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Generation Bio Ownership | Who Owns Generation Bio?

OverviewForecastRevenueFinancialsChart

Generation Bio Ownership Summary

Generation Bio is owned by 14.25% insiders, and 85.75% retail investors. US Small-Cap Growth II Equity Comp is the top mutual fund, with 7.09% of its assets in Generation Bio shares.

GBIO Ownership Benchmark

TypeName% Inst% Insiders% Retail
StockGeneration Bio-14.25%85.75%
SectorHealthcare Stocks 42.54%10.83%46.63%
IndustryBiotech Stocks 45.22%10.75%44.04%

Institutional Ownership Trends

DateHoldingsChange %SharesChange %OwnershipChange %Increased PositionChange %Decreased PositionChange %
Sep 30, 20251-98.31%38-100.00%----100.00%--100.00%
Jun 30, 202558-28.40%41,332,3174.83%611.78%23-4.17%25-34.21%
Mar 31, 2025821.23%47,707,211-11.41%711.09%24-38.46%38100.00%
Dec 31, 202420-73.33%12,890,700-76.66%190.28%7-73.08%5-81.48%
Sep 30, 202475-3.85%55,236,045-0.45%821.19%26-36.59%2717.39%

Top Mutual Funds Shareholders

HolderShares% HoldingChange
US Small-Cap Growth II Equity Comp4.76M7.09%-509.39K
T. Rowe Price New Horizons475.51K7.06%-1.00
BB Biotech AG Ord3.92M5.87%-
Fidelity Growth Compy Commingled Pl O1.94M2.91%-
Vanguard US Total Market Shares ETF1.56M2.32%-
Vanguard Total Stock Mkt Idx Inv152.41K2.26%-3.33K
T. Rowe Price Health Sciences141.27K2.10%-1.58K
T. Rowe Price New Horizons Tr-Z1.04M1.56%2.03K
Fidelity Growth Company Fund972.42K1.45%-380.52K
Fidelity Growth Compy Commingled Pl S873.41K1.30%-461.25K

Recent Insider Transactions

DateNameRoleActivityValue
Jan 10, 2025Quinn Anthony G.-Buy$120.76K
Jan 13, 2025Quinn Anthony G.-Buy$82.45K
Jul 01, 2024Paone Antoinette CHIEF OPERATING OFFICERSell$18.41K
Jan 02, 2024Paone Antoinette CHIEF OPERATING OFFICERSell$3.96K
Jan 02, 2024Samayoa Phillip CHIEF STRATEGY OFFICERSell$3.96K

Insider Transactions Trends

DateBuySell
2025 Q4--
2025 Q3--
2025 Q2--
2025 Q12-
2024 Q4--

GBIO Ownership FAQ

Who Owns Generation Bio?

Generation Bio shareholders are primarily institutional investors at 0.00%, followed by 14.25% insiders and 85.75% retail investors. The average institutional ownership in Generation Bio's industry, Biotech Stocks , is 45.22%, which Generation Bio falls below.

Does Blackrock own Generation Bio?

BlackRock is not among the top 10 institutional shareholders of Generation Bio.

Who is the top mutual fund holder of Generation Bio shares?

US Small-Cap Growth II Equity Comp is the top mutual fund holder of Generation Bio shares, with 7.09% of its total shares outstanding invested in 4.76M Generation Bio shares.

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