MASI · Masimo Corp
Market Cap
$9.42B
Shares
52.37M
Registered funds — mutual funds, ETFs and closed-end funds — whose latest Form N-PORT portfolio report holds this stock, matched by the stock's CUSIP. Each row is one fund position with its size, value and weight in that fund.
Funds holding MASI
339 fund positions| Fund | Ticker | Balance | Value | % of Fund | Side | Reported | Open |
|---|---|---|---|---|---|---|---|
| MFS Mid Cap Growth Fund | — | 1,635,871 | $291,921,180 | 2.12% | Long | 2026-05-31 | |
| iShares Core S&P Mid-Cap ETF | — | 1,511,639 | $268,875,229 | 0.25% | Long | 2026-03-31 | |
| VANGUARD TOTAL STOCK MARKET INDEX FUND | — | 1,452,326 | $258,325,226 | 0.01% | Long | 2026-03-31 | |
| VANGUARD SMALL-CAP INDEX FUND | — | 1,052,799 | $187,261,358 | 0.11% | Long | 2026-03-31 | |
| VANGUARD SMALL-CAP GROWTH INDEX FUND | — | 589,576 | $104,867,883 | 0.27% | Long | 2026-03-31 | |
| VANGUARD EXTENDED MARKET INDEX FUND | — | 509,855 | $90,687,909 | 0.11% | Long | 2026-03-31 | |
| First Trust Merger Arbitrage Fund | — | 402,119 | $71,524,907 | 4.53% | Long | 2026-03-31 | |
| State Street SPDR S&P MidCap 400SM ETF Trust | MDY | 344,120 | $61,208,624 | 0.25% | Long | 2026-03-31 | |
| Fidelity Mid-Cap Stock Fund | — | 321,749 | $57,409,674 | 0.66% | Long | 2026-04-30 | |
| SMALLCAP World Fund Inc | — | 317,326 | $56,442,776 | 0.07% | Long | 2026-03-31 | |
| iShares Russell Mid-Cap Growth ETF | — | 302,416 | $53,790,734 | 0.29% | Long | 2026-03-31 | |
| Nexpoint Merger Arbitrage Fund | — | 297,500 | $52,916,325 | 3.80% | Long | 2026-03-31 | |
| Fidelity Extended Market Index Fund | — | 235,695 | $42,059,773 | 0.10% | Long | 2026-05-31 | |
| State Street(R) SPDR(R) Portfolio S&P 400(TM) Mid Cap ETF | — | 223,018 | $39,668,212 | 0.25% | Long | 2026-03-31 | |
| iShares U.S. Medical Devices ETF | — | 196,524 | $34,955,724 | 1.10% | Long | 2026-03-31 | |
| iShares Russell 1000 Growth ETF | — | 181,727 | $32,323,781 | 0.03% | Long | 2026-03-31 | |
| Fidelity Series Large Cap Stock Fund | — | 181,200 | $32,230,044 | 0.13% | Long | 2026-03-31 | |
| iShares Russell Mid-Cap ETF | — | 171,928 | $30,580,833 | 0.06% | Long | 2026-03-31 | |
| Fidelity Mid Cap Index Fund | — | 166,942 | $29,787,461 | 0.06% | Long | 2026-04-30 | |
| iShares S&P Mid-Cap 400 Growth ETF | — | 158,013 | $28,105,772 | 0.28% | Long | 2026-03-31 | |
| THE ARBITRAGE FUND | — | 151,465 | $27,028,929 | 3.20% | Long | 2026-05-31 | |
| VANGUARD HEALTH CARE INDEX FUND | — | 137,148 | $24,474,061 | 0.13% | Long | 2026-05-31 | |
| Schwab U.S. Mid-Cap ETF | — | 123,438 | $22,027,511 | 0.15% | Long | 2026-05-31 | |
| The Merger Fund | — | 117,770 | $20,947,750 | 0.85% | Long | 2026-03-31 | |
| Avantis U.S. Large Cap Value ETF | — | 112,464 | $20,069,201 | 0.16% | Long | 2026-05-31 | |
| iShares S&P Mid-Cap 400 Value ETF | — | 99,718 | $17,736,841 | 0.22% | Long | 2026-03-31 | |
| Fidelity Total Market Index Fund | — | 86,383 | $15,415,046 | 0.01% | Long | 2026-05-31 | |
| First Trust Health Care AlphaDEX Fund | — | 85,107 | $15,185,642 | 1.74% | Long | 2026-04-30 | |
| 1290 VT GAMCO Small Company Value Portfolio | — | 82,500 | $14,674,275 | 0.38% | Long | 2026-03-31 | |
| VANGUARD RUSSELL 1000 GROWTH INDEX FUND | — | 74,447 | $13,285,067 | 0.02% | Long | 2026-05-31 | |
| VANGUARD S&P MID-CAP 400 INDEX FUND | — | 72,860 | $13,001,867 | 0.23% | Long | 2026-05-31 | |
| Schwab Fundamental U.S. Small Company ETF | — | 70,075 | $12,504,884 | 0.14% | Long | 2026-05-31 | |
| Fidelity Series Total Market Index Fund | — | 69,513 | $12,404,595 | 0.01% | Long | 2026-05-31 | |
| Harbor Small Cap Growth Fund | — | 68,878 | $12,289,902 | 0.48% | Long | 2026-04-30 | |
| Fidelity Large Cap Stock Fund | — | 68,087 | $12,148,763 | 0.12% | Long | 2026-04-30 | |
| EQ/MFS Mid Cap Focused Growth Portfolio | — | 67,949 | $12,086,089 | 2.47% | Long | 2026-03-31 | |
| First Trust Multi-Strategy Fund | — | 65,424 | $11,636,967 | 0.90% | Long | 2026-03-31 | |
| Fidelity Large Cap Growth Index Fund | — | 64,094 | $11,436,292 | 0.03% | Long | 2026-04-30 | |
| iShares Core S&P Total U.S. Stock Market ETF | — | 58,777 | $10,454,665 | 0.01% | Long | 2026-03-31 | |
| Fidelity Mid Cap Growth Index Fund | — | 55,049 | $9,791,566 | 0.29% | Long | 2026-03-31 | |
| Fidelity Mid-Cap Stock K6 Fund | — | 52,450 | $9,358,654 | 0.67% | Long | 2026-04-30 | |
| Dimensional U.S. Core Equity 2 ETF | — | 50,143 | $8,947,015 | 0.02% | Long | 2026-04-30 | |
| Champlain Small Company Fund | — | 50,000 | $8,893,500 | 0.87% | Long | 2026-03-31 | |
| Schwab U.S. Large-Cap ETF | — | 49,280 | $8,794,016 | 0.01% | Long | 2026-05-31 | |
| Dunham Monthly Distribution Fund | — | 47,784 | $8,526,099 | 3.02% | Long | 2026-04-30 | |
| JNL Mid Cap Index Fund | — | 46,069 | $8,194,293 | 0.25% | Long | 2026-03-31 | |
| Nuance Mid Cap Value Fund | — | 44,604 | $7,958,692 | 2.75% | Long | 2026-04-30 | |
| MFS Mid Cap Growth Series | — | 41,968 | $7,464,848 | 2.34% | Long | 2026-03-31 | |
| Global Small Capitalization Fund | — | 41,732 | $7,422,871 | 0.26% | Long | 2026-03-31 | |
| Nuveen Equity Index Fund | — | 40,277 | $7,186,625 | 0.01% | Long | 2026-04-30 |
Showing 1–50 of 339 positions
Key facts
CIK
937556
CUSIP
574795100
13F (30d)
11 filings
10 filers
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