Security record · archived quarter
MASI
Masimo Corporation · Healthcare · Medical - Devices
11Tracked holders
0Δ holders
1.97MShares held
$262.13MReported value
+2New positions
−2Exits
Momentum inputs (comparable managers): holder breadth 0.0% · share flow -30.0% · net new positions 0.0% — formula
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q3 2024
Ownership over time
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q1 2026 | 117 | -8 | 31.18M | $5.52B | +10 | −19 |
| Q4 2025 | 125 | +1 | 41.01M | $5.33B | +3 | −1 |
| Q3 2025 | 19 | -2 | 29.69M | $4.38B | +1 | −4 |
| Q2 2025 | 19 | +1 | 27.33M | $4.60B | +1 | — |
| Q1 2025 | 15 | +2 | 3.43M | $572.07M | +2 | — |
| Q4 2024 | 13 | +1 | 3.93M | $649.11M | +2 | −1 |
| Q3 2024 | 11 | 0 | 1.97M | $262.13M | +2 | −2 |
| Q2 2024 | 11 | — | 3.08M | $387.70M | — | — |
Who holds it · Q3 2024
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | Geode Capital Management ✦ (passive) | 792.89K | +1.5% | $105.74M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 2 | Geode Capital Management ✦ (passive) | 792.89K | +1.5% | $105.74M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 3 | Two Sigma Investments ✦ | 342.83K | +36.6% | $45.71M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 4 | Norges Bank ✦ (passive) | 255.39K | +424.5% | $34.05M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 5 | Citadel Advisors ✦ | 189.55K | -16.7% | $25.27M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 6 | Citadel Advisors ✦ | 189.55K | -16.7% | $25.27M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 7 | Gotham Asset Management ✦ | 153.49K | +90.0% | $20.46M | 0.2% | ▲ Add | 2 | SEC ↗ |
| 8 | GAMCO Investors ✦ | 84.50K | 0.0% | $11.27M | 0.1% | Held | 2 | SEC ↗ |
| 9 | T. Rowe Price ✦ | 69.72K | +2.1% | $9.30M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 10 | T. Rowe Price ✦ | 69.72K | +2.1% | $9.30M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 11 | Millennium Management ✦ | 29.25K | -96.1% | $3.90M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 12 | D. E. Shaw & Co. ✦ | 24.36K | New | $3.25M | 0.0% | New | 1 | SEC ↗ |
| 13 | AQR Capital Management ✦ | 16.22K | New | $2.16M | 0.0% | New | 1 | SEC ↗ |
| 14 | AQR Capital Management ✦ | 16.22K | New | $2.16M | 0.0% | New | 1 | SEC ↗ |
| 15 | Bridgewater Associates ✦ | 7.62K | -27.2% | $1.02M | 0.0% | ▼ Trim | 2 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.
New buyers
| D. E. Shaw & Co. | $3.25M | 0.0% |
| AQR Capital Management | $2.16M | 0.0% |
| AQR Capital Management | $2.16M | 0.0% |
Exited
| Point72 Asset Management | $85.35M | was 0.3% |
| Marshall Wace | $11.94M | was 0.0% |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 440 holders, 53.43M shares, $9.20B 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: Q3 2024 ·
Methodology ·
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