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, Q3 2022
Institutional positions in Generation Bio Co. as of Sep 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
- 115
- +20 vs. Q2 2022
- Shares held
- 57.7M
- +2.34M (+4.2%) vs. Q2 2022
- Total value
- $306.3M
- −$57.2M (−15.7%) vs. Q2 2022
- New holders
- 27
- 43 more added
- Sold out
- 7
- 25 more reduced
Compare with Q2 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, Q3 2022
Shares, value and share of portfolio for each institution holding Generation Bio Co.; share changes are against Q2 2022.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| FMR LLC | 8,851,683 | $47.0M | 0.00% | +288,742+3.4% | Added |
| Atlas Venture Life Science Advisors, LLC | 8,278,876 | $44.0M | 4.85% | 00.0% | Unchanged |
| Price T Rowe Associates Inc | 7,395,573 | $39.3M | 0.01% | −1,536,040−17.2% | Reduced |
| Bellevue Group AG | 3,627,280 | $19.3M | 0.28% | 00.0% | Unchanged |
| BlackRock Inc. | 3,616,045 | $19.2M | 0.00% | +114,082+3.3% | Added |
| T. Rowe Price Investment Management, Inc. | 3,482,617 | $18.5M | 0.01% | +3,482,617 | New |
| PFM Health Sciences, LP | 3,013,712 | $16.0M | 0.61% | +240,399+8.7% | Added |
| Artal Group S.A. | 2,814,191 | $14.9M | 0.78% | 00.0% | Unchanged |
| Farallon Capital Management, L.L.C. | 2,500,000 | $13.3M | 0.08% | −397,300−13.7% | Reduced |
| Vanguard Group Inc | 2,218,522 | $11.8M | 0.00% | +8,213+0.4% | Added |
| Yiheng Capital Management, L.P. | 997,857 | $5.30M | 0.50% | −1,599,774−61.6% | Reduced |
| State Street Corp | 918,491 | $4.88M | 0.00% | +3,563+0.4% | Added |
| Geode Capital Management, LLC | 854,929 | $4.54M | 0.00% | +34,429+4.2% | Added |
| Great Point Partners LLC | 825,077 | $4.38M | 1.05% | +825,077 | New |
| Goldman Sachs Group Inc | 815,576 | $4.33M | 0.00% | +601,954+281.8% | Added |
| Bank of America Corp | 606,458 | $3.22M | 0.00% | +585,673+2,817.8% | Added |
| Harvard Management Co Inc | 510,354 | $2.71M | 0.34% | 00.0% | Unchanged |
| Morgan Stanley | 486,884 | $2.58M | 0.00% | +283,067+138.9% | Added |
| JPMorgan Chase & Co | 458,075 | $2.43M | 0.00% | −186,181−28.9% | Reduced |
| Northern Trust Corp | 413,698 | $2.20M | 0.00% | +1,113+0.3% | Added |
| UBS Group AG | 371,942 | $1.98M | 0.00% | +361,865+3,591.0% | Added |
| BVF Inc | 361,824 | $1.92M | 0.08% | −1,194,208−76.7% | Reduced |
| Nuveen Asset Management, LLC | 358,648 | $1.91M | 0.00% | +45,771+14.6% | Added |
| Charles Schwab Investment Management Inc | 340,598 | $1.81M | 0.00% | +22,032+6.9% | Added |
| Dimensional Fund Advisors LP | 332,973 | $1.77M | 0.00% | +204,832+159.8% | Added |
| Renaissance Technologies LLC | 290,200 | $1.54M | 0.00% | +3,071+1.1% | Added |
| HighVista Strategies LLC | 248,994 | $1.32M | 0.76% | 00.0% | Unchanged |
| TD Asset Management Inc | 231,461 | $1.18M | 0.00% | +21,500+10.2% | Added |
