Generation Bio Co.
GBIODelisted Feb 9, 2026- Industry
- Pharmaceutical Preparations
- SEC CIK
- 0001733294
Generation Bio Co. was delisted on Feb 9, 2026; its insiders filed their last Form 4 on Feb 9, 2026; 48 institutions reported holding it in 13F filings for Q4 2025, worth $24.5M in total; no superinvestor held it.
13F holders, Q2 2022
Institutional positions in Generation Bio Co. as of Jun 30, 2022. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 95
- +9 vs. Q1 2022
- Shares held
- 55.4M
- −1.10M (−1.9%) vs. Q1 2022
- Total value
- $363.5M
- −$52.0M (−12.5%) vs. Q1 2022
- New holders
- 19
- 35 more added
- Sold out
- 10
- 25 more reduced
3 institutions that held it in Q1 2022 haven't filed for Q2 2022 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 2022: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting GBIO on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 1 | $0 |
| Q1 2026 | 2 | $53.3K |
| Q4 2025 | 48 | $24.5M |
| Q3 2025 | 41 | $24.2M |
| Q2 2025 | 63 | $13.3M |
| Q1 2025 | 81 | $19.3M |
| Q4 2024 | 80 | $57.1M |
| Q3 2024 | 77 | $136.4M |
| Q2 2024 | 79 | $156.5M |
| Q1 2024 | 77 | $223.7M |
| Q4 2023 | 76 | $86.7M |
| Q3 2023 | 77 | $216.8M |
| Q2 2023 | 81 | $315.1M |
| Q1 2023 | 86 | $246.8M |
| Q4 2022 | 98 | $224.5M |
| Q3 2022 | 115 | $306.3M |
| Q2 2022 | 95 | $363.5M |
| Q1 2022 | 89 | $415.8M |
| Q4 2021 | 89 | $390.3M |
| Q3 2021 | 82 | $1.20B |
| Q2 2021 | 98 | $1.25B |
| Q1 2021 | 88 | $1.27B |
Institutions, Q2 2022
Shares, value and share of portfolio for each institution holding Generation Bio Co.; share changes are against Q1 2022.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Price T Rowe Associates Inc | 8,931,613 | $58.6M | 0.01% | +167,922+1.9% | Added |
| FMR LLC | 8,562,941 | $56.2M | 0.01% | +12,174+0.1% | Added |
| Atlas Venture Life Science Advisors, LLC | 8,278,876 | $54.3M | 9.08% | 00.0% | Unchanged |
| Bellevue Group AG | 3,627,280 | $23.8M | 0.34% | −54,900−1.5% | Reduced |
| BlackRock Inc. | 3,501,963 | $23.0M | 0.00% | +333,150+10.5% | Added |
| Farallon Capital Management, L.L.C. | 2,897,300 | $19.0M | 0.11% | −602,700−17.2% | Reduced |
| Artal Group S.A. | 2,814,191 | $18.5M | 1.03% | 00.0% | Unchanged |
| PFM Health Sciences, LP | 2,773,313 | $18.2M | 0.71% | +2,199,035+382.9% | Added |
| Yiheng Capital Management, L.P. | 2,597,631 | $17.0M | 1.22% | 00.0% | Unchanged |
| Vanguard Group Inc | 2,210,309 | $14.5M | 0.00% | −1,338,868−37.7% | Reduced |
| BVF Inc | 1,556,032 | $10.3M | 0.50% | −1,246,918−44.5% | Reduced |
| State Street Corp | 914,928 | $6.00M | 0.00% | +55,992+6.5% | Added |
| Geode Capital Management, LLC | 820,500 | $5.38M | 0.00% | +27,463+3.5% | Added |
| JPMorgan Chase & Co | 644,256 | $4.23M | 0.00% | −16,019−2.4% | Reduced |
| Harvard Management Co Inc | 510,354 | $3.35M | 0.39% | 00.0% | Unchanged |
| Northern Trust Corp | 412,585 | $2.71M | 0.00% | +8,409+2.1% | Added |
| Charles Schwab Investment Management Inc | 318,566 | $2.09M | 0.00% | +26,854+9.2% | Added |
| Nuveen Asset Management, LLC | 312,877 | $2.05M | 0.00% | +139,849+80.8% | Added |
