RENAISSANCE TECHNOLOGIES LLC

Position in MASI — Masimo Corp

CIK 1037389 NEW YORK, NY

Position in MASI

as of Mar 31, 2026 · filed May 14, 2026 Compact

Position Value

$42,599,865

+$34,809,271 QoQ

Shares Held

239,500

+299.8% QoQ

Ownership

0.457%

of shares outstanding

% of Portfolio

0.07%

of 13F equity value

Holder Rank

#47

of 445 holders

Holding Since

Mar 2020

13 quarters on record

Voting authority Sole 100.ToString("F0")% Shared 0.ToString("F0")% None 0.ToString("F0")%

Healthcare · as of Mar 31, 2026

RENAISSANCE TECHNOLOGIES LLC holds $985,614,599 across 73 Medical Devices names. MASI ranks #6 (4.3% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	BSX	Boston Scientific Corp	3,152,005	$197,788,313
2	SYK	Stryker Corp	391,600	$128,675,844
3	ABT	Abbott Laboratories	1,238,666	$127,173,838
4	DXCM	Dexcom Inc	1,582,996	$99,412,148
5	PODD	Insulet Corp	426,003	$89,392,469
6	MASI	Masimo Corp This page	239,500	$42,599,865
7	IRMD	Iradimed Corp	440,712	$42,422,937
8	INMD	InMode Ltd.	2,586,218	$35,379,462

13 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$42,599,865	239,500	+299.8%	Shares	Sole	2026-05-14
2025-12-31	$7,790,594	59,900	+136.0%	Shares	Sole	2026-02-12
2025-06-30	$4,268,918	25,377	+69.2%	Shares	Sole	2025-08-13
2025-03-31	$2,499,000	15,000	-63.6%	Shares	Sole	2025-05-14
2023-06-30	$6,784,396	41,230	-49.3%	Shares	Sole	2023-08-11
2023-03-31	$15,003,102	81,300	-54.8%	Shares	Sole	2023-05-12
2022-12-31	$26,586,615	179,700	+275.9%	Shares	Sole	2023-02-13
2022-09-30	$6,747,448	47,800	+671.0%	Shares	Sole	2022-11-14
2021-12-31	$1,815,236	6,200	+463.6%	Shares	Sole	2022-02-11
2021-03-31	$252,626	1,100	-98.7%	Shares	Sole	2021-05-13
2020-09-30	$19,498,556	82,600	+454.4%	Shares	Sole	2020-11-13
2020-06-30	$3,397,051	14,900	-21.6%	Shares	Sole	2020-08-13
2020-03-31	$3,365,280	19,000	—	Shares	Sole	2020-05-14
No filing history on record for this holder in this stock.