Masimo Ownership | Who Owns Masimo?
Masimo Ownership Summary
Masimo is owned by 100.20% institutional investors, 7.88% insiders. Blackrock is the largest institutional shareholder, holding 17.64% of MASI shares. Vanguard Total Stock Mkt Idx Inv is the top mutual fund, with 2.87% of its assets in Masimo shares.
MASI Ownership Benchmark
| Type | Name | % Inst | % Insiders | % Retail |
|---|---|---|---|---|
| Stock | Masimo | 100.20% | 7.88% | -8.08% |
| Sector | Healthcare Stocks | 279.19% | 10.58% | -189.76% |
| Industry | Medical Instruments & Supplies Stocks | 42.94% | 14.06% | 43.01% |
Institutional Shareholders
Top Institutional Shareholders by Total Shares
| Holder | Shares | % Holding | Value |
|---|---|---|---|
| Blackrock | 9.35M | 17.64% | $1.18B |
| Blackrock funding, inc. /de | 8.70M | 16.29% | $1.44B |
| Fmr | 8.10M | 15.16% | $1.34B |
| Politan capital management lp | 4.71M | 8.83% | $779.35M |
| Vanguard group | 4.59M | 8.59% | $758.18M |
| Capital research global investors | 2.45M | 4.60% | $405.81M |
| Massachusetts financial services co /ma/ | 1.74M | 3.25% | $286.82M |
| T. rowe price investment management | 1.66M | 3.11% | $274.79M |
| Rtw investments, lp | 1.46M | 2.76% | $184.17M |
| State street | 1.43M | 2.70% | $179.92M |
Top Institutional Shareholders by % of Total Assets
| Holder | Shares | % Assets | Value |
|---|---|---|---|
| Ace management global | 47.69K | 100.00% | $7.88M |
| Politan capital management lp | 4.71M | 50.51% | $779.35M |
| Ensemble capital management | 407.10K | 3.99% | $51.27M |
| Lockerman financial group | 13.60K | 3.83% | $2.25M |
| Rtw investments, lp | 1.46M | 2.85% | $184.17M |
| Cramer rosenthal mcglynn | 222.82K | 2.08% | $36.83M |
| Birchview capital, lp | 15.28K | 2.06% | $2.53M |
| Pura vida investments | 25.00K | 1.99% | $3.15M |
| Liontrust investment partners llp | 792.93K | 1.90% | $131.07M |
| Montanaro asset management | 46.50K | 1.59% | $7.69M |
Top Buyers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Blackrock | 9.35M | 0.03% | 1.47M |
| Fmr | 8.10M | 0.08% | 1.34M |
| Capital research global investors | 2.45M | 0.08% | 1.09M |
| Massachusetts financial services co /ma/ | 1.74M | 0.09% | 943.00K |
| Alliancebernstein | 947.39K | 0.05% | 878.59K |
Top Sellers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Ace management global | 47.69K | 100.00% | -917.81K |
| Westfield capital management co lp | 768.86K | 0.55% | -625.20K |
| Farallon capital management | - | - | -397.00K |
| Mig capital | - | - | -381.73K |
| Two sigma investments, lp | 39.89K | 0.01% | -302.94K |
New Positions
| Holder | Shares | % Assets | Change | Value |
|---|---|---|---|---|
| Raymond james financial | 203.97K | 0.01% | 203.97K | $33.72M |
| Great lakes advisors | 95.73K | 0.14% | 95.73K | $15.82M |
| Caption management | 70.30K | 0.14% | 70.30K | $8.85M |
| Point72 (difc) | 58.42K | 0.35% | 58.42K | $9.66M |
| Norges bank | 33.39K | 0.00% | 33.39K | $5.52M |
Sold Out
| Holder | Change |
|---|---|
| Pacific capital wealth advisors | -2.00 |
| Financial synergies wealth advisors | -2.00 |
| Claris advisors, llc / mo / | -2.00 |
| Amundi | -2.00 |
| Bokf, na | -2.00 |
Institutional Ownership Trends
| Date | Holdings | Change % | Shares | Change % | Ownership | Change % | Increased Position | Change % | Decreased Position | Change % |
|---|---|---|---|---|---|---|---|---|---|---|
| Mar 31, 2025 | 392 | 5.38% | 54,108,094 | 5.12% | 100 | 1.08% | 209 | 20.11% | 117 | -4.10% |
| Dec 31, 2024 | 343 | -8.78% | 49,007,771 | -2.29% | 91 | 1.04% | 159 | -5.36% | 111 | -8.26% |
| Sep 30, 2024 | 371 | 1.64% | 49,915,730 | 1.01% | 93 | 1.08% | 169 | - | 117 | 6.36% |
| Jun 30, 2024 | 363 | 2.54% | 49,413,792 | -3.99% | 93 | 0.98% | 167 | 20.14% | 110 | -18.52% |
| Mar 31, 2024 | 354 | -2.21% | 51,465,670 | 2.48% | 97 | 1.08% | 139 | -23.20% | 135 | 14.41% |
Top Mutual Funds Shareholders
| Holder | Shares | % Holding | Change |
|---|---|---|---|
| Vanguard Total Stock Mkt Idx Inv | 1.56M | 2.87% | 26.02K |
| Vanguard US Total Market Shares ETF | 1.53M | 2.83% | -71.94K |
| MFS Mid Cap Growth Equity | 1.44M | 2.67% | 147.55K |
| MFS Mid Cap Growth A | 1.44M | 2.66% | - |
| iShares Core S&P Mid-Cap ETF | 1.44M | 2.66% | 940.00 |
| Fidelity Select Health Care | 1.36M | 2.52% | - |
| Fidelity Select Medical Tech and Devcs | 1.32M | 2.45% | 3.41K |
| Vanguard Small Cap Index | 1.22M | 2.25% | 7.17K |
| American Funds SMALLCAP World A | 1.15M | 2.12% | -27.24K |
| BlackRock Global Uncons Eq Z USD Acc | 1.06M | 1.96% | 31.08K |
Recent Insider Transactions
| Date | Name | Role | Activity | Value |
|---|---|---|---|---|
| May 12, 2025 | Muhsin Bilal | Chief Operating Officer | Sell | $631.51K |
| May 12, 2025 | Muhsin Bilal | Chief Operating Officer | Sell | $86.61K |
| May 12, 2025 | Muhsin Bilal | Chief Operating Officer | Sell | $914.66K |
| Mar 14, 2025 | REYNOLDS CRAIG B | - | Sell | $341.07K |
| Mar 10, 2025 | Muhsin Bilal | Chief Operating Officer | Sell | $1.67M |
Insider Transactions Trends
| Date | Buy | Sell |
|---|---|---|
| 2025 Q2 | - | 3 |
| 2025 Q1 | - | 9 |
| 2024 Q4 | - | - |
| 2024 Q3 | - | - |
| 2024 Q2 | - | 1 |
MASI Ownership FAQ
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