RBBN Ribbon Communications Inc. Common Stock

XNAS 1.34 Delayed
Find condors

Stock quote, options chain, IV rank, technicals, AI analysis, and institutional ownership. Iron condor setups Fibonacci levels Insider trading

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.

RBBN $1.34 —
Key stats
$1.34
Pre-market $1.37 +2.24%
52-Week Range
$1.28 – $3.55
YTD
-53.79%
Straddle Price
$1.30
P/C Vol Ratio
0.20
Market Cap
$0.3B
Open
$1.40
Day Range
$1.32 – $1.40
Volume
1,358,567
Prev Close
$1.40
Fair Value
+50.0% vs price

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)4.96%
Beta vs SPY1.21
Cost of Equity (CAPM)11.61% (VRP-adj)
WACC8.02%
Volatility Risk Premium+250.3pp (IV − HV30), ERP adj +50bps
Effective Tax Rate21.0%
Rev. Growth (YoY, DCF input)-10.0%
DCF Horizon5 years explicit + fade
Free Cash Flow (TTM)$0.0B
Return on Equity (TTM)4.0%
Book / Price176.5% — banking bias active (P/B is primary)
Gross Margin (TTM)49.4%
FCF Margin (TTM)0.9%
Debt / Equity0.77
Quality Score0/6 — cyclical/struggling (5y DCF)
SMA 50$1.78 (Market Anchor value)
SMA 20 / Bollinger Mid$1.57
Bollinger Width / SMA202809.9% (drives anchor stability)
Net Debt$0.3B
Market Cap$0B
Peers used for multiples: EGHT, OSPN, SWKS, TBCH (filtered from 8 ETF-co-members; sector bias active)
Blended Fair Value
$4.73
Deviation
+50.0%
MethodImplied PriceWeightDetail
DCF $-1.01 0%
DDM (Gordon) n/a 0%
Peer P/E $10.98 8% median 64.6× · 3 peers
Peer EV/EBITDA $5.28 11% median 18.1× · 4 peers
Peer P/B $7.26 14% median 3.1× · 4 peers
Peer P/S $9.34 14% median 2.0× · 4 peers
Market Anchor (SMA50) $1.78 53% stability 76% (BB-width)
Options Expected (B-L 30d) n/a 0%
As of 2026-10-27 · updated
About
Industry (SIC)
SERVICES-COMPUTER INTEGRATED SYSTEMS DESIGN (7373) · industry map
Exchange
XNAS
Market Cap
$0.3B
Employees
3,080
List Date
2000-05-25
CIK
0001708055
Next Earnings
2026-10-27 (After-Close)
EPS Forecast
$0.01 (2 est.)
Headquarters
Plano, TX
Homepage
https://www.ribboncommunications.com

Ribbon Communications Inc provides communications technology to service providers and enterprises, offering software and high-performance hardware products, network solutions, and services for secure data and voice communications, as well as high-bandwidth networking for residential and enterprise customers across industries such as finance, education, government, utilities, and transportation. It operates through two segments: Cloud and Edge, which generate maximum revenue and deliver software-centric, cloud-native solutions for VoIP, VoLTE, VoNR, and unified communications, and IP Optical Ne…

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
'21'22'23'24'25'26Avg
Jan15.12%-26.11%27.64%0.33%3.54%-9.66%1.81%
Feb8.00%-31.07%17.37%-5.97%20.10%-19.20%-1.79%
Mar-6.49%6.55%-19.91%8.47%-11.91%-12.76%-6.01%
Apr-20.02%10.58%-23.12%-0.63%-16.41%20.55%-4.84%
May14.29%-19.14%3.35%-1.57%4.64%12.00%2.26%
Jun2.28%2.36%-2.45%7.52%14.57%-24.27%0.00%
Jul-9.44%11.51%11.19%2.73%-10.05%-9.13%-0.53%
Aug-4.11%8.00%-7.50%7.91%13.33%-6.13%1.92%
Sep-8.00%-32.73%-9.46%4.50%-5.47%-9.97%-10.19%
Oct-10.03%14.72%-26.85%14.47%-11.11%-22.09%*-6.82%
Nov-4.89%-2.69%14.52%6.83%-14.88%---0.22%
Dec15.68%12.05%34.26%6.94%2.86%--14.36%
Total-14.04%-49.67%-2.60%63.03%-17.67%-61.04%-13.66%
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: $1.57
SMA 50: $1.78
SMA 200: $2.27
Current: $1.34
EMA 12: $1.46
EMA 26: $1.59
MACD: -0.1291 | Signal: -0.0120
BEARISH
ADX (14): 32.41
TREND
+DI: 12.56
−DI: 31.34

