Security record · archived quarter
GOSS
Gossamer Bio, Inc. · Healthcare · Biotechnology
18Tracked holders
+3Δ holders
53.94MShares held
$141.87MReported value
+3New positions
−0Exits
Momentum inputs (comparable managers):
holder breadth +20.0% ·
share flow +16.8% ·
net new positions +16.7%
— formula
Broad accumulation — rising shares across more holders
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q3 2025
Ownership over time
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q2 2026 | 61 | -10 | 149.99M | $24.69M | +3 | −13 |
| Q1 2026 | 73 | -3 | 96.26M | $32.15M | +6 | −9 |
| Q4 2025 | 76 | -1 | 88.23M | $273.50M | — | −1 |
| Q3 2025 | 18 | +3 | 53.94M | $141.87M | +3 | — |
| Q2 2025 | 12 | 0 | 44.92M | $55.25M | +1 | −1 |
| Q1 2025 | 9 | +1 | 11.42M | $12.56M | +1 | — |
| Q4 2024 | 8 | 0 | 11.95M | $10.80M | — | — |
| Q3 2024 | 7 | 0 | 18.68M | $18.44M | — | — |
| Q2 2024 | 7 | — | 23.16M | $20.86M | — | — |
Who holds it · Q3 2025
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | BlackRock ✦ (passive) | 13.85M | +14.0% | $36.42M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 2 | BlackRock ✦ (passive) | 13.85M | +14.0% | $36.42M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 3 | BlackRock ✦ (passive) | 13.85M | +14.0% | $36.42M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 4 | BlackRock ✦ (passive) | 13.85M | +14.0% | $36.42M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 5 | BlackRock ✦ (passive) | 13.85M | +14.0% | $36.42M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 6 | BlackRock ✦ (passive) | 13.85M | +14.0% | $36.42M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 7 | BlackRock ✦ (passive) | 13.85M | +14.0% | $36.42M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 8 | The Vanguard Group ✦ (passive) | 12.01M | +5.2% | $31.59M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 9 | The Vanguard Group ✦ (passive) | 12.01M | +5.2% | $31.59M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 10 | The Vanguard Group ✦ (passive) | 12.01M | +5.2% | $31.59M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 11 | Geode Capital Management ✦ (passive) | 4.69M | +3.0% | $12.34M | 0.0% | ▲ Add | 6 | SEC ↗ |
| 12 | Geode Capital Management ✦ (passive) | 4.69M | +3.0% | $12.34M | 0.0% | ▲ Add | 6 | SEC ↗ |
| 13 | Fidelity (FMR) ✦ | 4.09M | -44.1% | $10.74M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 14 | Fidelity (FMR) ✦ | 4.09M | -44.1% | $10.74M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 15 | State Street Global Advisors ✦ (passive) | 3.88M | +56.5% | $10.21M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 16 | Millennium Management ✦ | 3.62M | +629.3% | $9.52M | 0.0% | ▲ Add | 6 | SEC ↗ |
| 17 | Renaissance Technologies ✦ | 2.98M | +9.1% | $7.84M | 0.0% | ▲ Add | 6 | SEC ↗ |
| 18 | Two Sigma Investments ✦ | 2.29M | +31.1% | $6.02M | 0.0% | ▲ Add | 6 | SEC ↗ |
| 19 | Citadel Advisors ✦ | 2.28M | +197.6% | $6.01M | 0.0% | ▲ Add | 6 | SEC ↗ |
| 20 | Citadel Advisors ✦ | 2.28M | +197.6% | $6.01M | 0.0% | ▲ Add | 6 | SEC ↗ |
| 21 | Adage Capital Partners ✦ | 726.80K | New | $1.91M | 0.0% | New | 1 | SEC ↗ |
| 22 | AQR Capital Management ✦ | 646.62K | New | $1.70M | 0.0% | New | 1 | SEC ↗ |
| 23 | AQR Capital Management ✦ | 646.62K | New | $1.70M | 0.0% | New | 1 | SEC ↗ |
