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 2021
Institutional positions in Generation Bio Co. as of Sep 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
- 82
- −15 vs. Q2 2021
- Shares held
- 48.0M
- +1.50M (+3.2%) vs. Q2 2021
- Total value
- $1.20B
- −$46.5M (−3.7%) vs. Q2 2021
- New holders
- 8
- 32 more added
- Sold out
- 23
- 27 more reduced
1 institution that held it in Q2 2021 haven't filed for Q3 2021 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q2 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, Q3 2021
Shares, value and share of portfolio for each institution holding Generation Bio Co.; share changes are against Q2 2021.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Huntington National Bank | 1 | $0 | 0.00% | −208−99.5% | Reduced |
| Signaturefd, LLC | 25 | $1.00K | 0.00% | −4−13.8% | Reduced |
| First Horizon Advisors, Inc. | 64 | $1.00K | 0.00% | +34+113.3% | Added |
| Point72 Hong Kong Ltd | 100 | $3.00K | 0.00% | +100 | New |
| TCI Wealth Advisors, Inc. | 142 | $4.00K | 0.00% | +142 | New |
| Daiwa Securities Group Inc. | 194 | $5.00K | 0.00% | +86+79.6% | Added |
| Macquarie Group Ltd | 498 | $12.0K | 0.00% | 00.0% | Unchanged |
| Quantbot Technologies LP | 500 | $12.0K | 0.00% | +500 | New |
| Wells Fargo & Company | 686 | $17.0K | 0.00% | +500+268.8% | Added |
| RPg Family Wealth Advisory, LLC | 758 | $19.0K | 0.01% | 00.0% | Unchanged |
| Manchester Capital Management LLC | 1,000 | $25.0K | 0.00% | +1,000 | New |
| Compagnie Lombard Odier SCmA | 1,050 | $27.0K | 0.00% | 00.0% | Unchanged |
| Penserra Capital Management LLC | 1,300 | $32.0K | 0.00% | +10+0.8% | Added |
| Great West Life Assurance Co | 1,866 | $47.0K | 0.00% | 00.0% | Unchanged |
| Ameritas Investment Partners, Inc. | 3,277 | $82.0K | 0.00% | 00.0% | Unchanged |
| Tortoise Investment Management, LLC | 3,325 | $83.0K | 0.02% | 00.0% | Unchanged |
| Nisa Investment Advisors, LLC | 3,800 | $95.0K | 0.00% | +3,000+375.0% | Added |
| Tower Research Capital LLC (TRC) | 4,507 | $113.0K | 0.00% | +1,703+60.7% | Added |
| Royal Bank of Canada | 5,698 | $143.0K | 0.00% | +1,322+30.2% | Added |
| State Board of Administration of Florida Retirement System | 8,015 | $201.0K | 0.00% | +60+0.8% | Added |
| D. E. Shaw & Co., Inc. | 8,359 | $210.0K | 0.00% | −116,791−93.3% | Reduced |
| Handelsbanken Fonder AB | 9,500 | $238.0K | 0.00% | 00.0% | Unchanged |
| Arizona State Retirement System | 10,027 | $251.0K | 0.00% | +183+1.9% | Added |
| Parametric Portfolio Associates LLC | 11,979 | $300.0K | 0.00% | −785−6.2% | Reduced |
| Metropolitan Life Insurance Co | 11,983 | $300.4K | 0.00% | 00.0% | Unchanged |
| Cubist Systematic Strategies, LLC | 12,883 | $323.0K | 0.00% | +12,883 | New |
| Martingale Asset Management L P | 14,323 | $360.0K | 0.00% | +14,323 | New |
| MetLife Investment Management | 15,606 | $391.2K | 0.00% | 00.0% | Unchanged |