Momentum Oscillators

RSI (14): 34.39
NEUTRAL
Stoch %K: 16.13
Stoch %D: 16.18
Williams %R: -90.11

Volume & Volatility

BB Upper: $1.92
BB Lower: $1.23
NEUTRAL
OBV: -12,072,298
Vol SMA 20: 1,394,034
Vol ROC: 7.38%
ATR: $0.10
True Range: $0.08
HV 20: 81.9%
HV 30: 81.1%
HV 60: 61.2%

Data Summary

Data Points: 500
Last Updated:
Date Range: 2024-10-28T00:00:00 – 2026-10-26T00:00:00
AI Analysis

LLM Stock Analysis Report

SYMBOL: RBBN

Executive Summary: Overall Assessment: BEARISH (Confidence Level: 6/10) Key Drivers: High volatility, negative earnings momentum, bearish MACD signal Primary Risks: Unusually high implied volatility, potential breakdown below key support levels Investment Thesis: Short-term bearish trend likely to persist due to recent price action and technical indicators. However, medium-term uptrend potential exists if price can break above resistance. Recent News Sentiment Impact: Negative earnings reports have contributed to the current bearish momentum.

Technical Analysis: Trend Direction: * Short-term (1-4 weeks): BEARISH * Medium-term (1-3 months): NEUTRAL * Long-term (3-12 months): BULLISH

Support/Resistance Levels: * Key support: $1.69 (SMA 200) * Key resistance: $2.09 (Upper Bollinger Band)

Momentum Signals: * RSI: 32.25 (neutral) * MACD: -0.05 / Signal: -0.00 / Histogram: -0.05 (bearish) * Bollinger Bands: oversold

Volume Analysis: * Volume SMA 20: 717783.25 * On-Balance Volume (OBV): 1523822.54 * Volume Rate of Change: 231.13%

News & Sentiment Analysis: Recent Headlines Summary: * Positive news on penny stocks and Ribbon Communications' stock performance * Negative earnings reports contributing to current bearish momentum

Sentiment Assessment: NEGATIVE (due to recent earnings misses)

Catalyst Identification: * Upcoming earnings report could impact short-term price action

Market Narrative: * News sentiment aligns with technical signals, supporting the bearish trend

Risk & Volatility Assessment: Beta Interpretation: HIGH RISK (beta >1.5) Volatility Regime: HIGH VOLATILITY Options Market Signals: * IV rank: 66.5% (Medium) * Put/Call volume ratio: 0.35 (Bullish sentiment)

Market Context & Positioning: Sector Performance: NEUTRAL (vs sector/market) Institutional Activity: MIXED SIGNALS Correlation Analysis: * Correlation with SPY: -0.27

Key Levels & Action Items: Critical Price Levels: * Support: $1.69 * Resistance: $2.09

Breakout/Breakdown Levels: * Breakdown below $1.69 could lead to further losses * Breakout above $2.09 could initiate a medium-term uptrend

Time-Sensitive Catalysts: * Earnings report upcoming (no specific date available)

Risk Management: * Stop-loss levels: $1.50 and $1.80 * Position sizing considerations: 10% to 20% allocation

