MASIMO CORP - MASI

Sector: Healthcare · Industry: Electromedical & Electrotherapeutic Apparatus

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Q1 2026 · Q4 2025

Value (USD)

Total reported value ($000)

$10.39B

QoQ value delta ($000)

+$3.4B (+48.66%)

Implied price effect (QoQ)

+33.49%

Total shares

59,817,933

QoQ shares delta

+6,101,571 (+11.36%)

Total shares held by funds (by quarter)

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Top 25 only Full list

Partial Q1 2026 data: 447 holders have filed so far. Prior holders are carried forward until their next 13F confirms a change.

Manager	Value ($000)	Shares	% of 13F
BlackRock, Inc.	826,131	4,644,578	0.01%
Politan Capital Management LP	816,360	4,589,648	82.89%
VANGUARD GROUP INC	565,603	4,348,786	0.01%
Pentwater Capital Management LP	564,915	3,176,000	2.93%
BARCLAYS PLC	488,072	2,743,985	0.12%
HBK INVESTMENTS L P	458,212	2,576,109	4.65%
MASSACHUSETTS FINANCIAL SERVICES CO /MA/	416,692	2,342,790	0.14%
VANGUARD CAPITAL MANAGEMENT LLC	364,641	2,050,045	0.01%
VANGUARD PORTFOLIO MANAGEMENT LLC	356,960	2,006,861	0.02%
FMR LLC	258,057	1,450,823	0.01%
STATE STREET CORP	255,727	1,437,724	0.01%
MILLENNIUM MANAGEMENT LLC	227,220	1,277,453	0.09%
GOLDMAN SACHS GROUP INC	175,058	984,192	0.02%
GEODE CAPITAL MANAGEMENT, LLC	170,210	956,736	0.01%
BALYASNY ASSET MANAGEMENT L.P.	152,272	856,086	0.2%
AQR CAPITAL MANAGEMENT LLC	147,399	831,966	0.07%
MORGAN STANLEY	133,832	752,417	0.01%
JPMORGAN CHASE & CO	101,541	572,645	0.01%
CITIGROUP INC	94,873	533,388	0.04%
SG Americas Securities, LLC	92,995	522,824	0.1%
FIL Ltd	85,733	482,000	0.07%
First Trust Capital Management L.P.	85,271	479,403	4.48%
HSBC HOLDINGS PLC	84,266	473,434	0.04%
UBS Group AG	83,288	468,257	0.01%
Magnetar Financial LLC	75,964	427,081	0.77%