Generation Bio Co. Common Stock(GBIO)

Stock quote, options chain, IV rank, technicals, AI analysis, and institutional ownership.

GBIO iron condor setups GBIO expected move GBIO IV rank history

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.

Snapshot
$5.61
52-Week Range
$3.00 – $6.95
YTD
+3.03%
IV Rank (30D)
0
Straddle Price
$4.65
P/C Vol Ratio
0.00
Market Cap
$0.0B
Info
Industry (SIC)
PHARMACEUTICAL PREPARATIONS (2834)
Exchange
XNAS
Market Cap
$0.0B

Generation Bio Co is a genetics medicine company focused on creating gene therapies to provide durable and redosable treatments for patients suffering from rare and untreated diseases. The company focuses on liver and retina-related diseases. It is developing two distinct and complementary platforms that It believes will enable differentiated therapeutic applications. Its first platform is a potent, selective ctLNP delivery system for nucleic acids, which is designed to avoid off-target clearance by the liver and spleen, enabling ctLNPs to persist in systemic circulation and allowing for selec…

Price History
Seasonality
MonthAvg ReturnYears of Data
Jan +3.42% 6
Feb -3.00% 6
Mar +13.17% 5
Apr -0.81% 5
May -9.44% 5
Jun +2.67% 6
Jul +4.70% 6
Aug +10.90% 6
Sep -3.67% 6
Oct -21.96% 6
Nov +8.97% 6
Dec -17.77% 6
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: $5.61
SMA 50: $5.49
SMA 200: $5.08
Current: $5.34
EMA 12: $5.60
EMA 26: $5.58
MACD: 0.0174 | Signal: -0.0198
BULLISH
ADX (14): 15.80
RANGE
+DI: 13.45
−DI: 21.45
Momentum Oscillators
RSI (14): 39.71
NEUTRAL
Stoch %K: 52.43
Stoch %D: 70.63
Williams %R: -100.00
Volume & Volatility
BB Upper: $5.79
BB Lower: $5.43
OVERSOLD
OBV: 11,283,936
Vol SMA 20: 133,309
Vol ROC: 756.76%
ATR: $0.19
True Range: $0.40
HV 20: 35.3%
HV 30: 32.7%
HV 60: 34.6%
Data Summary
Data Points: 500
Last Updated: 2026-06-13T13:41:21.130000
Date Range: 2024-02-09T00:00:00 – 2026-02-06T00:00:00
AI Analysis

Choose Frenzy-Fast™ for quick analysis or Frenzy-Pro™ for comprehensive analysis.

Analysis includes technical indicators, news sentiment, risk assessment, and specific price levels to watch.

News
Earnings History
6 of 6 under expected move
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
2024-08-07 After-Close 70.95% 8.11% 0.11x Within
2024-11-06 Pre-Market 84.47% 9.59% 0.11x Within
2025-03-13 Pre-Market 757.01% 2.67% 0.00x Within
2025-05-07 Pre-Market 523.35% 4.74% 0.01x Within
2025-08-12 Pre-Market 120.05% 2.72% 0.02x Within
2025-11-05 Pre-Market 90.48% 1.14% 0.01x Within
Options Activity
IV Rank (30D)
0
IV Rank (7D)
0
Avg IV
0.0%
Straddle (30D)
$4.65
Straddle (7D)
$4.65
P/C Volume
0.00
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)

RR25 and BF25 from the live options chain. 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.

Volatility Surface

Enter a ticker to render the implied volatility surface.

IV Rank (7 DTE)
IV Rank (30 DTE)
Straddle Price (30 DTE)
Beta Analysis
Beta (1Y vs SPY)
1.32
Correlation (SPY)
13.4%
R²
0.02
Ann. Volatility
108.6%
SPY Volatility
11.0%

High volatility - stock moves more than market

Beta & Alpha Over Time
Institutional Ownership (13F)
Latest filings — 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.

