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 | $460M | Sell |
3,821,227
-3,000,104
| -44% | -$346M | 0.07% | 197 |
|
|
2025
Q4 | $718M | Buy |
6,821,331
+5,853,277
| +605% | +$549M | 0.11% | 121 |
|
|
2025
Q3 | $81.2M | Buy |
+968,054
| New | +$79.7M | 0.01% | 995 |
|
|
2025
Q2 | – | Sell |
-2,048,739
| Closed | -$163M | – | 14120 |
|
|
2025
Q1 | $184M | Sell |
2,048,739
-3,232,971
| -61% | -$302M | 0.03% | 398 |
|
|
2024
Q4 | $525M | Sell |
5,281,710
-1,759,979
| -25% | -$181M | 0.09% | 135 |
|
|
2024
Q3 | $800M | Sell |
7,041,689
-1,200,378
| -15% | -$143M | 0.15% | 74 |
|
|
2024
Q2 | $1.02B | Buy |
8,242,067
+666,847
| +9% | +$85.9M | 0.21% | 59 |
|
|
2024
Q1 | $1,000M | Buy |
7,575,220
+1,257,049
| +20% | +$155M | 0.19% | 61 |
|
|
2023
Q4 | $689M | Sell |
6,318,171
-358,936
| -5% | -$37.3M | 0.14% | 71 |
|
|
2023
Q3 | $687M | Buy |
6,677,107
+4,837,236
| +263% | +$521M | 0.15% | 66 |
|
|
2023
Q2 | $212M | Buy |
1,839,871
+1,068,727
| +139% | +$121M | 0.04% | 303 |
|
|
2023
Q1 | $82M | Sell |
771,144
-1,715,524
| -69% | -$185M | 0.02% | 730 |
|
|
2022
Q4 | $276M | Sell |
2,486,668
-900,548
| -27% | -$92.1M | 0.06% | 226 |
|
|
2022
Q3 | $292M | Buy |
3,387,216
+1,231,726
| +57% | +$110M | 0.07% | 192 |
|
|
2022
Q2 | $197M | Sell |
2,155,490
-1,233,115
| -36% | -$109M | 0.05% | 285 |
|
|
2022
Q1 | $278M | Buy |
3,388,605
+1,171,399
| +53% | +$92.4M | 0.06% | 232 |
|
|
2021
Q4 | $170M | Sell |
2,217,206
-871,326
| -28% | -$69.4M | 0.03% | 412 |
|
|
2021
Q3 | $232M | Buy |
3,088,532
+138,422
| +5% | +$10.5M | 0.05% | 296 |
|
|
2021
Q2 | $229M | Sell |
2,950,110
-1,641,974
| -36% | -$122M | 0.05% | 276 |
|
|
2021
Q1 | $338M | Sell |
4,592,084
-586,644
| -11% | -$43.3M | 0.08% | 152 |
|
|
2020
Q4 | $404M | Buy |
5,178,728
+2,969,387
| +134% | +$227M | 0.11% | 113 |
|
|
2020
Q3 | $175M | Buy |
2,209,341
+813,904
| +58% | +$63.8M | 0.05% | 238 |
|
|
2020
Q2 | $103M | Sell |
1,395,437
-107,143
| -7% | -$8.07M | 0.04% | 391 |
|
|
2020
Q1 | $110M | Buy |
1,502,580
+520,585
| +53% | +$40.9M | 0.05% | 305 |
|
|
2019
Q4 | $85.2M | Sell |
981,995
-1,789,114
| -65% | -$147M | 0.04% | 471 |
|
|
2019
Q3 | $223M | Buy |
2,771,109
+2,044,502
| +281% | +$164M | 0.11% | 131 |
|
|
2019
Q2 | $58.1M | Sell |
726,607
-604,870
| -45% | -$46.3M | 0.03% | 652 |
|
|
2019
Q1 | $106M | Sell |
1,331,477
-590,451
| -31% | -$44.2M | 0.05% | 344 |
|
|
2018
Q4 | $140M | Sell |
1,921,928
-3,490,915
| -64% | -$246M | 0.08% | 219 |
|
|
2018
Q3 | $366M | Buy |
5,412,843
+2,018,566
| +59% | +$129M | 0.16% | 70 |
|
|
2018
Q2 | $197M | Sell |
3,394,277
-2,960,808
| -47% | -$167M | 0.1% | 156 |
|
|
2018
Q1 | $330M | Sell |
6,355,085
-2,477,904
| -28% | -$134M | 0.18% | 60 |
|
|
2017
Q4 | $474M | Buy |
8,832,989
+8,166,391
| +1,225% | +$453M | 0.29% | 36 |
|
|
2017
Q3 | $40.7M | Sell |
666,598
-1,963,728
| -75% | -$119M | 0.03% | 651 |
|
|
2017
Q2 | $161M | Buy |
2,630,326
+2,204,981
| +518% | +$134M | 0.14% | 114 |
|
|
2017
Q1 | $25.8M | Buy |
425,345
+237,969
| +127% | +$14.4M | 0.02% | 800 |
|
|
2016
Q4 | $10.5M | Sell |
187,376
-3,182,689
| -94% | -$186M | 0.01% | 1314 |
|
|
2016
Q3 | $201M | Buy |
+3,370,065
| New | +$197M | 0.2% | 57 |
|
|
2016
Q2 | – | Sell |
-230,543
| Closed | -$12.3M | – | 7181 |
|
|
2016
Q1 | $11.6M | Sell |
230,543
-274,658
| -54% | -$13.5M | 0.01% | 1080 |
|
|
2015
Q4 | $25.5M | Buy |
505,201
+432,545
| +595% | +$21.8M | 0.03% | 711 |
|
|
2015
Q3 | $3.42M | Sell |
72,656
-1,230,033
| -94% | -$65.3M | ﹤0.01% | 2317 |
|
|
2015
Q2 | $70.8M | Buy |
1,302,689
+351,561
| +37% | +$19.7M | 0.06% | 351 |
|
|
2015
Q1 | $52.2M | Sell |
951,128
-209,135
| -18% | -$11.8M | 0.05% | 463 |
|
|
2014
Q4 | $62.9M | Sell |
1,160,263
-1,035,414
| -47% | -$57.7M | 0.06% | 355 |
|
|
2014
Q3 | $124M | Buy |
2,195,677
+1,820,768
| +486% | +$102M | 0.13% | 133 |
|
|
2014
Q2 | $20.7M | Sell |
374,909
-1,562,344
| -81% | -$85.2M | 0.02% | 790 |
|
|
2014
Q1 | $105M | Buy |
1,937,253
+1,845,549
| +2,013% | +$95.6M | 0.12% | 160 |
|
|
2013
Q4 | $4.38M | Sell |
91,704
-2,070,529
| -96% | -$94.6M | 0.01% | 1792 |
|
|
2013
Q3 | $98.2M | Buy |
2,162,233
+2,151,501
| +20,048% | +$98.2M | 0.15% | 119 |
|
|
2013
Q2 | $476K | Buy |
+10,732
| New | +$479K | ﹤0.01% | 3884 |
|
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.