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, Q4 2025
Institutional positions in Seres Therapeutics, Inc. as of Dec 31, 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
- 36
- +4 vs. Q3 2025
- Shares held
- 2.44M
- +315.7K (+14.9%) vs. Q3 2025
- Total value
- $36.4M
- −$4.53M (−11.1%) vs. Q3 2025
- New holders
- 9
- 14 more added
- Sold out
- 5
- 7 more reduced
Compare with Q3 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, Q4 2025
Shares, value and share of portfolio for each institution holding Seres Therapeutics, Inc.; share changes are against Q3 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Royal Bank of Canada | 9 | $0 | 0.00% | −287−97.0% | Reduced |
| SRS Capital Advisors, Inc. | 2 | $30 | 0.00% | 00.0% | Unchanged |
| Allworth Financial LP | 4 | $60 | 0.00% | +4 | New |
| Advisor Group Holdings, Inc. | 8 | $119 | 0.00% | 00.0% | Unchanged |
| Sound Income Strategies, LLC | 8 | $128 | 0.00% | 00.0% | Unchanged |
| UMA Financial Services, Inc. | 142 | $2.11K | 0.00% | 00.0% | Unchanged |
| Bank of America Corp | 195 | $2.90K | 0.00% | −5,148−96.4% | Reduced |
| Wells Fargo & Company | 260 | $3.87K | 0.00% | +250+2,500.0% | Added |
| BNP Paribas Arbitrage, SA | 773 | $11.5K | 0.00% | +561+264.6% | Added |
| Simplex Trading, LLC | 1,232 | $18.3K | 0.00% | −1,575−56.1% | Reduced |
| Rachor Investment Advisory Services, LLC | 1,477 | $22.0K | 0.01% | +1,477 | New |
| FMR LLC | 1,740 | $25.9K | 0.00% | −142−7.5% | Reduced |
| SBI Securities Co., Ltd. | 3,482 | $51.8K | 0.00% | 00.0% | Unchanged |
| UBS Group AG | 4,226 | $62.9K | 0.00% | −8,456−66.7% | Reduced |
| Barclays PLC | 7,432 | $110.6K | 0.00% | +6,024+427.8% | Added |
| ExodusPoint Capital Management, LP | 12,737 | $189.5K | 0.00% | +12,737 | New |
| Goldman Sachs Group Inc | 14,340 | $213.4K | 0.00% | +14,340 | New |
| Invesco Ltd. | 14,360 | $213.7K | 0.00% | +3,918+37.5% | Added |
| Omers Administration Corp | 14,400 | $214.3K | 0.00% | +14,400 | New |
| Northern Trust Corp | 14,765 | $219.7K | 0.00% | +2,664+22.0% | Added |
| American Century Companies Inc | 16,271 | $242.1K | 0.00% | +16,271 | New |
| Morgan Stanley | 25,126 | $373.9K | 0.00% | +6,792+37.0% | Added |
| Two Sigma Investments, LP | 25,749 | $383.1K | 0.00% | +25,749 | New |
| Schonfeld Strategic Advisors LLC | 29,097 | $433.0K | 0.00% | +155+0.5% | Added |
| Charles Schwab Investment Management Inc | 31,369 | $466.8K | 0.00% | −34−0.1% | Reduced |
| Citadel Advisors LLC | 31,418 | $467.5K | 0.00% | +533+1.7% | Added |
| Lion Point Capital, LP | 31,570 | $469.8K | 2.43% | +4,432+16.3% | Added |
| State Street Corp | 33,901 | $504.4K | 0.00% | +4,170+14.0% | Added |
| 683 Capital Management, LLC | 52,314 | $778.4K | 0.06% | +52,314 | New |
| Geode Capital Management, LLC | 86,142 | $1.28M | 0.00% | +1,160+1.4% | Added |
| Vontobel Holding Ltd. | 103,234 | $1.54M | 0.01% | +4,723+4.8% | Added |
| BlackRock, Inc. | 103,621 | $1.54M | 0.00% | +1,561+1.5% | Added |
| Marshall Wace, LLP | 120,177 | $1.79M | 0.00% | −5,423−4.3% | Reduced |
| Susquehanna International Group, LLP | 179,929 | $2.68M | 0.00% | +179,929 | New |
| Vanguard Group Inc | 324,214 | $4.82M | 0.00% | +12,325+4.0% | Added |
| Flagship Pioneering Inc. | 1,155,850 | $17.2M | 5.32% | 00.0% | Unchanged |
| J. Goldman & Co LP | 0 | $0 | 0.00% | −27,000−100.0% | Sold out |
| Citigroup Inc | 0 | $0 | 0.00% | −2,621−100.0% | Sold out |
| JPMorgan Chase & Co | 0 | $0 | 0.00% | −65−100.0% | Sold out |
| US Bancorp | 0 | $0 | 0.00% | −12−100.0% | Sold out |
| Federation des caisses Desjardins du Quebec | 0 | $0 | 0.00% | −3−100.0% | Sold out |