6 filers701,403 shares$4.04M value
# Filer Shares Value % of Total % of Float Period
1 Opaleye Management Inc. 310,000 $1.76M 43.63% — 2025-12-31
2 VANGUARD GROUP INC Custodian 229,833 $1.31M 32.34% — 2025-12-31
3 MORGAN STANLEY Custodian 161,378 $916.63K 22.71% — 2025-12-31
4 Accent Capital Management, LLC 61 $53.26K 1.32% — 2026-03-31
5 Essential Partners LLC 130 $42 <0.01% — 2025-06-30
6 HUNTINGTON NATIONAL BANK Custodian 1 $0 0.00% — 2026-03-31
# Filer Notional Value % of Total Period
# Filer Notional Value % of Total Period
Insider Activity
Latest: 2026-02-09
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
2026-02-09 Ronald Harold Wilfred Cooper Director U −950 — EDGAR
2026-02-09 Anthony G. Quinn Director U −37,211 — EDGAR
2026-02-09 Yalonda Howze INTERIM CEO AND PRESIDENT U −3,759 — EDGAR
2026-02-09 Gustav Christensen Director U −13,142 — EDGAR
2026-02-09 Catherine Stehman-Breen Director U −4,752 — EDGAR
2026-02-09 GEOFF MCDONOUGH Director U −188,638 — EDGAR
2026-02-09 Kevin John Conway CHIEF FINANCIAL OFFICER U −2,072 — EDGAR
2026-02-09 Dannielle Appelhans Director U −1,999 — EDGAR
2026-02-09 Atlas Venture Associates X, LLC 10%+ Owner U −4,967,676 — EDGAR
2026-02-09 JEFFREY M JONAS Director Disp (D) −24,366 opt — EDGAR
2026-02-09 Donald William Nicholson Director U −21,357 — EDGAR
2026-02-09 Jason P Rhodes Director U −827,946 — EDGAR
2026-02-09 Charles A Jr Rowland Director U −53,475 — EDGAR
2026-02-04 GEOFF MCDONOUGH Director Mixed +1,032 $5.64 -$3.1K EDGAR
2026-02-04 Yalonda Howze INTERIM CEO & PRESIDENT Mixed +1,178 $5.64 -$2.8K 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.
Insider Holdings
17 insiders · @ $5.34
Officers, directors, and 10%+ owners 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 ATLAS VENTURE ASSOCIATES X, L.P. 10%+ Owner 9,111,939 $48.66M -$14.46M 2 2021-04-14
2 Atlas Venture Fund X, L.P. 10%+ Owner 8,278,876 $44.21M $0 4 2021-09-21
3 Atlas Venture Opportunity Fund I, L.P. 10%+ Owner 7,111,939 $37.98M -$8.24M 1 2021-09-29
4 Thomas G. Jr. Roberts 10%+ Owner 3,437,638 $18.36M $76.00M 1 2020-06-17
5 William Seybold 10%+ Owner 3,437,638 $18.36M $30.40M 1 2020-06-17
6 Artal Group S.A. 10%+ Owner 2,814,191 $15.03M $136.80M 1 2020-06-18
7 Eli Casdin 10%+ Owner 1,611,215 $8.60M $24.70M 1 2020-06-18
8 Wellington Biomedical Innovation Master Investors (Cayman) I L.P. 10%+ Owner 1,012,546 $5.41M $20.90M 1 2020-06-18
9 DEERFIELD PARTNERS, L.P. 10%+ Owner 961,215 $5.13M $17.10M 1 2020-06-16
10 Mark D. Angelino CHIEF OPERATING OFFICER 516,583 $2.76M -$432.7K 3 2021-01-20
11 Douglas Kerr CHIEF MEDICAL OFFICER 385,628 $2.06M -$1.55M 16 2024-01-31
12 Matthew Stanton CHIEF SCIENTIFIC OFFICER 247,319 $1.32M -$2.90M 32 2024-10-17
13 Matthew Norkunas CHIEF FINANCIAL OFFICER 56,659 $302.6K $0 16 2024-10-17
14 Tracy Zimmermann CHIEF DEVELOPMENT OFFICER 49,164 $262.5K -$559.1K 17 2024-01-31
15 Phillip Samayoa CHIEF SCIENTIFIC OFFICER 14,172 $75.7K -$30.0K 20 2025-10-17
16 Antoinette Paone CHIEF OPERATING OFFICER 3,705 $19.8K -$128.7K 27 2025-10-17
17 Atlas Venture Associates Opportunity I, LLC 10%+ Owner 616 $3.3K -$21.75M 2 2021-06-28
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.
ETF Holders
# ETF Provider Weight $ Exposure ETF AUM As Of
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.