Jane Street’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 | $42.2M | Buy |
351,131
+223,444
| +175% | +$25.8M | 0.01% | 1172 |
|
|
2025
Q4 | $13.4M | Sell |
127,687
-523,397
| -80% | -$49.1M | ﹤0.01% | 1979 |
|
|
2025
Q3 | $54.6M | Buy |
651,084
+642,719
| +7,683% | +$52.9M | 0.01% | 909 |
|
|
2025
Q2 | $662K | Sell |
8,365
-371,327
| -98% | -$29.5M | ﹤0.01% | 6413 |
|
|
2025
Q1 | $34.1M | Sell |
379,692
-22,040
| -5% | -$2.06M | 0.01% | 913 |
|
|
2024
Q4 | $40M | Buy |
401,732
+239,324
| +147% | +$24.7M | 0.01% | 816 |
|
|
2024
Q3 | $18.4M | Sell |
162,408
-2,272,016
| -93% | -$270M | ﹤0.01% | 1305 |
|
|
2024
Q2 | $301M | Buy |
2,434,424
+841,959
| +53% | +$108M | 0.07% | 147 |
|
|
2024
Q1 | $210M | Buy |
1,592,465
+1,028,701
| +182% | +$127M | 0.04% | 206 |
|
|
2023
Q4 | $61.5M | Buy |
563,764
+190,342
| +51% | +$19.8M | 0.02% | 587 |
|
|
2023
Q3 | $38.4M | Buy |
373,422
+18,245
| +5% | +$1.97M | 0.01% | 687 |
|
|
2023
Q2 | $41M | Sell |
355,177
-381,746
| -52% | -$43.3M | 0.01% | 709 |
|
|
2023
Q1 | $78.4M | Buy |
736,923
+495,063
| +205% | +$53.4M | 0.03% | 364 |
|
|
2022
Q4 | $26.8M | Buy |
241,860
+131,023
| +118% | +$13.4M | 0.01% | 820 |
|
|
2022
Q3 | $9.55M | Sell |
110,837
-33,264
| -23% | -$2.97M | ﹤0.01% | 1745 |
|
|
2022
Q2 | $13.1M | Sell |
144,101
-344,036
| -70% | -$30.5M | 0.01% | 1456 |
|
|
2022
Q1 | $40.1M | Sell |
488,137
-99,931
| -17% | -$7.88M | 0.01% | 788 |
|
|
2021
Q4 | $45.1M | Sell |
588,068
-1,074,445
| -65% | -$85.6M | 0.01% | 697 |
|
|
2021
Q3 | $125M | Buy |
1,662,513
+557,899
| +51% | +$42.4M | 0.04% | 286 |
|
|
2021
Q2 | $85.9M | Buy |
1,104,614
+82,480
| +8% | +$6.13M | 0.03% | 353 |
|
|
2021
Q1 | $75.2M | Buy |
1,022,134
+578,187
| +130% | +$42.6M | 0.04% | 357 |
|
|
2020
Q4 | $34.7M | Buy |
443,947
+210,824
| +90% | +$16.1M | 0.02% | 575 |
|
|
2020
Q3 | $18.5M | Buy |
233,123
+67,854
| +41% | +$5.31M | 0.01% | 825 |
|
|
2020
Q2 | $12.2M | Buy |
165,269
+110,090
| +200% | +$8.29M | 0.01% | 1051 |
|
|
2020
Q1 | $4.05M | Sell |
55,179
-25,057
| -31% | -$1.97M | ﹤0.01% | 1349 |
|
|
2019
Q4 | $6.96M | Sell |
80,236
-63,671
| -44% | -$5.23M | 0.01% | 841 |
|
|
2019
Q3 | $11.6M | Buy |
143,907
+75,070
| +109% | +$6.02M | 0.02% | 534 |
|
|
2019
Q2 | $5.51M | Sell |
68,837
-426,454
| -86% | -$32.7M | 0.01% | 979 |
|
|
2019
Q1 | $39.3M | Buy |
495,291
+419,924
| +557% | +$31.4M | 0.06% | 235 |
|
|
2018
Q4 | $5.5M | Sell |
75,367
-40,478
| -35% | -$2.86M | 0.01% | 889 |
|
|
2018
Q3 | $7.84M | Sell |
115,845
-12,078
| -9% | -$769K | 0.02% | 754 |
|
|
2018
Q2 | $7.41M | Sell |
127,923
-24,530
