HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND

Pension

Position in MASI — Masimo Corp

CIK 1535845 TORONTO, A6

Position in MASI

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

Position Value

$12,024,012

+$11,431,081 QoQ

Shares Held

67,600

+1784.6% QoQ

Ownership

0.129%

of shares outstanding

% of Portfolio

0.02%

of 13F equity value

Holder Rank

#94

of 445 holders

Holding Since

Jun 2021

8 quarters on record

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

Healthcare · as of Mar 31, 2026

HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND holds $418,125,868 across 24 Medical Devices names. MASI ranks #7 (2.9% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	ABT	Abbott Laboratories	975,819	$100,187,336
2	ITGR	Integer Holdings Corp	819,046	$72,076,048
3	BSX	Boston Scientific Corp	789,092	$49,515,523
4	MDT	Medtronic plc	530,048	$45,928,659
5	NEOG	Neogen Corp	3,297,346	$30,632,344
6	PEN	Penumbra Inc	67,850	$22,279,904
7	MASI	Masimo Corp This page	67,600	$12,024,012
8	LMRI	Lumexa Imaging Holdings, Inc.	1,300,000	$11,180,000

8 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$12,024,012	67,600	+1784.6%	Shares	Sole	2026-05-14
2024-12-31	$592,931	3,587	-88.4%	Shares	Sole	2025-02-14
2024-09-30	$4,119,897	30,900	+47.1%	Shares	Sole	2024-11-13
2022-12-31	$3,106,950	21,000	-85.6%	Shares	Sole	2023-02-13
2022-09-30	$20,538,780	145,500	+81.2%	Shares	Sole	2022-11-14
2022-06-30	$10,489,795	80,277	+154.8%	Shares	Sole	2022-08-11
2022-03-31	$4,584,510	31,500	+8124.5%	Shares	Sole	2022-05-12
2021-06-30	$92,858	383	—	Shares	Sole	2021-08-12
No filing history on record for this holder in this stock.