MASIMO CORP (MASI) is held by institutional investors who disclose positions via SEC 13F filings. View the full list of institutional holders on HoldingsIntel.

Are institutions buying or selling MASI?

HoldingsIntel tracks quarter-over-quarter changes in institutional positions for MASIMO CORP, showing new buyers, position increases, decreases, and exits with conviction-weighted sentiment.

What is the Smart Money Verdict on MASI?

The Smart Money Verdict combines four independent signals (institutional 13F activity, insider trades, activist filings, and congressional trades) into a single assessment for MASIMO CORP.

Is institutional money flowing into MASI?

189 institutional investors hold MASIMO CORP (MASI). View detailed buyer/seller breakdown on HoldingsIntel.

What do hedge funds think about MASI?

Track institutional sentiment and conviction scores for MASIMO CORP (MASI) including Smart Money Verdict and position changes on HoldingsIntel.

MASIMO CORP

MASI·574795100·US·equity·Healthcare - Medical Devices-Activist

MASI (MASIMO CORP) is held by 189 institutional investors as of Q4 2025. Largest holders: HSBC HOLDINGS PLC ($84.3M), DIMENSIONAL FUND ADVISORS LP ($29.2M), Nuveen, LLC ($19.8M). Net institutional sentiment: Mixed.

189

Holders

Avg rating(7 Elite)

$5.7B

Total Value

46% (204)

Fund Consensus

85 buying - 101 selling

Smart Money Verdict

View all

45Weak MomentumFull Convergence

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See how MASI's score breaks down across 4 SEC sources

