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 | $125M | Sell |
254,800
-61,500
| -19% | -$33.4M | 0.02% | 551 |
|
|
2025
Q4 | $183M | Sell |
316,300
-183,600
| -37% | -$104M | 0.03% | 381 |
|
|
2025
Q3 | $242M | Sell |
499,900
-130,300
| -21% | -$60.6M | 0.04% | 305 |
|
|
2025
Q2 | $256M | Buy |
630,200
+457,100
| +264% | +$191M | 0.05% | 235 |
|
|
2025
Q1 | $86.1M | Buy |
173,100
+26,600
| +18% | +$14.4M | 0.02% | 432 |
|
|
2024
Q4 | $76.2M | Sell |
146,500
-55,500
| -27% | -$30.5M | 0.02% | 527 |
|
|
2024
Q3 | $125M | Buy |
202,000
+95,900
| +90% | +$56.8M | 0.03% | 329 |
|
|
2024
Q2 | $58.7M | Sell |
106,100
-33,300
| -24% | -$19.1M | 0.01% | 619 |
|
|
2024
Q1 | $81M | Sell |
139,400
-81,700
| -37% | -$45.8M | 0.02% | 433 |
|
|
2023
Q4 | $117M | Buy |
221,100
+54,800
| +33% | +$26.5M | 0.03% | 348 |
|
|
2023
Q3 | $84.2M | Buy |
166,300
+27,800
| +20% | +$14.8M | 0.03% | 379 |
|
|
2023
Q2 | $72.3M | Sell |
138,500
-78,900
| -36% | -$42.6M | 0.02% | 453 |
|
|
2023
Q1 | $125M | Sell |
217,400
-79,200
| -27% | -$44.6M | 0.05% | 241 |
|
|
2022
Q4 | $163M | Sell |
296,600
-41,400
| -12% | -$21.9M | 0.08% | 179 |
|
|
2022
Q3 | $171M | Buy |
338,000
+82,400
| +32% | +$46.1M | 0.08% | 158 |
|
|
2022
Q2 | $139M | Buy |
255,600
+154,700
| +153% | +$85.2M | 0.06% | 220 |
|
|
2022
Q1 | $59.6M | Sell |
100,900
-43,200
| -30% | -$24.8M | 0.02% | 600 |
|
|
2021
Q4 | $96.1M | Sell |
144,100
-107,500
| -43% | -$67.1M | 0.03% | 384 |
|
|
2021
Q3 | $144M | Buy |
251,600
+96,300
| +62% | +$52.9M | 0.05% | 255 |
|
|
2021
Q2 | $78.3M | Sell |
155,300
-135,500
| -47% | -$63.9M | 0.03% | 380 |
|
|
2021
Q1 | $133M | Buy |
290,800
+115,200
| +66% | +$55M | 0.07% | 204 |
|
|
2020
Q4 | $81.8M | Buy |
175,600
+12,500
| +8% | +$5.86M | 0.04% | 305 |
|
|
2020
Q3 | $72M | Buy |
163,100
+63,100
| +63% | +$26.1M | 0.04% | 298 |
|
|
2020
Q2 | $36.2M | Buy |
100,000
+24,200
| +32% | +$8.11M | 0.03% | 474 |
|
|
2020
Q1 | $21.5M | Buy |
75,800
+61,800
| +441% | +$19.5M | 0.02% | 430 |
|
|
2019
Q4 | $4.55M | Sell |
14,000
-18,800
| -57% | -$5.7M | 0.01% | 1171 |
|
|
2019
Q3 | $9.55M | Sell |
32,800
-11,900
| -27% | -$3.41M | 0.02% | 624 |
|
|
2019
Q2 | $13.1M | Buy |
44,700
+41,200
| +1,177% | +$11.3M | 0.02% | 511 |
|
|
2019
Q1 | $958K | Sell |
3,500
-105,300
| -97% | -$26.2M | ﹤0.01% | 2858 |
|
|
2018
Q4 | $24.3M | Buy |
108,800
+105,800
| +3,527% | +$24.8M | 0.05% | 259 |
|
|
2018
Q3 | $732K | Sell |
3,000
-1,800
| -38% | -$414K | ﹤0.01% | 3144 |
|
|
2018
Q2 | $994K | Buy |
4,800
+2,700
| +129% | +$573K | ﹤0.01% | 2747 |
|
|
2018
Q1 | $434K | Buy |
+2,100
| New | +$441K | ﹤0.01% | 3621 |
|
|
2017
Q4 | – | Sell |
-21,500
| Closed | -$4.07M | – | 5182 |
|
|
2017
Q3 | $4.07M | Buy |
21,500
+15,600
| +264% | +$2.83M | 0.01% | 1022 |
|
|
2017
Q2 | $1.03M | Buy |
+5,900
| New | +$991K | ﹤0.01% | 2171 |
|
|
2017
Q1 | – | Sell |
-19,800
| Closed | -$2.79M | – | 4685 |
|
|
2016
Q4 | $2.79M | Buy |
19,800
+13,700
| +225% | +$2.02M | 0.01% | 1032 |
|
|
2016
Q3 | $970K | Sell |
6,100
-9,200
| -60% | -$1.42M | ﹤0.01% | 2014 |
|
|
2016
Q2 | $2.26M | Buy |
15,300
+7,300
| +91% | +$1.08M | 0.01% | 1165 |
|
|
2016
Q1 | $1.13M | Buy |
8,000
+1,400
| +21% | +$188K | 0.01% | 1740 |
|
|
2015
Q4 | $936K | Buy |
+6,600
| New | +$880K | 0.01% | 1804 |
|
|
2015
Q3 | – | Sell |
-4,300
| Closed | -$558K | – | 4144 |
|
|
2015
Q2 | $558K | Buy |
4,300
+1,200
| +39% | +$156K | ﹤0.01% | 2174 |
|
|
2015
Q1 | $416K | Buy |
+3,100
| New | +$400K | ﹤0.01% | 2223 |
|
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.