Citadel Advisors’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 | $450M | Sell |
3,743,200
-157,400
| -4% | -$18.2M | 0.07% | 205 |
|
|
2025
Q4 | $411M | Buy |
3,900,600
+15,200
| +0.4% | +$1.43M | 0.06% | 238 |
|
|
2025
Q3 | $326M | Sell |
3,885,400
-560,500
| -13% | -$46.2M | 0.05% | 307 |
|
|
2025
Q2 | $352M | Buy |
4,445,900
+847,500
| +24% | +$67.4M | 0.06% | 234 |
|
|
2025
Q1 | $323M | Buy |
3,598,400
+2,219,900
| +161% | +$207M | 0.06% | 236 |
|
|
2024
Q4 | $137M | Hold |
1,378,500
| – | – | 0.02% | 564 |
|
|
2024
Q3 | $157M | Buy |
1,378,500
+132,300
| +11% | +$15.7M | 0.03% | 469 |
|
|
2024
Q2 | $154M | Sell |
1,246,200
-482,800
| -28% | -$62.2M | 0.03% | 454 |
|
|
2024
Q1 | $228M | Buy |
1,729,000
+389,400
| +29% | +$48M | 0.04% | 323 |
|
|
2023
Q4 | $146M | Sell |
1,339,600
-256,800
| -16% | -$26.7M | 0.03% | 486 |
|
|
2023
Q3 | $164M | Sell |
1,596,400
-33,400
| -2% | -$3.6M | 0.04% | 386 |
|
|
2023
Q2 | $188M | Sell |
1,629,800
-797,900
| -33% | -$90.6M | 0.04% | 346 |
|
|
2023
Q1 | $258M | Sell |
2,427,700
-1,857,400
| -43% | -$201M | 0.06% | 231 |
|
|
2022
Q4 | $475M | Buy |
4,285,100
+2,135,800
| +99% | +$218M | 0.11% | 113 |
|
|
2022
Q3 | $185M | Sell |
2,149,300
-104,300
| -5% | -$9.31M | 0.04% | 333 |
|
|
2022
Q2 | $205M | Buy |
2,253,600
+306,700
| +16% | +$27.2M | 0.05% | 272 |
|
|
2022
Q1 | $160M | Sell |
1,946,900
-1,564,500
| -45% | -$123M | 0.03% | 441 |
|
|
2021
Q4 | $269M | Buy |
3,511,400
+1,541,000
| +78% | +$123M | 0.06% | 249 |
|
|
2021
Q3 | $148M | Buy |
1,970,400
+459,100
| +30% | +$34.9M | 0.03% | 465 |
|
|
2021
Q2 | $118M | Sell |
1,511,300
-80,298
| -5% | -$5.97M | 0.03% | 578 |
|
|
2021
Q1 | $117M | Sell |
1,591,598
-188,744
| -11% | -$13.9M | 0.03% | 516 |
|
|
2020
Q4 | $139M | Buy |
1,780,342
+338,713
| +23% | +$25.9M | 0.04% | 396 |
|
|
2020
Q3 | $114M | Sell |
1,441,629
-96,101
| -6% | -$7.53M | 0.03% | 400 |
|
|
2020
Q2 | $113M | Sell |
1,537,730
-515,512
| -25% | -$38.8M | 0.04% | 352 |
|
|
2020
Q1 | $151M | Buy |
2,053,242
+156,152
| +8% | +$12.3M | 0.07% | 205 |
|
|
2019
Q4 | $165M | Sell |
1,897,090
-93,376
| -5% | -$7.67M | 0.07% | 224 |
|
|
2019
Q3 | $160M | Buy |
1,990,466
+438,797
| +28% | +$35.2M | 0.08% | 216 |
|
|
2019
Q2 | $124M | Sell |
1,551,669
-1,334,523
| -46% | -$102M | 0.06% | 307 |
|
|
2019
Q1 | $229M | Buy |
2,886,192
+437,540
| +18% | +$32.7M | 0.11% | 117 |
|
|
2018
Q4 | $179M | Buy |
2,448,652
+931,462
| +61% | +$65.8M | 0.1% | 142 |
|
|
2018
Q3 | $103M | Buy |
1,517,190
+163,384
| +12% | +$10.4M | 0.05% | 404 |
|
|
2018
Q2 | $78.4M | Sell |
1,353,806
-201,950
| -13% | -$11.4M | 0.04% | 467 |