Generated
News
All RBBN news →
Earnings History
15 of 16 under expected move
Avg Expected Move
25.85%
Avg Actual Move
5.21%
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
2021-01-25 Pre-Market 16.74% 5.58% 0.33x Within
2021-04-28 Pre-Market 4.91% 0.06% 0.01x Within
2023-04-26 Pre-Market 29.54% 2.95% 0.10x Within
2023-07-26 Pre-Market 28.41% 0.29% 0.01x Within
2023-10-25 Pre-Market 29.74% 2.56% 0.09x Within
2024-02-14 Pre-Market 21.17% 4.23% 0.20x Within
2024-04-24 Pre-Market 14.79% 26.46% 1.79x Exceeded
2024-07-24 Pre-Market 33.16% 0.77% 0.02x Within
2024-10-23 Pre-Market 29.24% 0.29% 0.01x Within
2025-02-12 After-Close 23.67% 15.47% 0.65x Within
2025-04-29 After-Close 34.67% 14.40% 0.42x Within
2025-07-23 Pre-Market 35.36% 5.46% 0.15x Within
2025-10-22 Pre-Market 29.70% 0.99% 0.03x Within
2026-02-05 Pre-Market 17.66% 1.12% 0.06x Within
2026-04-28 Pre-Market 24.44% 2.26% 0.09x Within
2026-07-28 Pre-Market 40.44% 0.49% 0.01x Within

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

RBBN Options Activity & IV Rank

Volatility Metrics

Current IV: —
7-DTE IV: —
Expected Move: $1.30
7-DTE Move: $1.30
Days to Exp: 25 (2026-11-20)

Options Flow

Call Volume: 10
Put Volume: 2
P/C Volume: 0.2
BULLISH
Call OI: 10
Put OI: 1
P/C OI: 0.1
Total OI: 11

ATM Options Pricing

ATM Call: $0.05
ATM Put: $1.25
Call %: 3.7%
Put %: 93.3%

Chain Summary

Chain Volume: 108
Chain OI: 1,044
Last Updated: 10/26/2026
Spread Scanner GPU
Full Algorithm Docs ↗

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 21st 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
21%
vs own history
GEX tilt
+0.65
OI-weighted, today
Vanna tilt
+0.60
δ-sensitivity to IV
Charm tilt
-0.82
δ-decay vs time
Vanna tilt +0.60: the estimated dealer exposure leans positive, so the modeled hedge would shift noticeably if implied volatility changed.
Charm tilt -0.82: the estimated dealer exposure leans negative, 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.

· 3 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 26 · No data
30 DTE / 10d —
— pts EXTREME
as of Oct 26 · ATM 238.7% / 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)
Straddle Price (30 DTE)$1.30Oct 26
Beta Analysis

Risk Metrics

Beta: 1.3979
Alpha: -94.47%
Correlation: 0.2779
R-Squared: 7.7%
Stock Volatility: 64.1%
Market Volatility: 12.7%

Analysis Details

Benchmark: SPY
Data Points: 251
Period: 252 trading days
Interpretation:
High volatility - stock moves more than market
Beta & Alpha Over Time
Notable investors who own RBBN
3 of 37 tracked investors
InvestorValueShare of their portfolioRankQ/Q sharesSource
Citadel Hedge fund
Ken Griffin
$2.9M
0.00%
#2551 of 6285+115.9%13F
Millennium Management Hedge fund
Izzy Englander
$1.6M
0.00%
#2680 of 3716+42.2%13F
Rockefeller Capital Management Family office
Rockefeller family
$4K
0.00%
#4300 of 4729-53.5%13F

Hedge funds, activists, holding companies and family offices we track, from their latest 13F (quarter-end value) and Form 4 filings in the last 3 years. Family offices · all institutions

RBBN Institutional Ownership (13F)

Latest filings — 2026-09-30
Diluted shares outstanding: 177,213,000 (as of 2026-03-31)

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.

