Seres Therapeutics, Inc.
MCRB- Exchange
- Nasdaq
- Industry
- Pharmaceutical Preparations
- SEC CIK
- 0001609809
In the last 90 days, Seres Therapeutics, Inc. insiders filed 0 open-market purchases and 4 sales; 35 institutions reported holding it in 13F filings for Q2 2026, worth $17.9M in total; no superinvestor holds it.
13F holders, Q2 2025
Institutional positions in Seres Therapeutics, Inc. as of Jun 30, 2025. 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
- 33
- −29 vs. Q1 2025
- Shares held
- 2.28M
- −790.1K (−25.7%) vs. Q1 2025Converted for a 1-for-20 split
- Total value
- $25.4M
- −$17.7M (−41.0%) vs. Q1 2025
- New holders
- 8
- 8 more added
- Sold out
- 37
- 10 more reduced
1 institution that held it in Q1 2025 haven't filed for Q2 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting MCRB 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 | 35 | $17.9M |
| Q1 2026 | 33 | $20.5M |
| Q4 2025 | 36 | $36.4M |
| Q3 2025 | 32 | $40.9M |
| Q2 2025 | 33 | $25.4M |
| Q1 2025 | 63 | $43.1M |
| Q4 2024 | 69 | $52.5M |
| Q3 2024 | 77 | $60.1M |
| Q2 2024 | 93 | $50.0M |
| Q1 2024 | 99 | $66.3M |
| Q4 2023 | 103 | $125.4M |
| Q3 2023 | 134 | $255.6M |
| Q2 2023 | 138 | $538.1M |
| Q1 2023 | 123 | $593.9M |
| Q4 2022 | 124 | $588.2M |
| Q3 2022 | 120 | $671.6M |
| Q2 2022 | 123 | $312.7M |
| Q1 2022 | 131 | $537.2M |
| Q4 2021 | 148 | $642.8M |
| Q3 2021 | 133 | $555.1M |
| Q2 2021 | 147 | $1.93B |
| Q1 2021 | 154 | $1.85B |
Institutions, Q2 2025
Shares, value and share of portfolio for each institution holding Seres Therapeutics, Inc.; share changes are against Q1 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Whittier Trust Co | 1 | $11 | 0.00% | −1−33.3% | ReducedConverted for a 1-for-20 split |
| Advisor Group Holdings, Inc. | 8 | $88 | 0.00% | 00.0% | UnchangedConverted for a 1-for-20 split |
| Citigroup Inc | 9 | $100 | 0.00% | −2−16.3% | ReducedConverted for a 1-for-20 split |
| Wells Fargo & Company | 10 | $111 | 0.00% | −380−97.4% | ReducedConverted for a 1-for-20 split |
| US Bancorp | 25 | $278 | 0.00% | +25 | New |
| Raymond James Financial Inc | 56 | $623 | 0.00% | +56 | New |
| JPMorgan Chase & Co | 65 | $722 | 0.00% | 00.0% | UnchangedConverted for a 1-for-20 split |
| UMA Financial Services, Inc. | 142 | $1.58K | 0.00% | +142 | New |
| Tower Research Capital LLC (TRC) | 185 | $2.06K | 0.00% | +185 | New |
| Bank of America Corp | 186 | $2.07K | 0.00% | −112−37.5% | ReducedConverted for a 1-for-20 split |
| BNP Paribas Arbitrage, SA | 305 | $3.39K | 0.00% | −2−0.6% | ReducedConverted for a 1-for-20 split |
| Atlantic Union Bankshares Corp | 411 | $4.57K | 0.00% | +411 | New |
| Group One Trading, L.P. | 1,161 | $12.9K | 0.00% | +26+2.3% | AddedConverted for a 1-for-20 split |
| SBI Securities Co., Ltd. | 3,482 | $38.7K | 0.00% | 00.0% | UnchangedConverted for a 1-for-20 split |