| Renaissance Technologies LLC | 287,129 | $1.88M | 0.00% | +214,629+296.0% | Added |
| HighVista Strategies LLC | 248,994 | $1.63M | 0.99% | +117,699+89.6% | Added |
| Goldman Sachs Group Inc | 213,622 | $1.40M | 0.00% | +8,454+4.1% | Added |
| TD Asset Management Inc | 209,961 | $1.38M | 0.00% | 00.0% | Unchanged |
| Morgan Stanley | 203,817 | $1.34M | 0.00% | −9,532−4.5% | Reduced |
| D. E. Shaw & Co., Inc. | 182,004 | $1.19M | 0.00% | −44,597−19.7% | Reduced |
| HRT Financial LP | 155,283 | $1.02M | 0.01% | +96,835+165.7% | Added |
| Manufacturers Life Insurance Company, The | 152,574 | $1.01M | 0.00% | +450.0% | Added |
| Deutsche Bank AG | 148,196 | $973.0K | 0.00% | −4,380−2.9% | Reduced |
| Bank of New York Mellon Corp | 145,941 | $957.0K | 0.00% | +2,536+1.8% | Added |
| State of Wisconsin Investment Board | 144,860 | $950.0K | 0.00% | −7,940−5.2% | Reduced |
| Dimensional Fund Advisors LP | 128,141 | $842.0K | 0.00% | +3,405+2.7% | Added |
| Swiss National Bank | 100,700 | $661.0K | 0.00% | +13,300+15.2% | Added |
| Qube Research & Technologies Ltd | 76,914 | $505.0K | 0.00% | +76,914 | New |
| Martingale Asset Management L P | 74,310 | $488.0K | 0.01% | −4,026−5.1% | Reduced |
| Susquehanna International Group, LLP | 70,935 | $465.0K | 0.00% | +40,378+132.1% | Added |
| Millennium Management LLC | 70,560 | $463.0K | 0.00% | +70,560 | New |
| Los Angeles Capital Management LLC | 65,332 | $429.0K | 0.00% | −3,060−4.5% | Reduced |
| Rhumbline Advisers | 64,777 | $425.0K | 0.00% | +20,621+46.7% | Added |
| PDT Partners, LLC | 58,164 | $382.0K | 0.03% | −37,451−39.2% | Reduced |
| California State Teachers Retirement System | 56,408 | $370.0K | 0.00% | +6,054+12.0% | Added |
| Citadel Advisors LLC | 54,639 | $359.0K | 0.00% | +6,151+12.7% | Added |
| Alliancebernstein L.P. | 50,106 | $329.0K | 0.00% | +4,000+8.7% | Added |
| Jane Street Group, LLC | 47,628 | $312.0K | 0.00% | +22,913+92.7% | Added |
| Ergoteles LLC | 44,549 | $292.0K | 0.01% | +44,549 | New |
| Nisa Investment Advisors, LLC | 38,200 | $251.0K | 0.00% | +3,500+10.1% | Added |
| Man Group plc | – | $247.0K | 0.00% | – | New |
| Jacobs Levy Equity Management, Inc | 36,340 | $238.0K | 0.00% | +36,340 | New |
| Marshall Wace, LLP | 34,473 | $226.0K | 0.00% | 00.0% | Unchanged |
| Credit Suisse AG | 30,606 | $201.0K | 0.00% | +4,134+15.6% | Added |
| Tudor Investment Corp Et Al | 27,789 | $182.0K | 0.01% | −392−1.4% | Reduced |
| MetLife Investment Management | 26,317 | $172.6K | 0.00% | +6,529+33.0% | Added |
| New York State Common Retirement Fund | 25,917 | $170.0K | 0.00% | +8,649+50.1% | Added |
| Cornercap Investment Counsel Inc | 24,864 | $163.0K | 0.03% | +24,864 | New |
| UBS Asset Management Americas Inc | 24,668 | $161.8K | 0.00% | 00.0% | Unchanged |
| American International Group, Inc. | 21,775 | $143.0K | 0.00% | +21+0.1% | Added |
| Cubist Systematic Strategies, LLC | 21,027 | $138.0K | 0.00% | +21,027 | New |
| Two Sigma Advisers, LP | 20,800 | $136.0K | 0.00% | −48,200−69.9% | Reduced |
| Bank of America Corp | 20,785 | $136.0K | 0.00% | −1,160−5.3% | Reduced |
| DekaBank Deutsche Girozentrale | 19,400 | $128.0K | 0.00% | 00.0% | Unchanged |
