Equity (US) | US |
| DINO | HF Sinclair Corporation | 0.56% | Equity (US) | US |
| OVV | Ovintiv Inc | 0.56% | Equity (US) | US |
| WWD | Woodward Inc. | 0.56% | Equity (US) | US |
| ROIV | Roivant Sciences Ltd. | 0.55% | Equity (US) | US |
| CRS | Carpenter Technology Corporation | 0.54% | Equity (US) | US |
| NTNX | Nutanix Inc. Class A | 0.53% | Equity (US) | US |
| DT | Dynatrace Inc. | 0.53% | Equity (US) | US |
| CW | Curtiss-Wright Corporation | 0.53% | Equity (US) | US |
| MTSI | MACOM Technology Solutions Holdings Inc. | 0.53% | Equity (US) | US |
| EWBC | East West Bancorp Inc. | 0.51% | Equity (US) | US |
| ITT | ITT Inc. | 0.51% | Equity (US) | US |
| RGA | Reinsurance Group of America Incorporated | 0.51% | Equity (US) | US |
| TOST | Toast Inc. Class A | 0.49% | Equity (US) | US |
| WCC | WESCO International Inc. | 0.48% | Equity (US) | US |
| SN | SharkNinja Inc. | 0.48% | Equity (US) | US |
| BURL | Burlington Stores Inc. | 0.47% | Equity (US) | US |
| EXEL | Exelixis Inc. | 0.46% | Equity (US) | US |
| CLH | Clean Harbors Inc. | 0.46% | Equity (US) | US |
| RBC | RBC Bearings Incorporated | 0.45% | Equity (US) | US |
| TLN | Talen Energy Corp | 0.45% | Equity (US) | US |
| CDE | Coeur Mining Inc. | 0.45% | Equity (US) | US |
| PFGC | Performance Food Group Co | 0.45% | Equity (US) | US |
| APG | APi Group Corporation | 0.45% | Equity (US) | US |
| DOCU | DocuSign Inc. | 0.44% | Equity (US) | US |
| GWRE | Guidewire Software Inc. | 0.44% | Equity (US) | US |
| LSCC | Lattice Semiconductor Corporation | 0.44% | Equity (US) | US |
| TRU | TransUnion | 0.43% | Equity (US) | US |
| RBA | RB Global Inc. | 0.43% | Equity (Foreign) | CA |
| ARMK | Aramark | 0.43% | Equity (US) | US |
| RNR | RenaissanceRe Holdings Ltd. | 0.43% | Equity (Foreign) | BM |
| SGI | Somnigroup International Inc. | 0.43% | Equity (US) | US |
| WPC | W. P. Carey Inc. | 0.42% | Equity (US) | US |
| SUI | Sun Communities Inc. | 0.42% | Equity (US) | US |
| NBIX | Neurocrine Biosciences Inc. | 0.42% | Equity (US) | US |
| PNFP | Pinnacle Financial Partners Inc. | 0.42% | Equity (US) | US |
Chart
Seasonality
| Month | '21 | '22 | '23 | '24 | '25 | '26 | Avg |
|---|---|---|---|---|---|---|---|
| Jan | 3.05% | -7.54% | 9.76% | -1.42% | 3.94% | 2.66% | 1.74% |
| Feb | 4.59% | 0.11% | -3.41% | 4.46% | -3.13% | 3.18% | 0.97% |
| Mar | 1.80% | 3.00% | -3.67% | 4.66% | -3.51% | -6.32% | -0.67% |
| Apr | 2.96% | -7.68% | -0.72% | -5.36% | -2.90% | 6.82% | -1.15% |
| May | -0.36% | 0.12% | -3.14% | 4.39% | 4.79% | 2.45% | 1.38% |
| Jun | -1.90% | -9.20% | 7.87% | -1.20% | 3.33% | 3.43% | 0.39% |
| Jul | -0.58% | 9.50% | 3.91% | 6.88% | 0.34% | -1.78% | 3.04% |
| Aug | 2.36% | -3.11% | -2.69% | 2.14% | 4.95% | -1.00% | 0.44% |
| Sep | -4.52% | -8.85% | -6.51% | 3.45% | 0.59% | -3.42% | -3.21% |
| Oct | 4.19% | 7.38% | -4.01% | 0.11% | -0.83% | 0.09%* | 1.16% |
| Nov | -5.00% | 5.59% | 7.78% | 8.66% | 2.16% | -- | 3.84% |
| Dec | 6.55% | -5.72% | 5.66% | -7.21% | 0.18% | -- | -0.11% |
| Total | 13.16% | -17.28% | 9.47% | 19.92% | 9.82% | 5.58% | 6.78% |
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: $665.30
SMA 50: $677.95
SMA 200: $665.10
Current: $664.00
EMA 12: $665.44
EMA 26: $668.33
MACD: -2.8905 | Signal: 0.8537
BEARISH
ADX (14): 35.18
TREND
+DI: 17.27
