Security record · archived quarter
GOSS
Gossamer Bio, Inc. · Healthcare · Biotechnology
12Tracked holders
0Δ holders
44.92MShares held
$55.25MReported value
+1New positions
−1Exits
Momentum inputs (comparable managers): holder breadth 0.0% · share flow +6.2% · net new positions 0.0% — formula
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q2 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 · Q2 2025
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | BlackRock ✦ (passive) | 12.14M | — | $14.94M | 0.0% | n/c | 1 | SEC ↗ |
| 2 | BlackRock ✦ (passive) | 12.14M | — | $14.94M | 0.0% | n/c | 1 | SEC ↗ |
| 3 | BlackRock ✦ (passive) | 12.14M | — | $14.94M | 0.0% | n/c | 1 | SEC ↗ |
| 4 | BlackRock ✦ (passive) | 12.14M | — | $14.94M | 0.0% | n/c | 1 | SEC ↗ |
| 5 | BlackRock ✦ (passive) | 12.14M | — | $14.94M | 0.0% | n/c | 1 | SEC ↗ |
| 6 | BlackRock ✦ (passive) | 12.14M | — | $14.94M | 0.0% | n/c | 1 | SEC ↗ |
| 7 | The Vanguard Group ✦ (passive) | 11.41M | — | $14.04M | 0.0% | n/c | 1 | SEC ↗ |
| 8 | The Vanguard Group ✦ (passive) | 11.41M | — | $14.04M | 0.0% | n/c | 1 | SEC ↗ |
| 9 | The Vanguard Group ✦ (passive) | 11.41M | — | $14.04M | 0.0% | n/c | 1 | SEC ↗ |
| 10 | Fidelity (FMR) ✦ | 7.32M | — | $9.00M | 0.0% | n/c | 1 | SEC ↗ |
| 11 | Fidelity (FMR) ✦ | 7.32M | — | $9.00M | 0.0% | n/c | 1 | SEC ↗ |
| 12 | Geode Capital Management ✦ (passive) | 4.56M | +100.5% | $5.60M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 13 | Geode Capital Management ✦ (passive) | 4.56M | +100.5% | $5.60M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 14 | Renaissance Technologies ✦ | 2.73M | +74.1% | $3.36M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 15 | State Street Global Advisors ✦ (passive) | 2.48M | +181.1% | $3.05M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 16 | Two Sigma Investments ✦ | 1.75M | +36.8% | $2.15M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 17 | Arrowstreet Capital ✦ | 1.12M | +39.1% | $1.38M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 18 | Citadel Advisors ✦ | 767.56K | +389.1% | $944,100 | 0.0% | ▲ Add | 5 | SEC ↗ |
| 19 | Citadel Advisors ✦ | 767.56K | +389.1% | $944,100 | 0.0% | ▲ Add | 5 | SEC ↗ |
| 20 | Millennium Management ✦ | 496.25K | -81.5% | $610,385 | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 21 | T. Rowe Price ✦ | 95.29K | +47.1% | $118,000 | 0.0% | ▲ Add | 5 | SEC ↗ |
| 22 | D. E. Shaw & Co. ✦ | 56.81K | New | $69,874 | 0.0% | New | 1 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.
New buyers
| D. E. Shaw & Co. | $69,874 | 0.0% |
Exited
| Marshall Wace | $1.89M | was 0.0% |
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: Q2 2025 ·
Methodology ·
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