Security record · archived quarter
MRUS
Merus N.V. · Healthcare · Biotechnology
19Tracked holders
+1Δ holders
12.61MShares held
$1.19BReported value
+1New positions
−0Exits
Momentum inputs (comparable managers):
holder breadth +5.6% ·
share flow -30.0% ·
net new positions +5.3%
— formula
Ownership fragmentation — more holders, smaller aggregate stake
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q3 2025
Ownership over time
Who holds it · Q3 2025
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | Fidelity (FMR) ✦ | 2.81M | -62.5% | $264.65M | 0.0% | ▼ Trim | 2 | SEC ↗ ×4 |
| 2 | BlackRock ✦ (passive) | 2.17M | +106.7% | $204.50M | 0.0% | ▲ Add | 2 | SEC ↗ ×15 |
| 3 | JPMorgan Chase ✦ | 1.51M | — | $142.36M | 0.0% | n/c | 1 | SEC ↗ ×8 |
| 4 | Goldman Sachs Group ✦ | 1.20M | — | $112.55M | 0.0% | n/c | 1 | SEC ↗ ×2 |
| 5 | T. Rowe Price ✦ | 1.09M | -51.9% | $102.36M | 0.0% | ▼ Trim | 6 | SEC ↗ |
| 6 | Millennium Management ✦ | 699.03K | +4325.4% | $65.81M | 0.1% | ▲ Add | 6 | SEC ↗ |
| 7 | Citadel Advisors ✦ | 614.54K | +83.1% | $57.86M | 0.0% | ▲ Add | 6 | SEC ↗ ×2 |
| 8 | Adage Capital Partners ✦ | 600.00K | -28.0% | $56.49M | 0.1% | ▼ Trim | 2 | SEC ↗ |
| 9 | Wellington Management ✦ | 459.09K | -87.7% | $43.22M | 0.0% | ▼ Trim | 6 | SEC ↗ ×8 |
| 10 | Soros Fund Management ✦ | 405.00K | New | $38.13M | 0.9% | New | 1 | SEC ↗ |
| 11 | The Vanguard Group ✦ (passive) | 282.88K | +6.6% | $26.63M | 0.0% | ▲ Add | 2 | SEC ↗ ×4 |
| 12 | Point72 Asset Management ✦ | 254.75K | +49.2% | $23.98M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 13 | State Street Global Advisors ✦ (passive) | 247.30K | +2.6% | $23.28M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 14 | Morgan Stanley ✦ | 88.19K | — | $8.30M | 0.0% | n/c | 1 | SEC ↗ ×6 |
| 15 | Geode Capital Management ✦ (passive) | 68.00K | +11.6% | $6.39M | 0.0% | ▲ Add | 6 | SEC ↗ |
| 16 | Marshall Wace ✦ | 44.31K | +258.3% | $4.17M | 0.0% | ▲ Add | 6 | SEC ↗ ×3 |
| 17 | D. E. Shaw & Co. ✦ | 39.18K | -73.5% | $3.69M | 0.0% | ▼ Trim | 6 | SEC ↗ |
| 18 | AQR Capital Management ✦ | 13.46K | +0.5% | $1.27M | 0.0% | ▲ Add | 6 | SEC ↗ ×4 |
| 19 | Two Sigma Investments ✦ | 12.54K | -89.5% | $1.18M | 0.0% | ▼ Trim | 6 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.
New buyers
| Soros Fund Management | $38.13M | 0.9% |
Exited
| No tracked exits this quarter. |
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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