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 | $261M | Buy |
531,300
+212,100
| +66% | +$115M | 0.03% | 325 |
|
|
2025
Q4 | $185M | Sell |
319,200
-66,300
| -17% | -$37.5M | 0.03% | 378 |
|
|
2025
Q3 | $187M | Buy |
385,500
+113,900
| +42% | +$53M | 0.03% | 369 |
|
|
2025
Q2 | $110M | Buy |
271,600
+63,800
| +31% | +$26.7M | 0.02% | 433 |
|
|
2025
Q1 | $103M | Buy |
207,800
+6,900
| +3% | +$3.74M | 0.03% | 366 |
|
|
2024
Q4 | $105M | Sell |
200,900
-117,000
| -37% | -$64.3M | 0.02% | 415 |
|
|
2024
Q3 | $197M | Buy |
317,900
+6,000
| +2% | +$3.55M | 0.04% | 233 |
|
|
2024
Q2 | $172M | Buy |
311,900
+25,300
| +9% | +$14.5M | 0.04% | 240 |
|
|
2024
Q1 | $167M | Buy |
286,600
+20,300
| +8% | +$11.4M | 0.03% | 254 |
|
|
2023
Q4 | $141M | Buy |
266,300
+4,500
| +2% | +$2.18M | 0.04% | 300 |
|
|
2023
Q3 | $133M | Sell |
261,800
-43,100
| -14% | -$23M | 0.04% | 247 |
|
|
2023
Q2 | $159M | Buy |
304,900
+212,200
| +229% | +$115M | 0.05% | 212 |
|
|
2023
Q1 | $53.4M | Sell |
92,700
-32,100
| -26% | -$18.1M | 0.02% | 495 |
|
|
2022
Q4 | $68.7M | Sell |
124,800
-60,000
| -32% | -$31.8M | 0.03% | 407 |
|
|
2022
Q3 | $93.7M | Sell |
184,800
-4,300
| -2% | -$2.41M | 0.04% | 294 |
|
|
2022
Q2 | $103M | Sell |
189,100
-72,800
| -28% | -$40.1M | 0.04% | 304 |
|
|
2022
Q1 | $155M | Buy |
261,900
+52,300
| +25% | +$30M | 0.05% | 244 |
|
|
2021
Q4 | $140M | Sell |
209,600
-52,300
| -20% | -$32.7M | 0.05% | 266 |
|
|
2021
Q3 | $150M | Buy |
261,900
+133,500
| +104% | +$73.3M | 0.05% | 245 |
|
|
2021
Q2 | $64.8M | Buy |
128,400
+74,600
| +139% | +$35.2M | 0.03% | 442 |
|
|
2021
Q1 | $24.6M | Sell |
53,800
-116,800
| -68% | -$55.7M | 0.01% | 828 |
|
|
2020
Q4 | $79.5M | Buy |
170,600
+83,400
| +96% | +$39.1M | 0.04% | 316 |
|
|
2020
Q3 | $38.5M | Buy |
87,200
+300
| +0.3% | +$124K | 0.02% | 485 |
|
|
2020
Q2 | $31.5M | Buy |
86,900
+36,800
| +73% | +$12.3M | 0.02% | 536 |
|
|
2020
Q1 | $14.2M | Buy |
50,100
+47,600
| +1,904% | +$15M | 0.01% | 589 |
|
|
2019
Q4 | $812K | Sell |
2,500
-17,200
| -87% | -$5.22M | ﹤0.01% | 3057 |
|
|
2019
Q3 | $5.74M | Buy |
19,700
+15,400
| +358% | +$4.41M | 0.01% | 897 |
|
|
2019
Q2 | $1.26M | Sell |
4,300
-2,100
| -33% | -$578K | ﹤0.01% | 2398 |
|
|
2019
Q1 | $1.75M | Sell |
6,400
-36,200
| -85% | -$9.01M | ﹤0.01% | 2174 |
|
|
2018
Q4 | $9.53M | Buy |
+42,600
| New | +$9.99M | 0.02% | 604 |
|
|
2018
Q3 | – | Sell |
-3,700
| Closed | -$766K | – | 5705 |
|
|
2018
Q2 | $766K | Buy |
3,700
+400
| +12% | +$84.9K | ﹤0.01% | 3079 |
|
|
2018
Q1 | $681K | Sell |
3,300
-700
| -18% | -$147K | ﹤0.01% | 3124 |
|
|
2017
Q4 | $760K | Sell |
4,000
-13,100
| -77% | -$2.51M | ﹤0.01% | 2681 |
|
|
2017
Q3 | $3.23M | Buy |
+17,100
| New | +$3.1M | 0.01% | 1185 |
|
|
2017
Q1 | – | Sell |
-11,500
| Closed | -$1.62M | – | 4686 |
|
|
2016
Q4 | $1.62M | Buy |
+11,500
| New | +$1.7M | 0.01% | 1516 |
|
|
2016
Q3 | – | Sell |
-2,400
| Closed | -$355K | – | 4530 |
|
|
2016
Q2 | $355K | Buy |
+2,400
| New | +$354K | ﹤0.01% | 3123 |
|
|
2016
Q1 | – | Sell |
-1,800
| Closed | -$255K | – | 4637 |
|
|
2015
Q4 | $255K | Buy |
+1,800
| New | +$240K | ﹤0.01% | 3300 |
|
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. 2,588 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.
- 2,588 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.