SYBX — SYNLOGIC INC
Reported value held$1.30M
Funds holding (latest)22
Sector—
SYBX (SYNLOGIC INC) is tracked on HoldingsHub across five years of quarterly 13F filings. 22 funds have reported positions historically, with the sum of their latest reported stakes valued at $1.30M. No fund in our coverage reported a position in the latest filing period, which typically means the stock has fallen out of the tracked funds' portfolios rather than that it cannot be bought.
All figures on this page are computed from SEC Form 13F quarterly filings. 13F filers disclose long positions of $100,000 or more within 45 days of quarter end; short positions, options overlays and intra-quarter trades are not included, so treat the numbers as a quarterly snapshot of institutional ownership rather than real-time positioning.
Q4 2025 — 12 funds
| Fund | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|
| Vanguard Group history | 201.06K | $225.19K | 0.00% | Add |
| Citadel Advisors history | 141.61K | $158.60K | 0.00% | Add |
| Renaissance Technologies history | 85.63K | $95.90K | 0.00% | Add |
| Geode Capital Management history | 71.64K | $80.25K | 0.00% | Add |
| BlackRock Inc history | 19.76K | $22.13K | 0.00% | Hold |
| Northern Trust Corp history | 19.47K | $21.80K | 0.00% | Hold |
| Fidelity Management & Research (FMR) history | 5.32K | $5.96K | 0.00% | Hold |
| UBS Group AG history | 2.53K | $2.83K | 0.00% | New |
| Morgan Stanley history | 1.09K | $1.23K | 0.00% | Hold |
| Bank of America Corp history | 66 | $73 | 0.00% | Add |
| JPMorgan Chase & Co history | 1 | $1 | 0.00% | Hold |
| Citigroup Inc history | 1 | $1 | 0.00% | Hold |
Q3 2025 — 12 funds
| Fund | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|
| Vanguard Group history | 196.46K | $332.02K | 0.00% | Add |
| Geode Capital Management history | 67.67K | $114.36K | 0.00% | Add |
| Renaissance Technologies history | 39.51K | $65.90K | 0.00% | Add |
| Citadel Advisors history | 29.01K | $49.03K | 0.00% | New |
| BlackRock Inc history | 19.76K | $32.95K | 0.00% | Hold |
| Northern Trust Corp history | 19.47K | $32.47K | 0.00% | New |
| Fidelity Management & Research (FMR) history | 5.32K | $9.00K | 0.00% | Reduce |
| Morgan Stanley history | 1.09K | $1.83K | 0.00% | Reduce |
| Bank of America Corp history | 64 | $107 | 0.00% | Reduce |
| Wells Fargo & Co history | 5 | $8 | 0.00% | New |
| JPMorgan Chase & Co history | 1 | $2 | 0.00% | Hold |
| Citigroup Inc history | 1 | $2 | 0.00% | New |
Q2 2025 — 8 funds
| Fund | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|
| Vanguard Group history | 183.00K | $232.41K | 0.00% | Hold |
| Fidelity Management & Research (FMR) history | 166.00K | $210.82K | 0.00% | Hold |
| Geode Capital Management history | 66.24K | $84.13K | 0.00% | Hold |
| Renaissance Technologies history | 23.81K | $30.24K | 0.00% | Add |
| BlackRock Inc history | 19.76K | $25.09K | 0.00% | Hold |
| Morgan Stanley history | 1.12K | $1.43K | 0.00% | Reduce |
| Bank of America Corp history | 69 | $87 | 0.00% | Add |
| JPMorgan Chase & Co history | 1 | $1 | 0.00% | Reduce |
Q1 2025 — 9 funds
| Fund | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|
| Vanguard Group history | 183.00K | $226.92K | 0.00% | Hold |
| Fidelity Management & Research (FMR) history | 166.50K | $206.46K | 0.00% | Hold |
| Geode Capital Management history | 66.24K | $82.14K | 0.00% | Reduce |
| Renaissance Technologies history | 23.51K | $29.15K | 0.00% | Add |
| BlackRock Inc history | 19.76K | $24.50K | 0.00% | Hold |
| Citadel Advisors history | 17.52K | $21.73K | 0.00% | New |
| Morgan Stanley history | 2.12K | $2.63K | 0.00% | Hold |
| Bank of America Corp history | 63 | $78 | 0.00% | Add |
| JPMorgan Chase & Co history | 7 | $8 | 0.00% | Reduce |
Q4 2024 — 8 funds
| Fund | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|
| Vanguard Group history | 183.00K | $250.71K | 0.00% | Hold |
| Fidelity Management & Research (FMR) history | 166.72K | $228.41K | 0.00% | Hold |
| Geode Capital Management history | 68.44K | $93.78K | 0.00% | Add |
| Renaissance Technologies history | 22.31K | $31.23K | 0.00% | Reduce |
| BlackRock Inc history | 19.76K | $27.66K | 0.00% | Hold |
| Morgan Stanley history | 2.12K | $2.98K | 0.00% | Hold |
| Bank of America Corp history | 61 | $85 | 0.00% | Hold |
| JPMorgan Chase & Co history | 8 | $11 | 0.00% | Hold |
Q3 2024 — 9 funds
| Fund | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|
| Vanguard Group history | 183.00K | $272.67K | 0.00% | Hold |
| Fidelity Management & Research (FMR) history | 166.72K | $248.42K | 0.00% | Reduce |
| Renaissance Technologies history | 71.93K | $107.17K | 0.00% | Reduce |
| Geode Capital Management history | 64.23K | $95.72K | 0.00% | Add |
| BlackRock Inc history | 19.76K | $29.44K | 0.00% | New |
| Citadel Advisors history | 16.45K | $24.51K | 0.00% | Reduce |
| Morgan Stanley history | 2.12K | $3.17K | 0.00% | Hold |
| Bank of America Corp history | 61 | $91 | 0.00% | Reduce |
| JPMorgan Chase & Co history | 8 | $11 | 0.00% | Hold |
New Positions (latest)
No fund opened a new position this quarter.
