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CSS LLC’s Merck MRK Stock Holding History

CSS LLC’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
2022
Q3 		– Sell
-25,000
Closed -$2.28M – 1129
2022
Q2 		$2.28M Buy
+25,000
New +$2.22M 0.09% 265
2020
Q4 		– Sell
-55,020
Closed -$4.36M – 902
2020
Q3 		$4.36M Buy
+55,020
New +$4.31M 0.21% 101
2020
Q2 		– Sell
-10,480
Closed -$769K – 738
2020
Q1 		$769K Buy
+10,480
New +$824K 0.06% 242

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

CSS LLC's MRK Position: Q1 2026 in Review

CSS LLC reduced its Merck (MRK) stake by 13% in Q1 2026, selling an estimated $238K and leaving 13,865 shares worth $1.67M. The position accounts for 0.08% of the portfolio, ranked #192.

CSS LLC first reported a position in MRK in Q2 2019 and has held it in 20 quarters since. The position peaked at $1.82M in Q2 2025. 3,779 funds tracked by Wall St. Rank hold MRK as of Q1 2026.

  • CSS LLC held 13,865 shares of Merck worth $1.67M as of Q1 2026.
  • CSS LLC sold 2,060 Merck shares in Q1 2026, an estimated $238K.
  • Merck made up 0.08% of CSS LLC's portfolio in Q1 2026, its #192 holding.
  • CSS LLC first reported a position in Merck in Q2 2019 and has held it in 20 quarters since.
  • CSS LLC's Merck position peaked at $1.82M in Q2 2025.
  • 3,779 funds tracked by Wall St. Rank held Merck as of Q1 2026.

Based on CSS LLC's 13F filing for Q1 2026, filed 15 May 2026.