Arrowstreet Capital’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 | $312M | Sell |
634,369
-233,143
| -27% | -$127M | 0.17% | 117 |
|
|
2025
Q4 | $503M | Sell |
867,512
-398,613
| -31% | -$225M | 0.29% | 77 |
|
|
2025
Q3 | $614M | Buy |
1,266,125
+55,171
| +5% | +$25.7M | 0.39% | 58 |
|
|
2025
Q2 | $491M | Buy |
1,210,954
+555,018
| +85% | +$232M | 0.35% | 63 |
|
|
2025
Q1 | $326M | Buy |
655,936
+286,651
| +78% | +$155M | 0.26% | 79 |
|
|
2024
Q4 | $192M | Buy |
369,285
+162,962
| +79% | +$89.6M | 0.15% | 126 |
|
|
2024
Q3 | $128M | Buy |
206,323
+176,374
| +589% | +$104M | 0.11% | 155 |
|
|
2024
Q2 | $16.6M | Buy |
29,949
+26,336
| +729% | +$15.1M | 0.01% | 519 |
|
|
2024
Q1 | $2.1M | Sell |
3,613
-3,046
| -46% | -$1.71M | ﹤0.01% | 1124 |
|
|
2023
Q4 | $3.54M | Sell |
6,659
-276,900
| -98% | -$134M | ﹤0.01% | 843 |
|
|
2023
Q3 | $144M | Sell |
283,559
-329,465
| -54% | -$176M | 0.17% | 114 |
|
|
2023
Q2 | $320M | Sell |
613,024
-68,655
| -10% | -$37M | 0.39% | 65 |
|
|
2023
Q1 | $393M | Buy |
681,679
+24,376
| +4% | +$13.7M | 0.51% | 47 |
|
|
2022
Q4 | $362M | Buy |
657,303
+134,314
| +26% | +$71.2M | 0.51% | 54 |
|
|
2022
Q3 | $265M | Buy |
522,989
+39,205
| +8% | +$21.9M | 0.39% | 71 |
|
|
2022
Q2 | $263M | Buy |
483,784
+66,212
| +16% | +$36.4M | 0.37% | 66 |
|
|
2022
Q1 | $247M | Buy |
417,572
+279,838
| +203% | +$161M | 0.31% | 86 |
|
|
2021
Q4 | $91.9M | Buy |
137,734
+130,459
| +1,793% | +$81.5M | 0.11% | 196 |
|
|
2021
Q3 | $4.16M | Sell |
7,275
-52,736
| -88% | -$28.9M | 0.01% | 976 |
|
|
2021
Q2 | $30.3M | Buy |
60,011
+25,515
| +74% | +$12M | 0.04% | 463 |
|
|
2021
Q1 | $15.7M | Sell |
34,496
-102,961
| -75% | -$49.1M | 0.02% | 687 |
|
|
2020
Q4 | $64M | Buy |
137,457
+126,582
| +1,164% | +$59.4M | 0.09% | 213 |
|
|
2020
Q3 | $4.8M | Buy |
+10,875
| New | +$4.49M | 0.01% | 1155 |
|
|
2020
Q2 | – | Sell |
-80,260
| Closed | -$22.8M | – | 2453 |
|
|
2020
Q1 | $22.8M | Sell |
80,260
-69,437
| -46% | -$21.9M | 0.06% | 272 |
|
|
2019
Q4 | $48.6M | Sell |
149,697
-59,983
| -29% | -$18.2M | 0.11% | 177 |
|
|
2019
Q3 | $61.1M | Sell |
209,680
-390,860
| -65% | -$112M | 0.14% | 150 |
|
|
2019
Q2 | $176M | Sell |
600,540
-271,298
| -31% | -$74.7M | 0.39% | 65 |
|
|
2019
Q1 | $239M | Buy |
871,838
+62,144
| +8% | +$15.5M | 0.56% | 34 |
|
|
2018
Q4 | $181M | Buy |
809,694
+806,194
| +23,034% | +$189M | 0.47% | 53 |
|
|
2018
Q3 | $854K | Sell |
3,500
-1,970
| -36% | -$453K | ﹤0.01% | 828 |
|
|
2018
Q2 | $1.13M | Buy |
+5,470
| New | +$1.16M | ﹤0.01% | 777 |
|
|
2018
Q1 | – | Sell |
-7,985
| Closed | -$1.52M | – | 1338 |
|
|
2017
Q4 | $1.52M | Buy |
+7,985
| New | +$1.53M | ﹤0.01% | 887 |
|
|
2017
Q2 | – | Sell |
-6,100
| Closed | -$937K | – | 1331 |
|
|
2017
Q1 | $937K | Buy |
+6,100
| New | +$932K | ﹤0.01% | 979 |
|
|
2016
Q3 | – | Sell |
-15,400
| Closed | -$2.28M | – | 1630 |
|
|
2016
Q2 | $2.28M | Buy |
+15,400
| New | +$2.27M | 0.01% | 802 |
|
|
2016
Q1 | – | Sell |
-1,600
| Closed | -$227K | – | 1535 |
|
|
2015
Q4 | $227K | Buy |
+1,600
| New | +$213K | ﹤0.01% | 1284 |
|
|
2015
Q1 | – | Sell |
-301,859
| Closed | -$37.8M | – | 1231 |
|
|
2014
Q4 | $37.8M | Sell |
301,859
-60,466
| -17% | -$7.35M | 0.22% | 106 |
|
|
2014
Q3 | $44.1M | Buy |
+362,325
| New | +$44.1M | 0.24% | 108 |
|
|
2014
Q2 | – | Sell |
-143,747
| Closed | -$17.3M | – | 1172 |
|
|
2014
Q1 | $17.3M | Buy |
+143,747
| New | +$17.1M | 0.1% | 197 |
|
|
2013
Q4 | – | Sell |
-23,731
| Closed | -$2.19M | – | 1290 |
|
|
2013
Q3 | $2.19M | Sell |
23,731
-56,280
| -70% | -$5.09M | 0.01% | 535 |
|
|
2013
Q2 | $6.77M | Buy |
+80,011
| New | +$6.66M | 0.05% | 277 |
|
Other funds holding TMO
VCM
Arrowstreet Capital's TMO Position: Q1 2026 in Review
Arrowstreet Capital reduced its Thermo Fisher Scientific (TMO) stake by 27% in Q1 2026, selling an estimated $127M and leaving 634,369 shares worth $312M. The position accounts for 0.17% of the portfolio, ranked #117.
Arrowstreet Capital first reported a position in TMO in Q2 2013 and has held it in 40 quarters since. The position peaked at $614M in Q3 2025. 2,587 funds tracked by Wall St. Rank hold TMO as of Q1 2026.
- Arrowstreet Capital held 634,369 shares of Thermo Fisher Scientific worth $312M as of Q1 2026.
- Arrowstreet Capital sold 233,143 Thermo Fisher Scientific shares in Q1 2026, an estimated $127M.
- Thermo Fisher Scientific made up 0.17% of Arrowstreet Capital's portfolio in Q1 2026, its #117 holding.
- Arrowstreet Capital first reported a position in Thermo Fisher Scientific in Q2 2013 and has held it in 40 quarters since.
- Arrowstreet Capital's Thermo Fisher Scientific position peaked at $614M in Q3 2025.
- 2,587 funds tracked by Wall St. Rank held Thermo Fisher Scientific as of Q1 2026.
Based on Arrowstreet Capital's 13F filing for Q1 2026, filed 14 May 2026.