Held by 189 funds

7 elite

Who's Trading

ActivistBPBlackRock Portfolio Management LLC

13F: Dec 31, 2025Insider & Congress: Updated regularly

InsiderSJScannell Timothy JMApr 29, 2026

InsiderHAHellmann Elisabeth AMApr 21, 2026

Activist

The Vanguard Group0.0%Mar 27, 2026

Congress

Kevin HernSale $15,001 - $50,000Sep 26, 2025

Congress

Kevin HernSale $50,001 - $100,000Dec 19, 2022

Fund	Action	Shares	Value	Weight	Est. P&L	Conviction
HSBC HOLDINGS PLC	New	473,434	$84.3M	0.0%	—	41
DIMENSIONAL FUND ADVISORS LP	Decreased	164,402(-5.5%)	$29.2M	0.0%	—	0
NUNuveen, LLC	Decreased	111,542(-50.2%)	$19.8M	0.0%	—	0
PRINCIPAL FINANCIAL GROUP INC	Increased	102,718(+5.0%)	$18.3M	0.0%	—	30
Swiss National Bank	Decreased	90,300(-0.9%)	$16.1M	0.0%	—	0
$DEUTSCHE BANK AG\$ DEUTSCHE BANK AG\	Increased	89,387(+1227.0%)	$15.9M	0.0%	—	45
CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM	Increased	77,397(+22.2%)	$13.8M	0.0%	—	34
Legal & General Group Plc	Decreased	62,545(-32.3%)	$11.1M	0.0%	—	0
RSRetirement Systems of Alabama	Increased	55,974(+2.1%)	$10M	0.0%	—	28
STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM	Decreased	39,654(-0.2%)	$7.1M	0.0%	—	0
STRS OHIO	Increased	37,213(+0.8%)	$6.6M	0.0%	—	27
Alberta Investment Management Corp	New	34,107	$6.1M	0.0%	—	38
NEW YORK STATE COMMON RETIREMENT FUND	Unchanged	24,160	$4.3M	0.0%	—	0
NEW YORK LIFE INVESTMENT MANAGEMENT LLC	New	22,191	$3.9M	0.0%	—	37
Police & Firemen's Retirement System of New Jersey	Unchanged	19,484	$3.5M	0.0%	—	0
COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS	Increased	18,940(+65.8%)	$3.4M	0.0%	—	39
MUTUAL OF AMERICA CAPITAL MANAGEMENT LLC	Decreased	17,496(-7.9%)	$3.1M	0.0%	—	0
State of New Jersey Common Pension Fund D	Decreased	16,320(-2.0%)	$2.9M	0.0%	—	0
WEALTH ENHANCEMENT ADVISORY SERVICES, LLC	Increased	16,837(+48.1%)	$2.6M	0.0%	—	36
INTECH INVESTMENT MANAGEMENT LLC	Decreased	14,216(-42.6%)	$2.5M	0.0%	—	0
YOUSIF CAPITAL MANAGEMENT, LLC	Decreased	13,868(-4.5%)	$2.5M	0.0%	—	0
ENVESTNET ASSET MANAGEMENT INC	Decreased	12,596(-25.8%)	$2.2M	0.0%	—	0
Arizona State Retirement System	Decreased	12,541(-2.2%)	$2.2M	0.0%	—	0
FIFTH THIRD BANCORP	Increased	11,736(+1934.0%)	$2.1M	0.0%	—	42
STATE OF MICHIGAN RETIREMENT SYSTEM	Increased	10,996(+1.9%)	$2M	0.0%	—	26
KLP KAPITALFORVALTNING AS	Increased	10,900(+2.8%)	$1.9M	0.0%	—	27
Pictet Asset Management Holding SA	Increased	7,020(+7.3%)	$1.2M	0.0%	—	27
MFMerit Financial Group, LLC	Increased	6,097(+104.5%)	$1.1M	0.0%	—	41
TRTEACHER RETIREMENT SYSTEM OF TEXAS	New	5,921	$1.1M	0.0%	—	35
PNC FINANCIAL SERVICES GROUP, INC.	Decreased	5,107(-29.9%)	$908,383	0.0%	—	0
HighTower Advisors, LLC	Increased	5,024(+34.1%)	$893,619	0.0%	—	32
WAWOLVERINE ASSET MANAGEMENT LLC	New	4,549	$809,131	0.0%	—	34
Russell Investments Group, Ltd.	Decreased	4,363(-5.8%)	$776,046	0.0%	—	0
Private Advisor Group, LLC	Decreased	4,211(-0.3%)	$749,011	0.0%	—	0
ProShare Advisors LLC	Increased	3,917(+114.0%)	$696,717	0.0%	—	40
HB Wealth Management, LLC	Increased	2,704(+15.7%)	$480,960	0.0%	—	28
ASSETMARK, INC	Increased	2,068(+11.8%)	$367,835	0.0%	—	26
Sanctuary Advisors, LLC	Increased	1,689(+1.0%)	$300,422	0.0%	—	24
MML INVESTORS SERVICES, LLC	New	1,524	$271,074	0.0%	—	32
Calamos Advisors LLC	New	1,511	$268,762	0.0%	—	32
WHITTIER TRUST CO	Unchanged	1,134	$202,408	0.0%	—	0
Eurizon Capital SGR S.p.A.	Increased	845(+7.8%)	$150,574	0.0%	—	24
LOS ANGELES CAPITAL MANAGEMENT LLC	Unchanged	220	$39,131	0.0%	—	0
NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO	Decreased	52(-3.7%)	$9,249	0.0%	—	0
NISA INVESTMENT ADVISORS, LLC	Increased	41(+36.7%)	$7,293	0.0%	—	14
EXCHANGE TRADED CONCEPTS, LLC	Exited	0(-100.0%)	$663,436	0.0%	—	0
Vontobel Holding Ltd.	Exited	0(-100.0%)	$201,463	0.0%	—	0
Sumitomo Mitsui Trust Group, Inc.	Exited	0(-100.0%)	$1.9M	0.0%	—	0
Assenagon Asset Management S.A.	Exited	0(-100.0%)	$7M	0.0%	—	0
Swedbank AB	Exited	0(-100.0%)	$7.7M	0.0%	—	0
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