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 2021
Institutional positions in Generation Bio Co. as of Dec 31, 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
- 89
- +8 vs. Q3 2021
- Shares held
- 55.0M
- +7.46M (+15.7%) vs. Q3 2021
- Total value
- $390.3M
- −$801.5M (−67.3%) vs. Q3 2021
- New holders
- 22
- 29 more added
- Sold out
- 14
- 23 more reduced
1 institution that held it in Q3 2021 haven't filed for Q4 2021 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 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, Q4 2021
Shares, value and share of portfolio for each institution holding Generation Bio Co.; share changes are against Q3 2021.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| First Horizon Advisors, Inc. | 64 | $0 | 0.00% | 00.0% | Unchanged |
| Huntington National Bank | 1 | $0 | 0.00% | 00.0% | Unchanged |
| Covestor Ltd | 19 | $0 | 0.00% | +19 | New |
| Daiwa Securities Group Inc. | 194 | $1.00K | 0.00% | 00.0% | Unchanged |
| Quantbot Technologies LP | 300 | $2.00K | 0.00% | −200−40.0% | Reduced |
| Parallel Advisors, LLC | 387 | $3.00K | 0.00% | +387 | New |
| Macquarie Group Ltd | 498 | $4.00K | 0.00% | 00.0% | Unchanged |
| Nisa Investment Advisors, LLC | 800 | $5.00K | 0.00% | −3,000−78.9% | Reduced |
| Point72 Hong Kong Ltd | 656 | $5.00K | 0.00% | +556+556.0% | Added |
| Compagnie Lombard Odier SCmA | 1,050 | $7.00K | 0.00% | 00.0% | Unchanged |
| Manchester Capital Management LLC | 1,000 | $7.00K | 0.00% | 00.0% | Unchanged |
| Signaturefd, LLC | 1,426 | $10.0K | 0.00% | +1,401+5,604.0% | Added |
| Great West Life Assurance Co | 2,076 | $14.0K | 0.00% | +210+11.3% | Added |
| Ameritas Investment Partners, Inc. | 3,277 | $23.0K | 0.00% | 00.0% | Unchanged |
| MetLife Investment Management | 3,431 | $24.3K | 0.00% | −12,175−78.0% | Reduced |
| Simplex Trading, LLC | 4,674 | $33.0K | 0.00% | −18,356−79.7% | Reduced |
| Tower Research Capital LLC (TRC) | 5,358 | $38.0K | 0.00% | +851+18.9% | Added |
| Ensign Peak Advisors, Inc | 7,790 | $55.0K | 0.00% | −619,973−98.8% | Reduced |
| Metropolitan Life Insurance Co | 10,127 | $71.7K | 0.00% | −1,856−15.5% | Reduced |
| Parametric Portfolio Associates LLC | 10,280 | $73.0K | 0.00% | −1,699−14.2% | Reduced |
| Graham Capital Management, L.P. | 11,421 | $80.0K | 0.00% | +11,421 | New |
| Alpine Global Management, LLC | 11,750 | $83.0K | 0.01% | +11,750 | New |
| Voya Investment Management LLC | 15,710 | $111.0K | 0.00% | −1,548−9.0% | Reduced |
| Royal Bank of Canada | 16,162 | $113.0K | 0.00% | +10,464+183.6% | Added |
| Legal & General Group Plc | 16,522 | $117.0K | 0.00% | 00.0% | Unchanged |
| ProShare Advisors LLC | 17,558 | $124.0K | 0.00% | −186−1.0% | Reduced |
| Gsa Capital Partners LLP | 17,739 | $126.0K | 0.02% | +17,739 | New |
| DekaBank Deutsche Girozentrale | 17,600 | $127.0K | 0.00% | +500+2.9% | Added |