169 filers136,591,346 shares$313.39M value77.08% of float
# Filer Shares Value % of Total % of Float Period
1 JPMorgan Chase & Co Custodian 52,042,936 $115.54M 36.87% 29.37% 2026-06-30
2 Neuberger Berman Group LLC 18,311,073 $38.67M 12.34% 10.33% 2026-06-30
3 Vanguard Group Inc Custodian 7,833,009 $22.56M 7.20% 4.42% 2025-12-31
4 BlackRock, Inc. Custodian 7,146,590 $16.72M 5.34% 4.03% 2026-06-30
5 Dimensional Fund Advisors LP Custodian 6,286,323 $14.71M 4.69% 3.55% 2026-06-30
6 ROYCE & ASSOCIATES LP 5,090,927 $11.91M 3.80% 2.87% 2026-06-30
7 Vanguard Capital Management LLC 3,925,626 $9.19M 2.93% 2.22% 2026-06-30
8 Vanguard Portfolio Management LLC 3,513,067 $8.22M 2.62% 1.98% 2026-06-30
9 PARADIGM CAPITAL MANAGEMENT INC/NY 3,036,398 $7.11M 2.27% 1.71% 2026-06-30
10 Geode Capital Management, LLC Custodian 2,485,064 $5.82M 1.86% 1.40% 2026-06-30
11 Connor, Clark & Lunn Investment Management Ltd. 2,213,134 $5.18M 1.65% 1.25% 2026-06-30
12 State Street Corp 1,930,153 $4.52M 1.44% 1.09% 2026-06-30
13 D. E. Shaw & Co., Inc. Custodian 1,790,375 $4.19M 1.34% 1.01% 2026-06-30
14 ACADIAN ASSET MANAGEMENT LLC 1,768,227 $4.13M 1.32% 1.00% 2026-06-30
15 AQR Capital Management, LLC Custodian 1,409,795 $3.30M 1.05% 0.80% 2026-06-30
16 FIRST WILSHIRE SECURITIES MANAGEMENT INC 1,404,493 $3.29M 1.05% 0.79% 2026-06-30
17 Citadel Advisors LLC Custodian 1,241,200 $2.90M 0.93% 0.70% 2026-06-30
18 Arrowstreet Capital, Limited Partnership 1,215,230 $2.84M 0.91% 0.69% 2026-06-30
19 Marshall Wace, LLP Custodian 814,132 $1.91M 0.61% 0.46% 2026-06-30
20 Charles Schwab Investment Management, Inc. 800,159 $1.87M 0.60% 0.45% 2026-06-30
21 Northern Trust Corp Custodian 749,823 $1.75M 0.56% 0.42% 2026-06-30
22 Millennium Management LLC Custodian 698,458 $1.63M 0.52% 0.39% 2026-06-30
23 Vanguard Fiduciary Trust Co 612,773 $1.43M 0.46% 0.35% 2026-06-30
24 JACOBS LEVY EQUITY MANAGEMENT, INC 582,093 $1.36M 0.43% 0.33% 2026-06-30
25 Victory Capital Management Inc. 456,421 $1.07M 0.34% 0.26% 2026-06-30
5 filers$454.43K notional
# Filer Notional Value % of Total Period
1 UBS Group AG Custodian $331.11K 72.86% 2026-06-30
2 Citadel Advisors LLC Custodian $64.82K 14.26% 2026-06-30
3 Susquehanna International Group, LLP Custodian $41.18K 9.06% 2026-06-30
4 GROUP ONE TRADING LLC Custodian $13.10K 2.88% 2026-06-30
5 Simplex Trading, LLC Custodian $4.21K 0.93% 2026-06-30
# Filer Notional Value % of Total Period

RBBN Insider Trading (Form 4)

Latest: 2026-10-19
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
2026-10-19 Bruns H Grayson Director Award (A) +19,176 — EDGAR
2026-10-19 Eric S Marmurek EVP, Chief Financial Officer Mixed +22,744 $1.46 -$21.5K EDGAR
2026-10-19 Shaul Shani Director Mixed +200,835 — EDGAR
2026-07-15 Shaul Shani Director Award (A) +11,752 — EDGAR
2026-07-15 Bruns H Grayson Director Award (A) +14,423 — EDGAR
2026-06-17 Eric S Marmurek EVP, Chief Financial Officer Grant (A) +300,000 RSU — EDGAR
2026-06-17 Patrick W Macken EVP, Chief Legal Officer Grant (A) +325,000 RSU — EDGAR
2026-06-17 R Stewart Ewing Jr Director Exer (M) +42,500 — EDGAR
2026-06-17 Scott Mair Director Exer (M) +67,500 — EDGAR
2026-06-17 Stephen J. McCaffery EVP, Global Sales Grant (A) +400,000 RSU — EDGAR
2026-06-17 Bruns H Grayson Director Exer (M) +42,500 — EDGAR
2026-06-17 Shaul Shani Director Exer (M) +42,500 — EDGAR
2026-06-17 Sam Bucci EVP, Chief Operating Officer Grant (A) +500,000 RSU — EDGAR
2026-06-17 Beatriz V Infante Director Exer (M) +42,500 — EDGAR
2026-06-17 Louis Silver Director Grant (A) +63,197 RSU — 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.