| Legal & General Group Plc | 16,522 | $414.0K | 0.00% | +7,095+75.3% | Added |
| DekaBank Deutsche Girozentrale | 17,100 | $415.0K | 0.00% | 00.0% | Unchanged |
| Voya Investment Management LLC | 17,258 | $433.0K | 0.00% | 00.0% | Unchanged |
| ProShare Advisors LLC | 17,744 | $445.0K | 0.00% | −3,798−17.6% | Reduced |
| Principal Financial Group Inc | 19,681 | $494.0K | 0.00% | +7,096+56.4% | Added |
| Invesco Ltd. | 20,761 | $521.0K | 0.00% | +3,067+17.3% | Added |
| Los Angeles Capital Management LLC | 21,312 | $534.0K | 0.00% | −11,130−34.3% | Reduced |
| SG Americas Securities, LLC | 22,014 | $552.0K | 0.00% | +22,014 | New |
| Manufacturers Life Insurance Company, The | 22,456 | $563.0K | 0.00% | −1,665−6.9% | Reduced |
| American International Group, Inc. | 23,981 | $601.0K | 0.00% | −571−2.3% | Reduced |
| Credit Suisse AG | 24,113 | $605.0K | 0.00% | +1,392+6.1% | Added |
| UBS Asset Management Americas Inc | 25,159 | $630.7K | 0.00% | +2,685+11.9% | Added |
| Simplex Trading, LLC | 23,030 | $631.0K | 0.02% | −1,368−5.6% | Reduced |
| Susquehanna International Group, LLP | 31,329 | $785.0K | 0.00% | −1,195−3.7% | Reduced |
| New York State Common Retirement Fund | 31,610 | $792.0K | 0.00% | −7,617−19.4% | Reduced |
| Ameriprise Financial Inc | 31,642 | $793.0K | 0.00% | +9,207+41.0% | Added |
| Bank of America Corp | 32,694 | $819.0K | 0.00% | +14,286+77.6% | Added |
| Marshall Wace, LLP | 37,206 | $933.0K | 0.00% | −74,124−66.6% | Reduced |
| Rhumbline Advisers | 45,105 | $1.13M | 0.00% | +1,970+4.6% | Added |
| Alliancebernstein L.P. | 46,006 | $1.15M | 0.00% | 00.0% | Unchanged |
| California State Teachers Retirement System | 53,775 | $1.35M | 0.00% | −6,632−11.0% | Reduced |
| State of Wisconsin Investment Board | 54,300 | $1.36M | 0.00% | 00.0% | Unchanged |
| Dimensional Fund Advisors LP | 58,851 | $1.48M | 0.00% | +58,851 | New |
| Rafferty Asset Management, LLC | 60,278 | $1.51M | 0.01% | −27,146−31.1% | Reduced |
| Citigroup Inc | 63,826 | $1.60M | 0.00% | −94,966−59.8% | Reduced |
| Penn Mutual Asset Management, LLC | 65,040 | $1.63M | 2.58% | −8,025−11.0% | Reduced |
| Voloridge Investment Management, LLC | 66,606 | $1.67M | 0.01% | −47,678−41.7% | Reduced |
| Swiss National Bank | 81,400 | $2.04M | 0.00% | +1,600+2.0% | Added |
| Laurion Capital Management LP | 91,353 | $2.29M | 0.03% | −27,245−23.0% | Reduced |
| Nuveen Asset Management, LLC | 144,861 | $3.64M | 0.00% | −14,958−9.4% | Reduced |
| Deutsche Bank AG | 157,366 | $3.95M | 0.00% | +87+0.1% | Added |
| TD Asset Management Inc | 189,340 | $4.75M | 0.00% | +11,425+6.4% | Added |
| Morgan Stanley | 236,796 | $5.94M | 0.00% | −17,512−6.9% | Reduced |
| Charles Schwab Investment Management Inc | 304,905 | $7.64M | 0.00% | +111,011+57.3% | Added |
| Goldman Sachs Group Inc | 349,034 | $8.75M | 0.00% | −29,589−7.8% | Reduced |