| D. E. Shaw & Co., Inc. | 217,417 | $1.15M | 0.00% | +35,413+19.5% | Added |
| Bank of New York Mellon Corp | 165,415 | $878.0K | 0.00% | +19,474+13.3% | Added |
| Manufacturers Life Insurance Company, The | 152,011 | $778.0K | 0.00% | −563−0.4% | Reduced |
| Jacobs Levy Equity Management, Inc | 146,267 | $777.0K | 0.01% | +109,927+302.5% | Added |
| Deutsche Bank AG | 139,955 | $743.0K | 0.00% | −8,241−5.6% | Reduced |
| State of Wisconsin Investment Board | 129,673 | $689.0K | 0.00% | −15,187−10.5% | Reduced |
| Swiss National Bank | 100,700 | $535.0K | 0.00% | 00.0% | Unchanged |
| Gsa Capital Partners LLP | 82,946 | $440.0K | 0.06% | +64,489+349.4% | Added |
| Martingale Asset Management L P | 74,304 | $395.0K | 0.01% | −60.0% | Reduced |
| Rhumbline Advisers | 70,662 | $375.0K | 0.00% | +5,885+9.1% | Added |
| Los Angeles Capital Management LLC | 65,332 | $347.0K | 0.00% | 00.0% | Unchanged |
| California State Teachers Retirement System | 55,824 | $296.0K | 0.00% | −584−1.0% | Reduced |
| Alliancebernstein L.P. | 53,006 | $281.0K | 0.00% | +2,900+5.8% | Added |
| HRT Financial LP | 49,644 | $263.0K | 0.00% | −105,639−68.0% | Reduced |
| PDT Partners, LLC | 40,607 | $216.0K | 0.03% | −17,557−30.2% | Reduced |
| Man Group plc | 40,675 | $216.0K | 0.00% | – | – |
| Two Sigma Advisers, LP | 37,200 | $198.0K | 0.00% | +16,400+78.8% | Added |
| Nisa Investment Advisors, LLC | 36,200 | $191.0K | 0.00% | −2,000−5.2% | Reduced |
| Marshall Wace, LLP | 33,822 | $180.0K | 0.00% | −651−1.9% | Reduced |
| Trexquant Investment LP | 32,905 | $175.0K | 0.01% | +32,905 | New |
| AQR Capital Management LLC | 32,624 | $173.0K | 0.00% | +32,624 | New |
| Two Sigma Investments, LP | 31,567 | $168.0K | 0.00% | +19,567+163.1% | Added |
| Credit Suisse AG | 30,833 | $164.0K | 0.00% | +227+0.7% | Added |
| Cornercap Investment Counsel Inc | 28,345 | $151.0K | 0.03% | +3,481+14.0% | Added |
| Tudor Investment Corp Et Al | 28,234 | $150.0K | 0.00% | +445+1.6% | Added |
| Algert Global LLC | 27,746 | $147.0K | 0.01% | +27,746 | New |
| MetLife Investment Management | 26,317 | $139.7K | 0.00% | 00.0% | Unchanged |
| New York State Common Retirement Fund | 26,033 | $138.0K | 0.00% | +116+0.4% | Added |
| Massachusetts Financial Services Co | 25,678 | $136.0K | 0.00% | +25,678 | New |
| UBS Asset Management Americas Inc | 24,668 | $131.0K | 0.00% | 00.0% | Unchanged |
| Russell Investments Group, Ltd. | 23,196 | $122.0K | 0.00% | +23,196 | New |
| Susquehanna International Group, LLP | 22,761 | $121.0K | 0.00% | −48,174−67.9% | Reduced |
| American International Group, Inc. | 22,830 | $121.0K | 0.00% | +1,055+4.8% | Added |
| Occudo Quantitative Strategies LP | 22,772 | $121.0K | 0.01% | +22,772 | New |
| Cubist Systematic Strategies, LLC | 22,246 | $118.0K | 0.00% | +1,219+5.8% | Added |
