Security record
YMAB
name pending profile ingest
13Tracked holders
0Δ holders
7.81MShares held
$35.24MReported 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 2025 | 13 | 0 | 7.81M | $35.24M | +1 | −1 |
| Q1 2025 | 10 | -2 | 3.61M | $15.98M | — | −2 |
| Q4 2024 | 12 | 0 | 3.44M | $26.96M | — | — |
| Q3 2024 | 11 | +1 | 2.34M | $30.77M | +1 | — |
| Q2 2024 | 10 | — | 2.99M | $36.16M | — | — |
Who holds it · Q2 2025
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | BlackRock ✦ (passive) | 2.75M | — | $12.39M | 0.0% | n/c | 1 | SEC ↗ |
| 2 | BlackRock ✦ (passive) | 2.75M | — | $12.39M | 0.0% | n/c | 1 | SEC ↗ |
| 3 | BlackRock ✦ (passive) | 2.75M | — | $12.39M | 0.0% | n/c | 1 | SEC ↗ |
| 4 | BlackRock ✦ (passive) | 2.75M | — | $12.39M | 0.0% | n/c | 1 | SEC ↗ |
| 5 | BlackRock ✦ (passive) | 2.75M | — | $12.39M | 0.0% | n/c | 1 | SEC ↗ |
| 6 | BlackRock ✦ (passive) | 2.75M | — | $12.39M | 0.0% | n/c | 1 | SEC ↗ |
| 7 | BlackRock ✦ (passive) | 2.75M | — | $12.39M | 0.0% | n/c | 1 | SEC ↗ |
| 8 | BlackRock ✦ (passive) | 2.75M | — | $12.39M | 0.0% | n/c | 1 | SEC ↗ |
| 9 | BlackRock ✦ (passive) | 2.75M | — | $12.39M | 0.0% | n/c | 1 | SEC ↗ |
| 10 | BlackRock ✦ (passive) | 2.75M | — | $12.39M | 0.0% | n/c | 1 | SEC ↗ |
| 11 | The Vanguard Group ✦ (passive) | 1.94M | — | $8.76M | 0.0% | n/c | 1 | SEC ↗ |
| 12 | The Vanguard Group ✦ (passive) | 1.94M | — | $8.76M | 0.0% | n/c | 1 | SEC ↗ |
| 13 | The Vanguard Group ✦ (passive) | 1.94M | — | $8.76M | 0.0% | n/c | 1 | SEC ↗ |
| 14 | Geode Capital Management ✦ (passive) | 848.46K | -0.1% | $3.83M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 15 | Geode Capital Management ✦ (passive) | 848.46K | -0.1% | $3.83M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 16 | State Street Global Advisors ✦ (passive) | 780.14K | -1.1% | $3.52M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 17 | D. E. Shaw & Co. ✦ | 516.86K | -6.0% | $2.33M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 18 | D. E. Shaw & Co. ✦ | 516.86K | -6.0% | $2.33M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 19 | AQR Capital Management ✦ | 252.14K | +53.0% | $1.14M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 20 | AQR Capital Management ✦ | 252.14K | +53.0% | $1.14M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 21 | AQR Capital Management ✦ | 252.14K | +53.0% | $1.14M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 22 | AQR Capital Management ✦ | 252.14K | +53.0% | $1.14M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 23 | AQR Capital Management ✦ | 252.14K | +53.0% | $1.14M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 24 | Citadel Advisors ✦ | 207.64K | +34.9% | $936,466 | 0.0% | ▲ Add | 5 | SEC ↗ |
| 25 | Citadel Advisors ✦ | 207.64K | +34.9% | $936,466 | 0.0% | ▲ Add | 5 | SEC ↗ |
| 26 | Renaissance Technologies ✦ | 164.10K | -36.1% | $740,091 | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 27 | Millennium Management ✦ | 139.96K | -70.0% | $631,197 | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 28 | Two Sigma Investments ✦ | 125.30K | -19.1% | $565,094 | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 29 | Marshall Wace ✦ | 40.18K | New | $181,216 | 0.0% | New | 1 | SEC ↗ |
| 30 | Fidelity (FMR) ✦ | 30.87K | — | $139,216 | 0.0% | n/c | 1 | SEC ↗ |
| 31 | Fidelity (FMR) ✦ | 30.87K | — | $139,216 | 0.0% | n/c | 1 | SEC ↗ |
| 32 | T. Rowe Price ✦ | 17.21K | 0.0% | $78,000 | 0.0% | Held | 5 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.
New buyers
| Marshall Wace | $181,216 | 0.0% |
Exited
| Wellington Management | $903,950 | was 0.0% |
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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