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 		$15.2M Sell
126,100
-88,700
-41% -$10.2M 0.03% 619
2025
Q4 		$22.6M Sell
214,800
-21,700
-9% -$2.04M 0.04% 476
2025
Q3 		$19.8M Buy
236,500
+76,700
+48% +$6.32M 0.03% 502
2025
Q2 		$12.6M Buy
159,800
+21,100
+15% +$1.68M 0.03% 667
2025
Q1 		$12.4M Sell
138,700
-5,700
-4% -$532K 0.04% 532
2024
Q4 		$14.4M Buy
144,400
+22,000
+18% +$2.27M 0.03% 511
2024
Q3 		$13.9M Buy
122,400
+7,500
+7% +$891K 0.04% 433
2024
Q2 		$14.2M Buy
114,900
+17,800
+18% +$2.29M 0.06% 294
2024
Q1 		$12.8M Sell
97,100
-153,700
-61% -$18.9M 0.05% 334
2023
Q4 		$27.3M Buy
250,800
+168,900
+206% +$17.5M 0.07% 226
2023
Q3 		$8.43M Sell
81,900
-10,800
-12% -$1.16M 0.03% 614
2023
Q2 		$10.7M Buy
92,700
+18,900
+26% +$2.15M 0.03% 484
2023
Q1 		$7.85M Sell
73,800
-82,500
-53% -$8.91M 0.03% 609
2022
Q4 		$17.3M Buy
156,300
+54,400
+53% +$5.56M 0.04% 466
2022
Q3 		$8.78M Sell
101,900
-337,500
-77% -$30.1M 0.02% 810
2022
Q2 		$40.1M Sell
439,400
-26,900
-6% -$2.38M 0.06% 241
2022
Q1 		$38.3M Sell
466,300
-464,400
-50% -$36.6M 0.04% 333
2021
Q4 		$71.3M Buy
930,700
+347,400
+60% +$27.7M 0.06% 218
2021
Q3 		$43.8M Buy
583,300
+82,200
+16% +$6.25M 0.05% 318
2021
Q2 		$39M Buy
501,100
+90,074
+22% +$6.7M 0.05% 337
2021
Q1 		$30.2M Buy
411,026
+115,176
+39% +$8.5M 0.04% 372
2020
Q4 		$23.1M Buy
295,850
+82,792
+39% +$6.33M 0.04% 386
2020
Q3 		$16.9M Buy
213,058
+73,255
+52% +$5.74M 0.05% 324
2020
Q2 		$10.3M Buy
139,803
+105,324
+305% +$7.93M 0.05% 428
2020
Q1 		$2.53M Sell
34,479
-62,985
-65% -$4.95M 0.02% 892
2019
Q4 		$8.46M Buy
97,464
+12,052
+14% +$990K 0.06% 420
2019
Q3 		$6.86M Buy
85,412
+60,050
+237% +$4.81M 0.06% 427
2019
Q2 		$2.03M Buy
25,362
+4,088
+19% +$313K 0.02% 1077
2019
Q1 		$1.69M Sell
21,274
-136,450
-87% -$10.2M 0.02% 1044
2018
Q4 		$11.5M Buy
157,724
+65,081
+70% +$4.59M 0.1% 207
2018
Q3 		$6.27M Sell
92,643
-6,183
-6% -$394K 0.05% 471
2018
Q2 		$5.72M Sell
98,826
-3,773
-4% -$213K 0.05% 474
2018
Q1 		$5.33M Sell
102,599
-61,623
-38% -$3.33M 0.05% 437
2017
Q4 		$8.82M Buy
164,222
+140,013
+578% +$7.76M 0.06% 388
2017
Q3 		$1.48M Sell
24,209
-18,340
-43% -$1.11M 0.01% 1272
2017
Q2 		$2.6M Sell
42,549
-33,745
-44% -$2.05M 0.03% 801
2017
Q1 		$4.63M Sell
76,294
-86,984
-53% -$5.28M 0.05% 434
2016
Q4 		$9.17M Buy
163,278
+60,993
+60% +$3.57M 0.09% 243
2016
Q3 		$6.09M Buy
102,285
+17,921
+21% +$1.05M 0.07% 333
2016
Q2 		$4.64M Buy
84,364
+55,439
+192% +$2.95M 0.05% 425
2016
Q1 		$1.46M Sell
28,925
-19,388
-40% -$950K 0.02% 939
2015
Q4 		$2.44M Buy
48,313
+18,026
+60% +$909K 0.03% 735
2015
Q3 		$1.43M Buy
30,287
+6,707
+28% +$356K 0.02% 1007
2015
Q2 		$1.28M Buy
+23,580
New +$1.32M 0.02% 1041

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.