Stocks
MRK
CITADEL ADVISORS LLC

CITADEL ADVISORS LLC

CIK

0001423053

City

Chicago

State / Country

Stock

MRK — Merck & Co., Inc.

Holdings in MRK

Position Over Time

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2025-12-31	$410,577,156	3,900,600	+15.5%	Shares	Defined	2026-02-17
2025-12-31	$355,557,754	3,377,900	-50.5%	Shares	Defined	2026-02-17
2025-12-31	$718,013,301	6,821,331	+604.6%	Shares	Defined	2026-02-17
2025-09-30	$81,248,771	968,054	-83.6%	Shares	Defined	2025-11-14
2025-09-30	$496,655,775	5,917,500	+52.3%	Shares	Defined	2025-11-14
2025-09-30	$326,101,622	3,885,400	-33.7%	Shares	Defined	2025-11-14
2025-06-30	$463,679,700	5,857,500	+31.8%	Shares	Defined	2025-08-14
2025-06-30	$351,937,444	4,445,900	+23.6%	Shares	Defined	2025-08-14
2025-03-31	$322,992,384	3,598,400	-33.6%	Shares	Defined	2025-05-15
2025-03-31	$486,265,824	5,417,400	+164.4%	Shares	Defined	2025-05-15
2025-03-31	$183,894,811	2,048,739	-47.1%	Shares	Defined	2025-05-15
2024-12-31	$385,246,248	3,872,600	+180.9%	Shares	Defined	2025-02-14
2024-12-31	$137,133,180	1,378,500	-73.9%	Shares	Defined	2025-02-14
2024-12-31	$525,424,510	5,281,710	+96.0%	Shares	Defined	2025-02-14
2024-09-30	$305,964,708	2,694,300	-61.7%	Shares	Defined	2024-11-14
2024-09-30	$799,654,202	7,041,689	+410.8%	Shares	Defined	2024-11-14
2024-09-30	$156,542,460	1,378,500	-78.0%	Shares	Defined	2024-11-14
2024-06-30	$776,650,881	6,273,432	+157.3%	Shares	Defined	2024-08-14
2024-06-30	$301,836,780	2,438,100	+95.6%	Shares	Defined	2024-08-14
2024-06-30	$154,279,560	1,246,200	-27.9%	Shares	Defined	2024-08-14
2024-03-31	$228,141,550	1,729,000	-77.2%	Shares	Defined	2024-05-15
2024-03-31	$999,550,278	7,575,220	+167.1%	Shares	Defined	2024-05-15
2024-03-31	$374,210,200	2,836,000	-55.1%	Shares	Defined	2024-05-15
2023-12-31	$688,807,002	6,318,171	+371.6%	Shares	Defined	2024-02-14
2023-12-31	$146,043,192	1,339,600	-50.9%	Shares	Defined	2024-02-14
2023-12-31	$297,700,914	2,730,700	-1.3%	Shares	Defined	2024-02-14
2023-09-30	$284,945,010	2,767,800	-58.5%	Shares	Defined	2023-11-14
2023-09-30	$687,408,165	6,677,107	+318.3%	Shares	Defined	2023-11-14
2023-09-30	$164,349,380	1,596,400	-29.0%	Shares	Defined	2023-11-14
2023-06-30	$259,419,798	2,248,200	+22.2%	Shares	Defined	2023-08-14
2023-06-30	$212,302,714	1,839,871	+12.9%	Shares	Defined	2023-08-14
2023-06-30	$188,062,622	1,629,800	+111.3%	Shares	Defined	2023-08-14
2023-03-31	$82,042,009	771,144	-68.2%	Shares	Defined	2023-05-15
2023-03-31	$258,283,003	2,427,700	-2.7%	Shares	Defined	2023-05-15
2023-03-31	$265,443,050	2,495,000	-30.5%	Shares	Defined	2023-05-15
2022-12-31	$398,077,505	3,587,900	+44.3%	Shares	Defined	2023-02-14
2022-12-31	$275,895,814	2,486,668	-42.0%	Shares	Defined	2023-02-14
2022-12-31	$475,431,845	4,285,100	+13.3%	Shares	Defined	2023-02-14
2022-09-30	$325,611,108	3,780,900	+11.6%	Shares	Defined	2022-11-14
2022-09-30	$291,707,040	3,387,216	+57.6%	Shares	Defined	2022-11-14
2022-09-30	$185,097,716	2,149,300	-0.3%	Shares	Defined	2022-11-14
2022-06-30	$196,516,022	2,155,490	-27.4%	Shares	Defined	2022-08-15
2022-06-30	$270,729,315	2,969,500	+31.8%	Shares	Defined	2022-08-15
2022-06-30	$205,460,712	2,253,600	-37.9%	Shares	Defined	2022-08-15
2022-03-31	$297,546,120	3,626,400	+86.3%	Shares	Defined	2022-05-16
2022-03-31	$159,743,145	1,946,900	-42.5%	Shares	Defined	2022-05-16
2022-03-31	$278,035,040	3,388,605	-20.6%	Shares	Defined	2022-05-16
2021-12-31	$327,237,472	4,269,800	+21.6%	Shares	Defined	2022-02-14
2021-12-31	$269,113,696	3,511,400	+58.4%	Shares	Defined	2022-02-14
2021-12-31	$169,926,667	2,217,206	—	Shares	Defined	2022-02-14