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Masimo (MASI)
NASDAQ
$178.77+$0.04 (+0.02%)
Price as of Jun 03, 2026 5:11 PM EDT- $9.3BMarket Cap
- 9.09%1-Year Change
- Medical DevicesIndustry
Masimo (MASI)
$178.77+$0.04 (+0.02%)
Top Holders
Institutional
Mutual Funds
Holder | Ownership %
| Shares Held | Change (Shares, %) | Report Date |
|---|---|---|---|---|
BLACKROCK INC. | 17.86% | 9.4M | +1.5M (+15.73%) | Jun 30, 2024 |
BLACKROCK FUNDING, INC. /DE | 16.61% | 8.7M | -124,056 (-1.43%) | Dec 31, 2024 |
BLACKROCK, INC. | 8.87% | 4.6M | -4.2M (-90.67%) | Mar 31, 2026 |
POLITAN CAPITAL MANAGEMENT LP | 8.76% | 4.6M | 0 (0.00%) | Mar 31, 2026 |
VANGUARD GROUP INC | 8.30% | 4.3M | -461,225 (-10.61%) | Dec 31, 2025 |
BLACKROCK FUND ADVISORS | 6.53% | 3.4M | +338,246 (+9.89%) | Dec 31, 2016 |
PENTWATER CAPITAL MANAGEMENT LP | 6.07% | 3.2M | +3.2M (+100.00%) | Mar 31, 2026 |
Holder | Ownership %
| Shares Held | Change (Shares, %) | Report Date |
|---|---|---|---|---|
VANGUARD INDEX FUNDS | 6.88% | 3.6M | +51,359 (+1.42%) | Mar 31, 2026 |
RIVERPARK FUNDS TRUST | 5.39% | 2.8M | 0 (0.00%) | Mar 31, 2026 |
iSHARES TRUST | 5.32% | 2.8M | +36,852 (+1.32%) | Mar 31, 2026 |
MFS SERIES TRUST IV | 3.14% | 1.6M | 0 (0.00%) | Feb 28, 2026 |
AMCAP FUND | 2.28% | 1.2M | 0 (0.00%) | Feb 28, 2026 |
T. Rowe Price Small-Cap Stock Fund, Inc. | 1.27% | 667,080 | 0 (0.00%) | Mar 31, 2026 |
FIDELITY SELECT PORTFOLIOS | 1.07% | 560,000 | -2.0M (-352.68%) | Feb 28, 2026 |
Current Ownership Distribution
- Institutions917.0M (74.13%)
- Mutual Funds317.5M (25.66%)
- Insiders2.5M (0.20%)
- Other0 (0.00%)
Insider Transactions
- 0.20% (2.5M)Current InsiderOwnership (%, shares)
- 2Number of InsiderBuying (last 12 months)
- $2.5MAmount of InsiderBuying (last 12 months)
- 2Number of InsiderSelling (last 12 months)
- $17.1MAmount of InsiderSelling (last 12 months)
Insider Name & Title | Type | Date
| Transaction Value | Shares | Share Price | Shares After Transactions |
|---|---|---|---|---|---|---|
LANE WENDY E | Exempt | Apr 29, 2026 | $0.00 | 1,225 | $0.00 | 0 |
Scannell Timothy J | Exempt | Apr 29, 2026 | $0.00 | 1,225 | $0.00 | 0 |
LANE WENDY E | Exempt | Apr 29, 2026 | $0.00 | 1,225 | $0.00 | 2,608 |
Brennan Michelle | Exempt | Apr 29, 2026 | $0.00 | 1,225 | $0.00 | 0 |
Scannell Timothy J | Exempt | Apr 29, 2026 | $0.00 | 1,225 | $0.00 | 2,608 |
Brennan Michelle | Exempt | Apr 29, 2026 | $0.00 | 1,225 | $0.00 | 8,543 |
LANE WENDY E | Award | Apr 23, 2026 | $199,976.49 | 1,119 | $178.71 | 2,238 |
Scannell Timothy J | Award | Apr 23, 2026 | $199,976.49 | 1,119 | $178.71 | 2,238 |
Brennan Michelle | Award | Apr 23, 2026 | $199,976.49 | 1,119 | $178.71 | 2,238 |
Hellmann Elisabeth A Chief Human Resources Officer | Exempt | Apr 21, 2026 | $0.00 | 335 | $0.00 | 1,005 |
Hellmann Elisabeth A Chief Human Resources Officer | Exempt | Apr 21, 2026 | $0.00 | 335 | $0.00 | 335 |
Hellmann Elisabeth A Chief Human Resources Officer | In Kind | Apr 21, 2026 | $21,590.03 | 121 | $178.43 | 214 |
Politan Capital Management LP | Other | Mar 12, 2026 | $0.00 | 130,869 | $0.00 | 130,869 |
Young Micah W EVP & Chief Financial Officer | Exempt | Mar 11, 2026 | $0.00 | 873 | $0.00 | 2,622 |
Politan Capital Management LP | Other | Mar 11, 2026 | $0.00 | 142,681 | $0.00 | 142,681 |
Szyman Catherine M CEO | Exempt | Mar 11, 2026 | $0.00 | 2,101 | $0.00 | 6,306 |
Young Micah W EVP & Chief Financial Officer | Exempt | Mar 11, 2026 | $0.00 | 873 | $0.00 | 26,127 |
Szyman Catherine M CEO | Exempt | Mar 11, 2026 | $0.00 | 2,101 | $0.00 | 8,674 |
Young Micah W EVP & Chief Financial Officer | In Kind | Mar 11, 2026 | $82,646.37 | 471 | $175.47 | 25,656 |
Szyman Catherine M CEO | In Kind | Mar 11, 2026 | $187,577.43 | 1,069 | $175.47 | 7,605 |
Szyman Catherine M CEO | Award | Mar 06, 2026 | $0.00 | 39,904 | $0.00 | 39,904 |
Young Micah W EVP & Chief Financial Officer | Award | Mar 06, 2026 | $0.00 | 17,671 | $0.00 | 17,671 |
Dadswell Charles EVP, General Counsel | Award | Mar 06, 2026 | $0.00 | 10,261 | $0.00 | 10,261 |
Hellmann Elisabeth A Chief Human Resources Officer | Award | Mar 06, 2026 | $0.00 | 5,985 | $0.00 | 5,985 |
Sampath Anand EVP, Operations | Award | Mar 06, 2026 | $0.00 | 6,840 | $0.00 | 6,840 |
Benner Tim Chief Marketing Officer | Award | Mar 06, 2026 | $0.00 | 6,128 | $0.00 | 6,128 |
Young Micah W EVP & Chief Financial Officer | Exempt | Feb 27, 2026 | $0.00 | 15,000 | $0.00 | 0 |
Young Micah W EVP & Chief Financial Officer | Award | Feb 27, 2026 | $0.00 | 15,000 | $0.00 | 33,347 |
Young Micah W EVP & Chief Financial Officer | In Kind | Feb 27, 2026 | $1.4M | 8,093 | $175.35 | 25,254 |
Young Micah W EVP & Chief Financial Officer | Award | Feb 26, 2026 | $0.00 | 2,034 | $0.00 | 19,470 |