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, Q4 2023
Institutional positions in Generation Bio Co. as of Dec 31, 2023. 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
- 76
- −1 vs. Q3 2023
- Shares held
- 52.6M
- −4.64M (−8.1%) vs. Q3 2023
- Total value
- $86.7M
- −$130.1M (−60.0%) vs. Q3 2023
- New holders
- 18
- 33 more added
- Sold out
- 19
- 15 more reduced
Compare with Q3 2023: 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, Q4 2023
Shares, value and share of portfolio for each institution holding Generation Bio Co.; share changes are against Q3 2023.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Huntington National Bank | 1 | $2 | 0.00% | 00.0% | Unchanged |
| First Horizon Advisors, Inc. | 2 | $3 | 0.00% | 00.0% | Unchanged |
| GAMMA Investing LLC | 79 | $149 | 0.00% | +79 | New |
| Federated Hermes, Inc. | 340 | $561 | 0.00% | +340 | New |
| Qube Research & Technologies Ltd | 386 | $637 | 0.00% | +386 | New |
| Lazard Asset Management LLC | 3,061 | $4.00K | 0.00% | −187−5.8% | Reduced |
| New York State Common Retirement Fund | 2,659 | $4.39K | 0.00% | −110−4.0% | Reduced |
| Ameritas Investment Partners, Inc. | 3,277 | $5.41K | 0.00% | 00.0% | Unchanged |
| Legal & General Group Plc | 3,919 | $6.45K | 0.00% | 00.0% | Unchanged |
| Amalgamated Bank | 3,949 | $7.00K | 0.00% | −454−10.3% | Reduced |
| Citigroup Inc | 6,471 | $10.7K | 0.00% | +5,630+669.4% | Added |
| California State Teachers Retirement System | 7,454 | $12.3K | 0.00% | −2,538−25.4% | Reduced |
| Tower Research Capital LLC (TRC) | 8,718 | $14.4K | 0.00% | +86+1.0% | Added |
| Simplex Trading, LLC | 12,816 | $21.0K | 0.00% | +12,361+2,716.7% | Added |
| State Board of Administration of Florida Retirement System | 13,030 | $21.5K | 0.00% | 00.0% | Unchanged |
| Cubist Systematic Strategies, LLC | 16,477 | $27.2K | 0.00% | +16,477 | New |
| Advisor Group Holdings, Inc. | 17,917 | $29.6K | 0.00% | +7,565+73.1% | Added |
| Envestnet Asset Management Inc | 17,917 | $29.6K | 0.00% | +17,917 | New |
| Wells Fargo & Company | 18,318 | $30.2K | 0.00% | +4,556+33.1% | Added |
| Voya Investment Management LLC | 18,902 | $31.2K | 0.00% | 00.0% | Unchanged |
| Royal Bank of Canada | 20,076 | $33.0K | 0.00% | +3,936+24.4% | Added |
| American International Group, Inc. | 22,508 | $37.1K | 0.00% | −92−0.4% | Reduced |
| Prudential Financial Inc | 28,375 | $46.8K | 0.00% | +28,375 | New |
| Connor, Clark & Lunn Investment Management Ltd. | 28,517 | $47.1K | 0.00% | +28,517 | New |
| Point72 Middle East FZE | 29,338 | $48.4K | 0.00% | +29,338 | New |
| Panagora Asset Management Inc | 29,638 | $48.9K | 0.00% | +29,638 | New |
| Kestra Private Wealth Services, LLC | 30,500 | $50.3K | 0.00% | +30,500 | New |
| State of Wisconsin Investment Board | 36,900 | $60.9K | 0.00% | −74,400−66.8% | Reduced |
| Cornercap Investment Counsel Inc | 38,458 | $63.5K | 0.01% | +777+2.1% | Added |
| Engineers Gate Manager LP | 40,121 | $66.2K | 0.00% | +40,121 | New |
| Susquehanna International Group, LLP | 40,748 | $67.2K | 0.00% | +40,748 | New |
| SG Americas Securities, LLC | 48,470 | $80.0K | 0.00% | +35,040+260.9% | Added |
| Alliancebernstein L.P. | 65,285 | $107.7K | 0.00% | −5,541−7.8% | Reduced |
| Barclays PLC | 67,861 | $112.0K | 0.00% | +54,267+399.2% | Added |
| Rhumbline Advisers | 71,869 | $118.6K | 0.00% | +492+0.7% | Added |
| Invesco Ltd. | 78,145 | $128.9K | 0.00% | +3,738+5.0% | Added |
| Weiss Asset Management LP | 81,630 | $134.7K | 0.01% | +81,630 | New |
| Jacobs Levy Equity Management, Inc | 88,535 | $146.1K | 0.00% | +88,535 | New |
| Jane Street Group, LLC | 107,028 | $176.6K | 0.00% | +92,903+657.7% | Added |
| Squarepoint Ops LLC | 110,232 | $181.9K | 0.00% | +55,724+102.2% | Added |
| Marshall Wace, LLP | 123,587 | $203.9K | 0.00% | +89,114+258.5% | Added |
| Citadel Advisors LLC | 126,180 | $208.2K | 0.00% | +115,852+1,121.7% | Added |
| Gsa Capital Partners LLP | 130,070 | $215.0K | 0.02% | +87,751+207.4% | Added |
| Manufacturers Life Insurance Company, The | 144,319 | $238.1K | 0.00% | −7,946−5.2% | Reduced |
