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
2025
Q4 		– Sell
-56,167
Closed -$5.27M – 8781
2025
Q3 		$4.71M Sell
56,167
-38,553
-41% -$3.18M 0.01% 1531
2025
Q2 		$7.5M Buy
+94,720
New +$7.53M 0.02% 1017
2025
Q1 		– Sell
-37,824
Closed -$3.53M – 8091
2024
Q4 		$3.76M Buy
37,824
+32,439
+602% +$3.34M 0.01% 1377
2024
Q3 		$612K Buy
+5,385
New +$640K ﹤0.01% 2707
2021
Q4 		– Sell
-442,779
Closed -$35.3M – 8611
2021
Q3 		$33.3M Buy
442,779
+183,912
+71% +$14M 0.04% 402
2021
Q2 		$20.1M Sell
258,867
-45,772
-15% -$3.4M 0.02% 628
2021
Q1 		$22.4M Buy
304,639
+295,053
+3,078% +$21.8M 0.03% 490
2020
Q4 		$748K Sell
9,586
-96
-1% -$7.34K ﹤0.01% 2907
2020
Q3 		$766K Buy
+9,682
New +$758K ﹤0.01% 2443
2019
Q1 		– Sell
-17,554
Closed -$1.31M – 5149
2018
Q4 		$1.28M Buy
+17,554
New +$1.24M 0.01% 1328
2017
Q1 		– Sell
-50,929
Closed -$3.09M – 4868
2016
Q4 		$2.86M Buy
+50,929
New +$2.98M 0.03% 720
2015
Q1 		– Sell
-210
Closed -$11K – 5024
2014
Q4 		$11K Buy
210
+105
+100% +$5.85K ﹤0.01% 4204
2014
Q3 		$6K Sell
105
-105
-50% -$5.9K ﹤0.01% 4669
2014
Q2 		$12K Buy
+210
New +$11.5K ﹤0.01% 4455
2013
Q3 		– Sell
-1,048
Closed -$46K – 5452
2013
Q2 		$46K Buy
+1,048
New +$46.8K ﹤0.01% 3505

Other funds holding MRK

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Wellington Management Group
Wellington Management Group Boston, Massachusetts $580B AUM 38.23% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Charles Schwab
Charles Schwab San Francisco, California $751B AUM 38.74% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.81T AUM 41.13% 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. 3,660 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.
  • 3,660 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.