S&CO INC

Position in MRK — Merck & Co., Inc.

CIK 1082461 BOSTON, MA

Position in MRK

as of Mar 31, 2026 · filed May 7, 2026 Compact

Position Value

$51,186,763

+$6,395,370 QoQ

Shares Held

425,528

-0.0% QoQ

Ownership

0.017%

of shares outstanding

% of Portfolio

3.34%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Mar 2020

25 quarters on record

Voting authority Sole 100% Shared 0% None 0%

Healthcare · as of Jun 30, 2026

S&CO INC holds $68,156,727 across 4 Drug Manufacturers - General names.

#	Ticker	Company	Shares	Value (USD)
1	JNJ	Johnson & Johnson	157,098	$39,898,179
2	LLY	ELI LILLY & Co	22,300	$26,747,291
3	PFE	Pfizer Inc	50,218	$1,209,249
4	AMGN	Amgen Inc	834	$302,008

25 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$51,186,763	425,528	-0.0%	Shares	Sole	2026-05-07
2025-12-31	$44,791,393	425,531	+0.7%	Shares	Sole	2026-02-05
2025-09-30	$35,463,026	422,531	-0.8%	Shares	Sole	2025-11-06
2025-06-30	$33,711,948	425,871	-0.2%	Shares	Sole	2025-08-07
2025-03-31	$38,290,090	426,583	+5.8%	Shares	Sole	2025-05-08
2024-12-31	$40,126,949	403,367	+0.0%	Shares	Sole	2025-02-07
2024-09-30	$45,800,110	403,312	+1.1%	Shares	Sole	2024-11-07
2024-06-30	$49,410,065	399,112	-0.1%	Shares	Sole	2024-08-08
2024-03-31	$52,718,247	399,532	0.0%	Shares	Sole	2024-05-09
2023-12-31	$43,556,978	399,532	+0.7%	Shares	Sole	2024-02-12
2023-09-30	$40,859,516	396,887	-0.1%	Shares	Sole	2023-11-09
2023-06-30	$45,835,446	397,222	-0.4%	Shares	Sole	2023-08-08
2023-03-31	$42,409,926	398,627	0.0%	Shares	Sole	2023-05-09
2022-12-31	$44,227,665	398,627	-0.1%	Shares	Sole	2023-02-07
2022-09-30	$34,357,746	398,952	-0.1%	Shares	Sole	2022-11-09
2022-06-30	$36,407,554	399,337	-1.5%	Shares	Sole	2022-08-09
2022-03-31	$33,280,136	405,608	+2.4%	Shares	Sole	2022-05-05
2021-12-31	$30,347,370	395,973	+0.3%	Shares	Sole	2022-02-08
2021-09-30	$29,652,902	394,793	+0.1%	Shares	Sole	2021-11-09
2021-06-30	$30,674,665	394,428	+0.1%	Shares	Sole	2021-07-14
2021-03-31	$30,367,386	393,921	+0.6%	Shares	Sole	2021-04-23
2020-12-31	$32,040,718	391,696	+1.7%	Shares	Sole	2021-01-28
2020-09-30	$31,955,838	385,242	-0.1%	Shares	Sole	2020-12-11
2020-06-30	$29,824,802	385,682	-0.0%	Shares	Sole	2020-12-16
2020-03-31	$29,676,668	385,712	—	Shares	Sole	2020-04-28
No filing history on record for this holder in this stock.