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Generation Bio Ownership | Who Owns Generation Bio?

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Generation Bio Ownership Summary

Generation Bio is owned by 19.32% institutional investors, 14.40% insiders, and 66.28% retail investors. Price t rowe associates inc /md/ is the largest institutional shareholder, holding 13.90% of GBIO shares. US Small-Cap Growth II Equity Comp is the top mutual fund, with 7.99% of its assets in Generation Bio shares.

GBIO Ownership Benchmark

TypeName% Inst% Insiders% Retail
StockGeneration Bio19.32%14.40%66.28%
SectorHealthcare Stocks 57.39%9.93%32.68%
IndustryBiotech Stocks 68.48%9.65%21.87%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

HolderShares% HoldingValue
Price t rowe associates inc /md/9.28M13.90%$9.84M
Atlas venture life science advisors8.28M12.41%$8.78M
Fmr4.63M6.93%$4.90M
Blackrock funding, inc. /de3.46M5.18%$3.67M
Blackrock3.29M4.96%$9.29M
Bank of america corp /de/2.98M4.49%$8.41M
Siren2.98M4.47%$3.16M
Artal group2.83M4.26%$7.98M
Vanguard group2.64M3.96%$2.80M
Jefferies financial group2.26M3.39%$2.40M

Top Institutional Shareholders by % of Total Assets

HolderShares% AssetsValue
Atlas venture life science advisors8.28M1.07%$8.78M
Artal group2.83M0.20%$7.98M
Siren2.98M0.14%$3.16M
Ecor1 capital2.05M0.08%$2.17M
Pfm health sciences, lp787.91K0.05%$835.19K
Palo alto investors lp150.47K0.02%$159.50K
Baker bros. advisors lp1.94M0.02%$2.06M
Jefferies financial group2.26M0.01%$2.40M
Yiheng capital management191.53K0.01%$203.02K
Bridgeway capital management246.80K0.01%$261.61K

Top Buyers

HolderShares% AssetsChange
Jefferies financial group2.26M0.01%2.26M
Renaissance962.96K0.00%368.66K
Jacobs levy equity management301.05K0.00%268.70K
Blackrock3.29M0.00%245.40K
Ubs group1.05M0.00%206.62K

Top Sellers

HolderShares% AssetsChange
Bellevue group---3.92M
Fmr4.63M0.00%-694.22K
D. e. shaw344.92K0.00%-143.23K
Bridgeway capital management246.80K0.01%-77.20K
Price t rowe associates inc /md/9.28M0.00%-72.53K

New Positions

HolderShares% AssetsChangeValue
Jefferies financial group2.26M0.01%2.26M$2.40M
Wellington management group llp119.36K0.00%119.36K$336.58K
Integrated wealth concepts72.72K0.00%72.72K$77.08K
Squarepoint ops65.63K0.00%65.63K$69.57K
Intech investment management23.34K0.00%23.34K$24.74K

Sold Out

HolderChange
Nelson, van denburg & campbell wealth management group-9.00
Srs capital advisors-38.00
Capital performance advisors llp-45.00
Gamma investing-50.00
Point72 (difc)-218.00

Institutional Ownership Trends

DateHoldingsChange %SharesChange %OwnershipChange %Increased PositionChange %Decreased PositionChange %
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%
Jun 30, 202477-55,483,2730.97%831.21%4110.81%23-14.81%
Mar 31, 202477-54,950,2874.52%831.31%37-27.45%2780.00%
Dec 31, 202377-2.53%52,571,581-8.10%791.05%5182.14%15-42.31%

Top Mutual Funds Shareholders

HolderShares% HoldingChange
US Small-Cap Growth II Equity Comp5.34M7.99%-4.59K
T. Rowe Price New Horizons5.34M7.96%-
BB Biotech AG Ord3.92M5.87%-
Fidelity Growth Compy Commingled Pl S2.00M2.99%3.35K
Fidelity Growth Compy Commingled Pl O1.94M2.91%-
Fidelity Growth Company Fund1.77M2.65%-
Vanguard Total Stock Mkt Idx Inv1.56M2.32%-
Vanguard US Total Market Shares ETF1.56M2.32%-
T. Rowe Price Health Sciences1.55M2.31%-
iShares Russell 2000 ETF1.27M1.90%-11.05K

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 Q12-
2024 Q4--
2024 Q3-1
2024 Q2--
2024 Q1-2

GBIO Ownership FAQ

Who Owns Generation Bio?

Generation Bio shareholders are primarily institutional investors at 19.32%, followed by 14.40% insiders and 66.28% retail investors. The average institutional ownership in Generation Bio's industry, Biotech Stocks , is 68.48%, which Generation Bio falls below.

Who owns the most shares of Generation Bio?

Generation Bio’s largest shareholders are Price t rowe associates inc /md/ (9.28M shares, 13.90%), Atlas venture life science advisors (8.28M shares, 12.41%), and Fmr (4.63M shares, 6.93%). Together, they hold 33.24% of Generation Bio’s total shares outstanding.

Does Blackrock own Generation Bio?

Yes, BlackRock owns 4.96% of Generation Bio, totaling 3.29M shares as of Jun 2024. This represents 0.00% of BlackRock's total assets, with a market value of 9.29M$. In the last quarter, BlackRock increased its holdings by 245.4K shares, a 8.05% change.

Who is Generation Bio’s biggest shareholder by percentage of total assets invested?

Atlas venture life science advisors is Generation Bio’s biggest shareholder by percentage of total assets invested, with 1.07% of its assets in 8.28M Generation Bio shares, valued at 8.78M$.

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 7.99% of its total shares outstanding invested in 5.34M Generation Bio shares.

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