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 2021
Institutional positions in Generation Bio Co. as of Jun 30, 2021. 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
- 98
- +10 vs. Q1 2021
- Shares held
- 46.5M
- +1.92M (+4.3%) vs. Q1 2021
- Total value
- $1.25B
- −$18.7M (−1.5%) vs. Q1 2021
- New holders
- 20
- 40 more added
- Sold out
- 10
- 22 more reduced
Compare with Q1 2021: 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 2021
Shares, value and share of portfolio for each institution holding Generation Bio Co.; share changes are against Q1 2021.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| FMR LLC | 8,495,022 | $228.5M | 0.02% | +30,913+0.4% | Added |
| Price T Rowe Associates Inc | 7,363,115 | $198.1M | 0.02% | +878,571+13.5% | Added |
| Farallon Capital Management, L.L.C. | 3,500,000 | $94.2M | 0.45% | +229,500+7.0% | Added |
| Vanguard Group Inc | 3,225,326 | $86.8M | 0.00% | +289,944+9.9% | Added |
| BlackRock Inc. | 2,850,140 | $76.7M | 0.00% | −63,315−2.2% | Reduced |
| Artal Group S.A. | 2,814,191 | $75.7M | 1.72% | 00.0% | Unchanged |
| Bellevue Group AG | 2,478,180 | $66.7M | 0.65% | +85,000+3.6% | Added |
| State Street Corp | 2,244,201 | $60.4M | 0.00% | +131,574+6.2% | Added |
| Casdin Capital, LLC | 1,611,214 | $43.3M | 1.10% | 00.0% | Unchanged |
| Carmignac Gestion | 1,473,524 | $39.6M | 0.46% | −62,212−4.1% | Reduced |
| JPMorgan Chase & Co | 1,466,092 | $39.4M | 0.01% | −46,673−3.1% | Reduced |
| Yiheng Capital Management, L.P. | 1,416,483 | $38.1M | 1.53% | +1,416,483 | New |
| Victory Capital Management Inc | 1,120,980 | $30.2M | 0.03% | +38,172+3.5% | Added |
| Ensign Peak Advisors, Inc | 727,796 | $19.6M | 0.04% | +11,220+1.6% | Added |
| Bank of New York Mellon Corp | 622,073 | $16.7M | 0.00% | +54,479+9.6% | Added |
| Geode Capital Management, LLC | 562,873 | $15.1M | 0.00% | +39,725+7.6% | Added |
| Harvard Management Co Inc | 512,349 | $13.8M | 0.79% | 00.0% | Unchanged |
| Northern Trust Corp | 405,430 | $10.9M | 0.00% | +17,958+4.6% | Added |
| Goldman Sachs Group Inc | 378,623 | $10.2M | 0.00% | −145,733−27.8% | Reduced |
| Morgan Stanley | 254,308 | $6.84M | 0.00% | +253,681+40,459.5% | Added |
| American Century Companies Inc | 246,377 | $6.63M | 0.00% | +103,883+72.9% | Added |
| AWM Investment Company, Inc. | 225,599 | $6.07M | 0.60% | 00.0% | Unchanged |
| Charles Schwab Investment Management Inc | 193,894 | $5.22M | 0.00% | +11,569+6.3% | Added |
| Nuveen Asset Management, LLC | 159,819 | $4.30M | 0.00% | +41,699+35.3% | Added |
| Citigroup Inc | 158,792 | $4.27M | 0.00% | +38,443+31.9% | Added |
| Deutsche Bank AG | 157,279 | $4.23M | 0.00% | +9,405+6.4% | Added |
| TD Asset Management Inc | 177,915 | $3.87M | 0.00% | +20,474+13.0% | Added |
| D. E. Shaw & Co., Inc. | 125,150 | $3.37M | 0.00% | −8,910−6.6% | Reduced |