RBBN Insider Holdings

14 insiders · @ $1.34
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 JPMORGAN CHASE & CO 10%+ Owner 52,036,572 $69.73M $5.01M 11 2025-04-11
2 Bruce William McClelland Chief Executive Officer 1,594,042 $2.14M $616.2K 24 2026-05-19
3 Bruns H Grayson Director 859,446 $1.15M $1.09M 35 2026-10-19
4 Eric S Marmurek EVP, Chief Financial Officer 581,206 $778.8K -$81.9K 45 2026-10-19
5 Sam Bucci EVP, Chief Operating Officer 536,035 $718.3K -$291.0K 27 2026-06-17
6 Beatriz V Infante Director 385,724 $516.9K -$52.2K 15 2026-06-17
7 Patrick W Macken EVP, Chief Legal Officer 373,826 $500.9K -$129.1K 31 2026-06-17
8 Shaul Shani Director 253,343 $339.5K $0 11 2026-10-19
9 R Stewart Ewing Jr Director 239,891 $321.5K $0 10 2026-06-17
10 Tanya Tamone Director 223,300 $299.2K $0 8 2026-06-17
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.

RBBN Board & Officers

As of SEC filings through Oct 19, 2026

Directors 9

Officers 5

Changes in the last 10 years (77)
May 19, 2026Patrick W Macken listed as EVP, Chief Legal Officer (previously EVP, CLO & Secretary) in SEC filings
May 19, 2026Eric S Marmurek listed as EVP, Chief Financial Officer (previously SVP, CAO & Deputy CFO) in SEC filings
Apr 28, 2026The company announced the departure of John Raymond Townsend as EVP, Chief Financial Officer in an SEC filing
Apr 15, 2026Louis Silver became a director
Oct 27, 2025Stephen J. McCaffery listed as EVP, Global Sales (previously EVP, EMEA and APAC Sales) in SEC filings
Aug 29, 2025The company announced the departure of Dan Redington as EVP, Global Sales in an SEC filing
Nov 1, 2024John Raymond Townsend became EVP, Chief Financial Officer
Oct 17, 2024Eric S Marmurek listed as SVP, CAO & Deputy CFO (previously SVP, Finance & CAO) in SEC filings
Aug 13, 2024The company announced the departure of Miguel A Lopez as EVP, CFO in an SEC filing
Apr 19, 2023Patrick W Macken listed as EVP, CLO & Secretary (previously EVP, Chief Legal Officer) in SEC filings
Feb 22, 2023Dan Redington became EVP, Global Sales
Jan 19, 2023Sam Bucci listed as EVP & COO (previously EVP & GM IP Optical Networks) in SEC filings
Sep 7, 2022Scott Mair became a director
May 27, 2022Krish A Prabhu reported in an SEC filing no longer being a director
Sep 17, 2021Eric S Marmurek listed as SVP, Finance & CAO (previously SVP, CAO) in SEC filings
Jun 17, 2021Anthony Scarfo listed as EVP & GM, Cloud & Edge BU (previously EVP & GM Cloud & Edge) in SEC filings
Mar 2, 2021Patrick W Macken listed as EVP, Chief Legal Officer (previously EVP, CLO & Corp. Sec.) in SEC filings
Feb 16, 2021Sam Bucci listed as EVP & GM IP Optical Networks (previously EVP GM Packet Optical Networks) in SEC filings
Jan 11, 2021Stephen J. McCaffery became EVP, EMEA and APAC Sales
Sep 16, 2020Sam Bucci became EVP GM Packet Optical Networks
Not reported recently (23)
  • JPMORGAN CHASE & CO · Last reported as a 10% owner in an SEC filing dated Apr 11, 2025
  • Mariano de Beer · Last reported as a director in an SEC filing dated Jun 16, 2023
  • Swarth Investments Ltd. · Last reported as a 10% owner in an SEC filing dated Apr 3, 2023
  • Steven M Bruny · Last reported as EVP, Sales - Americas Region in an SEC filing dated Sep 19, 2022
  • Anthony Scarfo · Last reported as EVP & GM, Cloud & Edge BU in an SEC filing dated Sep 19, 2022
  • Fernando Valdivielso · Last reported as EVP Sales of EMEA and APAC in an SEC filing dated Jun 23, 2020
  • Kent Mathy · Last reported as a director in an SEC filing dated Jun 19, 2020
  • Daryl Raiford · Last reported as EVP & CFO in an SEC filing dated Jun 19, 2020
  • Scott E Schubert · Last reported as a director in an SEC filing dated Jun 19, 2020
  • Richard J. Lynch · Last reported as a director in an SEC filing dated Jun 19, 2020
  • Kevin W. Riley · Last reported as EVP and CTO in an SEC filing dated Jun 19, 2020
  • Justin K. Ferguson · Last reported as EVP and General Counsel in an SEC filing dated Jun 19, 2020
  • John R McCready · Last reported as EVP and Chief Strategy Officer in an SEC filing dated Mar 18, 2020
  • Patrick Joggerst · Last reported as CMO & EVP Business Development in an SEC filing dated Mar 18, 2020
  • Kim S Fennebresque · Last reported as a director in an SEC filing dated Feb 24, 2020
  • Franklin W Hobbs IV · Last reported as a director in an SEC filing dated Jun 19, 2019
  • JPMC Heritage Parent LLC · Last reported as a 10% owner in an SEC filing dated Dec 14, 2018
  • David A Walsh · Last reported as President, Kandy in an SEC filing dated Nov 19, 2018
  • Michael R. Swade · Last reported as EVP Global Sales in an SEC filing dated Oct 2, 2018
  • Raymond P Dolan · Last reported as a director in an SEC filing dated Nov 17, 2017
  • Matthew J. Thaler · Last reported as General Counsel & Corp. Secy in an SEC filing dated Nov 9, 2017
  • Heritage PE (OEP) III, L.P. · Last reported as a 10% owner in an SEC filing dated Nov 6, 2017
  • OEP II Partners Co-Invest, L.P. · Last reported as a 10% owner in an SEC filing dated Nov 6, 2017
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.

