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Costello Asset Management’s Merck MRK Stock Holding History

Costello Asset Management’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 		$1.75M Sell
13,648
-960
-7% -$112K 0.53% 35
2026
Q1 		$1.76M Sell
14,608
-831
-5% -$95.9K 0.61% 33
2025
Q4 		$1.63M Sell
15,439
-1,294
-8% -$121K 0.54% 36
2025
Q3 		$1.4M Sell
16,733
-27,414
-62% -$2.26M 0.47% 39
2025
Q2 		$3.49M Sell
44,147
-2,215
-5% -$176K 1.31% 21
2025
Q1 		$4.16M Buy
46,362
+1,765
+4% +$165K 1.69% 15
2024
Q4 		$4.44M Buy
44,597
+7,325
+20% +$755K 2.93% 10
2024
Q3 		$4.23M Buy
37,272
+2,947
+9% +$350K 2.83% 10
2024
Q2 		$4.25M Sell
34,325
-537
-2% -$69.2K 3.17% 10
2024
Q1 		$4.6M Sell
34,862
-1,195
-3% -$147K 3.29% 10
2023
Q4 		$3.93M Buy
36,057
+2,937
+9% +$305K 3.26% 11
2023
Q3 		$3.41M Buy
33,120
+2,724
+9% +$294K 3.13% 11
2023
Q2 		$3.51M Buy
30,396
+213
+0.7% +$24.2K 3% 11
2023
Q1 		$3.21M Sell
30,183
-11,747
-28% -$1.27M 3.31% 9
2022
Q4 		$4.65M Sell
41,930
-1,010
-2% -$103K 4.19% 6
2022
Q3 		$3.7M Sell
42,940
-2,140
-5% -$191K 3.49% 6
2022
Q2 		$4.11M Sell
45,080
-1,802
-4% -$160K 3.55% 7
2022
Q1 		$3.85M Sell
46,882
-1,366
-3% -$108K 2.64% 11
2021
Q4 		$3.7M Buy
48,248
+63
+0.1% +$5.02K 2.26% 15
2021
Q3 		$3.62M Sell
48,185
-6,088
-11% -$463K 2.31% 16
2021
Q2 		$4.22M Sell
54,273
-18,167
-25% -$1.35M 2.77% 13
2021
Q1 		$5.33M Buy
72,440
+62
+0.1% +$4.57K 3.68% 8
2020
Q4 		$5.65M Buy
72,378
+4,914
+7% +$376K 4.27% 6
2020
Q3 		$5.34M Buy
67,464
+1,569
+2% +$123K 4.7% 6
2020
Q2 		$4.86M Buy
+65,895
New +$4.96M 4.78% 7
2019
Q3 		$4.37M Sell
54,405
-1,998
-4% -$160K 5.22% 4
2019
Q2 		$4.51M Sell
56,403
-1,517
-3% -$116K 5.14% 4
2019
Q1 		$4.6M Sell
57,920
-3,830
-6% -$286K 5.5% 4
2018
Q4 		$4.5M Buy
+61,750
New +$4.36M 5.83% 4

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

Costello Asset Management's MRK Position: Q2 2026 in Review

Costello Asset Management reduced its Merck (MRK) stake by 6.6% in Q2 2026, selling an estimated $112K and leaving 13,648 shares worth $1.75M. The position accounts for 0.53% of the portfolio, ranked #35.

Costello Asset Management first reported a position in MRK in Q4 2018 and has held it in 29 quarters since. The position peaked at $5.65M in Q4 2020. 3,833 funds tracked by Wall St. Rank hold MRK as of Q2 2026.

  • Costello Asset Management held 13,648 shares of Merck worth $1.75M as of Q2 2026.
  • Costello Asset Management sold 960 Merck shares in Q2 2026, an estimated $112K.
  • Merck made up 0.53% of Costello Asset Management's portfolio in Q2 2026, its #35 holding.
  • Costello Asset Management first reported a position in Merck in Q4 2018 and has held it in 29 quarters since.
  • Costello Asset Management's Merck position peaked at $5.65M in Q4 2020.
  • 3,833 funds tracked by Wall St. Rank held Merck as of Q2 2026.

Based on Costello Asset Management's 13F filing for Q2 2026, filed 28 Jul 2026.