Jane Street’s Thermo Fisher Scientific TMO Stock Holding History
Bought
Maintained
Sold
| Quarter | Market Value | Status | Shares |
Change in Stake | Trade Value | Portfolio Weight | Portfolio Position | |
|---|---|---|---|---|---|---|---|---|
|
2026
Q1 | $8.44M | Sell |
17,167
-649,544
| -97% | -$353M | ﹤0.01% | 2754 |
|
|
2025
Q4 | $386M | Buy |
666,711
+506,958
| +317% | +$287M | 0.06% | 221 |
|
|
2025
Q3 | $77.5M | Sell |
159,753
-182,722
| -53% | -$85.1M | 0.01% | 710 |
|
|
2025
Q2 | $139M | Buy |
342,475
+281,390
| +461% | +$118M | 0.03% | 366 |
|
|
2025
Q1 | $30.4M | Sell |
61,085
-365,215
| -86% | -$198M | 0.01% | 982 |
|
|
2024
Q4 | $222M | Buy |
426,300
+420,025
| +6,694% | +$231M | 0.05% | 222 |
|
|
2024
Q3 | $3.88M | Sell |
6,275
-304,351
| -98% | -$180M | ﹤0.01% | 3272 |
|
|
2024
Q2 | $172M | Buy |
310,626
+219,193
| +240% | +$126M | 0.04% | 243 |
|
|
2024
Q1 | $53.1M | Buy |
91,433
+9,684
| +12% | +$5.43M | 0.01% | 600 |
|
|
2023
Q4 | $43.4M | Sell |
81,749
-76,812
| -48% | -$37.2M | 0.01% | 758 |
|
|
2023
Q3 | $80.3M | Buy |
158,561
+33,336
| +27% | +$17.8M | 0.03% | 394 |
|
|
2023
Q2 | $65.3M | Buy |
125,225
+80,567
| +180% | +$43.5M | 0.02% | 485 |
|
|
2023
Q1 | $25.7M | Sell |
44,658
-6,318
| -12% | -$3.56M | 0.01% | 841 |
|
|
2022
Q4 | $28.1M | Sell |
50,976
-62,675
| -55% | -$33.2M | 0.01% | 796 |
|
|
2022
Q3 | $57.6M | Buy |
113,651
+42,691
| +60% | +$23.9M | 0.03% | 462 |
|
|
2022
Q2 | $38.6M | Buy |
70,960
+8,426
| +13% | +$4.64M | 0.02% | 678 |
|
|
2022
Q1 | $36.9M | Buy |
62,534
+25,382
| +68% | +$14.6M | 0.01% | 848 |
|
|
2021
Q4 | $24.8M | Sell |
37,152
-8,412
| -18% | -$5.25M | 0.01% | 1031 |
|
|
2021
Q3 | $26M | Sell |
45,564
-80,619
| -64% | -$44.2M | 0.01% | 953 |
|
|
2021
Q2 | $63.7M | Sell |
126,183
-13,337
| -10% | -$6.29M | 0.02% | 452 |
|
|
2021
Q1 | $63.7M | Buy |
139,520
+94,972
| +213% | +$45.3M | 0.03% | 411 |
|
|
2020
Q4 | $20.8M | Buy |
44,548
+35,838
| +411% | +$16.8M | 0.01% | 846 |
|
|
2020
Q3 | $3.85M | Sell |
8,710
-64,470
| -88% | -$26.6M | ﹤0.01% | 2148 |
|
|
2020
Q2 | $26.5M | Buy |
73,180
+40,051
| +121% | +$13.4M | 0.02% | 616 |
|
|
2020
Q1 | $9.39M | Buy |
+33,129
| New | +$10.4M | 0.01% | 808 |
|
|
2019
Q4 | – | Sell |
-13,543
| Closed | -$4.11M | – | 5753 |
|
|
2019
Q3 | $3.94M | Buy |
13,543
+9,871
| +269% | +$2.83M | 0.01% | 1168 |
|
|
2019
Q2 | $1.08M | Sell |
3,672
-31,519
| -90% | -$8.68M | ﹤0.01% | 2604 |
|
|
2019
Q1 | $9.63M | Buy |
35,191
+14,452
| +70% | +$3.6M | 0.02% | 712 |
|
|
2018
Q4 | $4.64M | Buy |
20,739
+19,365
| +1,409% | +$4.54M | 0.01% | 998 |
