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Generation Bio (GBIO) Institutional Ownership

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$6.61 +2.56 (+63.21%)
Closing price 08/13/2025 04:00 PM Eastern
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$6.54 -0.07 (-0.98%)
As of 06:57 AM Eastern
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Institutional Ownership Changes (13F Filings) for Generation Bio (NASDAQ:GBIO)

Current
Institutional Ownership
Percentage
95.22%
Number of
Institutional Buyers
(last 12 months)
24
Total
Institutional Inflows
(last 12 months)
$85.38M
Number of
Institutional Sellers
(last 12 months)
17
Total
Institutional Outflows
(last 12 months)
$23.41M
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GBIO Institutional Buying and Selling by Quarter

Generation Bio Major Shareholders & Ownership History

Reporting DateMajor Shareholder NameShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
8/13/2025Marshall Wace LLP116,201$37K0.0%N/A1.724%
8/8/2025 Geode Capital Management LLC498,080$159K0.0%-55.1%7.390%
8/1/2025 Y Intercept Hong Kong Ltd148,186$47K0.0%N/A2.211%
6/27/2025Goldman Sachs Group Inc.1,086,098$440K0.0%-10.1%1.620%
5/21/2025 Acadian Asset Management LLC1,159,135$468K0.0%+54.3%1.729%
5/16/2025Goldman Sachs Group Inc.1,086,098$440K0.0%-10.1%1.620%
5/16/2025Jacobs Levy Equity Management Inc.182,005$74K0.0%-41.6%0.272%
5/16/2025AQR Capital Management LLC89,014$36K0.0%N/A0.133%
5/12/2025 Nuveen LLC169,265$69K0.0%N/A0.253%
5/9/2025 Deutsche Bank AG108,771$45K0.0%-40.9%0.162%
5/8/2025Jefferies Financial Group Inc.173,659$70K0.0%-92.3%0.259%
4/22/2025 EWA LLC92,901$38K0.0%N/A0.139%
3/7/2025 Aegis Wealth Management LLC88,890$94K0.1%N/A0.133%
2/27/2025Jefferies Financial Group Inc.2,261,817$2.40M0.0%N/A3.386%
2/17/2025Squarepoint Ops LLC65,628$70K0.0%N/A0.098%
2/17/2025Two Sigma Investments LP120,403$128K0.0%-19.7%0.180%
2/17/2025Two Sigma Advisers LP194,400$206K0.0%-10.5%0.291%
2/17/2025Millennium Management LLC91,578$97K0.0%N/A0.137%
2/17/2025Jacobs Levy Equity Management Inc.311,535$330K0.0%+13.9%0.466%
2/17/2025Jefferies Financial Group Inc.2,261,817$2.40M0.0%N/A3.386%
2/17/2025 Deutsche Bank AG184,173$195K0.0%+688.7%0.276%
2/17/2025D. E. Shaw & Co. Inc.344,922$366K0.0%-29.3%0.516%
2/17/2025Bridgeway Capital Management LLC246,800$262K0.0%-23.8%0.370%
2/14/2025The Manufacturers Life Insurance Company145,094$154K0.0%-11.5%0.217%
2/14/2025Integrated Wealth Concepts LLC72,720$77K0.0%N/A0.109%
2/14/2025Price T Rowe Associates Inc. MD9,279,059$9.84M0.0%-0.8%13.893%
2/14/2025 Dimensional Fund Advisors LP396,237$420K0.0%-10.2%0.593%
2/13/2025Renaissance Technologies LLC962,959$1.02M0.0%+62.0%1.442%
2/12/2025 JPMorgan Chase & Co.297,705$316K0.0%+74.9%0.446%
2/11/2025 Intech Investment Management LLC23,337$25K0.0%N/A0.035%
2/6/2025 Charles Schwab Investment Management Inc.367,026$389K0.0%-13.3%0.550%
2/4/2025 Los Angeles Capital Management LLC245,927$261K0.0%-16.8%0.368%
11/19/2024Barclays PLC76,430$189K0.0%+165.5%0.114%
11/15/2024Barclays PLC76,430$189K0.0%+165.5%0.114%
11/15/2024 XTX Topco Ltd17,922$44K0.0%-86.5%0.027%
11/15/2024Jane Street Group LLC34,783$86K0.0%-29.9%0.052%
11/15/2024State Street Corp992,188$2.45M0.0%+1.2%1.486%
11/15/2024Jacobs Levy Equity Management Inc.273,445$675K0.0%-9.2%0.409%
11/15/2024Baker BROS. Advisors LP1,944,945$4.80M0.0%+61.1%2.912%
11/13/2024FMR LLC5,320,266$13.14M0.0%+0.3%7.966%
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11/12/2024 Charles Schwab Investment Management Inc.423,299$1.05M0.0%+2.1%0.634%
11/6/2024 Cornercap Investment Counsel Inc.28,995$72K0.0%-49.5%0.043%
11/4/2024 Los Angeles Capital Management LLC295,727$730K0.0%-13.5%0.443%
