Group One Trading
MRK icon

Group One Trading’s Merck MRK Stock Holding History

Group One Trading’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 		$47.4M Sell
393,900
-94,300
-19% -$10.9M 0.09% 205
2025
Q4 		$51.4M Buy
488,200
+82,500
+20% +$7.74M 0.09% 199
2025
Q3 		$34.1M Buy
405,700
+51,400
+15% +$4.23M 0.06% 293
2025
Q2 		$28M Sell
354,300
-276,100
-44% -$21.9M 0.06% 305
2025
Q1 		$56.6M Sell
630,400
-12,300
-2% -$1.15M 0.16% 90
2024
Q4 		$63.9M Buy
642,700
+3,000
+0.5% +$309K 0.15% 94
2024
Q3 		$72.6M Buy
639,700
+525,100
+458% +$62.4M 0.21% 63
2024
Q2 		$14.2M Sell
114,600
-224,400
-66% -$28.9M 0.06% 296
2024
Q1 		$44.7M Buy
339,000
+138,200
+69% +$17M 0.17% 78
2023
Q4 		$21.9M Sell
200,800
-277,400
-58% -$28.8M 0.06% 309
2023
Q3 		$49.2M Buy
478,200
+82,300
+21% +$8.87M 0.17% 72
2023
Q2 		$45.7M Sell
395,900
-85,200
-18% -$9.67M 0.15% 78
2023
Q1 		$51.2M Sell
481,100
-938,500
-66% -$101M 0.18% 61
2022
Q4 		$158M Sell
1,419,600
-307,000
-18% -$31.4M 0.37% 31
2022
Q3 		$149M Sell
1,726,600
-97,100
-5% -$8.67M 0.29% 30
2022
Q2 		$166M Sell
1,823,700
-1,760,400
-49% -$156M 0.26% 37
2022
Q1 		$294M Sell
3,584,100
-602,200
-14% -$47.5M 0.29% 30
2021
Q4 		$321M Buy
4,186,300
+3,070,200
+275% +$245M 0.26% 40
2021
Q3 		$83.8M Sell
1,116,100
-313,600
-22% -$23.9M 0.09% 143
2021
Q2 		$111M Buy
1,429,700
+569,606
+66% +$42.4M 0.13% 100
2021
Q1 		$63.3M Buy
860,094
+534,061
+164% +$39.4M 0.09% 161
2020
Q4 		$25.4M Sell
326,033
-62,251
-16% -$4.76M 0.04% 353
2020
Q3 		$30.7M Sell
388,284
-107,001
-22% -$8.38M 0.1% 165
2020
Q2 		$36.5M Buy
495,285
+63,299
+15% +$4.77M 0.17% 97
2020
Q1 		$31.7M Buy
431,986
+155,628
+56% +$12.2M 0.26% 61
2019
Q4 		$24M Sell
276,358
-19,283
-7% -$1.58M 0.16% 113
2019
Q3 		$23.7M Buy
295,641
+148,187
+100% +$11.9M 0.19% 87
2019
Q2 		$11.8M Buy
147,454
+14,148
+11% +$1.08M 0.11% 198
2019
Q1 		$10.6M Sell
133,306
-280,235
-68% -$21M 0.12% 184
2018
Q4 		$30.2M Sell
413,541
-531,965
-56% -$37.6M 0.26% 60
2018
Q3 		$64M Buy
945,506
+192,937
+26% +$12.3M 0.51% 18
2018
Q2 		$43.6M Buy
752,569
+47,789
+7% +$2.7M 0.37% 28
2018
Q1 		$36.6M Buy
704,780
+322,260
+84% +$17.4M 0.37% 29
2017
Q4 		$20.5M Buy
382,520
+122,197
+47% +$6.77M 0.14% 134
2017
Q3 		$15.9M Sell
260,323
-85,307
-25% -$5.17M 0.14% 137
2017
Q2 		$21.1M Buy
345,630
+27,772
+9% +$1.69M 0.22% 78
2017
Q1 		$19.3M Buy
317,858
+249,109
+362% +$15.1M 0.22% 76
2016
Q4 		$3.86M Sell
68,749
-26,619
-28% -$1.56M 0.04% 543
2016
Q3 		$5.68M Sell
95,368
-58,059
-38% -$3.4M 0.06% 363
2016
Q2 		$8.43M Buy
153,427
+78,495
+105% +$4.18M 0.1% 220
2016
Q1 		$3.78M Buy
74,932
+31,964
+74% +$1.57M 0.05% 454
2015
Q4 		$2.17M Sell
42,968
-76,609
-64% -$3.86M 0.03% 804
2015
Q3 		$5.63M Buy
119,577
+19,283
+19% +$1.02M 0.08% 316
2015
Q2 		$5.45M Buy
+100,294
New +$5.62M 0.08% 293

Other funds holding MRK

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
Wellington Management Group
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
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.56T AUM 27.86% 1-Year Est. Return
Charles Schwab
Charles Schwab San Francisco, California $654B AUM 26.35% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return

Group One Trading's MRK Position: Q4 2025 in Review

Group One Trading sold out of Merck (MRK) in Q4 2025, closing a stake of 56,167 shares — an estimated $5.27M sold.

Group One Trading first reported a position in MRK in Q2 2013 and held it in 15 quarters. The position peaked at $33.3M in Q3 2021. 3,651 funds tracked by Wall St. Rank hold MRK as of Q4 2025.

  • Group One Trading reported no remaining Merck position as of Q4 2025 after selling out during the quarter.
  • Group One Trading sold 56,167 Merck shares in Q4 2025, an estimated $5.27M.
  • Group One Trading first reported a position in Merck in Q2 2013 and held it in 15 quarters.
  • Group One Trading's Merck position peaked at $33.3M in Q3 2021.
  • 3,651 funds tracked by Wall St. Rank held Merck as of Q4 2025.

Based on Group One Trading's 13F filing for Q4 2025, filed 12 Feb 2026.