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, Q1 2022
Institutional positions in Generation Bio Co. as of Mar 31, 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
- 89
- 0 vs. Q4 2021
- Shares held
- 56.5M
- +1.50M (+2.7%) vs. Q4 2021
- Total value
- $415.8M
- +$25.5M (+6.5%) vs. Q4 2021
- New holders
- 14
- 31 more added
- Sold out
- 14
- 30 more reduced
Compare with Q4 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, Q1 2022
Shares, value and share of portfolio for each institution holding Generation Bio Co.; share changes are against Q4 2021.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Price T Rowe Associates Inc | 8,763,691 | $64.3M | 0.01% | +116,570+1.3% | Added |
| FMR LLC | 8,550,767 | $62.8M | 0.01% | +14,305+0.2% | Added |
| Atlas Venture Life Science Advisors, LLC | 8,278,876 | $60.8M | 7.68% | 00.0% | Unchanged |
| Bellevue Group AG | 3,682,180 | $27.0M | 0.31% | −190,000−4.9% | Reduced |
| Vanguard Group Inc | 3,549,177 | $26.1M | 0.00% | −45,284−1.3% | Reduced |
| Farallon Capital Management, L.L.C. | 3,500,000 | $25.7M | 0.14% | 00.0% | Unchanged |
| BlackRock Inc. | 3,168,813 | $23.3M | 0.00% | +1,1570.0% | Added |
| Artal Group S.A. | 2,814,191 | $20.7M | 0.87% | 00.0% | Unchanged |
| BVF Inc | 2,802,950 | $20.6M | 0.82% | +2,613,900+1,382.7% | Added |
| Yiheng Capital Management, L.P. | 2,597,631 | $19.1M | 1.22% | +622,485+31.5% | Added |
| Casdin Capital, LLC | 1,324,275 | $9.72M | 0.44% | 00.0% | Unchanged |
| State Street Corp | 858,936 | $6.30M | 0.00% | −1,088,973−55.9% | Reduced |
| Geode Capital Management, LLC | 793,037 | $5.82M | 0.00% | +43,821+5.8% | Added |
| JPMorgan Chase & Co | 660,275 | $4.85M | 0.00% | +98,270+17.5% | Added |
| PFM Health Sciences, LP | 574,278 | $4.21M | 0.16% | +574,278 | New |
| Harvard Management Co Inc | 510,354 | $3.75M | 0.38% | 00.0% | Unchanged |
| Northern Trust Corp | 404,176 | $2.97M | 0.00% | −16,008−3.8% | Reduced |
| Nuveen Asset Management, LLC | 173,028 | $2.40M | 0.00% | +38,916+29.0% | Added |
| Charles Schwab Investment Management Inc | 291,712 | $2.14M | 0.00% | −26,863−8.4% | Reduced |
| D. E. Shaw & Co., Inc. | 226,601 | $1.66M | 0.00% | +66,214+41.3% | Added |
| Morgan Stanley | 213,349 | $1.57M | 0.00% | −30,802−12.6% | Reduced |
| TD Asset Management Inc | 209,961 | $1.54M | 0.00% | −27,660−11.6% | Reduced |
| Goldman Sachs Group Inc | 205,168 | $1.51M | 0.00% | +134,178+189.0% | Added |
| State of Wisconsin Investment Board | 152,800 | $1.12M | 0.00% | +98,500+181.4% | Added |
| Deutsche Bank AG | 152,576 | $1.12M | 0.00% | +220+0.1% | Added |
| Manufacturers Life Insurance Company, The | 152,529 | $1.10M | 0.00% | +129,270+555.8% | Added |
| Bank of New York Mellon Corp | 143,405 | $1.05M | 0.00% | −464,894−76.4% | Reduced |