| Martingale Asset Management L P | 17,953 | $128.0K | 0.00% | +3,630+25.3% | Added |
| Invesco Ltd. | 18,950 | $135.0K | 0.00% | −1,811−8.7% | Reduced |
| Wells Fargo & Company | 20,113 | $143.0K | 0.00% | +19,427+2,831.9% | Added |
| Tudor Investment Corp Et Al | 20,610 | $146.0K | 0.00% | +20,610 | New |
| Los Angeles Capital Management LLC | 21,269 | $151.0K | 0.00% | −43−0.2% | Reduced |
| Occudo Quantitative Strategies LP | 21,659 | $153.0K | 0.01% | +21,659 | New |
| American International Group, Inc. | 23,285 | $165.0K | 0.00% | −696−2.9% | Reduced |
| Manufacturers Life Insurance Company, The | 23,259 | $166.0K | 0.00% | +803+3.6% | Added |
| Qube Research & Technologies Ltd | 23,503 | $166.0K | 0.00% | +23,503 | New |
| UBS Asset Management Americas Inc | 24,668 | $174.7K | 0.00% | −491−2.0% | Reduced |
| Credit Suisse AG | 24,953 | $177.0K | 0.00% | +840+3.5% | Added |
| Citadel Advisors LLC | 28,706 | $203.0K | 0.00% | +28,706 | New |
| Jump Financial, LLC | 28,700 | $203.0K | 0.01% | +28,700 | New |
| New York State Common Retirement Fund | 31,468 | $223.0K | 0.00% | −142−0.4% | Reduced |
| ExodusPoint Capital Management, LP | 33,265 | $236.0K | 0.00% | +33,265 | New |
| PDT Partners, LLC | 36,843 | $261.0K | 0.02% | +36,843 | New |
| Cubist Systematic Strategies, LLC | 38,421 | $272.0K | 0.00% | +25,538+198.2% | Added |
| Susquehanna International Group, LLP | 41,053 | $291.0K | 0.00% | +9,724+31.0% | Added |
| Nomura Holdings Inc | 43,534 | $308.0K | 0.00% | +43,534 | New |
| Rhumbline Advisers | 43,877 | $311.0K | 0.00% | −1,228−2.7% | Reduced |
| Alliancebernstein L.P. | 46,006 | $326.0K | 0.00% | 00.0% | Unchanged |
| State of Wisconsin Investment Board | 54,300 | $384.0K | 0.00% | 00.0% | Unchanged |
| Marshall Wace, LLP | 54,469 | $385.0K | 0.00% | +17,263+46.4% | Added |
| California State Teachers Retirement System | 55,043 | $390.0K | 0.00% | +1,268+2.4% | Added |
| Walleye Capital LLC | 62,139 | $440.0K | 0.01% | +62,139 | New |
| HRT Financial LP | 66,553 | $471.0K | 0.00% | +66,553 | New |
| Goldman Sachs Group Inc | 70,990 | $503.0K | 0.00% | −278,044−79.7% | Reduced |
| Two Sigma Advisers, LP | 77,900 | $552.0K | 0.00% | +77,900 | New |
| Swiss National Bank | 81,400 | $576.0K | 0.00% | 00.0% | Unchanged |
| Victory Capital Management Inc | 96,571 | $683.0K | 0.00% | −1,176,976−92.4% | Reduced |
| UBS Group AG | 109,327 | $774.0K | 0.00% | +109,327 | New |
| Citigroup Inc | 112,684 | $798.0K | 0.00% | +48,858+76.5% | Added |
| Rafferty Asset Management, LLC | 114,516 | $811.0K | 0.00% | +54,238+90.0% | Added |
| Dimensional Fund Advisors LP | 132,128 | $935.0K | 0.00% | +73,277+124.5% | Added |
| Deutsche Bank AG | 152,356 | $1.08M | 0.00% | −5,010−3.2% | Reduced |
| D. E. Shaw & Co., Inc. | 160,387 | $1.14M | 0.00% | +152,028+1,818.7% | Added |
