Does D. E. Shaw own MRK stock?

Yes. As of its Q2 2026 13F, D. E. Shaw holds 2,738,023 shares of MRK (Merck), worth $351.8M.

How many shares of MRK does D. E. Shaw own?

As of its Q2 2026 13F, D. E. Shaw holds 2,738,023 shares of MRK (Merck).

As of its Q2 2026 13F, D. E. Shaw's MRK position is worth $351.8M.

In Q2 2026, D. E. Shaw reduced its MRK position by 659,559 shares (-19.4%).

D. E. Shaw already held MRK in its Q4 2018 13F, the earliest on record, and has listed it in 31 quarterly 13F filings.

Position history for DED. E. Shaw & Co., Inc.'s holdings in MERCK & CO INC

Current Value

$351.8M

Current Shares

2.7M

Total Value Change

-$44M

Total Shares Change

-2.4M

Quarter-by-Quarter History

Quarter	Action	Shares	Change	Value	Weight	Price	Conviction
2026-Q2 Latest	Decreased	2.7M	-19.4%	$351.8M	0.2%	$127.75	0
2026-Q1	Decreased	3.4M	-3.4%	$408.7M	0.2%	$118.73	0
2025-Q4	Increased	3.5M	+1.5%	$370.4M	0.2%	$103.13	38
2025-Q3	Decreased	3.5M	-66.5%	$291.1M	0.2%	$81.54	0
2025-Q2	Increased	10.4M	+11.3%	$820.7M	0.6%	$76.15	50
2025-Q1	Increased	9.3M	+46.1%	$835.8M	0.7%	$85.49	61
2024-Q4	Decreased	6.4M	-5.7%	$634.2M	0.5%	$93.94	0
2024-Q3	Increased	6.8M	+184.2%	$767.8M	0.7%	$106.38	72
2024-Q2	Increased	2.4M	+17.7%	$294.5M	0.3%	$115.20	43
2024-Q1	Decreased	2M	-17.2%	$266.7M	0.2%	$122.06	0
2023-Q4	Increased	2.4M	+44.3%	$266.3M	0.2%	$100.21	50
2023-Q3	Increased	1.7M	+28.8%	$174.2M	0.2%	$93.95	46
2023-Q2	Decreased	1.3M	-38.1%	$151.6M	0.2%	$104.59	0
2023-Q1	Increased	2.1M	+58.8%	$225.9M	0.2%	$95.79	52
2022-Q4	Increased	1.3M	+1185.9%	$148.4M	0.2%	$99.21	58
2022-Q3	Decreased	103,993	-71.7%	$9M	0.0%	$76.50	0
2022-Q2	Decreased	367,890	-46.0%	$33.5M	0.0%	$80.34	0
2022-Q1	Increased	680,627	+0.7%	$55.8M	0.1%	$71.71	30
2021-Q4	Decreased	675,596	-81.0%	$51.8M	0.0%	$66.39	0
2021-Q3	Decreased	3.5M	-8.4%	$266.4M	0.2%	$64.46	0
2021-Q2	Decreased	3.9M	-60.5%	$301.2M	0.3%	$66.15	0
2021-Q1	Decreased	9.8M	-1.1%	$755.7M	0.7%	$62.03	0
2020-Q4	Increased	9.9M	+68.2%	$811.2M	0.7%	$65.25	66
2020-Q3	Decreased	5.9M	-31.8%	$489.1M	0.5%	$65.65	0
2020-Q2	Increased	8.6M	+65.5%	$668.3M	0.8%	$60.76	65
2020-Q1	Increased	5.2M	+124.9%	$401.7M	0.6%	$59.98	71
2019-Q4	Decreased	2.3M	-42.2%	$211.2M	0.2%	$70.32	0
2019-Q3	Decreased	4M	-18.9%	$337.9M	0.4%	$64.64	0
2019-Q2	Decreased	5M	-17.0%	$415.3M	0.5%	$63.96	0
2019-Q1	Increased	6M	+15.2%	$496.2M	0.6%	$63.02	51
2018-Q4	First report	5.2M	-	$395.8M	0.5%	$57.51	0