| Northern Trust Corp | 435,516 | $10.9M | 0.00% | +30,086+7.4% | Added |
| Marshall Wace North America L.P. | 448,789 | $11.3M | 0.05% | +398,244+787.9% | Added |
| Harvard Management Co Inc | 510,354 | $12.8M | 0.75% | −1,995−0.4% | Reduced |
| Ensign Peak Advisors, Inc | 627,763 | $15.7M | 0.03% | −100,033−13.7% | Reduced |
| Bank of New York Mellon Corp | 641,857 | $16.1M | 0.00% | +19,784+3.2% | Added |
| Geode Capital Management, LLC | 786,640 | $19.7M | 0.00% | +223,767+39.8% | Added |
| Victory Capital Management Inc | 1,273,547 | $31.9M | 0.03% | +152,567+13.6% | Added |
| Casdin Capital, LLC | 1,324,275 | $33.2M | 0.83% | −286,939−17.8% | Reduced |
| Carmignac Gestion | 1,472,624 | $36.9M | 0.46% | −900−0.1% | Reduced |
| Yiheng Capital Management, L.P. | 1,599,774 | $40.1M | 1.97% | +183,291+12.9% | Added |
| JPMorgan Chase & Co | 1,809,978 | $45.4M | 0.01% | +343,886+23.5% | Added |
| State Street Corp | 1,812,552 | $45.4M | 0.00% | −431,649−19.2% | Reduced |
| Bellevue Group AG | 2,472,180 | $62.0M | 0.63% | −6,000−0.2% | Reduced |
| Artal Group S.A. | 2,814,191 | $70.6M | 1.74% | 00.0% | Unchanged |
| BlackRock Inc. | 3,125,139 | $78.3M | 0.00% | +274,999+9.6% | Added |
| Farallon Capital Management, L.L.C. | 3,500,000 | $87.7M | 0.47% | 00.0% | Unchanged |
| Vanguard Group Inc | 3,551,075 | $89.0M | 0.00% | +325,749+10.1% | Added |
| FMR LLC | 8,517,087 | $213.5M | 0.02% | +22,065+0.3% | Added |
| Price T Rowe Associates Inc | 8,628,216 | $216.3M | 0.02% | +1,265,101+17.2% | Added |
| American Century Companies Inc | 0 | $0 | 0.00% | −246,377−100.0% | Sold out |
| AWM Investment Company, Inc. | 0 | $0 | 0.00% | −225,599−100.0% | Sold out |
| Millennium Management LLC | 0 | $0 | 0.00% | −37,440−100.0% | Sold out |
| Squarepoint Ops LLC | 0 | $0 | 0.00% | −22,942−100.0% | Sold out |
| Susquehanna Fundamental Investments, LLC | 0 | $0 | 0.00% | −19,500−100.0% | Sold out |
| Citadel Advisors LLC | 0 | $0 | 0.00% | −19,197−100.0% | Sold out |
| UBS Group AG | 0 | $0 | 0.00% | −17,217−100.0% | Sold out |
| Sectoral Asset Management Inc | 0 | $0 | 0.00% | −16,522−100.0% | Sold out |
| Dana Investment Advisors, Inc. | 0 | $0 | 0.00% | −16,098−100.0% | Sold out |
| PDT Partners, LLC | 0 | $0 | 0.00% | −12,644−100.0% | Sold out |
| Thrivent Financial for Lutherans | 0 | $0 | 0.00% | −11,021−100.0% | Sold out |
| Darwin Global Management, Ltd. | 0 | $0 | 0.00% | −10,738−100.0% | Sold out |
| Dynamic Technology Lab Private Ltd | 0 | $0 | 0.00% | −10,080−100.0% | Sold out |
| Trexquant Investment LP | 0 | $0 | 0.00% | −8,608−100.0% | Sold out |
| Renaissance Technologies LLC | 0 | $0 | 0.00% | −8,400−100.0% | Sold out |
| Amalgamated Bank | 0 | $0 | 0.00% | −8,143−100.0% | Sold out |
| Private Advisor Group, LLC | 0 | $0 | 0.00% | −7,661−100.0% | Sold out |
| Wetherby Asset Management Inc | 0 | $0 | 0.00% | −7,594−100.0% | Sold out |