| Gsa Capital Partners LLP | 18,457 | $121.0K | 0.02% | +18,457 | New |
| SG Americas Securities, LLC | 18,032 | $118.0K | 0.00% | +18,032 | New |
| Voya Investment Management LLC | 17,627 | $116.0K | 0.00% | +1,917+12.2% | Added |
| Victory Capital Management Inc | 17,715 | $116.0K | 0.00% | −21−0.1% | Reduced |
| Legal & General Group Plc | 17,164 | $113.0K | 0.00% | +475+2.8% | Added |
| Delphia (USA) Inc. | 16,850 | $111.0K | 0.08% | +16,850 | New |
| Invesco Ltd. | 16,621 | $110.0K | 0.00% | −2,555−13.3% | Reduced |
| Corton Capital Inc. | 15,493 | $102.0K | 0.10% | +15,493 | New |
| Mirae Asset Global Investments Co., Ltd. | 13,765 | $91.0K | 0.00% | +13,765 | New |
| Two Sigma Investments, LP | 12,000 | $79.0K | 0.00% | −102,924−89.6% | Reduced |
| Arizona State Retirement System | 11,586 | $76.0K | 0.00% | +11,586 | New |
| Tower Research Capital LLC (TRC) | 10,735 | $70.0K | 0.00% | +9,609+853.4% | Added |
| UBS Group AG | 10,077 | $66.0K | 0.00% | +3,900+63.1% | Added |
| Ensign Peak Advisors, Inc | 7,790 | $51.0K | 0.00% | 00.0% | Unchanged |
| Royal Bank of Canada | 6,613 | $43.0K | 0.00% | −2,430−26.9% | Reduced |
| Acadian Asset Management LLC | 6,590 | $43.0K | 0.00% | +6,590 | New |
| Amalgamated Bank | 5,777 | $38.0K | 0.00% | −1,263−17.9% | Reduced |
| Citigroup Inc | 5,085 | $33.0K | 0.00% | −14,836−74.5% | Reduced |
| Quantbot Technologies LP | 4,592 | $30.0K | 0.00% | −3,408−42.6% | Reduced |
| Ameritas Investment Partners, Inc. | 3,277 | $21.0K | 0.00% | 00.0% | Unchanged |
| Manchester Capital Management LLC | 3,000 | $20.0K | 0.00% | +2,000+200.0% | Added |
| Metropolitan Life Insurance Co | 3,046 | $20.0K | 0.00% | 00.0% | Unchanged |
| Wells Fargo & Company | 2,674 | $18.0K | 0.00% | −3,432−56.2% | Reduced |
| Barclays PLC | 2,534 | $17.0K | 0.00% | −4,751−65.2% | Reduced |
| Great West Life Assurance Co | 2,496 | $16.0K | 0.00% | +210+9.2% | Added |
| Cannell Capital LLC | 1,745 | $11.0K | 0.00% | +1,745 | New |
| Compagnie Lombard Odier SCmA | 1,050 | $7.00K | 0.00% | 00.0% | Unchanged |
| Macquarie Group Ltd | 498 | $3.00K | 0.00% | 00.0% | Unchanged |
| US Bancorp | 276 | $2.00K | 0.00% | 00.0% | Unchanged |
| Signaturefd, LLC | 361 | $2.00K | 0.00% | +275+319.8% | Added |
| Lindbrook Capital, LLC | 283 | $2.00K | 0.00% | +283 | New |
| Daiwa Securities Group Inc. | 194 | $1.00K | 0.00% | 00.0% | Unchanged |
| Clearstead Advisors, LLC | 100 | $1.00K | 0.00% | +100 | New |
| TCI Wealth Advisors, Inc. | 100 | $1.00K | 0.00% | +100 | New |
| Huntington National Bank | 1 | $0 | 0.00% | 00.0% | Unchanged |
| First Horizon Advisors, Inc. | 2 | $0 | 0.00% | −14−87.5% | Reduced |
| Group One Trading, L.P. | 1 | $0 | 0.00% | +1 | New |
| Casdin Capital, LLC | 0 | $0 | 0.00% | −1,324,275−100.0% | Sold out |
| Occudo Quantitative Strategies LP | 0 | $0 | 0.00% | −38,120−100.0% | Sold out |
| Squarepoint Ops LLC | 0 | $0 | 0.00% | −37,758−100.0% | Sold out |
| Schonfeld Strategic Advisors LLC | 0 | $0 | 0.00% | −30,400−100.0% | Sold out |
| Thrivent Financial for Lutherans | 0 | $0 | 0.00% | −19,836−100.0% | Sold out |