HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND

Pension

Position in MRK — Merck & Co., Inc.

CIK 1535845 TORONTO, A6

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Position in MRK

as of Jun 30, 2026 · filed Aug 13, 2026 Compact

Position Value

$39,369,701

-$61,507,297 QoQ

Shares Held

306,379

-63.5% QoQ

Ownership

0.012%

of shares outstanding

% of Portfolio

0.07%

of 13F equity value

Holder Rank

#362

of 3,769 holders

Holding Since

Mar 2020

26 quarters on record

Voting authority Sole 100% Shared 0% None 0%

Common Shares in MRK Over Time

Shares Held

Position Value (USD)

Position in Drug Manufacturers - General

Healthcare · as of Jun 30, 2026

HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND holds $532,213,045 across 11 Drug Manufacturers - General names. MRK ranks #6 (7.4% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	GILD	Gilead Sciences, Inc.	1,016,707	$128,450,762
2	JNJ	Johnson & Johnson	362,129	$91,969,902
3	LLY	ELI LILLY & Co	61,630	$73,920,877
4	AMGN	Amgen Inc	157,741	$57,121,170
5	ABBV	AbbVie Inc.	224,960	$56,608,934
6	MRK	Merck & Co., Inc. This page	306,379	$39,369,701
7	BMY	Bristol Myers Squibb Co	651,769	$37,554,929
8	PFE	Pfizer Inc	900,827	$21,691,914

All Filings in MRK

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26 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$39,369,701	306,379	-63.5%	Shares	Sole	2026-08-13
2026-03-31	$100,876,998	838,615	-10.2%	Shares	Sole	2026-05-14
2025-12-31	$98,325,365	934,119	-4.3%	Shares	Sole	2026-02-13
2025-09-30	$81,905,524	975,879	+277.4%	Shares	Sole	2025-11-13
2025-06-30	$20,468,401	258,570	-46.9%	Shares	Sole	2025-08-13
2025-03-31	$43,673,625	486,560	-79.4%	Shares	Sole	2025-05-14
2024-12-31	$235,290,096	2,365,200	+51.2%	Shares	Sole	2025-02-14
2024-09-30	$177,607,840	1,564,000	+47.8%	Shares	Sole	2024-11-13
2024-06-30	$130,980,400	1,058,000	+85.9%	Shares	Sole	2024-09-20
2024-03-31	$75,079,550	569,000	-35.0%	Shares	Sole	2024-05-13
2023-12-31	$95,414,304	875,200	+346.5%	Shares	Sole	2024-03-21
2023-09-30	$20,178,200	196,000	-67.1%	Shares	Sole	2023-11-13
2023-06-30	$68,772,440	596,000	+210.4%	Shares	Sole	2023-08-11
2023-03-31	$20,426,880	192,000	0.0%	Shares	Sole	2023-05-12
2022-12-31	$21,302,400	192,000	+229.6%	Shares	Sole	2023-02-13
2022-09-30	$5,016,834	58,254	-9.6%	Shares	Sole	2022-11-14
2022-06-30	$5,875,906	64,450	+52.1%	Shares	Sole	2022-08-11
2022-03-31	$3,477,607	42,384	-93.9%	Shares	Sole	2022-05-12
2021-12-31	$53,099,180	692,839	+31.8%	Shares	Sole	2022-02-11
2021-09-30	$39,489,007	525,749	-48.2%	Shares	Sole	2021-11-10
2021-06-30	$78,862,746	1,014,051	+270.3%	Shares	Sole	2021-08-12
2021-03-31	$21,108,101	273,811	-58.0%	Shares	Sole	2021-05-13
2020-12-31	$53,288,586	651,450	+768.6%	Shares	Sole	2021-03-01
2020-09-30	$6,221,169	74,999	+226.7%	Shares	Sole	2021-03-01
2020-06-30	$1,775,420	22,959	-96.2%	Shares	Sole	2021-03-01
2020-03-31	$46,001,406	597,887	—	Shares	Sole	2020-05-13
No filing history on record for this holder in this stock.