| HighVista Strategies LLC | 131,295 | $964.0K | 0.61% | +131,295 | New |
| Dimensional Fund Advisors LP | 124,736 | $915.0K | 0.00% | −7,392−5.6% | Reduced |
| Two Sigma Investments, LP | 114,924 | $844.0K | 0.00% | −128,058−52.7% | Reduced |
| PDT Partners, LLC | 95,615 | $702.0K | 0.06% | +58,772+159.5% | Added |
| Swiss National Bank | 87,400 | $642.0K | 0.00% | +6,000+7.4% | Added |
| Martingale Asset Management L P | 78,336 | $575.0K | 0.01% | +60,383+336.3% | Added |
| Renaissance Technologies LLC | 72,500 | $532.0K | 0.00% | −156,400−68.3% | Reduced |
| Two Sigma Advisers, LP | 69,000 | $506.0K | 0.00% | −8,900−11.4% | Reduced |
| Los Angeles Capital Management LLC | 68,392 | $502.0K | 0.00% | +47,123+221.6% | Added |
| HRT Financial LP | 58,448 | $429.0K | 0.00% | −8,105−12.2% | Reduced |
| California State Teachers Retirement System | 50,354 | $370.0K | 0.00% | −4,689−8.5% | Reduced |
| Citadel Advisors LLC | 48,488 | $356.0K | 0.00% | +19,782+68.9% | Added |
| Alliancebernstein L.P. | 46,106 | $338.0K | 0.00% | +100+0.2% | Added |
| Rhumbline Advisers | 44,156 | $324.0K | 0.00% | +279+0.6% | Added |
| Occudo Quantitative Strategies LP | 38,120 | $280.0K | 0.02% | +16,461+76.0% | Added |
| Squarepoint Ops LLC | 37,758 | $277.0K | 0.00% | +37,758 | New |
| Nisa Investment Advisors, LLC | 34,700 | $255.0K | 0.00% | +33,900+4,237.5% | Added |
| Marshall Wace, LLP | 34,473 | $253.0K | 0.00% | −19,996−36.7% | Reduced |
| Susquehanna International Group, LLP | 30,557 | $224.0K | 0.00% | −10,496−25.6% | Reduced |
| Schonfeld Strategic Advisors LLC | 30,400 | $224.0K | 0.00% | +30,400 | New |
| Tudor Investment Corp Et Al | 28,181 | $207.0K | 0.01% | +7,571+36.7% | Added |
| Credit Suisse AG | 26,472 | $195.0K | 0.00% | +1,519+6.1% | Added |
| UBS Asset Management Americas Inc | 24,668 | $181.1K | 0.00% | 00.0% | Unchanged |
| Jane Street Group, LLC | 24,715 | $181.0K | 0.00% | +24,715 | New |
| Bank of America Corp | 21,945 | $161.0K | 0.00% | −146,300−87.0% | Reduced |
| American International Group, Inc. | 21,754 | $160.0K | 0.00% | −1,531−6.6% | Reduced |
| Citigroup Inc | 19,921 | $146.0K | 0.00% | −92,763−82.3% | Reduced |
| Thrivent Financial for Lutherans | 19,836 | $146.0K | 0.00% | +19,836 | New |
| MetLife Investment Management | 19,788 | $145.2K | 0.00% | +16,357+476.7% | Added |
| Invesco Ltd. | 19,176 | $141.0K | 0.00% | +226+1.2% | Added |
| DekaBank Deutsche Girozentrale | 19,400 | $139.0K | 0.00% | +1,800+10.2% | Added |
| Parametric Portfolio Associates LLC | 17,454 | $128.0K | 0.00% | +7,174+69.8% | Added |
| New York State Common Retirement Fund | 17,268 | $127.0K | 0.00% | −14,200−45.1% | Reduced |
| Legal & General Group Plc | 16,689 | $123.0K | 0.00% | +167+1.0% | Added |
| Voya Investment Management LLC | 15,710 | $115.0K | 0.00% | 00.0% | Unchanged |
