MASIMO CORP COM is a security (CUSIP 574795100) tracked across SEC portfolio filings. 320 institutional managers reported $8.5B on Form 13F as of 2026-06-30; 42 registered fund positions totaling $546.5M via N-PORT as of 2026-05-31.
Showing 15 of 320 managers by value.
| Manager | Location | Value | Shares |
|---|---|---|---|
| BlackRock, Inc. | New York, NY | $826.1M | 4,644,578 |
| Politan Capital Management LP | New York, NY | $816.4M | 4,589,648 |
| VANGUARD GROUP INC | Valley Forge, PA | $565.6M | 4,348,786 |
| Pentwater Capital Management LP | Naples, FL | $564.9M | 3,176,000 |
| BARCLAYS PLC | LONDON, X0 | $488.1M | 2,743,985 |
| HBK INVESTMENTS L P | DALLAS, TX | $458.2M | 2,576,109 |
| FMR LLC | BOSTON, MA | $258.1M | 1,450,823 |
| STATE STREET CORP | BOSTON, MA | $255.7M | 1,437,724 |
| MILLENNIUM MANAGEMENT LLC | NEW YORK, NY | $227.2M | 988,853 |
| GOLDMAN SACHS GROUP INC | NEW YORK, NY | $175.1M | 984,192 |
| GEODE CAPITAL MANAGEMENT, LLC | BOSTON, MA | $170.2M | 956,736 |
| Balyasny Asset Management L.P. | Chicago, IL | $152.3M | 770,986 |
| AQR CAPITAL MANAGEMENT LLC | Greenwich, CT | $147.4M | 831,966 |
| MORGAN STANLEY | NEW YORK, NY | $133.8M | 752,417 |
| JPMORGAN CHASE & CO | NEW YORK, NY | $101.5M | 572,645 |
Showing 15 of 42 fund positions by value.
| Fund | Registrant | Value | % of fund |
|---|---|---|---|
| State Street SPDR S&P MidCap 400SM ETF Trust | SPDR S&P MIDCAP 400 ETF TRUST | $244.8M | 101.10% |
| VANGUARD EXTENDED MARKET INDEX FUND | VANGUARD INDEX FUNDS | $90.7M | 11.13% |
| SMALLCAP World Fund Inc | SMALLCAP World Fund Inc | $56.4M | 6.96% |
| Fidelity Series Large Cap Stock Fund | Fidelity Hastings Street Trust | $32.2M | 13.00% |
| THE ARBITRAGE FUND | ARBITRAGE FUNDS | $27.0M | 319.85% |
| The Merger Fund | Merger Fund | $20.9M | 84.88% |
| Baird Small/Mid Cap Growth Fund | Baird Funds Inc | $9.4M | 1217.76% |
| Fidelity SAI Merger Arbitrage Fund | Fidelity Greenwood Street Trust | $7.1M | 124.97% |
| Bridge Builder Tax Managed Small/Mid Cap Fund | Bridge Builder Trust | $7.0M | 22.99% |
| Fidelity Advisor Capital Development Fund | Fidelity Destiny Portfolios | $6.0M | 10.57% |
| Columbia Mid Cap Index Fund | COLUMBIA FUNDS SERIES TRUST | $5.8M | 22.90% |
| Large Cap Index Master Portfolio | Master Investment Portfolio | $4.6M | 1.28% |
| VANGUARD BALANCED INDEX FUND | VANGUARD VALLEY FORGE FUNDS | $4.6M | 0.78% |
| GDL Fund | GDL Fund | $4.6M | 395.79% |
| NYLI Merger Arbitrage ETF | New York Life Investments ETF Trust | $4.5M | 178.96% |