| Citadel Advisors LLC | 21,482 | $114.0K | 0.00% | −33,157−60.7% | Reduced |
| Voya Investment Management LLC | 20,075 | $106.6K | 0.00% | +2,448+13.9% | Added |
| Mirae Asset Global Investments Co., Ltd. | 19,732 | $105.0K | 0.00% | +5,967+43.3% | Added |
| Victory Capital Management Inc | 19,210 | $102.0K | 0.00% | +1,495+8.4% | Added |
| Legal & General Group Plc | 18,969 | $100.0K | 0.00% | +1,805+10.5% | Added |
| Walleye Capital LLC | 18,795 | $100.0K | 0.00% | +18,795 | New |
| Acadian Asset Management LLC | 18,305 | $97.0K | 0.00% | +11,715+177.8% | Added |
| Schonfeld Strategic Advisors LLC | 17,100 | $91.0K | 0.00% | +17,100 | New |
| Invesco Ltd. | 16,696 | $89.0K | 0.00% | +75+0.5% | Added |
| SG Americas Securities, LLC | 15,764 | $84.0K | 0.00% | −2,268−12.6% | Reduced |
| Teacher Retirement System of Texas | 14,078 | $75.0K | 0.00% | +14,078 | New |
| Ameriprise Financial Inc | 13,690 | $72.0K | 0.00% | +13,690 | New |
| Public Employees Retirement System of Ohio | 13,500 | $72.0K | 0.00% | +13,500 | New |
| Virginia Retirement Systems Et Al | 12,400 | $65.8K | 0.00% | +12,400 | New |
| Arizona State Retirement System | 11,635 | $62.0K | 0.00% | +49+0.4% | Added |
| Principal Financial Group Inc | 11,448 | $61.0K | 0.00% | +11,448 | New |
| Millennium Management LLC | 10,347 | $55.0K | 0.00% | −60,213−85.3% | Reduced |
| ProShare Advisors LLC | 10,251 | $54.0K | 0.00% | +10,251 | New |
| Ensign Peak Advisors, Inc | 7,790 | $41.0K | 0.00% | 00.0% | Unchanged |
| Cannell Capital LLC | 7,768 | $41.0K | 0.01% | +6,023+345.2% | Added |
| Denali Advisors LLC | 7,400 | $39.0K | 0.02% | +7,400 | New |
| Royal Bank of Canada | 6,936 | $37.0K | 0.00% | +323+4.9% | Added |
| Tower Research Capital LLC (TRC) | 6,178 | $33.0K | 0.00% | −4,557−42.4% | Reduced |
| Amalgamated Bank | 5,964 | $32.0K | 0.00% | +187+3.2% | Added |
| Dark Forest Capital Management LP | 5,067 | $27.0K | 0.00% | +5,067 | New |
| Quantbot Technologies LP | 4,092 | $21.0K | 0.00% | −500−10.9% | Reduced |
| Ameritas Investment Partners, Inc. | 3,277 | $17.0K | 0.00% | 00.0% | Unchanged |
| Advisor Group Holdings, Inc. | 3,167 | $17.0K | 0.00% | +3,167 | New |
| Manchester Capital Management LLC | 3,000 | $16.0K | 0.00% | 00.0% | Unchanged |
| Great West Life Assurance Co | 2,707 | $14.0K | 0.00% | +211+8.5% | Added |
| US Bancorp | 2,652 | $14.0K | 0.00% | +2,376+860.9% | Added |
| Citigroup Inc | 2,502 | $13.0K | 0.00% | −2,583−50.8% | Reduced |
| Wells Fargo & Company | 2,218 | $12.0K | 0.00% | −456−17.1% | Reduced |
| Barclays PLC | 2,040 | $11.0K | 0.00% | −494−19.5% | Reduced |
| Compagnie Lombard Odier SCmA | 1,050 | $6.00K | 0.00% | 00.0% | Unchanged |
| Metropolitan Life Insurance Co | 937 | $4.97K | 0.00% | −2,109−69.2% | Reduced |
| Ellevest, Inc. | 796 | $4.00K | 0.00% | +796 | New |