Institutional Ownership
Seres Therapeutics Inc
CUSIP 81750R201COM NEWMCRBQ1 2026
Institutional Holders
30
13F filers
Shares Held
1.97M
Aggregate institutional
Institutional Value
$17.48M
Q1 2026
Net New Holders
-5
2 new · 7 closed
Institutional Ownership Trend
Aggregate 13F value by quarter
Multi-quarter trend — upgrade to see history
UpgradePosition Activity
Q1 2026
New positions2
Increased10
Decreased8
Sold out7
Institutional Holders
30 funds hold this security · Q1 2026
| # | Fund | Shares | Value | Δ Shares | Activity |
|---|---|---|---|---|---|
| 1 | Flagship Pioneering, LLC | 1.16M | $10.25M | 0 | Held |
| 2 | Marshall Wace, LLP | 139.5K | $1.24M | +19.4K | Added |
| 3 | Vontobel Holding Ltd. | 138.5K | $1.23M | +35.2K | Added |
| 4 | Susquehanna International Group, LLP | 105.3K | $934.4K | −74.6K | Reduced |
| 5 | Blackrock, Inc. | 102.0K | $905.0K | −1.6K | Reduced |
| 6 | Geode Capital Management, LLC | 74.8K | $664.1K | −11.3K | Reduced |
| 7 | American Century Companies Inc | 62.3K | $552.7K | +46.0K | Added |
| 8 | State Street Corp | 33.9K | $300.7K | 0 | Held |
| 9 | Charles Schwab Investment Management Inc | 31.6K | $280.6K | +261 | Added |
| 10 | Lion Point Capital, LP | 31.6K | $280.0K | 0 | Held |
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