| -16% | -$1.38M | 0.02% | 779 |
|
|
2018
Q1 | $7.92M | Sell |
152,453
-54,580
| -26% | -$2.95M | 0.02% | 655 |
|
|
2017
Q4 | $11.1M | Sell |
207,033
-283,447
| -58% | -$15.7M | 0.03% | 472 |
|
|
2017
Q3 | $30M | Buy |
490,480
+438,865
| +850% | +$26.6M | 0.1% | 190 |
|
|
2017
Q2 | $3.16M | Buy |
51,615
+43,328
| +523% | +$2.64M | 0.01% | 1090 |
|
|
2017
Q1 | $502K | Sell |
8,287
-79,640
| -91% | -$4.83M | ﹤0.01% | 2870 |
|
|
2016
Q4 | $4.94M | Sell |
87,927
-105,730
| -55% | -$6.19M | 0.02% | 672 |
|
|
2016
Q3 | $11.5M | Buy |
193,657
+174,034
| +887% | +$10.2M | 0.06% | 277 |
|
|
2016
Q2 | $1.08M | Sell |
19,623
-13,001
| -40% | -$692K | 0.01% | 1898 |
|
|
2016
Q1 | $1.65M | Sell |
32,624
-11,658
| -26% | -$571K | 0.01% | 1365 |
|
|
2015
Q4 | $2.23M | Buy |
44,282
+20,483
| +86% | +$1.03M | 0.01% | 970 |
|
|
2015
Q3 | $1.12M | Buy |
23,799
+1,876
| +9% | +$99.7K | 0.01% | 1532 |
|
|
2015
Q2 | $1.19M | Buy |
21,923
+293
| +1% | +$16.4K | 0.01% | 1396 |
|
|
2015
Q1 | $1.19M | Buy |
21,630
+16,023
| +286% | +$907K | 0.01% | 1249 |
|
|
2014
Q4 | $304K | Sell |
5,607
-3,812
| -40% | -$212K | ﹤0.01% | 1876 |
|
|
2014
Q3 | $533K | Sell |
9,419
-90,455
| -91% | -$5.08M | 0.01% | 1382 |
|
|
2014
Q2 | $5.51M | Buy |
99,874
+92,633
| +1,279% | +$5.05M | 0.07% | 238 |
|
|
2014
Q1 | $392K | Sell |
7,241
-335,071
| -98% | -$17.4M | ﹤0.01% | 1772 |
|
|
2013
Q4 | $16.3M | Buy |
342,312
+303,086
| +773% | +$13.9M | 0.23% | 74 |
|
|
2013
Q3 | $1.78M | Buy |
39,226
+26,059
| +198% | +$1.19M | 0.02% | 664 |
|
|
2013
Q2 | $584K | Buy |
+13,167
| New | +$588K | 0.01% | 1306 |
|
Other funds holding MRK
VCM
VPM
Jane Street's MRK Position: Q1 2026 in Review
Jane Street increased its Merck (MRK) stake by 175% in Q1 2026, buying an estimated $25.8M and bringing the position to 351,131 shares worth $42.2M. The position accounts for 0.01% of the portfolio, ranked #1172.
Jane Street first reported a position in MRK in Q2 2013 and has held it in 52 quarters since. The position peaked at $301M in Q2 2024. 3,778 funds tracked by Wall St. Rank hold MRK as of Q1 2026.
- Jane Street held 351,131 shares of Merck worth $42.2M as of Q1 2026.
- Jane Street bought 223,444 Merck shares in Q1 2026, an estimated $25.8M.
- Merck made up 0.01% of Jane Street's portfolio in Q1 2026, its #1172 holding.
- Jane Street first reported a position in Merck in Q2 2013 and has held it in 52 quarters since.
- Jane Street's Merck position peaked at $301M in Q2 2024.
- 3,778 funds tracked by Wall St. Rank held Merck as of Q1 2026.
Based on Jane Street's 13F filing for Q1 2026, filed 12 May 2026.