RBBN Proposed Insider Sales (Form 144)

Latest: 2025-09-08
Last 30d: 0 filings  ·  Last 90d: 0 filings

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.

Filed Filer Role Shares Notice Value Planned Sale Broker Plan Link
2025-09-08 BEATRIZ INFANTE Director 8,692 $34.6K 2025-09-05 Morgan Stanley Smith Barney LLC … — EDGAR
2025-09-08 DANIEL REDINGTON Officer 14,176 $57.0K 2025-09-08 Morgan Stanley Smith Barney LLC … — EDGAR
2025-09-05 DANIEL REDINGTON Officer 155,434 $626.4K 2025-09-05 Morgan Stanley Smith Barney LLC … — EDGAR
2025-09-04 DANIEL REDINGTON Officer 20,000 $83.3K 2025-09-04 Morgan Stanley Smith Barney LLC … — EDGAR
2024-09-13 INFANTE BEATRIZ V Director 5,790 $17.6K 2024-09-13 MORGAN STANLEY SMITH BARNEY LLC … — EDGAR
2024-02-27 Macken Patrick W Officer 42,094 $134.3K 2024-02-27 Commonwealth Financial Network — EDGAR
2024-02-21 Redington Dan Officer 66,000 $211.2K 2024-02-21 Morgan Stanley Smith Barney LLC … — 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
42 ETFs hold RBBN
25 shown · $27.89M total exposure · 0.00% AUM-weighted avg weight
# ETF Provider Weight $ Exposure ETF AUM As Of
1 VTI Vanguard Morningstar Total Stock Market ETF Vanguard 0.00% $4.9M — 2026-09-30
2 VGT Vanguard Information Technology ETF Vanguard 0.00% $4.3M — 2026-09-30
3 IWM iShares Russell 2000 ETF iShares (BlackRock) 0.00% $3.3M $74.6B 2026-10-23
4 DFSV Dimensional US Small Cap Value ETF Dimensional 0.01% $2.5M — 2026-10-23
5 VXF Vanguard Extended Market ETF Vanguard 0.00% $1.8M — 2026-09-30
6 DFAS Dimensional US Small Cap ETF Dimensional 0.00% $1.6M — 2026-10-23
7 SCHA Schwab U.S. Small-Cap ETF Nport 0.01% $1.4M — 2026-05-31
8 IWN iShares Russell 2000 Value ETF iShares (BlackRock) 0.01% $1.2M $13.9B 2026-10-23
9 MSSM Morgan Stanley Pathway Small-Mid Cap Equity ETF Nport 0.14% $1.1M — 2026-05-31
10 VTWO Vanguard Russell 2000 ETF Vanguard 0.01% $963,637 — 2026-09-30
11 DFAC Dimensional US Core Equity 2 ETF Dimensional 0.00% $921,213 — 2026-10-23
12 DFAT Dimensional US Targeted Value ETF Dimensional 0.00% $702,020 — 2026-10-23
13 DFMC Dimensional US Micro Cap ETF Dimensional 0.01% $576,316 — 2026-10-23
14 IWC iShares Micro-Cap ETF iShares (BlackRock) 0.03% $399,203 $1.2B 2026-10-23
