Marshall Wace
MRK icon

Marshall Wace’s Merck MRK Stock Holding History

Marshall Wace’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
Q2 		$12.8K Buy
+100
New +$11.7K ﹤0.01% 3066
2025
Q4 		– Sell
-518,200
Closed -$43.5M – 3276
2025
Q3 		$43.5M Buy
518,200
+350,200
+208% +$28.8M 0.04% 363
2025
Q2 		$13.3M Buy
+168,000
New +$13.4M 0.02% 733
2025
Q1 		– Sell
-140,000
Closed -$13.9M – 2914
2024
Q4 		$13.9M Buy
+140,000
New +$14.4M 0.02% 674
2021
Q4 		– Sell
-71,000
Closed -$5.33M – 4146
2021
Q3 		$5.33M Buy
+71,000
New +$5.4M 0.02% 901

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

Marshall Wace's MRK Position: Q2 2026 in Review

Marshall Wace sold out of Merck (MRK) in Q2 2026, closing a stake of 2,778,301 shares — an estimated $325M sold.

Marshall Wace first reported a position in MRK in Q2 2014 and held it in 41 quarters. The position peaked at $557M in Q1 2022. 3,834 funds tracked by Wall St. Rank hold MRK as of Q2 2026.

  • Marshall Wace reported no remaining Merck position as of Q2 2026 after selling out during the quarter.
  • Marshall Wace sold 2,778,301 Merck shares in Q2 2026, an estimated $325M.
  • Marshall Wace first reported a position in Merck in Q2 2014 and held it in 41 quarters.
  • Marshall Wace's Merck position peaked at $557M in Q1 2022.
  • 3,834 funds tracked by Wall St. Rank held Merck as of Q2 2026.

Based on Marshall Wace's 13F filing for Q2 2026, filed 13 Aug 2026.