| Royal Bank of Canada | 6,954 | $77.0K | 0.00% | +6,732+3,029.6% | AddedConverted for a 1-for-20 split |
| UBS Group AG | 7,532 | $83.7K | 0.00% | −65,276−89.7% | ReducedConverted for a 1-for-20 split |
| Morgan Stanley | 7,838 | $87.1K | 0.00% | +358+4.8% | AddedConverted for a 1-for-20 split |
| Susquehanna International Group, LLP | 11,684 | $129.8K | 0.00% | −24,173−67.4% | ReducedConverted for a 1-for-20 split |
| Bridgeway Capital Management, LLC | 12,500 | $138.9K | 0.00% | 00.0% | UnchangedConverted for a 1-for-20 split |
| Tang Capital Management LLC | 13,921 | $154.7K | 0.01% | +3,726+36.5% | AddedConverted for a 1-for-20 split |
| Northern Trust Corp | 15,076 | $167.5K | 0.00% | 00.0% | UnchangedConverted for a 1-for-20 split |
| Lion Point Capital, LP | 17,038 | $189.3K | 1.29% | 00.0% | UnchangedConverted for a 1-for-20 split |
| Squarepoint Ops LLC | 20,908 | $232.3K | 0.00% | +20,908 | New |
| XTX Topco Ltd | 22,417 | $249.1K | 0.01% | +22,417 | New |
| State Street Corp | 26,831 | $298.1K | 0.00% | +1,794+7.2% | AddedConverted for a 1-for-20 split |
| Charles Schwab Investment Management Inc | 34,876 | $387.5K | 0.00% | −6,829−16.4% | ReducedConverted for a 1-for-20 split |
| Vontobel Holding Ltd. | 80,325 | $892.4K | 0.00% | +26,027+47.9% | AddedConverted for a 1-for-20 split |
| Marshall Wace, LLP | 91,405 | $1.02M | 0.00% | +91,405 | New |
| Geode Capital Management, LLC | 91,602 | $1.02M | 0.00% | +10,663+13.2% | AddedConverted for a 1-for-20 split |
| BlackRock, Inc. | 101,351 | $1.13M | 0.00% | +13,243+15.0% | AddedConverted for a 1-for-20 split |
| FMR LLC | 268,704 | $2.99M | 0.00% | −825,768−75.4% | ReducedConverted for a 1-for-20 split |
| Vanguard Group Inc | 292,096 | $3.25M | 0.00% | −12,504−4.1% | ReducedConverted for a 1-for-20 split |
| Flagship Pioneering Inc. | 1,155,850 | $12.8M | 4.78% | 00.0% | UnchangedConverted for a 1-for-20 split |
| Invesco Ltd. | 0 | $0 | 0.00% | −6,829−100.0% | Sold outConverted for a 1-for-20 split |
| Providence Wealth Advisors, LLC | 0 | $0 | 0.00% | −5,250−100.0% | Sold outConverted for a 1-for-20 split |
| LPL Financial LLC | 0 | $0 | 0.00% | −4,757−100.0% | Sold outConverted for a 1-for-20 split |
| Goldman Sachs Group Inc | 0 | $0 | 0.00% | −3,731−100.0% | Sold outConverted for a 1-for-20 split |
| Tudor Investment Corp Et Al | 0 | $0 | 0.00% | −3,099−100.0% | Sold outConverted for a 1-for-20 split |
| Schonfeld Strategic Advisors LLC | 0 | $0 | 0.00% | −2,565−100.0% | Sold outConverted for a 1-for-20 split |
| JustInvest LLC | 0 | $0 | 0.00% | −2,536−100.0% | Sold outConverted for a 1-for-20 split |
| Engineers Gate Manager LP | 0 | $0 | 0.00% | −2,382−100.0% | Sold outConverted for a 1-for-20 split |
| Avantax Advisory Services, Inc. | 0 | $0 | 0.00% | −2,259−100.0% | Sold outConverted for a 1-for-20 split |
| Kestra Advisory Services, LLC | 0 | $0 | 0.00% | −1,924−100.0% | Sold outConverted for a 1-for-20 split |