−DI: 30.12
Momentum Oscillators
RSI (14): 45.90
NEUTRAL
Stoch %K: 51.04
Stoch %D: 45.69
Williams %R: -63.29
Volume & Volatility
BB Upper: $674.54
BB Lower: $656.05
NEUTRAL
OBV: -1,696,105
Vol SMA 20: 722,816
Vol ROC: -34.34%
ATR: $8.18
True Range: $11.32
HV 20: 12.5%
HV 30: 11.4%
HV 60: 12.0%
Data Summary
Data Points: 500
Last Updated:
Date Range: 2024-10-24T00:00:00 – 2026-10-22T00:00:00
AI Analysis
LLM Stock Analysis Report
SYMBOL: MDY
Executive Summary BULLISH (Confidence Level: 6/10)
Key drivers:
- Mildly positive earnings sentiment
- Low volatility, moderate correlation with market
Primary risks:
- Potential for increased trading volume and price movements based on news headlines
- Slightly high put/call ratio indicating bearish sentiment
Investment thesis: MDY's current price action is characterized by a consolidating pattern, reflecting the stock's historical beta of 0.97. The recent earnings information is unavailable, but the options market indicates a moderate expected move of $24.75 (32 DTE) and a put/call volume ratio of 14.13, which could be interpreted as bearish sentiment.
Recent news sentiment impact: The recent headlines have been generally positive, with articles highlighting investment opportunities in AI-related ETFs like MDY. However, the overall sentiment is neutral, with no strong catalysts driving price movements.
Technical Analysis
Trend direction:
- Short-term: Consolidating (1-4 weeks)
- Medium-term: Uptrend (1-3 months)
- Long-term: Uptrend (3-12 months)
Support/Resistance levels:
- SMA 20: $690.96
- SMA 50: $693.31
- SMA 200: $657.24
Momentum signals: RSI (14): 36.29 (neutral), indicating no strong buy or sell signal. MACD: -5.64 / Signal: -2.27 / Histogram: -3.36 (bearish), suggesting a possible correction.
Volume analysis:
- Volume SMA 20: 503366.40
- On-Balance Volume (OBV): -1071706.54, indicating a potential bearish trend.
- Volume Rate of Change: 37.58%, reflecting moderate trading activity.
News & Sentiment Analysis
Recent headlines summary: The recent news articles have been generally neutral, with no strong catalysts driving price movements. However, the sentiment is slightly positive due to articles highlighting investment opportunities in AI-related ETFs like MDY.
Sentiment assessment: NEUTRAL
Catalyst identification:
- No immediate or near-term catalysts identified
- Medium-term earnings expectations are unavailable
Market narrative: The market is currently reflecting a consolidating pattern, with no strong news headlines driving price movements. This could be attributed to the relatively low volatility and moderate correlation with the market.
Risk & Volatility Assessment
Beta interpretation: 0.97 (moderate volatility)
Volatility regime:
- Current vs historical volatility levels: Moderately high
Options market signals: IV Rank: 7.3% (Low - shows if volatility is historically high/low) Current IV: 21.1% Expected Move: $24.75 (32 DTE), 7-DTE: $10.90 Volume Flow: 61 calls vs 862 puts Open Interest: 132 calls vs 1,333 puts
Downside protection: Support levels and risk management considerations:
- SMA 20: $690.96
- SMA 50: $693.31
- SMA 200: $657.24
Market Context & Positioning
Sector performance: Relative strength vs sector/market:
- MDY is outperforming the market, indicating a strong trend.
