Synlogic, Inc.
SYBX- Exchange
- OTC
- Industry
- Pharmaceutical Preparations
- SEC CIK
- 0001527599
No open-market purchases or sales by Synlogic, Inc. insiders were filed in the last 90 days; 1 institution reported holding it in 13F filings for Q2 2026, worth $16.7K in total; no superinvestor holds it.
13F holders, Q1 2026
Institutional positions in Synlogic, Inc. as of Mar 31, 2026. 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
- 2
- −22 vs. Q4 2025
- Shares held
- 23.8K
- −6.66M (−99.6%) vs. Q4 2025
- Total value
- $14.5K
- −$7.47M (−99.8%) vs. Q4 2025
- New holders
- 0
- 0 more added
- Sold out
- 22
- 1 more reduced
1 institution that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting SYBX 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 | 1 | $16.7K |
| Q1 2026 | 2 | $14.5K |
| Q4 2025 | 25 | $7.71M |
| Q3 2025 | 23 | $11.1M |
| Q2 2025 | 19 | $8.60M |
| Q1 2025 | 18 | $8.41M |
| Q4 2024 | 18 | $9.46M |
| Q3 2024 | 17 | $10.2M |
| Q2 2024 | 17 | $10.4M |
| Q1 2024 | 17 | $12.4M |
| Q4 2023 | 24 | $18.2M |
| Q3 2023 | 28 | $7.34M |
| Q2 2023 | 45 | $13.9M |
| Q1 2023 | 51 | $21.9M |
| Q4 2022 | 51 | $25.8M |
| Q3 2022 | 52 | $37.8M |
| Q2 2022 | 51 | $46.9M |
| Q1 2022 | 51 | $102.4M |
| Q4 2021 | 62 | $104.8M |
| Q3 2021 | 69 | $133.9M |
| Q2 2021 | 60 | $114.6M |
| Q1 2021 | 55 | $65.8M |
Institutions, Q1 2026
Shares, value and share of portfolio for each institution holding Synlogic, Inc.; share changes are against Q4 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| DRW Securities, LLC | 23,763 | $14.5K | 0.00% | −600−2.5% | Reduced |
| Hilltop National Bank | 20 | $12 | 0.00% | 00.0% | Unchanged |
| Cable Car Capital LLC | 0 | $0 | 0.00% | −3,312,219−100.0% | Sold out |
| NEA Management Company, LLC | 0 | $0 | 0.00% | −2,922,772−100.0% | Sold out |
| Citadel Advisors LLC | 0 | $0 | 0.00% | −141,608−100.0% | Sold out |
| Renaissance Technologies LLC | 0 | $0 | 0.00% | −85,627−100.0% | Sold out |
| Geode Capital Management, LLC | 0 | $0 | 0.00% | −71,645−100.0% | Sold out |
| Ikarian Capital, LLC | 0 | $0 | 0.00% | −19,966−100.0% | Sold out |
| BlackRock, Inc. | 0 | $0 | 0.00% | −19,757−100.0% | Sold out |
| Northern Trust Corp | 0 | $0 | 0.00% | −19,469−100.0% | Sold out |
| Jane Street Group, LLC | 0 | $0 | 0.00% | −14,998−100.0% | Sold out |
| XTX Topco Ltd | 0 | $0 | 0.00% | −14,398−100.0% | Sold out |
| Susquehanna International Group, LLP | 0 | $0 | 0.00% | −11,623−100.0% | Sold out |
| State Street Corp | 0 | $0 | 0.00% | −10,176−100.0% | Sold out |
| FMR LLC | 0 | $0 | 0.00% | −5,323−100.0% | Sold out |
| UBS Group AG | 0 | $0 | 0.00% | −2,531−100.0% | Sold out |
| Morgan Stanley | 0 | $0 | 0.00% | −1,095−100.0% | Sold out |
| Flagship Harbor Advisors, LLC | 0 | $0 | 0.00% | −1,033−100.0% | Sold out |
| SBI Securities Co., Ltd. | 0 | $0 | 0.00% | −103−100.0% | Sold out |
| Bank of America Corp | 0 | $0 | 0.00% | −66−100.0% | Sold out |
| BNP Paribas Arbitrage, SA | 0 | $0 | 0.00% | −24−100.0% | Sold out |
| JPMorgan Chase & Co | 0 | $0 | 0.00% | −1−100.0% | Sold out |
| Danske Bank A/S | 0 | $0 | 0.00% | −1−100.0% | Sold out |
| Citigroup Inc | 0 | $0 | 0.00% | −1−100.0% | Sold out |
| Vanguard Group Inc | – | – | – | – | Not filed |