MRSN
name pending profile ingest
Momentum inputs (comparable managers):
holder breadth +30.0% ·
share flow +30.0% ·
net new positions +20.0%
· formula
Broad accumulation: rising shares across more holders
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q3 2025
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | The Vanguard Group ✦ (passive) | 302.55K | New | $2.35M | 0.0% | New | 1 | SEC ↗ ×3 |
| 2 | BlackRock ✦ (passive) | 96.19K | New | $746,458 | 0.0% | New | 1 | SEC ↗ ×4 |
| 3 | Renaissance Technologies ✦ | 88.47K | New | $686,488 | 0.0% | New | 1 | SEC ↗ |
| 4 | Millennium Management ✦ | 77.99K | New | $605,195 | 0.0% | New | 1 | SEC ↗ |
| 5 | Morgan Stanley ✦ | 48.33K | n/a | $375,017 | 0.0% | n/c | 1 | SEC ↗ ×3 |
| 6 | AQR Capital Management ✦ | 46.72K | New | $362,547 | 0.0% | New | 1 | SEC ↗ ×4 |
| 7 | Geode Capital Management ✦ (passive) | 41.65K | New | $323,291 | 0.0% | New | 1 | SEC ↗ ×2 |
| 8 | Two Sigma Investments ✦ | 30.69K | New | $238,139 | 0.0% | New | 1 | SEC ↗ |
| 9 | State Street Global Advisors ✦ (passive) | 29.84K | New | $231,582 | 0.0% | New | 1 | SEC ↗ |
| 10 | JPMorgan Chase ✦ | 12.22K | n/a | $94,796 | 0.0% | n/c | 1 | SEC ↗ ×2 |
| 11 | Fidelity (FMR) ✦ | 4.86K | New | $37,745 | 0.0% | New | 1 | SEC ↗ ×2 |
“Their weight” = the position's share of that manager's reported 13F equity value: the conviction measure. ✦ = curated manager.
New buyers
| The Vanguard Group | $2.35M | 0.0% |
| BlackRock | $746,458 | 0.0% |
| Renaissance Technologies | $686,488 | 0.0% |
| Millennium Management | $605,195 | 0.0% |
| AQR Capital Management | $362,547 | 0.0% |
| Geode Capital Management | $323,291 | 0.0% |
| Two Sigma Investments | $238,139 | 0.0% |
| State Street Global Advisors | $231,582 | 0.0% |
| Fidelity (FMR) | $37,745 | 0.0% |
Exited
| Marshall Wace | $68,091 | was 0.0% |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 1 holders, 3 shares, $87 reported. This is a different, older period than the tracked-universe figures above and the two are never mixed.
What else this security's tracked holders most often hold: shared-ownership counts, not fundamental relationships.