Generation Bio Co. GBIO
5.34 USD 0.00 (+0.00%)
Feb 10, 2026, 9:30 AM EST
5.34 Day range 5.34
52-week range unavailable
- YTD
- -5.99%
- 1 year
- -23.71%
Held by funds
1 US ETFs and mutual funds hold GBIO · largest positions
| Fund | Value held | Weight in fund |
|---|---|---|
| TYNE | 0.35% |
Ownership
Held by insiders 14.51%
Held by institutions 82.94%
Float held by institutions 97.02%
Institutions 118
Top institutional holders
| Holder | % held | Shares | Value | Reported |
|---|---|---|---|---|
| Price (T.Rowe) Associates Inc | 14.00% | 9,351,590 | 10.29M | Sep 29, 2024 |
| Atlas Venture Life Science Advisors, LLC | 12.40% | 8,279,484 | 9.11M | Sep 29, 2024 |
| FMR, LLC | 7.97% | 5,320,266 | 5.85M | Sep 29, 2024 |
| Bellevue Group AG | 5.87% | 3,918,856 | 4.31M | Sep 29, 2024 |
| Blackrock Inc. | 5.11% | 3,415,998 | 3.76M | Sep 29, 2024 |
| Siren, L.L.C. | 4.47% | 2,982,733 | 3.28M | Sep 29, 2024 |
Top mutual fund holders
| Holder | % held | Shares | Value | Reported |
|---|---|---|---|---|
| Price (T.Rowe) New Horizons Fund | 8.00% | 5,341,800 | 5.88M | Sep 29, 2024 |
| Fidelity Growth Company Fund | 2.72% | 1,818,215 | 2.00M | Oct 30, 2024 |
| Price (T.Rowe) Health Sciences Fund | 2.63% | 1,759,966 | 1.94M | Sep 29, 2024 |
| Vanguard Total Stock Market Index Fund | 2.33% | 1,557,423 | 1.71M | Sep 29, 2024 |
| iShares Russell 2000 ETF | 1.87% | 1,249,357 | 1.37M | Oct 30, 2024 |
| Price (T.Rowe) New Horizons Trust | 1.55% | 1,035,708 | 1.14M | Sep 29, 2024 |
Insiders
| Insider | Relation | Latest transaction | Date | Shares held |
|---|---|---|---|---|
| APPELHANS DANNIELLE | Director | Purchase | Dec 7, 2023 | 0 |
| HOWZE YALONDA | Officer | Conversion of Exercise of derivative security | Oct 14, 2024 | 14,186 |
| KERR DOUGLAS | Officer | Conversion of Exercise of derivative security | Jan 28, 2024 | 385,628 |
| MCDONOUGH CAMERON GEOFFREY | Chief Executive Officer | Conversion of Exercise of derivative security | Oct 14, 2024 | 1,839,090 |
| NORKUNAS MATTHEW | Chief Financial Officer | Conversion of Exercise of derivative security | Oct 14, 2024 | 57,348 |
| PAONE ANTOINETTE D | Chief Operating Officer | Conversion of Exercise of derivative security | Oct 14, 2024 | 16,055 |