ESSEX INVESTMENT MANAGEMENT CO LLC

Position in MRK — Merck & Co., Inc.

CIK 201772 BOSTON, MA

Position in MRK

as of Jun 30, 2026 · filed Aug 6, 2026 Compact

Position Value

$145,462

+$9,294 QoQ

Shares Held

1,132

0.0% QoQ

Ownership

0.000%

of shares outstanding

% of Portfolio

0.02%

of 13F equity value

Holder Rank

#3,544

of 3,766 holders

Holding Since

Mar 2020

26 quarters on record

Voting authority Sole 91% Shared 0% None 9%

Healthcare · as of Jun 30, 2026

ESSEX INVESTMENT MANAGEMENT CO LLC holds $1,117,482 across 6 Drug Manufacturers - General names. MRK ranks #3 (13.0% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	JNJ	Johnson & Johnson	2,382	$604,956
2	NVS	Novartis AG	1,875	$293,850
3	MRK	Merck & Co., Inc. This page	1,132	$145,462
4	BMY	Bristol Myers Squibb Co	1,120	$64,534
5	SNY	Sanofi	200	$8,532
6	OGN	Organon & Co.	11	$148

26 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$145,462	1,132	0.0%	Shares	Sole	2026-08-06
2026-03-31	$136,168	1,132	0.0%	Shares	Sole	2026-05-11
2025-12-31	$119,154	1,132	0.0%	Shares	Sole	2026-02-13
2025-09-30	$95,008	1,132	0.0%	Shares	Sole	2025-11-06
2025-06-30	$89,609	1,132	0.0%	Shares	Sole	2025-08-12
2025-03-31	$101,608	1,132	0.0%	Shares	Sole	2025-05-07
2024-12-31	$112,611	1,132	0.0%	Shares	Sole	2025-02-07
2024-09-30	$128,549	1,132	0.0%	Shares	Sole	2024-10-10
2024-06-30	$140,141	1,132	-2.2%	Shares	Sole	2024-08-12
2024-03-31	$152,666	1,157	-4.1%	Shares	Sole	2024-05-03
2023-12-31	$131,587	1,207	0.0%	Shares	Sole	2024-02-08
2023-09-30	$124,260	1,207	0.0%	Shares	Sole	2023-11-09
2023-06-30	$139,275	1,207	-1.0%	Shares	Sole	2023-08-14
2023-03-31	$129,689	1,219	0.0%	Shares	Sole	2023-05-04
2022-12-31	$135,248	1,219	0.0%	Shares	Sole	2023-02-03
2022-09-30	$104,980	1,219	0.0%	Shares	Sole	2022-11-14
2022-06-30	$111,136	1,219	0.0%	Shares	Sole	2022-08-12
2022-03-31	$100,018	1,219	0.0%	Shares	Sole	2022-05-09
2021-12-31	$93,424	1,219	0.0%	Shares	Sole	2022-02-10
2021-09-30	$91,559	1,219	-94.1%	Shares	Sole	2021-11-09
2021-06-30	$1,611,316	20,719	+1501.2%	Shares	Sole	2021-08-12
2021-03-31	$99,754	1,294	0.0%	Shares	Sole	2021-05-12
2020-12-31	$105,849	1,294	-2.2%	Shares	Sole	2021-02-12
2020-09-30	$109,742	1,323	+6.0%	Shares	Sole	2020-11-12
2020-06-30	$96,507	1,248	0.0%	Shares	Sole	2020-08-04
2020-03-31	$96,021	1,248	—	Shares	Sole	2020-05-04
No filing history on record for this holder in this stock.