Masimo Corp

MASIDelisted Jun 10, 2026

Industry: Electromedical & Electrotherapeutic Apparatus
SEC CIK: 0000937556

SEC filings (opens in a new tab)

Masimo Corp was delisted on Jun 10, 2026; its insiders filed their last Form 4 on Jun 12, 2026; 451 institutions reported holding it in 13F filings for Q1 2026, worth $9.69B in total; Soros Fund Management was the only superinvestor holding it.

Q4 2024 vs. Q3 2024

How the institutions holding Masimo Corp changed between Q3 2024 and Q4 2024.

All holders in Q4 2024 All holders in Q3 2024

13F holders of MASI: Q3 2024 compared with Q4 2024
Measure	Q3 2024	Of which not filed for Q4 2024	Q4 2024	Change
Holders	362	8	366	+12
Shares	50.4M	574.0K	51.4M	+1.55M (+3.1%)
Value	$6.72B	$76.5M	$8.50B	+$1.86B (+28.0%)

8 institutions that held it in Q3 2024 haven't filed for Q4 2024 yet. Not filing isn't selling, so the changes leave them out.

New holders (62)

Institutions that held Masimo Corp at the end of Q4 2024 but not at the end of Q3 2024.

Institutions new to MASI in Q4 2024
Institution	Shares	Value	% of portfolio
Point72 Asset Management, L.P.	248,499	$41.1M	0.11%
Raymond James Financial Inc	203,971	$33.7M	0.01%
BLI - Banque de Luxembourg Investments	101,200	$17.1M	0.46%
Great Lakes Advisors, LLC	95,730	$15.8M	0.14%
Catalio Capital Management, LP	87,377	$14.4M	3.16%
Point72 (DIFC) Ltd	58,417	$9.66M	0.87%
LMR Partners LLP	42,448	$7.02M	0.12%
Atika Capital Management LLC	36,800	$6.08M	0.79%
O'Shaughnessy Asset Management, LLC	31,375	$5.19M	0.04%
ExodusPoint Capital Management, LP	25,426	$4.20M	0.04%
Cinctive Capital Management LP	25,176	$4.16M	0.22%
Bellevue Group AG	24,166	$3.99M	0.08%
Calamos Advisors LLC	16,280	$2.69M	0.01%
Police & Firemen's Retirement System of New Jersey	15,573	$2.57M	0.03%
Marshall Wace, LLP	13,289	$2.20M	0.00%
Jefferies Financial Group Inc.	10,657	$1.76M	0.02%
Lecap Asset Management Ltd	9,720	$1.61M	0.44%
Tema ETFs LLC	9,580	$1.58M	0.66%
KLP Kapitalforvaltning AS	9,400	$1.55M	0.01%
TownSquare Capital, LLC	8,126	$1.34M	0.02%
Navellier & Associates Inc	6,310	$1.04M	0.13%
Polar Capital Holdings Plc	6,023	$995.6K	0.01%
Landscape Capital Management, L.L.C.	5,586	$923.4K	0.10%
HSBC Holdings PLC	5,494	$912.1K	0.00%
B.O.S.S. Retirement Advisors, LLC	5,332	$881.4K	0.25%
New Age Alpha Advisors, LLC	3,971	$656.4K	0.03%
RFG Advisory, LLC	3,905	$645.4K	0.02%
Lido Advisors, LLC	3,356	$554.8K	0.00%
Farringdon Capital, Ltd.	3,217	$531.8K	0.22%
PEAK6 LLC	3,196	$528.3K	0.02%
Freestone Grove Partners LP	2,162	$357.4K	0.00%
Commonwealth Equity Services, LLC	2,139	$354.0K	0.00%
Atria Investments LLC	2,026	$334.9K	0.00%
Cetera Investment Advisers	1,846	$305.1K	0.00%
Crestline Management, LP	1,800	$297.5K	0.01%
Envestnet Portfolio Solutions, Inc.	1,505	$248.8K	0.00%
Virtu Financial LLC	1,478	$244.0K	0.01%
Fifth Third Wealth Advisors LLC	1,456	$240.7K	0.01%
Trust Point Inc.	1,390	$229.8K	0.02%
Keel Point, LLC	1,328	$219.5K	0.02%
Forum Financial Management, LP	1,314	$217.2K	0.00%
apricus wealth, LLC	1,303	$215.4K	0.14%
Pacific Point Advisors, LLC	1,184	$208.0K	0.13%
Greenleaf Trust	1,257	$207.8K	0.00%
HB Wealth Management, LLC	1,214	$200.7K	0.00%
BI Asset Management Fondsmaeglerselskab A/S	985	$163.0K	0.00%
Northwest & Ethical Investments L.P.	700	$115.6K	0.00%
Kohmann Bosshard Financial Services, LLC	408	$67.4K	0.01%
SBI Securities Co., Ltd.	278	$46.0K	0.00%
Trust Co of Vermont	200	$33.1K	0.00%
Jones Financial Companies LLLP	161	$26.6K	0.00%
Y.D. More Investments Ltd	120	$19.8K	0.00%
Bayforest Capital Ltd	113	$18.7K	0.02%
Fourth Dimension Wealth, LLC	100	$16.5K	0.01%
Group One Trading, L.P.	75	$12.4K	0.00%
MAI Capital Management	73	$12.1K	0.00%
Holos Integrated Wealth LLC	68	$11.2K	0.01%
WPG Advisers, LLC	21	$3.47K	0.00%
Steward Partners Investment Advisory, LLC	19	$3.14K	0.00%
Global Financial Private Client, LLC	2	$331	0.00%
Comprehensive Financial Planning, Inc.	2	$331	0.00%
Parkworth Wealth Management, Inc.	1	$165	0.00%