| XTX Topco Ltd | 146,403 | $241.6K | 0.05% | +146,403 | New |
| Bank of New York Mellon Corp | 159,537 | $263.2K | 0.00% | +10.0% | Added |
| Two Sigma Advisers, LP | 212,400 | $350.5K | 0.00% | +194,700+1,100.0% | Added |
| Acadian Asset Management LLC | 224,367 | $368.0K | 0.00% | +224,367 | New |
| Nuveen Asset Management, LLC | 228,945 | $377.8K | 0.00% | +2,573+1.1% | Added |
| Bridgeway Capital Management, LLC | 243,000 | $400.9K | 0.01% | +243,000 | New |
| Los Angeles Capital Management LLC | 275,834 | $455.1K | 0.00% | +209,462+315.6% | Added |
| D. E. Shaw & Co., Inc. | 283,108 | $467.1K | 0.00% | +258,122+1,033.1% | Added |
| JPMorgan Chase & Co | 285,886 | $471.7K | 0.00% | −1,124,560−79.7% | Reduced |
| Two Sigma Investments, LP | 317,077 | $523.2K | 0.00% | +317,077 | New |
| TD Asset Management Inc | 340,686 | $562.1K | 0.00% | −65,912−16.2% | Reduced |
| Northern Trust Corp | 373,085 | $615.6K | 0.00% | +2,223+0.6% | Added |
| Charles Schwab Investment Management Inc | 381,480 | $629.4K | 0.00% | +4,867+1.3% | Added |
| Dimensional Fund Advisors LP | 683,100 | $1.13M | 0.00% | −78,319−10.3% | Reduced |
| Renaissance Technologies LLC | 689,400 | $1.14M | 0.00% | +374,600+119.0% | Added |
| Millennium Management LLC | 752,745 | $1.24M | 0.00% | +722,074+2,354.3% | Added |
| UBS Group AG | 867,399 | $1.43M | 0.00% | +469,793+118.2% | Added |
| State Street Corp | 921,987 | $1.52M | 0.00% | +8,237+0.9% | Added |
| Morgan Stanley | 1,064,064 | $1.76M | 0.00% | +561,094+111.6% | Added |
| Geode Capital Management, LLC | 1,077,963 | $1.78M | 0.00% | +66,193+6.5% | Added |
| Goldman Sachs Group Inc | 1,159,506 | $1.91M | 0.00% | +469,037+67.9% | Added |
| Deutsche Bank AG | 1,232,316 | $2.03M | 0.00% | +1,213,116+6,318.3% | Added |
| PFM Health Sciences, LP | 1,622,487 | $2.68M | 0.16% | −891,956−35.5% | Reduced |
| EcoR1 Capital, LLC | 2,046,867 | $3.38M | 0.09% | 00.0% | Unchanged |
| Bank of America Corp | 2,527,862 | $4.17M | 0.00% | +2,020,340+398.1% | Added |
| Vanguard Group Inc | 2,552,251 | $4.21M | 0.00% | +213,467+9.1% | Added |
| Artal Group S.A. | 2,814,191 | $4.64M | 0.16% | 00.0% | Unchanged |
| BlackRock Inc. | 3,168,415 | $5.23M | 0.00% | −185,321−5.5% | Reduced |
| Bellevue Group AG | 3,617,080 | $5.97M | 0.09% | 00.0% | Unchanged |
| FMR LLC | 5,352,399 | $8.83M | 0.00% | −3,080,374−36.5% | Reduced |
| Price T Rowe Associates Inc | 6,926,174 | $11.4M | 0.00% | −528,529−7.1% | Reduced |
| Atlas Venture Life Science Advisors, LLC | 8,279,484 | $13.7M | 1.63% | 00.0% | Unchanged |
| T. Rowe Price Investment Management, Inc. | 0 | $0 | 0.00% | −3,511,456−100.0% | Sold out |
| Yiheng Capital Management, L.P. | 0 | $0 | 0.00% | −1,666,181−100.0% | Sold out |
| Great Point Partners LLC | 0 | $0 | 0.00% | −1,022,537−100.0% | Sold out |
| Sectoral Asset Management Inc | 0 | $0 | 0.00% | −356,740−100.0% | Sold out |
| Vontobel Holding Ltd. | 0 | $0 | 0.00% | −356,740−100.0% | Sold out |
| Wellington Management Group LLP | 0 | $0 | 0.00% | −176,165−100.0% | Sold out |
| Martingale Asset Management L P | 0 | $0 | 0.00% | −74,304−100.0% | Sold out |
| American Century Companies Inc | 0 | $0 | 0.00% | −30,889−100.0% | Sold out |
| SVB Financial Group | 0 | $0 | 0.00% | −25,034−100.0% | Sold out |
| MetLife Investment Management | 0 | $0 | 0.00% | −24,031−100.0% | Sold out |
| Mirae Asset Global Investments Co., Ltd. | 0 | $0 | 0.00% | −19,808−100.0% | Sold out |
| PDT Partners, LLC | 0 | $0 | 0.00% | −19,779−100.0% | Sold out |
| Denali Advisors LLC | 0 | $0 | 0.00% | −10,600−100.0% | Sold out |
| ProShare Advisors LLC | 0 | $0 | 0.00% | −10,192−100.0% | Sold out |
| Manchester Capital Management LLC | 0 | $0 | 0.00% | −3,000−100.0% | Sold out |
| Metropolitan Life Insurance Co | 0 | $0 | 0.00% | −2,660−100.0% | Sold out |
| China Universal Asset Management Co., Ltd. | 0 | $0 | 0.00% | −1,695−100.0% | Sold out |
| Nisa Investment Advisors, LLC | 0 | $0 | 0.00% | −840−100.0% | Sold out |
| Daiwa Securities Group Inc. | 0 | $0 | 0.00% | −194−100.0% | Sold out |