|
|
2018
Q1 | $80.9M | Sell |
1,555,756
-347,726
| -18% | -$18.8M | 0.04% | 400 |
|
|
2017
Q4 | $102M | Buy |
1,903,482
+1,364,181
| +253% | +$75.6M | 0.06% | 323 |
|
|
2017
Q3 | $33M | Sell |
539,301
-289,353
| -35% | -$17.5M | 0.03% | 765 |
|
|
2017
Q2 | $50.7M | Sell |
828,654
-11,108
| -1% | -$676K | 0.04% | 486 |
|
|
2017
Q1 | $50.9M | Sell |
839,762
-286,209
| -25% | -$17.4M | 0.05% | 442 |
|
|
2016
Q4 | $63.3M | Buy |
1,125,971
+330,853
| +42% | +$19.4M | 0.06% | 297 |
|
|
2016
Q3 | $47.4M | Buy |
795,118
+355,482
| +81% | +$20.8M | 0.05% | 409 |
|
|
2016
Q2 | $24.2M | Buy |
439,636
+9,956
| +2% | +$530K | 0.03% | 653 |
|
|
2016
Q1 | $21.7M | Buy |
429,680
+125,341
| +41% | +$6.14M | 0.03% | 696 |
|
|
2015
Q4 | $15.3M | Sell |
304,339
-233,180
| -43% | -$11.8M | 0.02% | 999 |
|
|
2015
Q3 | $25.3M | Buy |
537,519
+117,481
| +28% | +$6.24M | 0.02% | 749 |
|
|
2015
Q2 | $22.8M | Sell |
420,038
-44,331
| -10% | -$2.49M | 0.02% | 915 |
|
|
2015
Q1 | $25.5M | Buy |
464,369
+128,904
| +38% | +$7.3M | 0.02% | 833 |
|
|
2014
Q4 | $18.2M | Sell |
335,465
-35,108
| -9% | -$1.96M | 0.02% | 1008 |
|
|
2014
Q3 | $21M | Buy |
370,573
+86,251
| +30% | +$4.84M | 0.02% | 878 |
|
|
2014
Q2 | $15.7M | Sell |
284,322
-225,844
| -44% | -$12.3M | 0.02% | 967 |
|
|
2014
Q1 | $27.6M | Sell |
510,166
-107,525
| -17% | -$5.57M | 0.03% | 646 |
|
|
2013
Q4 | $29.5M | Sell |
617,691
-239,783
| -28% | -$11M | 0.04% | 598 |
|
|
2013
Q3 | $39M | Buy |
857,474
+92,120
| +12% | +$4.21M | 0.06% | 398 |
|
|
2013
Q2 | $33.9M | Buy |
+765,354
| New | +$34.2M | 0.06% | 392 |
|
Other funds holding MRK
VCM
VPM
Citadel Advisors's MRK Position: Q1 2026 in Review
Citadel Advisors reduced its Merck (MRK) stake by 44% in Q1 2026, selling an estimated $346M and leaving 3,821,227 shares worth $460M. The position accounts for 0.07% of the portfolio, ranked #197.
Citadel Advisors first reported a position in MRK in Q2 2013 and has held it in 50 quarters since. The position peaked at $1.02B in Q2 2024. 3,779 funds tracked by Wall St. Rank hold MRK as of Q1 2026.
- Citadel Advisors held 3,821,227 shares of Merck worth $460M as of Q1 2026.
- Citadel Advisors sold 3,000,104 Merck shares in Q1 2026, an estimated $346M.
- Merck made up 0.07% of Citadel Advisors's portfolio in Q1 2026, its #197 holding.
- Citadel Advisors first reported a position in Merck in Q2 2013 and has held it in 50 quarters since.
- Citadel Advisors's Merck position peaked at $1.02B in Q2 2024.
- 3,779 funds tracked by Wall St. Rank held Merck as of Q1 2026.
Based on Citadel Advisors's 13F filing for Q1 2026, filed 15 May 2026.