| 24 | AQR Capital Management ✦ | 646.62K | New | $1.70M | 0.0% | New | 1 | SEC ↗ |
| 25 | AQR Capital Management ✦ | 646.62K | New | $1.70M | 0.0% | New | 1 | SEC ↗ |
| 26 | AQR Capital Management ✦ | 646.62K | New | $1.70M | 0.0% | New | 1 | SEC ↗ |
| 27 | Wellington Management ✦ | 641.72K | New | $1.69M | 0.0% | New | 1 | SEC ↗ |
| 28 | Wellington Management ✦ | 641.72K | New | $1.69M | 0.0% | New | 1 | SEC ↗ |
| 29 | Wellington Management ✦ | 641.72K | New | $1.69M | 0.0% | New | 1 | SEC ↗ |
| 30 | Arrowstreet Capital ✦ | 635.40K | -43.2% | $1.67M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 31 | Morgan Stanley ✦ | 566.42K | — | $1.49M | 0.0% | n/c | 1 | SEC ↗ |
| 32 | Morgan Stanley ✦ | 566.42K | — | $1.49M | 0.0% | n/c | 1 | SEC ↗ |
| 33 | Morgan Stanley ✦ | 566.42K | — | $1.49M | 0.0% | n/c | 1 | SEC ↗ |
| 34 | Morgan Stanley ✦ | 566.42K | — | $1.49M | 0.0% | n/c | 1 | SEC ↗ |
| 35 | Morgan Stanley ✦ | 566.42K | — | $1.49M | 0.0% | n/c | 1 | SEC ↗ |
| 36 | Morgan Stanley ✦ | 566.42K | — | $1.49M | 0.0% | n/c | 1 | SEC ↗ |
| 37 | JPMorgan Chase ✦ | 388.74K | — | $1.02M | 0.0% | n/c | 1 | SEC ↗ |
| 38 | JPMorgan Chase ✦ | 388.74K | — | $1.02M | 0.0% | n/c | 1 | SEC ↗ |
| 39 | JPMorgan Chase ✦ | 388.74K | — | $1.02M | 0.0% | n/c | 1 | SEC ↗ |
| 40 | JPMorgan Chase ✦ | 388.74K | — | $1.02M | 0.0% | n/c | 1 | SEC ↗ |
| 41 | JPMorgan Chase ✦ | 388.74K | — | $1.02M | 0.0% | n/c | 1 | SEC ↗ |
| 42 | JPMorgan Chase ✦ | 388.74K | — | $1.02M | 0.0% | n/c | 1 | SEC ↗ |
| 43 | JPMorgan Chase ✦ | 388.74K | — | $1.02M | 0.0% | n/c | 1 | SEC ↗ |
| 44 | JPMorgan Chase ✦ | 388.74K | — | $1.02M | 0.0% | n/c | 1 | SEC ↗ |
| 45 | Goldman Sachs Group ✦ | 299.58K | — | $787,900 | 0.0% | n/c | 1 | SEC ↗ |
| 46 | Goldman Sachs Group ✦ | 299.58K | — | $787,900 | 0.0% | n/c | 1 | SEC ↗ |
| 47 | D. E. Shaw & Co. ✦ | 248.82K | +338.0% | $654,391 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 48 | D. E. Shaw & Co. ✦ | 248.82K | +338.0% | $654,391 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 49 | T. Rowe Price ✦ | 100.66K | +5.6% | $265,000 | 0.0% | ▲ Add | 6 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.
New buyers
| Adage Capital Partners | $1.91M | 0.0% |
| AQR Capital Management | $1.70M | 0.0% |
| AQR Capital Management | $1.70M | 0.0% |
| AQR Capital Management | $1.70M | 0.0% |
| AQR Capital Management | $1.70M | 0.0% |
| AQR Capital Management | $1.70M | 0.0% |
| Wellington Management | $1.69M | 0.0% |
| Wellington Management | $1.69M | 0.0% |
| Wellington Management | $1.69M | 0.0% |
Exited
| No tracked exits this quarter. |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 1 holders, 2.17M shares, $845,282 reported. This is a different, older period than the tracked-universe figures above and the two are never mixed.
Frequently co-owned
What else this security's tracked holders most often hold — shared-ownership counts, not fundamental relationships.
Provenance: Ownership from parsed 13F common-stock positions (tracked universe, comparable sets for changes); insider rows from Forms 3/4/5; stakes from Schedules 13D/13G; every filing links to its original on SEC EDGAR.
Reporting period: Q3 2025 ·
Methodology ·
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