Institutional activity: Volume patterns suggesting institutional interest:
- Moderate trading activity, with institutions potentially holding a neutral view on MDY.
Correlation analysis: How stock moves relative to market (R-squared interpretation):
- MDY has a moderate correlation of 0.81 with the market.
Relative valuation: Position within trading range:
- MDY is currently trading near its mean reversion level, indicating a possible rebound.
Key Levels & Action Items
Critical price levels:
- SMA 20: $690.96
- SMA 50: $693.31
- SMA 200: $657.24
Breakout/breakdown levels:
- No immediate or near-term catalysts identified
- Medium-term earnings expectations are unavailable
Time-sensitive catalysts:
- No upcoming events or announcements identified
Risk management: Stop-loss levels and position sizing considerations:
- Conservative stop-loss at $655 (10% below SMA 200)
- Position sizing: 2-3% of portfolio
Analysis Guidelines
Data interpretation:
- RSI: >70 overbought (potential sell signal), <30 oversold (potential buy signal)
- MACD: Crossover above signal line = bullish momentum, below = bearish
- Moving Averages: Price above MA = uptrend, below = downtrend
- Bollinger Bands: Price touching upper band = overbought, lower band = oversold
News impact assessment:
- Positive news: Earnings beats, product launches, partnerships, analyst upgrades
- Negative news: Earnings misses, regulatory issues, downgrades, management changes
- Neutral news: General market commentary, routine announcements
- Catalyst timeline: Immediate (1-7 days), Near-term (1-4 weeks), Medium-term (1-3 months)
Risk assessment criteria:
- High risk: Beta >1.5, high volatility, negative news sentiment, technical breakdown
- Medium risk: Beta 0.8-1.5, moderate volatility, mixed signals
- Low risk: Beta <0.8, low volatility, positive fundamentals, strong technical support
Generated
News
All MDY news →
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Showing 1–10 of 50
Page 1 of 5
MDY Options Activity & IV Rank
MDY IV rank history, 52-week IV rank and IV percentile →
Volatility Metrics
Current IV: 17.4%
7-DTE IV: —
Expected Move: $26.00
7-DTE Move: $26.00
Days to Exp: 29 (2026-11-20)
Options Flow
Call Volume: 155
Put Volume: 571
P/C Volume: 3.684
BEARISH
Call OI: 809
Put OI: 961
P/C OI: 1.188
Total OI: 1,770
ATM Options Pricing
ATM Call: $12.95
ATM Put: $13.05
Call %: 2.0%
Put %: 2.0%
Chain Summary
Chain Volume: 27,817
Chain OI: 50,768
Last Updated: 10/22/2026
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
LOW γ vs HISTORY
Estimated net dealer gamma is at the 16th percentile of this name's own daily history, near the low end of its range. This describes current positioning; it is not a forecast or a trading signal.
Gamma percentile
16%
vs own history
GEX tilt
-0.47
OI-weighted, today
Vanna tilt
+0.83
δ-sensitivity to IV
Charm tilt
-0.79
δ-decay vs time
Vanna tilt +0.83: the estimated dealer exposure leans positive, so the modeled hedge would shift noticeably if implied volatility changed.
Charm tilt -0.79: the estimated dealer exposure leans negative, so the modeled hedge would shift noticeably as time passes and options approach expiry.
? What is this?
· 66 ATM contracts, 11k total OI
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.
Skew (Wing IV − ATM IV)
DTE:
Wing Δ:
Wing vs ATM
IV(put wing) − IV(ATM), in vol pointsHow 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 sideWhich 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
No data
30 DTE / 10d
56%
+6.6
pts
EXTREME
ATM 17.3% / Wing 24.0%
Extreme reading.
Historically these have been contrarian — on the small set of observed earnings-day cases, large negative wing-vs-ATM gaps (calls pricing much richer than puts at the same delta) preceded sharp drops in the underlying within 1-12 days. Not financial advice and the dataset is small.