| Laurion Capital Management LP | 118,598 | $3.19M | 0.05% | −6,402−5.1% | Reduced |
| Voloridge Investment Management, LLC | 114,284 | $3.07M | 0.02% | −13,622−10.7% | Reduced |
| Marshall Wace, LLP | 111,330 | $3.00M | 0.02% | +111,330 | New |
| Rafferty Asset Management, LLC | 87,424 | $2.35M | 0.01% | −8,451−8.8% | Reduced |
| Swiss National Bank | 79,800 | $2.15M | 0.00% | +9,800+14.0% | Added |
| Penn Mutual Asset Management, LLC | 73,065 | $1.97M | 2.46% | +5,000+7.3% | Added |
| California State Teachers Retirement System | 60,407 | $1.63M | 0.00% | −367−0.6% | Reduced |
| State of Wisconsin Investment Board | 54,300 | $1.46M | 0.00% | 00.0% | Unchanged |
| Marshall Wace North America L.P. | 50,545 | $1.36M | 0.01% | +50,545 | New |
| Alliancebernstein L.P. | 46,006 | $1.24M | 0.00% | 00.0% | Unchanged |
| Rhumbline Advisers | 43,135 | $1.16M | 0.00% | +940+2.2% | Added |
| New York State Common Retirement Fund | 39,227 | $1.05M | 0.00% | +17,027+76.7% | Added |
| Millennium Management LLC | 37,440 | $1.01M | 0.00% | +37,440 | New |
| Susquehanna International Group, LLP | 32,524 | $875.0K | 0.00% | −8,173−20.1% | Reduced |
| Los Angeles Capital Management LLC | 32,442 | $873.0K | 0.00% | −350−1.1% | Reduced |
| American International Group, Inc. | 24,552 | $660.0K | 0.00% | +1,069+4.6% | Added |
| Simplex Trading, LLC | 24,398 | $656.0K | 0.02% | −31,632−56.5% | Reduced |
| Manufacturers Life Insurance Company, The | 24,121 | $649.0K | 0.00% | +2,101+9.5% | Added |
| Squarepoint Ops LLC | 22,942 | $617.0K | 0.00% | +22,942 | New |
| Credit Suisse AG | 22,721 | $611.0K | 0.00% | +168+0.7% | Added |
| UBS Asset Management Americas Inc | 22,474 | $604.6K | 0.00% | +4,574+25.6% | Added |
| Ameriprise Financial Inc | 22,435 | $604.0K | 0.00% | +1,913+9.3% | Added |
| ProShare Advisors LLC | 21,542 | $579.0K | 0.00% | +3,230+17.6% | Added |
| Susquehanna Fundamental Investments, LLC | 19,500 | $525.0K | 0.01% | 00.0% | Unchanged |
| Citadel Advisors LLC | 19,197 | $516.0K | 0.00% | −17,286−47.4% | Reduced |
| Bank of America Corp | 18,408 | $496.0K | 0.00% | +103+0.6% | Added |
| Invesco Ltd. | 17,694 | $476.0K | 0.00% | +17,694 | New |
| Voya Investment Management LLC | 17,258 | $464.0K | 0.00% | −328−1.9% | Reduced |
| UBS Group AG | 17,217 | $463.0K | 0.00% | −9,968−36.7% | Reduced |
| DekaBank Deutsche Girozentrale | 17,100 | $454.0K | 0.00% | 00.0% | Unchanged |
| Sectoral Asset Management Inc | 16,522 | $444.0K | 0.04% | −5,000−23.2% | Reduced |
| Dana Investment Advisors, Inc. | 16,098 | $433.0K | 0.02% | +2,286+16.6% | Added |
| MetLife Investment Management | 15,606 | $419.8K | 0.00% | 00.0% | Unchanged |
| Parametric Portfolio Associates LLC | 12,764 | $343.0K | 0.00% | +2,392+23.1% | Added |
| PDT Partners, LLC | 12,644 | $340.0K | 0.02% | +12,644 | New |
