Masimo Corp Major Shareholders & Ownership History
| Major Shareholder Name | Reporting Date | Shares Held | Market Value | Change in Shares | Ownership |
|---|---|---|---|---|---|
| BLACKROCK, INC. | 05/13/2026 | 4.64 M | $826.13 M | -47.55% | 8.67% |
| POLITAN CAPITAL MANAGEMENT LP | 05/15/2026 | 4.59 M | $816.36 M | 0.00% | 8.56% |
| PENTWATER CAPITAL MANAGEMENT LP | 05/15/2026 | 3.18 M | $564.92 M | 100.00% | 5.93% |
| BARCLAYS PLC | 05/15/2026 | 2.74 M | $488.07 M | 4,601.99% | 5.12% |
| HBK INVESTMENTS L P | 05/15/2026 | 2.58 M | $458.21 M | 100.00% | 4.81% |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | 05/14/2026 | 2.34 M | $416.69 M | -12.05% | 4.37% |
| 05/15/2026 | 2.05 M | $364.64 M | 100.00% | 3.82% | |
| 05/08/2026 | 2.01 M | $356.96 M | 100.00% | 3.74% | |
| FMR LLC | 05/15/2026 | 1.45 M | $258.06 M | -81.55% | 2.71% |
| STATE STREET CORP | 05/15/2026 | 1.44 M | $255.73 M | 1.59% | 2.68% |
| MILLENNIUM MANAGEMENT LLC | 05/15/2026 | 988.85 K | $175.89 M | 426.08% | 1.84% |
| GOLDMAN SACHS GROUP INC | 05/15/2026 | 984.19 K | $175.06 M | 54.58% | 1.84% |
| GEODE CAPITAL MANAGEMENT, LLC | 05/15/2026 | 956.74 K | $170.21 M | 0.29% | 1.79% |
| AQR CAPITAL MANAGEMENT LLC | 05/15/2026 | 831.97 K | $147.40 M | -23.77% | 1.55% |
| BALYASNY ASSET MANAGEMENT L.P. | 05/15/2026 | 770.99 K | $137.14 M | 100.00% | 1.44% |
| MORGAN STANLEY | 05/15/2026 | 752.42 K | $133.83 M | -18.28% | 1.40% |
| JPMORGAN CHASE & CO | 05/13/2026 | 572.65 K | $101.54 M | 386.12% | 1.07% |
| CITIGROUP INC | 05/11/2026 | 533.39 K | $94.87 M | 339.98% | 1.00% |
| SG AMERICAS SECURITIES, LLC | 04/16/2026 | 522.82 K | $93.00 M | 3,082.32% | 0.98% |
| FIL LTD | 05/15/2026 | 482.00 K | $85.73 M | 100.00% | 0.90% |
| FIRST TRUST CAPITAL MANAGEMENT L.P. | 05/14/2026 | 479.40 K | $85.27 M | 100.00% | 0.89% |
| HSBC HOLDINGS PLC | 04/30/2026 | 473.43 K | $84.27 M | 100.00% | 0.88% |
| UBS GROUP AG | 05/05/2026 | 468.26 K | $83.29 M | -21.86% | 0.87% |
| ALLIANCEBERNSTEIN L.P. | 05/15/2026 | 455.35 K | $59.22 M | 739.78% | 0.85% |
| MAGNETAR FINANCIAL LLC | 05/13/2026 | 427.08 K | $75.96 M | 7,729.17% | 0.80% |
| AQR ARBITRAGE LLC | 05/15/2026 | 416.96 K | $73.87 M | 100.00% | 0.78% |
| NEUBERGER BERMAN GROUP LLC | 05/14/2026 | 403.31 K | $71.74 M | 7,956.51% | 0.75% |
| NORTHERN TRUST CORP | 05/14/2026 | 390.44 K | $69.45 M | 2.62% | 0.73% |
| SQUAREPOINT OPS LLC | 05/15/2026 | 389.36 K | $69.26 M | -33.30% | 0.73% |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 05/15/2026 | 386.90 K | $68.82 M | 6.91% | 0.72% |
| WALLEYE TRADING LLC | 05/11/2026 | 362.60 K | $64.50 M | 100.00% | 0.68% |
| CAPITAL RESEARCH GLOBAL INVESTORS | 05/13/2026 | 359.06 K | $63.87 M | -43.71% | 0.67% |
| GOTHAM ASSET MANAGEMENT, LLC | 05/15/2026 | 341.47 K | $60.74 M | -0.21% | 0.64% |
| WESTFIELD CAPITAL MANAGEMENT CO LP | 05/11/2026 | 341.23 K | $60.69 M | -77.58% | 0.64% |
| HUDSON BAY CAPITAL MANAGEMENT LP | 05/13/2026 | 330.68 K | $58.82 M | 100.00% | 0.62% |
| CI PRIVATE WEALTH, LLC | 05/15/2026 | 321.60 K | $57.20 M | -5.48% | 0.60% |
| FORT BAKER CAPITAL MANAGEMENT LP | 05/15/2026 | 312.72 K | $55.62 M | 100.00% | 0.58% |
| NEXPOINT ASSET MANAGEMENT, L.P. | 05/15/2026 | 310.13 K | $55.16 M | 100.00% | 0.58% |
| 05/15/2026 | 309.10 K | $54.98 M | 100.00% | 0.58% | |
| BANK OF NEW YORK MELLON CORP | 05/05/2026 | 306.40 K | $54.50 M | -0.68% | 0.57% |
| QUBE RESEARCH & TECHNOLOGIES LTD | 05/15/2026 | 291.48 K | $51.85 M | -0.70% | 0.54% |
| VANGUARD FIDUCIARY TRUST CO | 05/08/2026 | 289.87 K | $51.56 M | 100.00% | 0.54% |
| MILLENNIUM MANAGEMENT LLC | 05/15/2026 | 288.60 K | $51.33 M | 100.00% | 0.54% |
| CITADEL ADVISORS LLC | 05/15/2026 | 281.37 K | $50.05 M | 553.55% | 0.52% |
| WHITEBOX ADVISORS LLC | 05/15/2026 | 270.00 K | $48.03 M | 100.00% | 0.50% |
| HRT FINANCIAL LP | 05/14/2026 | 264.84 K | $47.11 M | 185.46% | 0.49% |
| NUANCE INVESTMENTS, LLC | 05/08/2026 | 244.70 K | $43.53 M | 100.00% | 0.46% |
| AMUNDI | 05/18/2026 | 243.14 K | $43.25 M | 454.36% | 0.45% |
| SLOTNIK CAPITAL, LLC | 05/15/2026 | 240.30 K | $42.74 M | 100.00% | 0.45% |
| RENAISSANCE TECHNOLOGIES LLC | 05/14/2026 | 239.50 K | $42.60 M | 299.83% | 0.45% |
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Masimo Corp institutional Ownership - FAQ's
During the previous two years, 682 institutional investors and hedge funds held shares of Masimo Corp. The most heavily invested institutionals were:
BlackRock, Inc.: 4.64 M
Politan Capital Management LP: 4.59 M
Pentwater Capital Management LP: 3.18 M
BARCLAYS PLC: 2.74 M
HBK INVESTMENTS L P: 2.58 M
MASSACHUSETTS FINANCIAL SERVICES CO /MA/: 2.34 M
99.76% of Masimo Corp stock is owned by institutional investors.
Institutional investors have bought a total of 76.54 M shares in the last 24 months. This purchase volume represents approximately $13.43 B in transactions.