Fully Exited (vs previous quarter)
No tracked fund fully exited this quarter.
Fund Position History — shares by quarter (top 20 funds)
| Fund | Q4 2025 | Q3 2025 | Q2 2025 | Q1 2025 | Q4 2024 | Q3 2024 | Q2 2024 | Q1 2024 | Q4 2023 | Q3 2023 | Q2 2023 | Q1 2023 | Q4 2022 | Q3 2022 | Q2 2022 | Q1 2022 | Q4 2021 | Q3 2021 | Q2 2021 | Q1 2021 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Vanguard Group | 201.06K | 196.46K | 183.00K | 183.00K | 183.00K | 183.00K | 183.00K | 183.00K | 188.43K | 149.57K | 2.24M | 2.24M | 2.24M | 2.24M | 2.24M | 2.24M | 2.25M | 2.22M | 1.73M | 839.36K |
| Citadel Advisors | 141.61K | 29.01K | — | 17.52K | — | 16.45K | 28.85K | 21.17K | 10.86K | — | — | — | — | 15.00K | — | — | 11.29K | 12.03K | — | — |
| Renaissance Technologies | 85.63K | 39.51K | 23.81K | 23.51K | 22.31K | 71.93K | 100.53K | 118.44K | 54.63K | — | 214.30K | 91.90K | 96.40K | 115.60K | 55.00K | 51.30K | 54.70K | 188.67K | — | — |
| Geode Capital Management | 71.64K | 67.67K | 66.24K | 66.24K | 68.44K | 64.23K | 59.59K | 47.60K | 44.42K | 30.33K | 400.01K | 400.01K | 400.01K | 393.99K | 393.99K | 379.57K | 328.99K | 308.51K | — | — |
| BlackRock Inc | 19.76K | 19.76K | 19.76K | 19.76K | 19.76K | 19.76K | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Northern Trust Corp | 19.47K | 19.47K | — | — | — | — | — | — | — | — | 93.86K | 93.86K | 93.86K | 93.86K | 93.86K | 93.86K | 77.16K | 66.94K | — | — |
| Fidelity Management & Research (FMR) | 5.32K | 5.32K | 166.00K | 166.50K | 166.72K | 166.72K | 230.21K | 230.21K | 258.64K | 646.85K | 10.14M | 10.58M | 10.58M | 10.53M | 10.54M | 10.53M | 10.46M | 10.11M | — | — |
| UBS Group AG | 2.53K | — | — | — | — | — | 13.23K | — | — | — | — | 8.80K | — | — | — | 35.14K | — | 3.91K | — | — |
| Morgan Stanley | 1.09K | 1.09K | 1.12K | 2.12K | 2.12K | 2.12K | 2.12K | 2.12K | 2.12K | 1.63K | 18.90K | 679.50K | 680.27K | 679.65K | 30.89K | 36.53K | 49.90K | 76.16K | — | — |
| Bank of America Corp | 66 | 64 | 69 | 63 | 61 | 61 | 63 | — | 4 | — | — | — | 116 | — | — | — | 10.87K | 1.42K | — | — |
| JPMorgan Chase & Co | 1 | 1 | 1 | 7 | 8 | 8 | 8 | 12 | 8 | 6 | 19 | 439 | 468 | 19 | 19 | 19 | 19 | 19 | — | — |
| Citigroup Inc | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Wells Fargo & Co | — | 5 | — | — | — | — | — | 40 | 53 | 36 | 524 | 522 | 317 | 308 | 348 | 318 | 316 | 215 | — | — |
| Goldman Sachs Group | — | — | — | — | — | — | — | — | — | 11.01K | — | — | — | — | 20.00K | — | — | — | — | — |
| Two Sigma Investments | — | — | — | — | — | — | — | — | — | — | 74.35K | 74.35K | 81.95K | 94.00K | 97.31K | 130.06K | 346.11K | 447.65K | — | — |
| BNY Mellon | — | — | — | — | — | — | — | — | — | — | — | 67.72K | 67.72K | 68.18K | 68.18K | 68.58K | 68.58K | 68.58K | — | — |
| Franklin Resources | — | — | — | — | — | — | — | — | — | — | 78.00K | 78.00K | 78.00K | 78.00K | 77.12K | 102.10K | 101.44K | 101.70K | — | — |
| Millennium Management | — | — | — | — | — | — | — | — | — | — | 19.02K | 58.75K | 95.43K | 22.01K | 125.13K | 77.97K | 293.86K | 101.83K | — | — |
| PNC Financial Services | — | — | — | — | — | — | — | — | — | 466 | — | — | — | — | — | — | — | — | — | — |
| Prudential Financial | — | — | — | — | — | — | — | — | — | — | — | — | 30.20K | — | — | — | — | — | — | — |
▲ Bought Low (fund opened/added, stock rose ≥5% next quarter) ▼ Sold High (fund reduced, stock fell ≥5% next quarter)
Drag / scroll to zoom · Default shows the most recent year · Annotations come from quarterly fund actions in 13F filings · Hover a marker for details