10/3/2024 SG Americas Securities LLC17,067$42K0.0%N/A0.026%
9/16/2024Cubist Systematic Strategies LLC19,046$54K0.0%+91.0%0.029%
8/15/2024The Manufacturers Life Insurance Company164,573$464K0.0%+8.7%0.247%
8/14/2024Cubist Systematic Strategies LLC19,046$54K0.0%+91.0%0.029%
8/12/2024 XTX Topco Ltd132,716$374K0.0%-20.2%0.199%
8/9/2024Renaissance Technologies LLC636,400$1.80M0.0%-4.2%0.957%
8/9/2024 Dimensional Fund Advisors LP485,396$1.37M0.0%-3.7%0.730%
8/8/2024 Cornercap Investment Counsel Inc.57,424$162K0.0%-22.6%0.086%
8/8/2024 American Century Companies Inc.31,786$90K0.0%+199.3%0.048%
8/6/2024 Acadian Asset Management LLC594,569$1.68M0.0%+23.9%0.894%
8/6/2024 Los Angeles Capital Management LLC341,861$964K0.0%-10.4%0.514%
8/1/2024 Rhumbline Advisers78,903$222K0.0%+7.4%0.119%
7/26/2024 Bank of New York Mellon Corp186,756$527K0.0%+31.2%0.281%
5/17/2024Artal Group S.A.2,830,591$11.52M0.3%+0.6%4.255%
5/16/2024Jacobs Levy Equity Management Inc.32,352$132K0.0%-63.5%0.049%
5/15/2024Baker BROS. Advisors LP371,219$1.51M0.0%N/A0.558%
5/15/2024Yiheng Capital Management L.P.191,530$780K0.0%N/A0.288%
5/15/2024Bellevue Group AG3,861,575$15.72M0.2%+6.8%5.808%
5/15/2024Price T Rowe Associates Inc. MD8,878,361$36.14M0.0%+28.2%13.353%
5/10/2024 Acadian Asset Management LLC479,835$1.95M0.0%+113.9%0.722%
5/10/2024 Vanguard Group Inc.2,570,456$10.46M0.0%+0.7%3.866%
5/7/2024 PFG Advisors10,000$41K0.0%N/A0.015%
5/7/2024 SG Americas Securities LLC16,626$68K0.0%-65.7%0.025%
5/1/2024 Mirae Asset Global Investments Co. Ltd.18,259$74K0.0%N/A0.027%
4/5/2024 Los Angeles Capital Management LLC381,661$1.55M0.0%+38.4%0.574%
2/15/2024PFM Health Sciences LP1,622,487$2.68M0.2%-35.5%2.455%
2/12/2024Weiss Asset Management LP81,630$135K0.0%N/A0.124%
2/8/2024Panagora Asset Management Inc.29,638$49K0.0%N/A0.045%
2/6/2024 Los Angeles Capital Management LLC275,834$455K0.0%+315.6%0.417%
2/5/2024 Kestra Private Wealth Services LLC30,500$50K0.0%N/A0.046%
1/12/2024 SG Americas Securities LLC48,470$80K0.0%+260.9%0.073%
11/13/2023FMR LLC8,432,773$31.96M0.0%-2.2%12.790%
10/27/2023 TD Asset Management Inc406,598$1.54M0.0%+72.1%0.617%
10/13/2023 SG Americas Securities LLC13,430$51K0.0%N/A0.020%
9/21/2023Barclays PLC17,395$95K0.0%-42.4%0.026%
8/11/2023 SVB Financial Group27,882$153K0.3%-31.0%0.042%
8/11/2023Sectoral Asset Management Inc.356,740$1.96M0.3%-7.4%0.541%
8/9/2023 TD Asset Management Inc236,255$1.30M0.0%+2.1%0.358%
8/3/2023Innovis Asset Management LLC10,022$55K0.0%-49.6%0.015%
7/24/2023 Vontobel Holding Ltd.356,740$1.96M0.0%-7.4%0.543%
5/15/2023EcoR1 Capital LLC1,956,579$8.41M0.3%N/A3.279%
5/12/2023Sectoral Asset Management Inc.385,070$1.66M0.3%+40.6%0.645%
5/9/2023 Y Intercept Hong Kong Ltd10,836$47K0.0%N/A0.018%
4/28/2023 SG Americas Securities LLC12,699$55K0.0%-25.5%0.021%
4/12/2023 Vontobel Holding Ltd.385,070$1.66M0.0%+40.6%0.645%
2/13/2023 GSA Capital Partners LLP86,154$339K0.0%+3.9%0.145%
2/10/2023 Connor Clark & Lunn Investment Management Ltd.10,003$39K0.0%N/A0.017%
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2/10/2023Sectoral Asset Management Inc.273,787$1.08M0.2%N/A0.461%
2/10/2023Cheyne Capital Management UK LLP51,126$201K0.4%N/A0.086%
2/9/2023 Denali Advisors LLC10,600$42K0.0%+43.2%0.018%
2/8/2023 Swiss National Bank106,800$420K0.0%+6.1%0.180%
2/2/2023 Nisa Investment Advisors LLC46,700$184K0.0%+29.0%0.079%
11/15/2022PFM Health Sciences LP3,013,712$16.00M0.6%+8.7%5.072%
11/15/2022Farallon Capital Management LLC2,500,000$13.28M0.1%-13.7%4.207%
11/15/2022BVF Inc. IL361,824$1.92M0.1%-76.7%0.609%
11/14/2022PDT Partners LLC40,607$216K0.0%-30.2%0.068%
11/10/2022UBS Group AG371,942$1.98M0.0%+3,591.0%0.626%
(Data available from 1/1/2016 forward)

