O'Brien Greene & Co. Inc

Position in MRK — Merck & Co., Inc.

CIK 1768635 MEDIA, PA

Position in MRK

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

Position Value

$506,804

-$38,108 QoQ

Shares Held

3,944

-12.9% QoQ

Ownership

0.000%

of shares outstanding

% of Portfolio

0.15%

of 13F equity value

Holder Rank

#2,685

of 3,769 holders

Holding Since

Mar 2020

26 quarters on record

Voting authority Sole 58% Shared 0% None 42%

Healthcare · as of Jun 30, 2026

O'Brien Greene & Co. Inc holds $16,965,462 across 6 Drug Manufacturers - General names. MRK ranks #6 (3.0% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	AMGN	Amgen Inc	29,941	$10,842,234
2	ABBV	AbbVie Inc.	8,543	$2,149,760
3	JNJ	Johnson & Johnson	6,146	$1,560,899
4	LLY	ELI LILLY & Co	925	$1,109,472
5	NVS	Novartis AG	5,081	$796,293
6	MRK	Merck & Co., Inc. This page	3,944	$506,804

26 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$506,804	3,944	-12.9%	Shares	Sole	2026-08-06
2026-03-31	$544,912	4,530	-3.0%	Shares	Sole	2026-05-06
2025-12-31	$491,353	4,668	+4.1%	Shares	Sole	2026-02-05
2025-09-30	$376,174	4,482	-3.8%	Shares	Sole	2025-11-10
2025-06-30	$368,964	4,661	0.0%	Shares	Sole	2025-08-06
2025-03-31	$418,371	4,661	0.0%	Shares	Sole	2025-05-12
2024-12-31	$463,676	4,661	-6.7%	Shares	Sole	2025-02-03
2024-09-30	$567,232	4,995	-7.2%	Shares	Sole	2024-11-15
2024-06-30	$666,539	5,384	+7.8%	Shares	Sole	2024-08-12
2024-03-31	$659,090	4,995	0.0%	Shares	Sole	2024-05-02
2023-12-31	$544,554	4,995	-2.0%	Shares	Sole	2024-02-02
2023-09-30	$524,530	5,095	0.0%	Shares	Sole	2023-11-08
2023-06-30	$587,912	5,095	0.0%	Shares	Sole	2023-08-15
2023-03-31	$542,057	5,095	0.0%	Shares	Sole	2023-05-03
2022-12-31	$565,290	5,095	-69.5%	Shares	Sole	2023-02-02
2022-09-30	$1,440,097	16,722	+200.0%	Shares	Sole	2022-11-09
2022-06-30	$508,181	5,574	0.0%	Shares	Sole	2022-08-11
2022-03-31	$457,346	5,574	-0.5%	Shares	Sole	2022-05-18
2021-12-31	$429,260	5,601	+3.1%	Shares	Sole	2022-02-08
2021-09-30	$408,222	5,435	-0.2%	Shares	Sole	2021-11-12
2021-06-30	$423,457	5,445	0.0%	Shares	Sole	2021-08-09
2021-03-31	$419,755	5,445	-6.8%	Shares	Sole	2021-05-12
2020-12-31	$478,119	5,845	-2.5%	Shares	Sole	2021-02-04
2020-09-30	$497,285	5,995	0.0%	Shares	Sole	2020-11-09
2020-06-30	$463,593	5,995	0.0%	Shares	Sole	2020-08-10
2020-03-31	$461,254	5,995	—	Shares	Sole	2020-05-07
No filing history on record for this holder in this stock.