15 ITOT iShares Core S&P Total U.S. Stock Market ETF iShares (BlackRock) 0.00% $288,737 $96.5B 2026-10-23
16 EES WisdomTree U.S. SmallCap Fund Nport 0.04% $284,177 — 2026-06-30
17 AVSC Avantis U.S. Small Cap Equity ETF Avantis 0.01% $277,880 $3.2B 2026-10-23
18 GSSC Goldman Sachs ActiveBeta U.S. Small Cap Equity ETF Goldman 0.02% $232,218 $1.0B 2026-10-23
19 BSVO EA Bridgeway Omni Small-Cap Value ETF Nport 0.01% $220,938 — 2026-06-30
20 PRFZ Invesco RAFI US 1500 Small-Mid ETF Nport 0.01% $187,659 — 2026-07-31
21 VFVA Vanguard U.S. Value Factor ETF Vanguard 0.02% $178,058 — 2026-10-23
22 SCHB Schwab U.S. Broad Market ETF Nport 0.00% $161,130 — 2026-05-31
23 DCOR Dimensional US Core Equity 1 ETF Dimensional 0.00% $158,914 — 2026-10-23
24 VTWV Vanguard Russell 2000 Value ETF Vanguard 0.01% $152,242 — 2026-09-30
25 AIMS Acuitas Small Cap Active ETF Nport 0.13% $117,449 — 2026-06-30
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
$0.17
TTM Revenue
$825.88M
TTM Net Income
$31.37M
TTM Op. Cash Flow
$32.94M
Quarterly figures (12 quarters)
QuarterPeriod EndRevenueNet IncomeDiluted EPSOp. Cash Flow
Q1 '262026-03-31$162.61M$-34.49M$-0.20$-22.00M
Q4 '252025-12-31$227.32M$89.06M$0.50$29.24M
Q3 '252025-09-30$215.37M$-12.11M$-0.07$26.49M
Q2 '252025-06-30$220.58M$-11.09M$-0.06$-795.00K
Q1 '252025-03-31$181.28M$-26.23M$-0.15$-3.54M
Q4 '242024-12-31$251.36M$6.36M$0.04$61.77M
Q3 '242024-09-30$210.24M$-13.42M$-0.08$-14.85M
Q2 '242024-06-30$192.62M$-16.82M$-0.10$-9.78M
Q1 '242024-03-31$179.66M$-30.36M$-0.18$13.10M
Q4 '232023-12-31$226.40M$7.08M$0.04$12.84M
Q3 '232023-09-30$203.16M$-13.50M$-0.08$-4.33M
Q2 '232023-06-30$210.62M$-21.48M$-0.13$-9.86M
Q1 2026 • period ending 2026-03-31 • filed 2026-05-06
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
7.88
P/B
0.57
P/S
0.29
EV/EBITDA
7.48
EV/Sales
0.60
ROE
7.5%
ROA
2.7%
Div Yield
0.00%
FCF Yield
13.87%
Debt/Equity
0.77
Current Ratio
—
Market Cap
$237.47M
as of 2026-10-26
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
5.01M
SI % of Float
5.52%
Days to Cover
4.02
Short Vol Ratio
27.1%
Free Float
90.75M
Float %
50.8%
Short interest 2026-09-30 • Short volume 2026-10-26 • Float 2026-08-13