| Victory Capital Management Inc | 17,736 | $112.0K | 0.00% | −78,835−81.6% | Reduced |
| ProShare Advisors LLC | 14,115 | $103.0K | 0.00% | −3,443−19.6% | Reduced |
| Virginia Retirement Systems Et Al | 11,400 | $84.0K | 0.00% | +11,400 | New |
| Rafferty Asset Management, LLC | 11,140 | $82.0K | 0.00% | −103,376−90.3% | Reduced |
| Prelude Capital Management, LLC | 10,098 | $74.0K | 0.00% | +10,098 | New |
| Royal Bank of Canada | 9,043 | $67.0K | 0.00% | −7,119−44.0% | Reduced |
| Quantbot Technologies LP | 8,000 | $58.0K | 0.01% | +7,700+2,566.7% | Added |
| Ensign Peak Advisors, Inc | 7,790 | $57.0K | 0.00% | 00.0% | Unchanged |
| Barclays PLC | 7,285 | $54.0K | 0.00% | +7,285 | New |
| Amalgamated Bank | 7,040 | $52.0K | 0.00% | +7,040 | New |
| Amalgamated Financial Corp. | 7,040 | $52.0K | 0.00% | +7,040 | New |
| UBS Group AG | 6,177 | $45.0K | 0.00% | −103,150−94.3% | Reduced |
| Wells Fargo & Company | 6,106 | $45.0K | 0.00% | −14,007−69.6% | Reduced |
| Ameritas Investment Partners, Inc. | 3,277 | $24.0K | 0.00% | 00.0% | Unchanged |
| Metropolitan Life Insurance Co | 3,046 | $22.4K | 0.00% | −7,081−69.9% | Reduced |
| Great West Life Assurance Co | 2,286 | $18.0K | 0.00% | +210+10.1% | Added |
| Tower Research Capital LLC (TRC) | 1,126 | $8.00K | 0.00% | −4,232−79.0% | Reduced |
| Compagnie Lombard Odier SCmA | 1,050 | $8.00K | 0.00% | 00.0% | Unchanged |
| Manchester Capital Management LLC | 1,000 | $7.00K | 0.00% | 00.0% | Unchanged |
| RPg Family Wealth Advisory, LLC | 758 | $5.56K | 0.00% | +758 | New |
| Macquarie Group Ltd | 498 | $4.00K | 0.00% | 00.0% | Unchanged |
| US Bancorp | 276 | $2.00K | 0.00% | +276 | New |
| Signaturefd, LLC | 86 | $1.00K | 0.00% | −1,340−94.0% | Reduced |
| Daiwa Securities Group Inc. | 194 | $1.00K | 0.00% | 00.0% | Unchanged |
| Huntington National Bank | 1 | $0 | 0.00% | 00.0% | Unchanged |
| First Horizon Advisors, Inc. | 16 | $0 | 0.00% | −48−75.0% | Reduced |
| Capital Advisors, Ltd. LLC | 12 | $0 | 0.00% | +12 | New |
| Millennium Management LLC | 0 | $0 | 0.00% | −538,391−100.0% | Sold out |
| Walleye Capital LLC | 0 | $0 | 0.00% | −62,139−100.0% | Sold out |
| Nomura Holdings Inc | 0 | $0 | 0.00% | −43,534−100.0% | Sold out |
| Cubist Systematic Strategies, LLC | 0 | $0 | 0.00% | −38,421−100.0% | Sold out |
| ExodusPoint Capital Management, LP | 0 | $0 | 0.00% | −33,265−100.0% | Sold out |
| Jump Financial, LLC | 0 | $0 | 0.00% | −28,700−100.0% | Sold out |
| Qube Research & Technologies Ltd | 0 | $0 | 0.00% | −23,503−100.0% | Sold out |
| Gsa Capital Partners LLP | 0 | $0 | 0.00% | −17,739−100.0% | Sold out |
| Alpine Global Management, LLC | 0 | $0 | 0.00% | −11,750−100.0% | Sold out |
| Graham Capital Management, L.P. | 0 | $0 | 0.00% | −11,421−100.0% | Sold out |
| Simplex Trading, LLC | 0 | $0 | 0.00% | −4,674−100.0% | Sold out |