|
|
2018
Q3 | $335K | Sell |
1,374
-17,450
| -93% | -$4.01M | ﹤0.01% | 4076 |
|
|
2018
Q2 | $3.9M | Buy |
18,824
+12,713
| +208% | +$2.7M | 0.01% | 1267 |
|
|
2018
Q1 | $1.26M | Buy |
6,111
+854
| +16% | +$179K | ﹤0.01% | 2363 |
|
|
2017
Q4 | $998K | Sell |
5,257
-22,239
| -81% | -$4.26M | ﹤0.01% | 2348 |
|
|
2017
Q3 | $5.2M | Buy |
27,496
+22,980
| +509% | +$4.16M | 0.02% | 846 |
|
|
2017
Q2 | $788K | Sell |
4,516
-5,469
| -55% | -$919K | ﹤0.01% | 2480 |
|
|
2017
Q1 | $1.53M | Buy |
9,985
+3,528
| +55% | +$539K | 0.01% | 1616 |
|
|
2016
Q4 | $911K | Sell |
6,457
-6,418
| -50% | -$946K | ﹤0.01% | 2189 |
|
|
2016
Q3 | $2.05M | Buy |
+12,875
| New | +$1.98M | 0.01% | 1184 |
|
|
2016
Q1 | – | Sell |
-21,633
| Closed | -$2.9M | – | 4636 |
|
|
2015
Q4 | $3.07M | Buy |
21,633
+13,854
| +178% | +$1.85M | 0.02% | 758 |
|
|
2015
Q3 | $951K | Buy |
7,779
+5,758
| +285% | +$750K | 0.01% | 1677 |
|
|
2015
Q2 | $262K | Buy |
+2,021
| New | +$263K | ﹤0.01% | 2967 |
|
|
2014
Q4 | – | Sell |
-12,774
| Closed | -$1.55M | – | 3031 |
|
|
2014
Q3 | $1.55M | Buy |
+12,774
| New | +$1.55M | 0.02% | 701 |
|
|
2014
Q2 | – | Sell |
-11,753
| Closed | -$1.41M | – | 3116 |
|
|
2014
Q1 | $1.41M | Buy |
+11,753
| New | +$1.4M | 0.02% | 733 |
|
|
2013
Q4 | – | Sell |
-26,861
| Closed | -$2.48M | – | 2889 |
|
|
2013
Q3 | $2.48M | Buy |
26,861
+11,461
| +74% | +$1.04M | 0.03% | 474 |
|
|
2013
Q2 | $1.3M | Buy |
+15,400
| New | +$1.28M | 0.02% | 698 |
|
Other funds holding TMO
VCM
Jane Street's TMO Position: Q1 2026 in Review
Jane Street reduced its Thermo Fisher Scientific (TMO) stake by 97% in Q1 2026, selling an estimated $353M and leaving 17,167 shares worth $8.44M. The position accounts for ﹤0.01% of the portfolio, ranked #2754.
Jane Street first reported a position in TMO in Q2 2013 and has held it in 45 quarters since. The position peaked at $386M in Q4 2025. 2,598 funds tracked by Wall St. Rank hold TMO as of Q1 2026.
- Jane Street held 17,167 shares of Thermo Fisher Scientific worth $8.44M as of Q1 2026.
- Jane Street sold 649,544 Thermo Fisher Scientific shares in Q1 2026, an estimated $353M.
- Thermo Fisher Scientific made up ﹤0.01% of Jane Street's portfolio in Q1 2026, its #2754 holding.
- Jane Street first reported a position in Thermo Fisher Scientific in Q2 2013 and has held it in 45 quarters since.
- Jane Street's Thermo Fisher Scientific position peaked at $386M in Q4 2025.
- 2,598 funds tracked by Wall St. Rank held Thermo Fisher Scientific as of Q1 2026.
Based on Jane Street's 13F filing for Q1 2026, filed 12 May 2026.