GBIO Institutional Ownership - Frequently Asked Questions

Who are the largest shareholders of GBIO shares?

During the previous two years, 50 institutional investors and hedge funds held shares of Generation Bio. The most heavily invested institutionals were Bellevue Group AG ($15.72M), FMR LLC ($13.14M), Artal Group S.A. ($11.52M), Vanguard Group Inc. ($10.46M), Price T Rowe Associates Inc. MD ($9.84M), Baker BROS. Advisors LP ($4.80M), and PFM Health Sciences LP ($2.68M).Learn more on Generation Bio's institutional investors.

What percentage of Generation Bio's stock is owned by institutional investors?

95.22% of Generation Bio's stock is owned by institutional investors. Learn more on GBIO's institutional investor holdings.

Which institutional investors have been buying Generation Bio's stock?

Of the 39 institutional investors that purchased Generation Bio's stock in the last 24 months, the following investors and hedge funds have bought the highest volume of shares: Jefferies Financial Group Inc. ($4.52M), Price T Rowe Associates Inc. MD ($1.95M), Baker BROS. Advisors LP ($1.11M), Acadian Asset Management LLC ($778.05K), Renaissance Technologies LLC ($368.66K), Los Angeles Capital Management LLC ($315.29K), and Bellevue Group AG ($244.50K).

How much institutional buying is happening at Generation Bio?

Institutional investors have bought a total of 7,492,810 shares in the last 24 months. This purchase volume represents approximately $85.38M in transactions.

Which of Generation Bio's major shareholders have been selling company stock?

Of the 17 institutional investors that sold Generation Bio's stock in the last 24 months, the following investors and hedge funds have sold the highest volume of shares: Jefferies Financial Group Inc. ($2.09M), Geode Capital Management LLC ($610.34K), Goldman Sachs Group Inc. ($244.34K), Jacobs Levy Equity Management Inc. ($157.14K), D. E. Shaw & Co. Inc. ($143.23K), XTX Topco Ltd ($114.79K), and Los Angeles Capital Management LLC ($95.93K).

How much institutional selling is happening at Generation Bio?

Institutional investors have sold a total of 3,894,565 shares in the last 24 months. This volume of shares sold represents approximately $23.41M in transactions.



This page (NASDAQ:GBIO) was last updated on 8/14/2025 by MarketBeat.com Staff
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