Marshall Wace’s Merck MRK Stock Holding History
Bought
Maintained
Sold
| Quarter | Market Value | Status | Shares |
Change in Stake | Trade Value | Portfolio Weight | Portfolio Position | |
|---|---|---|---|---|---|---|---|---|
|
2026
Q1 | $334M | Sell |
2,778,301
-1,191,168
| -30% | -$138M | 0.33% | 35 |
|
|
2025
Q4 | $418M | Buy |
3,969,469
+3,085,569
| +349% | +$290M | 0.38% | 35 |
|
|
2025
Q3 | $74.2M | Sell |
883,900
-2,260,600
| -72% | -$186M | 0.08% | 234 |
|
|
2025
Q2 | $249M | Buy |
3,144,500
+3,136,893
| +41,237% | +$249M | 0.28% | 56 |
|
|
2025
Q1 | $683K | Buy |
7,607
+7,276
| +2,198% | +$679K | ﹤0.01% | 1940 |
|
|
2024
Q4 | $32.9K | Sell |
331
-3,029
| -90% | -$312K | ﹤0.01% | 2502 |
|
|
2024
Q3 | $382K | Sell |
3,360
-2,580,823
| -100% | -$307M | ﹤0.01% | 2030 |
|
|
2024
Q2 | $320M | Buy |
2,584,183
+634,194
| +33% | +$81.7M | 0.43% | 31 |
|
|
2024
Q1 | $257M | Sell |
1,949,989
-2,039,971
| -51% | -$251M | 0.39% | 38 |
|
|
2023
Q4 | $435M | Buy |
3,989,960
+1,938,555
| +94% | +$201M | 0.74% | 15 |
|
|
2023
Q3 | $211M | Buy |
2,051,405
+1,875,318
| +1,065% | +$202M | 0.43% | 35 |
|
|
2023
Q2 | $20.3M | Buy |
+176,087
| New | +$20M | 0.04% | 475 |
|
|
2023
Q1 | – | Sell |
-1,033,806
| Closed | -$115M | – | 2946 |
|
|
2022
Q4 | $115M | Buy |
1,033,806
+372,519
| +56% | +$38.1M | 0.26% | 78 |
|
|
2022
Q3 | $57M | Sell |
661,287
-5,140,458
| -89% | -$459M | 0.12% | 167 |
|
|
2022
Q2 | $529M | Sell |
5,801,745
-983,823
| -14% | -$87.2M | 1.09% | 4 |
|
|
2022
Q1 | $557M | Buy |
6,785,568
+6,746,481
| +17,260% | +$532M | 1.05% | 8 |
|
|
2021
Q4 | $3M | Buy |
39,087
+36,573
| +1,455% | +$2.91M | 0.01% | 1785 |
|
|
2021
Q3 | $189K | Buy |
+2,514
| New | +$191K | ﹤0.01% | 2812 |
|
|
2021
Q1 | – | Sell |
-56,735
| Closed | -$4.43M | – | 2725 |
|
|
2020
Q4 | $4.43M | Sell |
56,735
-216,783
| -79% | -$16.6M | 0.02% | 615 |
|
|
2020
Q3 | $21.6M | Buy |
273,518
+102,053
| +60% | +$7.99M | 0.14% | 157 |
|
|
2020
Q2 | $12.7M | Sell |
171,465
-165,799
| -49% | -$12.5M | 0.09% | 230 |
|
|
2020
Q1 | $24.8M | Sell |
337,264
-34,308
| -9% | -$2.7M | 0.25% | 91 |
|
|
2019
Q4 | $32.2M | Buy |
371,572
+155,096
| +72% | +$12.7M | 0.22% | 107 |
|
|
2019
Q3 | $17.4M | Sell |
216,476
-270,078
| -56% | -$21.6M | 0.14% | 174 |
|
|
2019
Q2 | $38.9M | Buy |
486,554
+255,864
| +111% | +$19.6M | 0.32% | 52 |
|
|
2019
Q1 | $18.3M | Buy |
230,690
+90,295
| +64% | +$6.75M | 0.17% | 144 |
|
|
2018
Q4 | $10.2M | Buy |
140,395
+74,269
| +112% | +$5.24M | 0.1% | 233 |
|
|
2018
Q3 | $4.48M | Buy |
66,126
+31,125
| +89% | +$1.98M | 0.04% | 479 |
|
|
2018
Q2 | $2.03M | Buy |
+35,001
| New | +$1.97M | 0.03% | 427 |
|
|
2017
Q3 | – | Sell |
-23,143
| Closed | -$1.41M | – | 391 |
|
|
2017
Q2 | $1.41M | Buy |
+23,143
| New | +$1.41M | 0.06% | 155 |
|
|
2017
Q1 | – | Sell |
-503,679
| Closed | -$28.3M | – | 583 |
|
|
2016
Q4 | $28.3M | Sell |
503,679
-800,523
| -61% | -$46.8M | 0.19% | 151 |
|
|
2016
Q3 | $77.7M | Buy |
1,304,202
+1,235,647
| +1,802% | +$72.3M | 0.55% | 39 |
|
|
2016
Q2 | $3.77M | Sell |
68,555
-152,471
| -69% | -$8.11M | 0.03% | 454 |
|
|
2016
Q1 | $11.2M | Sell |
221,026
-245,208
| -53% | -$12M | 0.11% | 201 |
|
|
2015
Q4 | $23.5M | Buy |
466,234
+446,394
| +2,250% | +$22.5M | 0.22% | 113 |
|
|
2015
Q3 | $935K | Sell |
19,840
-674,339
| -97% | -$35.8M | 0.01% | 633 |
|
|
2015
Q2 | $37.7M | Buy |
694,179
+552,506
| +390% | +$31M | 0.49% | 55 |
|
|
2015
Q1 | $7.77M | Sell |
141,673
-179,019
| -56% | -$10.1M | 0.1% | 239 |
|
|
2014
Q4 | $17.4M | Sell |
320,692
-158,125
| -33% | -$8.81M | 0.23% | 117 |
|
|
2014
Q3 | $27.1M | Buy |
478,817
+447,231
| +1,416% | +$25.1M | 0.39% | 66 |
|
|
2014
Q2 | $1.74M | Buy |
+31,586
| New | +$1.72M | 0.03% | 417 |
|
Other funds holding MRK
VCM
VPM
Marshall Wace's MRK Position: Q1 2026 in Review
Marshall Wace reduced its Merck (MRK) stake by 30% in Q1 2026, selling an estimated $138M and leaving 2,778,301 shares worth $334M. The position accounts for 0.33% of the portfolio, ranked #35.
Marshall Wace first reported a position in MRK in Q2 2014 and has held it in 41 quarters since. The position peaked at $557M in Q1 2022. 3,778 funds tracked by Wall St. Rank hold MRK as of Q1 2026.
- Marshall Wace held 2,778,301 shares of Merck worth $334M as of Q1 2026.
- Marshall Wace sold 1,191,168 Merck shares in Q1 2026, an estimated $138M.
- Merck made up 0.33% of Marshall Wace's portfolio in Q1 2026, its #35 holding.
- Marshall Wace first reported a position in Merck in Q2 2014 and has held it in 41 quarters since.
- Marshall Wace's Merck position peaked at $557M in Q1 2022.
- 3,778 funds tracked by Wall St. Rank held Merck as of Q1 2026.
Based on Marshall Wace's 13F filing for Q1 2026, filed 15 May 2026.