Security record · archived quarter
GERN
Geron Corporation · Healthcare · Biotechnology
14Tracked holders
+1Δ holders
162.89MShares held
$229.67MReported value
+1New positions
−0Exits
Momentum inputs (comparable managers):
holder breadth +7.7% ·
share flow -2.3% ·
net new positions +7.1%
— formula
Ownership fragmentation — more holders, smaller aggregate stake
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 | 91 | +1 | 281.46M | $360.40M | +7 | −6 |
| Q1 2026 | 93 | -3 | 271.64M | $404.62M | +7 | −10 |
| Q4 2025 | 95 | -3 | 246.07M | $324.82M | — | −3 |
| Q3 2025 | 17 | 0 | 193.54M | $265.15M | +2 | −2 |
| Q2 2025 | 14 | +1 | 162.89M | $229.67M | +1 | — |
| Q1 2025 | 10 | -1 | 76.28M | $121.30M | — | −1 |
| Q4 2024 | 11 | +1 | 96.17M | $340.44M | +2 | −1 |
| Q3 2024 | 9 | 0 | 71.98M | $326.79M | +2 | −2 |
| Q2 2024 | 9 | — | 67.08M | $284.41M | — | — |
Who holds it · Q2 2025
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | BlackRock ✦ (passive) | 50.02M | — | $70.53M | 0.0% | n/c | 1 | SEC ↗ |
| 2 | BlackRock ✦ (passive) | 50.02M | — | $70.53M | 0.0% | n/c | 1 | SEC ↗ |
| 3 | BlackRock ✦ (passive) | 50.02M | — | $70.53M | 0.0% | n/c | 1 | SEC ↗ |
| 4 | BlackRock ✦ (passive) | 50.02M | — | $70.53M | 0.0% | n/c | 1 | SEC ↗ |
| 5 | BlackRock ✦ (passive) | 50.02M | — | $70.53M | 0.0% | n/c | 1 | SEC ↗ |
| 6 | BlackRock ✦ (passive) | 50.02M | — | $70.53M | 0.0% | n/c | 1 | SEC ↗ |
| 7 | BlackRock ✦ (passive) | 50.02M | — | $70.53M | 0.0% | n/c | 1 | SEC ↗ |
| 8 | BlackRock ✦ (passive) | 50.02M | — | $70.53M | 0.0% | n/c | 1 | SEC ↗ |
| 9 | BlackRock ✦ (passive) | 50.02M | — | $70.53M | 0.0% | n/c | 1 | SEC ↗ |
| 10 | BlackRock ✦ (passive) | 50.02M | — | $70.53M | 0.0% | n/c | 1 | SEC ↗ |
| 11 | BlackRock ✦ (passive) | 50.02M | — | $70.53M | 0.0% | n/c | 1 | SEC ↗ |
| 12 | BlackRock ✦ (passive) | 50.02M | — | $70.53M | 0.0% | n/c | 1 | SEC ↗ |
| 13 | BlackRock ✦ (passive) | 50.02M | — | $70.53M | 0.0% | n/c | 1 | SEC ↗ |
| 14 | The Vanguard Group ✦ (passive) | 35.61M | — | $50.22M | 0.0% | n/c | 1 | SEC ↗ |
| 15 | The Vanguard Group ✦ (passive) | 35.61M | — | $50.22M | 0.0% | n/c | 1 | SEC ↗ |
| 16 | The Vanguard Group ✦ (passive) | 35.61M | — | $50.22M | 0.0% | n/c | 1 | SEC ↗ |
| 17 | The Vanguard Group ✦ (passive) | 35.61M | — | $50.22M | 0.0% | n/c | 1 | SEC ↗ |
| 18 | The Vanguard Group ✦ (passive) | 35.61M | — | $50.22M | 0.0% | n/c | 1 | SEC ↗ |
| 19 | State Street Global Advisors ✦ (passive) | 23.63M | -1.2% | $33.32M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 20 | Geode Capital Management ✦ (passive) | 14.15M | +4.3% | $19.96M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 21 | Geode Capital Management ✦ (passive) | 14.15M | +4.3% | $19.96M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 22 | Citadel Advisors ✦ | 12.04M | +80.6% | $16.97M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 23 | Citadel Advisors ✦ | 12.04M | +80.6% | $16.97M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 24 | Point72 Asset Management ✦ | 9.61M | +34.8% | $13.54M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 25 | Millennium Management ✦ | 6.05M | -44.0% | $8.53M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 26 | Renaissance Technologies ✦ | 5.00M | -10.8% | $7.05M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 27 | Fidelity (FMR) ✦ | 4.84M | — | $6.82M | 0.0% | n/c | 1 | SEC ↗ |
| 28 | Fidelity (FMR) ✦ | 4.84M | — | $6.82M | 0.0% | n/c | 1 | SEC ↗ |
| 29 | Fidelity (FMR) ✦ | 4.84M | — | $6.82M | 0.0% | n/c | 1 | SEC ↗ |
| 30 | Marshall Wace ✦ | 944.79K | -81.6% | $1.33M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 31 | Marshall Wace ✦ | 944.79K | -81.6% | $1.33M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 32 | T. Rowe Price ✦ | 498.44K | +15.0% | $703,000 | 0.0% | ▲ Add | 5 | SEC ↗ |
| 33 | Wellington Management ✦ | 249.49K | -91.6% | $351,780 | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 34 | Wellington Management ✦ | 249.49K | -91.6% | $351,780 | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 35 | Wellington Management ✦ | 249.49K | -91.6% | $351,780 | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 36 | Wellington Management ✦ | 249.49K | -91.6% | $351,780 | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 37 | AQR Capital Management ✦ | 207.99K | +339.6% | $293,270 | 0.0% | ▲ Add | 5 | SEC ↗ |
| 38 | AQR Capital Management ✦ | 207.99K | +339.6% | $293,270 | 0.0% | ▲ Add | 5 | SEC ↗ |
| 39 | AQR Capital Management ✦ | 207.99K | +339.6% | $293,270 | 0.0% | ▲ Add | 5 | SEC ↗ |
| 40 | AQR Capital Management ✦ | 207.99K | +339.6% | $293,270 | 0.0% | ▲ Add | 5 | SEC ↗ |
| 41 | Gotham Asset Management ✦ | 38.16K | New | $53,807 | 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
| Gotham Asset Management | $53,807 | 0.0% |
Exited
| No tracked exits this quarter. |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 253 holders, 492.17M shares, $730.64M 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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