| Bank of America Corp | 168,245 | $1.19M | 0.00% | +135,551+414.6% | Added |
| BVF Inc | 189,050 | $1.34M | 0.05% | +189,050 | New |
| Renaissance Technologies LLC | 228,900 | $1.62M | 0.00% | +228,900 | New |
| TD Asset Management Inc | 237,621 | $1.68M | 0.00% | +48,281+25.5% | Added |
| Two Sigma Investments, LP | 242,982 | $1.72M | 0.00% | +242,982 | New |
| Morgan Stanley | 244,151 | $1.73M | 0.00% | +7,355+3.1% | Added |
| Nuveen Asset Management, LLC | 134,112 | $1.86M | 0.00% | −10,749−7.4% | Reduced |
| Charles Schwab Investment Management Inc | 318,575 | $2.26M | 0.00% | +13,670+4.5% | Added |
| Northern Trust Corp | 420,184 | $2.98M | 0.00% | −15,332−3.5% | Reduced |
| Harvard Management Co Inc | 510,354 | $3.61M | 0.34% | 00.0% | Unchanged |
| Millennium Management LLC | 538,391 | $3.81M | 0.00% | +538,391 | New |
| JPMorgan Chase & Co | 562,005 | $3.98M | 0.00% | −1,247,973−68.9% | Reduced |
| Bank of New York Mellon Corp | 608,299 | $4.31M | 0.00% | −33,558−5.2% | Reduced |
| Geode Capital Management, LLC | 749,216 | $5.30M | 0.00% | −37,424−4.8% | Reduced |
| Casdin Capital, LLC | 1,324,275 | $9.38M | 0.26% | 00.0% | Unchanged |
| State Street Corp | 1,947,909 | $13.8M | 0.00% | +135,357+7.5% | Added |
| Yiheng Capital Management, L.P. | 1,975,146 | $14.0M | 0.71% | +375,372+23.5% | Added |
| Artal Group S.A. | 2,814,191 | $19.9M | 0.59% | 00.0% | Unchanged |
| BlackRock Inc. | 3,167,656 | $22.4M | 0.00% | +42,517+1.4% | Added |
| Farallon Capital Management, L.L.C. | 3,500,000 | $24.8M | 0.14% | 00.0% | Unchanged |
| Vanguard Group Inc | 3,594,461 | $25.4M | 0.00% | +43,386+1.2% | Added |
| Bellevue Group AG | 3,872,180 | $27.4M | 0.28% | +1,400,000+56.6% | Added |
| Atlas Venture Life Science Advisors, LLC | 8,278,876 | $58.6M | 5.38% | +8,278,876 | New |
| FMR LLC | 8,536,462 | $60.4M | 0.00% | +19,375+0.2% | Added |
| Price T Rowe Associates Inc | 8,647,121 | $61.2M | 0.01% | +18,905+0.2% | Added |
| Carmignac Gestion | 0 | $0 | 0.00% | −1,472,624−100.0% | Sold out |
| Laurion Capital Management LP | 0 | $0 | 0.00% | −91,353−100.0% | Sold out |
| Voloridge Investment Management, LLC | 0 | $0 | 0.00% | −66,606−100.0% | Sold out |
| Penn Mutual Asset Management, LLC | 0 | $0 | 0.00% | −65,040−100.0% | Sold out |
| Ameriprise Financial Inc | 0 | $0 | 0.00% | −31,642−100.0% | Sold out |
| SG Americas Securities, LLC | 0 | $0 | 0.00% | −22,014−100.0% | Sold out |
| Principal Financial Group Inc | 0 | $0 | 0.00% | −19,681−100.0% | Sold out |
| Arizona State Retirement System | 0 | $0 | 0.00% | −10,027−100.0% | Sold out |
| Handelsbanken Fonder AB | 0 | $0 | 0.00% | −9,500−100.0% | Sold out |
| State Board of Administration of Florida Retirement System | 0 | $0 | 0.00% | −8,015−100.0% | Sold out |
| Tortoise Investment Management, LLC | 0 | $0 | 0.00% | −3,325−100.0% | Sold out |