BlackRock’s Merck MRK Stock Holding History

BlackRock’s Portfolio MRK Stock Details MRK Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	$27.2B	Buy	225,830,330 +6,734,865	+3%	+$778M	0.47%	28
2025 Q4	$23.1B	Buy	219,095,465 +4,218,865	+2%	+$396M	0.39%	35
2025 Q3	$18B	Sell	214,876,600 -3,464,232	-2%	-$285M	0.32%	41
2025 Q2	$17.3B	Sell	218,340,832 -7,057,399	-3%	-$561M	0.33%	41
2025 Q1	$20.2B	Buy	225,398,231 +3,316,386	+1%	+$310M	0.42%	30
2024 Q4	$22.1B	Buy	222,081,845 +10,022,108	+5%	+$1.03B	0.45%	28
2024 Q3	$24.1B	Buy	212,059,737 +4,764,420	+2%	+$566M	0.51%	24
2024 Q2	$25.7B	Buy	207,295,317 +279,840	+0.1%	+$36M	0.58%	21
2024 Q1	$27.3B	Buy	207,015,477 +5,179,043	+3%	+$638M	0.64%	19
2023 Q4	$22B	Sell	201,836,434 -1,098,587	-0.5%	-$114M	0.56%	23
2023 Q3	$20.9B	Sell	202,935,021 -2,715,229	-1%	-$293M	0.6%	22
2023 Q2	$23.7B	Sell	205,650,250 -3,451,598	-2%	-$392M	0.65%	20
2023 Q1	$22.2B	Sell	209,101,848 -5,629,537	-3%	-$608M	0.66%	20
2022 Q4	$23.8B	Buy	214,731,385 +223,625	+0.1%	+$22.9M	0.75%	17
2022 Q3	$18.5B	Sell	214,507,760 -1,160,337	-0.5%	-$104M	0.63%	21
2022 Q2	$19.7B	Buy	215,668,097 +11,545,571	+6%	+$1.02B	0.63%	23
2022 Q1	$16.7B	Buy	204,122,526 +5,898,263	+3%	+$465M	0.45%	32
2021 Q4	$15.2B	Buy	198,224,263 +10,326,974	+5%	+$823M	0.39%	39
2021 Q3	$14.1B	Buy	187,897,289 +741,796	+0.4%	+$56.4M	0.4%	37
2021 Q2	$14.6B	Sell	187,155,493 -16,081,481	-8%	-$1.2B	0.41%	33
2021 Q1	$14.9B	Sell	203,236,974 -1,141,789	-0.6%	-$84.2M	0.44%	30
2020 Q4	$16B	Sell	204,378,763 -1,960,799	-1%	-$150M	0.51%	24
2020 Q3	$16.3B	Sell	206,339,562 -701,529	-0.3%	-$54.9M	0.6%	21
2020 Q2	$15.3B	Buy	207,041,091 +1,271,187	+0.6%	+$95.7M	0.61%	21
2020 Q1	$15.1B	Buy	205,769,904 +5,829,084	+3%	+$458M	0.74%	17
2019 Q4	$17.4B	Buy	199,940,820 +4,906,029	+3%	+$403M	0.67%	21
2019 Q3	$15.7B	Sell	195,034,791 -6,038,061	-3%	-$484M	0.66%	20
2019 Q2	$16.1B	Buy	201,072,852 +4,608,664	+2%	+$353M	0.69%	19
2019 Q1	$15.6B	Sell	196,464,188 -7,465,651	-4%	-$558M	0.7%	19
2018 Q4	$14.9B	Buy	203,929,839 +10,810,655	+6%	+$763M	0.75%	16
2018 Q3	$13.1B	Sell	193,119,184 -1,334,002	-0.7%	-$85M	0.57%	25
2018 Q2	$11.3B	Buy	194,453,186 +871,143	+0.5%	+$49.1M	0.52%	27
2018 Q1	$10.1B	Sell	193,582,043 -139,047	-0.1%	-$7.51M	0.48%	31
2017 Q4	$10.4B	Buy	193,721,090 +1,315,592	+0.7%	+$72.9M	0.49%	30
2017 Q3	$11.8B	Sell	192,405,498 -1,471,767	-0.8%	-$89.2M	0.59%	24
2017 Q2	$11.9B	Buy	193,877,265 +1,922,556	+1%	+$117M	0.63%	21
2017 Q1	$11.6B	Buy	191,954,709 +185,193,224	+2,739%	+$11.2B	0.64%	21
2016 Q4	$380M	Buy	6,761,485 +120,681	+2%	+$7.06M	0.54%	33
2016 Q3	$395M	Sell	6,640,804 -217,872	-3%	-$12.7M	0.57%	31
2016 Q2	$377M	Buy	6,858,676 +595,560	+10%	+$31.7M	0.57%	33
2016 Q1	$316M	Sell	6,263,116 -1,806,159	-22%	-$88.5M	0.51%	35
2015 Q4	$407M	Sell	8,069,275 -121,876	-1%	-$6.14M	0.6%	33
2015 Q3	$386M	Buy	8,191,151 +240,599	+3%	+$12.8M	0.61%	31
2015 Q2	$432M	Sell	7,950,552 -570,204	-7%	-$32M	0.64%	24
2015 Q1	$467M	Sell	8,520,756 -193,995	-2%	-$11M	0.65%	22
2014 Q4	$472M	Buy	8,714,751 +762,192	+10%	+$42.5M	0.68%	23
2014 Q3	$450M	Sell	7,952,559 -939,945	-11%	-$52.8M	0.66%	25
2014 Q2	$491M	Sell	8,892,504 -306,792	-3%	-$16.7M	0.73%	23
2014 Q1	$498M	Buy	9,199,296 +318,543	+4%	+$16.5M	0.8%	20
2013 Q4	$424M	Buy	8,880,753 +553,824	+7%	+$25.3M	0.69%	24
2013 Q3	$378M	Sell	8,326,929 -1,276,729	-13%	-$58.3M	0.71%	25
2013 Q2	$426M	Buy	+9,603,658	New	+$429M	0.84%	23

Other funds holding MRK

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

Wellington Management Group Boston, Massachusetts $535B AUM 26.23% 1-Year Est. Return

VPM

Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM

Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

JP Morgan Chase New York $1.56T AUM 27.86% 1-Year Est. Return

Charles Schwab San Francisco, California $654B AUM 26.35% 1-Year Est. Return

Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return

Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return

Bank of America Charlotte, North Carolina $1.37T AUM 24.88% 1-Year Est. Return

BlackRock's MRK Position: Q1 2026 in Review

BlackRock increased its Merck (MRK) stake by 3.1% in Q1 2026, buying an estimated $778M and bringing the position to 225,830,330 shares worth $27.2B. The position accounts for 0.47% of the portfolio, ranked #28.

BlackRock first reported a position in MRK in Q2 2013 and has held it in 52 quarters since. The position peaked at $27.3B in Q1 2024. 3,780 funds tracked by Wall St. Rank hold MRK as of Q1 2026.

BlackRock held 225,830,330 shares of Merck worth $27.2B as of Q1 2026.
BlackRock bought 6,734,865 Merck shares in Q1 2026, an estimated $778M.
Merck made up 0.47% of BlackRock's portfolio in Q1 2026, its #28 holding.
BlackRock first reported a position in Merck in Q2 2013 and has held it in 52 quarters since.
BlackRock's Merck position peaked at $27.3B in Q1 2024.
3,780 funds tracked by Wall St. Rank held Merck as of Q1 2026.

Based on BlackRock's 13F filing for Q1 2026, filed 13 May 2026.