Sold out (50)

Institutions that held Masimo Corp at the end of Q3 2024 and filed for Q4 2024 without it.

Institutions that sold out of MASI in Q4 2024
Institution	Shares, Q3 2024	Value, Q3 2024
ING Groep NV	240,900	$32.1M
Clearline Capital LP	160,029	$21.3M
National Bank of Canada	132,500	$17.7M
Twin Tree Management, LP	94,416	$12.6M
Capital Fund Management S.A.	53,726	$7.16M
Squarepoint Ops LLC	53,226	$7.10M
Bank of Nova Scotia	35,438	$4.72M
Roubaix Capital, LLC	34,041	$4.54M
Susquehanna Portfolio Strategies, LLC	33,995	$4.53M
SG Americas Securities, LLC	28,967	$3.86M
Troluce Capital Advisors LLC	25,000	$3.33M
D. E. Shaw & Co., Inc.	24,358	$3.25M
Algert Global LLC	19,139	$2.55M
XTX Topco Ltd	17,157	$2.29M
Brevan Howard Capital Management LP	15,456	$2.06M
Axq Capital, LP	11,133	$1.48M
Teza Capital Management LLC	10,919	$1.46M
Edgestream Partners, L.P.	10,449	$1.39M
Shay Capital LLC	10,150	$1.35M
Engineers Gate Manager LP	9,980	$1.33M
Versor Investments LP	9,591	$1.28M
Gsa Capital Partners LLP	8,230	$1.10M
Lombard Odier Asset Management (USA) Corp	7,171	$956.1K
Acadian Asset Management LLC	7,169	$953.0K
Susquehanna International Group, LLP	5,668	$755.7K
Centiva Capital, LP	5,087	$678.3K
Graham Capital Management, L.P.	4,483	$597.7K
ADAR1 Capital Management, LLC	3,894	$519.2K
Y-Intercept (Hong Kong) Ltd	3,893	$519.1K
CWM Advisors, LLC	2,964	$395.2K
Quest Partners LLC	2,115	$282.0K
Tudor Investment Corp Et Al	1,965	$262.0K
Kapitalo Investimentos Ltda	1,815	$242.0K
Stifel Financial Corp	1,716	$228.8K
Qsemble Capital Management, LP	1,617	$215.6K
Cambridge Investment Research Advisors, Inc.	1,542	$206.0K
Cresset Asset Management, LLC	1,528	$203.7K
Resona Asset Management Co.,Ltd.	987	$131.5K
HHM Wealth Advisors, LLC	625	$83.3K
Danske Bank A/S	500	$66.7K
Catalyst Funds Management Pty Ltd	400	$53.3K
NBC Securities, Inc.	228	$30.0K
Clear Street Markets LLC	107	$14.0K
Colonial Trust Advisors	57	$7.60K
Sunbelt Securities, Inc.	38	$5.07K
Capital Performance Advisors LLP	11	$1.47K
Ashton Thomas Securities, LLC	6	$800
Abound Wealth Management	3	$400
Claris Advisors, LLC	2	$267
Bokf, NA	2	$265

Not filed for Q4 2024 yet (8)

Institutions that held Masimo Corp at the end of Q3 2024 and haven't filed a 13F for Q4 2024. Not filing isn't selling, so they aren't counted as sold out.

Institutions holding MASI in Q3 2024 that haven't filed for Q4 2024
Institution	Shares, Q3 2024	Value, Q3 2024
Ensemble Capital Management, LLC	340,355	$45.4M
Raymond James & Associates	175,050	$23.3M
PEAK6 Investments LLC	39,515	$5.27M
ClariVest Asset Management LLC	9,609	$1.21M
Raymond James Trust N.A.	8,814	$1.18M
VitalStone Financial, LLC	597	$79.6K
FinTrust Capital Advisors, LLC	13	$1.73K
First Personal Financial Services	1	$134