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 | $668M | Buy |
5,551,800
+2,173,900
| +64% | +$251M | 0.11% | 131 |
|
|
2025
Q4 | $356M | Sell |
3,377,900
-2,539,600
| -43% | -$238M | 0.05% | 279 |
|
|
2025
Q3 | $497M | Buy |
5,917,500
+60,000
| +1% | +$4.94M | 0.08% | 188 |
|
|
2025
Q2 | $464M | Buy |
5,857,500
+440,100
| +8% | +$35M | 0.08% | 175 |
|
|
2025
Q1 | $486M | Buy |
5,417,400
+1,544,800
| +40% | +$144M | 0.09% | 133 |
|
|
2024
Q4 | $385M | Buy |
3,872,600
+1,178,300
| +44% | +$121M | 0.07% | 204 |
|
|
2024
Q3 | $306M | Buy |
2,694,300
+256,200
| +11% | +$30.4M | 0.06% | 241 |
|
|
2024
Q2 | $302M | Sell |
2,438,100
-397,900
| -14% | -$51.3M | 0.06% | 236 |
|
|
2024
Q1 | $374M | Buy |
2,836,000
+105,300
| +4% | +$13M | 0.07% | 187 |
|
|
2023
Q4 | $298M | Sell |
2,730,700
-37,100
| -1% | -$3.85M | 0.06% | 216 |
|
|
2023
Q3 | $285M | Buy |
2,767,800
+519,600
| +23% | +$56M | 0.06% | 207 |
|
|
2023
Q2 | $259M | Sell |
2,248,200
-246,800
| -10% | -$28M | 0.05% | 233 |
|
|
2023
Q1 | $265M | Sell |
2,495,000
-1,092,900
| -30% | -$118M | 0.06% | 223 |
|
|
2022
Q4 | $398M | Sell |
3,587,900
-193,000
| -5% | -$19.7M | 0.09% | 151 |
|
|
2022
Q3 | $326M | Buy |
3,780,900
+811,400
| +27% | +$72.4M | 0.07% | 174 |
|
|
2022
Q2 | $271M | Sell |
2,969,500
-656,900
| -18% | -$58.2M | 0.07% | 195 |
|
|
2022
Q1 | $298M | Sell |
3,626,400
-643,400
| -15% | -$50.7M | 0.06% | 216 |
|
|
2021
Q4 | $327M | Buy |
4,269,800
+123,800
| +3% | +$9.86M | 0.07% | 187 |
|
|
2021
Q3 | $311M | Buy |
4,146,000
+633,900
| +18% | +$48.2M | 0.06% | 206 |
|
|
2021
Q2 | $273M | Buy |
3,512,100
+1,160,178
| +49% | +$86.3M | 0.06% | 225 |
|
|
2021
Q1 | $173M | Sell |
2,351,922
-420,667
| -15% | -$31M | 0.04% | 340 |
|
|
2020
Q4 | $216M | Buy |
2,772,589
+997,591
| +56% | +$76.3M | 0.06% | 237 |
|
|
2020
Q3 | $140M | Buy |
1,774,998
+149,969
| +9% | +$11.7M | 0.04% | 304 |
|
|
2020
Q2 | $120M | Sell |
1,625,029
-318,277
| -16% | -$24M | 0.04% | 339 |
|
|
2020
Q1 | $143M | Buy |
1,943,306
+668,624
| +52% | +$52.5M | 0.06% | 220 |
|
|
2019
Q4 | $111M | Buy |
1,274,682
+494,970
| +63% | +$40.7M | 0.05% | 348 |
|
|
2019
Q3 | $62.6M | Sell |
779,712
-779,817
| -50% | -$62.5M | 0.03% | 627 |
|
|
2019
Q2 | $125M | Buy |
1,559,529
+247,747
| +19% | +$19M | 0.06% | 305 |
|
|
2019
Q1 | $104M | Sell |
1,311,782
-1,058,165
| -45% | -$79.1M | 0.05% | 347 |
|
|
2018
Q4 | $173M | Buy |
2,369,947
+765,249
| +48% | +$54M | 0.09% | 153 |
|
|
2018
Q3 | $109M | Sell |
1,604,698
-101,446
| -6% | -$6.46M | 0.05% | 383 |
|
|
2018
Q2 | $98.8M | Buy |
1,706,144
+503,459
| +42% | +$28.4M | 0.05% | 373 |
|
|
2018
Q1 | $62.5M | Buy |
1,202,685
+679,838
| +130% | +$36.7M | 0.03% | 498 |
|
|
2017
Q4 | $28.1M | Buy |
522,847
+72,941
| +16% | +$4.04M | 0.02% | 961 |
|
|
2017
Q3 | $27.5M | Sell |
449,906
-536,891
| -54% | -$32.6M | 0.02% | 883 |
|
|
2017
Q2 | $60.3M | Sell |
986,797
-137,707
| -12% | -$8.38M | 0.05% | 407 |
|
|
2017
Q1 | $68.2M | Buy |
1,124,504
+519,703
| +86% | +$31.5M | 0.06% | 315 |
|
|
2016
Q4 | $34M | Buy |
604,801
+27,877
| +5% | +$1.63M | 0.03% | 557 |
|
|
2016
Q3 | $34.4M | Sell |
576,924
-22,532
| -4% | -$1.32M | 0.03% | 572 |
|
|
2016
Q2 | $33M | Sell |
599,456
-15,091
| -2% | -$803K | 0.04% | 515 |
|
|
2016
Q1 | $31M | Buy |
614,547
+95,473
| +18% | +$4.68M | 0.04% | 501 |
|
|
2015
Q4 | $26.2M | Sell |
519,074
-231,923
| -31% | -$11.7M | 0.03% | 694 |
|
|
2015
Q3 | $35.4M | Buy |
750,997
+347,203
| +86% | +$18.4M | 0.03% | 584 |
|
|
2015
Q2 | $21.9M | Buy |
403,794
+27,667
| +7% | +$1.55M | 0.02% | 935 |
|
|
2015
Q1 | $20.6M | Buy |
376,127
+113,289
| +43% | +$6.41M | 0.02% | 963 |
|
|
2014
Q4 | $14.2M | Sell |
262,838
-43,073
| -14% | -$2.4M | 0.01% | 1154 |
|
|
2014
Q3 | $17.3M | Buy |
305,911
+90,547
| +42% | +$5.08M | 0.02% | 988 |
|
|
2014
Q2 | $11.9M | Sell |
215,364
-113,498
| -35% | -$6.19M | 0.01% | 1137 |
|
|
2014
Q1 | $17.8M | Sell |
328,862
-260,533
| -44% | -$13.5M | 0.02% | 888 |
|
|
2013
Q4 | $28.1M | Buy |
589,395
+102,494
| +21% | +$4.69M | 0.04% | 625 |
|
|
2013
Q3 | $22.1M | Sell |
486,901
-151,436
| -24% | -$6.91M | 0.03% | 674 |
|
|
2013
Q2 | $28.3M | Buy |
+638,337
| New | +$28.5M | 0.05% | 468 |
|
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.