| Principal Financial Group Inc | 12,585 | $339.0K | 0.00% | +4,939+64.6% | Added |
| Metropolitan Life Insurance Co | 11,983 | $322.3K | 0.00% | +578+5.1% | Added |
| Thrivent Financial for Lutherans | 11,021 | $296.0K | 0.00% | +11,021 | New |
| Darwin Global Management, Ltd. | 10,738 | $289.0K | 0.05% | −208,620−95.1% | Reduced |
| Dynamic Technology Lab Private Ltd | 10,080 | $271.0K | 0.03% | +10,080 | New |
| Arizona State Retirement System | 9,844 | $265.0K | 0.00% | +923+10.3% | Added |
| Handelsbanken Fonder AB | 9,500 | $256.0K | 0.00% | +9,500 | New |
| Legal & General Group Plc | 9,427 | $254.0K | 0.00% | +371+4.1% | Added |
| Trexquant Investment LP | 8,608 | $232.0K | 0.02% | +8,608 | New |
| Renaissance Technologies LLC | 8,400 | $226.0K | 0.00% | +8,400 | New |
| Amalgamated Bank | 8,143 | $219.0K | 0.00% | +8,143 | New |
| State Board of Administration of Florida Retirement System | 7,955 | $214.0K | 0.00% | +7,955 | New |
| Private Advisor Group, LLC | 7,661 | $206.0K | 0.00% | +15+0.2% | Added |
| Wetherby Asset Management Inc | 7,594 | $204.0K | 0.01% | +7,594 | New |
| Royal Bank of Canada | 4,376 | $118.0K | 0.00% | −1,866−29.9% | Reduced |
| Tortoise Investment Management, LLC | 3,325 | $89.0K | 0.02% | −1,750−34.5% | Reduced |
| Ameritas Investment Partners, Inc. | 3,277 | $88.0K | 0.00% | 00.0% | Unchanged |
| Tower Research Capital LLC (TRC) | 2,804 | $75.0K | 0.00% | +1,023+57.4% | Added |
| Great West Life Assurance Co | 1,866 | $50.0K | 0.00% | 00.0% | Unchanged |
| Penserra Capital Management LLC | 1,290 | $34.0K | 0.00% | +60+4.9% | Added |
| FORA Capital, LLC | 1,108 | $30.0K | 0.01% | +1,108 | New |
| Compagnie Lombard Odier SCmA | 1,050 | $28.0K | 0.00% | 00.0% | Unchanged |
| Nisa Investment Advisors, LLC | 800 | $22.0K | 0.00% | +800 | New |
| RPg Family Wealth Advisory, LLC | 758 | $20.4K | 0.01% | +758 | New |
| Advisor Group Holdings, Inc. | 666 | $18.0K | 0.00% | −110−14.2% | Reduced |
| Macquarie Group Ltd | 498 | $13.0K | 0.00% | −294−37.1% | Reduced |
| The PNC Financial Services Group, Inc. | 339 | $9.00K | 0.00% | +15+4.6% | Added |
| Huntington National Bank | 209 | $6.00K | 0.00% | 00.0% | Unchanged |
| Wells Fargo & Company | 186 | $5.00K | 0.00% | −3,162−94.4% | Reduced |
| Private Capital Group, LLC | 168 | $5.00K | 0.00% | 00.0% | Unchanged |
| Daiwa Securities Group Inc. | 108 | $3.00K | 0.00% | 00.0% | Unchanged |
| Farmers & Merchants Investments Inc | 87 | $2.00K | 0.00% | 00.0% | Unchanged |
| Signaturefd, LLC | 29 | $1.00K | 0.00% | +29 | New |
| First Horizon Advisors, Inc. | 30 | $0 | 0.00% | +13+76.5% | Added |
| First Horizon Corp | 8 | $0 | 0.00% | +8 | New |
| Deerfield Management Company, L.P. (Series C) | 0 | $0 | 0.00% | −897,779−100.0% | Sold out |
| Wellington Management Group LLP | 0 | $0 | 0.00% | −571,705−100.0% | Sold out |