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)57.1MediumOct 22
Straddle Price (30 DTE)$26.00Oct 22
Beta Analysis
Risk Metrics
Beta: 0.9443
Alpha: -0.75%
Correlation: 0.8037
R-Squared: 64.6%
Stock Volatility: 15.0%
Market Volatility: 12.7%
Analysis Details
Benchmark: SPY
Data Points: 251
Period: 252 trading days
Data Points: 251
Period: 252 trading days
Interpretation:
Moderate volatility - stock generally follows market
Moderate volatility - stock generally follows market
Beta & Alpha Over Time
MDY Institutional Ownership (13F)
Latest filings — 2026-09-30Institutional 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.
13 filers$467.20M notional
| # | Filer | Notional Value | % of Total | Period |
|---|---|---|---|---|
| 1 | Jane Street Group, LLC Custodian | $148.69M | 31.83% | 2026-06-30 |
| 2 | Susquehanna International Group, LLP Custodian | $129.98M | 27.82% | 2026-06-30 |
| 3 | Citadel Advisors LLC Custodian | $67.52M | 14.45% | 2026-06-30 |
| 4 | BNP Paribas Financial Markets Custodian | $49.80M | 10.66% | 2026-06-30 |
| 5 | IMC-Chicago, LLC Custodian | $37.98M | 8.13% | 2026-06-30 |
| 6 | Simplex Trading, LLC Custodian | $11.39M | 2.44% | 2026-06-30 |
| 7 | Citigroup Inc. Custodian | $8.44M | 1.81% | 2026-06-30 |
| 8 | Point72 Asset Management, L.P. | $6.54M | 1.40% | 2026-06-30 |
| 9 | Wolverine Trading, LLC Custodian | $3.63M | 0.78% | 2025-09-30 |
| 10 | Cubist Systematic Strategies, LLC | $2.03M | 0.43% | 2025-09-30 |
| 11 | Walleye Trading LLC | $914.34K | 0.20% | 2026-06-30 |
| 12 | Millennium Management LLC Custodian | $211.00K | 0.05% | 2026-06-30 |
| 13 | Kingsview Wealth Management, LLC | $76.68K | 0.02% | 2026-06-30 |
15 filers$890.79M notional
| # | Filer | Notional Value | % of Total | Period |
|---|---|---|---|---|
| 1 | BNP Paribas Financial Markets Custodian | $504.93M | 56.68% | 2026-06-30 |
| 2 | Jane Street Group, LLC Custodian | $134.69M | 15.12% | 2026-06-30 |
| 3 | Susquehanna International Group, LLP Custodian | $92.14M | 10.34% | 2026-06-30 |
| 4 | Citigroup Inc. Custodian | $52.75M | 5.92% | 2026-06-30 |
| 5 | BASSWOOD CAPITAL MANAGEMENT, L.L.C. | $30.81M | 3.46% | 2026-06-30 |
| 6 | BRANT POINT INVESTMENT MANAGEMENT LLC | $28.13M | 3.16% | 2026-06-30 |
| 7 | Barclays PLC Custodian | $16.88M | 1.90% | 2026-06-30 |
| 8 | IMC-Chicago, LLC Custodian | $9.99M | 1.12% | 2026-06-30 |
| 9 | Point72 Asset Management, L.P. | $9.35M | 1.05% | 2026-06-30 |
| 10 | Simplex Trading, LLC Custodian | $3.73M | 0.42% | 2026-06-30 |
| 11 | Citadel Advisors LLC Custodian | $2.95M | 0.33% | 2026-06-30 |
| 12 | Wolverine Trading, LLC Custodian | $2.08M | 0.23% | 2025-09-30 |
| 13 | Cubist Systematic Strategies, LLC | $1.37M | 0.15% | 2025-09-30 |
| 14 | Black Maple Capital Management LP | $703.34K | 0.08% | 2026-06-30 |
| 15 | GROUP ONE TRADING LLC Custodian | $281.34K | 0.03% | 2026-06-30 |
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
2.05M
SI % of Float
5.30%
Days to Cover
2.87
Short Vol Ratio
67.5%
Free Float
—
Float %
—
Short interest 2026-09-30 • Short volume 2026-10-22
Constituent Performance
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Constituents
| Symbol | Name | Weight % | Price | 1 Day | 1 Week | 1 Month |
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