Seres Therapeutics, Inc. · NASDAQ:MCRB
Seres Therapeutics, Inc. shareholders
As of Jun 30, 2026, 34 institutions reported holding Seres Therapeutics, Inc., 22.9% of its shares. Largest: Flagship Pioneering, LLC, Vanguard and Marshall Wace, LLP. New holders, exits, insiders and big stakes, each with its filing.
| Holder | Shares | % of Seres Therapeutics, Inc. | Change | Filed |
|---|---|---|---|---|
| Flagship Pioneering, LLC | 1.16M | 11.6% | no change | Aug 14, 2026 |
| Vanguard | 338K | 3.4% | +2,675 | Aug 13, 2026 |
| Marshall Wace, LLP | 172K | 1.7% | +32,706 | Aug 13, 2026 |
| Vontobel Holding Ltd. | 123K | 1.2% | −15,493 | Aug 3, 2026 |
| BlackRock | 111K | 1.1% | +8,974 | Aug 7, 2026 |
| Geode Capital | 79,974 | 0.80% | +5,139 | Aug 12, 2026 |
| Susquehanna | 58,328 | 0.59% | −47,011 | Aug 14, 2026 |
| State Street | 33,901 | 0.34% | no change | Aug 7, 2026 |
| Lion Point Capital, LP | 31,570 | 0.32% | no change | Aug 14, 2026 |
| Schwab | 31,049 | 0.31% | −581 | Aug 14, 2026 |