Security record · archived quarter
GERN
Geron Corporation · Healthcare · Biotechnology
9Tracked holders
—Δ holders
67.08MShares held
$284.41MReported value
+0New positions
−0Exits
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q2 2024
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 2024
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | Adage Capital Partners ✦ | 19.73M | — | $83.63M | 0.2% | n/c | 1 | SEC ↗ |
| 2 | Geode Capital Management ✦ (passive) | 12.84M | — | $54.44M | 0.0% | n/c | 1 | SEC ↗ |
| 3 | Geode Capital Management ✦ (passive) | 12.84M | — | $54.44M | 0.0% | n/c | 1 | SEC ↗ |
| 4 | Wellington Management ✦ | 12.09M | — | $51.27M | 0.0% | n/c | 1 | SEC ↗ |
| 5 | Wellington Management ✦ | 12.09M | — | $51.27M | 0.0% | n/c | 1 | SEC ↗ |
| 6 | Wellington Management ✦ | 12.09M | — | $51.27M | 0.0% | n/c | 1 | SEC ↗ |
| 7 | Wellington Management ✦ | 12.09M | — | $51.27M | 0.0% | n/c | 1 | SEC ↗ |
| 8 | Wellington Management ✦ | 12.09M | — | $51.27M | 0.0% | n/c | 1 | SEC ↗ |
| 9 | Wellington Management ✦ | 12.09M | — | $51.27M | 0.0% | n/c | 1 | SEC ↗ |
| 10 | T. Rowe Price ✦ | 11.28M | — | $47.82M | 0.0% | n/c | 1 | SEC ↗ |
| 11 | T. Rowe Price ✦ | 11.28M | — | $47.82M | 0.0% | n/c | 1 | SEC ↗ |
| 12 | Millennium Management ✦ | 7.65M | — | $32.44M | 0.0% | n/c | 1 | SEC ↗ |
| 13 | Citadel Advisors ✦ | 2.27M | — | $9.61M | 0.0% | n/c | 1 | SEC ↗ |
| 14 | Citadel Advisors ✦ | 2.27M | — | $9.61M | 0.0% | n/c | 1 | SEC ↗ |
| 15 | Renaissance Technologies ✦ | 781.72K | — | $3.31M | 0.0% | n/c | 1 | SEC ↗ |
| 16 | Two Sigma Investments ✦ | 404.62K | — | $1.72M | 0.0% | n/c | 1 | SEC ↗ |
| 17 | AQR Capital Management ✦ | 41.24K | — | $174,879 | 0.0% | n/c | 1 | SEC ↗ |
| 18 | AQR Capital Management ✦ | 41.24K | — | $174,879 | 0.0% | n/c | 1 | SEC ↗ |
| 19 | AQR Capital Management ✦ | 41.24K | — | $174,879 | 0.0% | n/c | 1 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.
New buyers
| No new tracked buyers this quarter. |
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 2024 ·
Methodology ·
Get this via the API