| Cantor Fitzgerald, L. P. | 0 | $0 | 0.00% | −1,874−100.0% | Sold outConverted for a 1-for-20 split |
| Ironwood Investment Management LLC | 0 | $0 | 0.00% | −1,825−100.0% | Sold outConverted for a 1-for-20 split |
| Two Sigma Investments, LP | 0 | $0 | 0.00% | −1,616−100.0% | Sold outConverted for a 1-for-20 split |
| Millennium Management LLC | 0 | $0 | 0.00% | −1,478−100.0% | Sold outConverted for a 1-for-20 split |
| Two Sigma Securities, LLC | 0 | $0 | 0.00% | −1,279−100.0% | Sold outConverted for a 1-for-20 split |
| Arete Wealth Advisors, LLC | 0 | $0 | 0.00% | −1,045−100.0% | Sold outConverted for a 1-for-20 split |
| Stifel Financial Corp | 0 | $0 | 0.00% | −1,000−100.0% | Sold outConverted for a 1-for-20 split |
| Janney Montgomery Scott LLC | 0 | $0 | 0.00% | −1,000−100.0% | Sold outConverted for a 1-for-20 split |
| MML Investors Services, LLC | 0 | $0 | 0.00% | −793−100.0% | Sold outConverted for a 1-for-20 split |
| Victory Capital Management Inc | 0 | $0 | 0.00% | −767−100.0% | Sold outConverted for a 1-for-20 split |
| Aries Wealth Management | 0 | $0 | 0.00% | −750−100.0% | Sold outConverted for a 1-for-20 split |
| Miller Financial Services LLC | 0 | $0 | 0.00% | −750−100.0% | Sold outConverted for a 1-for-20 split |
| Captrust Financial Advisors | 0 | $0 | 0.00% | −655−100.0% | Sold outConverted for a 1-for-20 split |
| Peapack Gladstone Financial Corp | 0 | $0 | 0.00% | −650−100.0% | Sold outConverted for a 1-for-20 split |
| Mission Wealth Management, LP | 0 | $0 | 0.00% | −575−100.0% | Sold outConverted for a 1-for-20 split |
| Commonwealth Equity Services, LLC | 0 | $0 | 0.00% | −580−100.0% | Sold outConverted for a 1-for-20 split |
| Diversified Trust Co | 0 | $0 | 0.00% | −500−100.0% | Sold outConverted for a 1-for-20 split |
| Integrated Wealth Concepts LLC | 0 | $0 | 0.00% | −500−100.0% | Sold outConverted for a 1-for-20 split |
| Barclays PLC | 0 | $0 | 0.00% | −80−100.0% | Sold outConverted for a 1-for-20 split |
| TFC Financial Management | 0 | $0 | 0.00% | −50−100.0% | Sold outConverted for a 1-for-20 split |
| Continuum Advisory, LLC | 0 | $0 | 0.00% | −48−100.0% | Sold outConverted for a 1-for-20 split |
| EverSource Wealth Advisors, LLC | 0 | $0 | 0.00% | −33−100.0% | Sold outConverted for a 1-for-20 split |
| Nisa Investment Advisors, LLC | 0 | $0 | 0.00% | −10−100.0% | Sold outConverted for a 1-for-20 split |
| Farther Finance Advisors, LLC | 0 | $0 | 0.00% | −10−100.0% | Sold outConverted for a 1-for-20 split |
| Sound Income Strategies, LLC | 0 | $0 | 0.00% | −9−100.0% | Sold outConverted for a 1-for-20 split |
| Jones Financial Companies LLLP | 0 | $0 | 0.00% | −2−100.0% | Sold outConverted for a 1-for-20 split |
| Citadel Advisors LLC | 0 | $0 | 0.00% | −2−100.0% | Sold outConverted for a 1-for-20 split |
| Sandy Spring Bank | – | – | – | – | Not filed |