Marshall Wace’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 | $235M | Sell |
477,250
-476,578
| -50% | -$259M | 0.23% | 60 |
|
|
2025
Q4 | $553M | Buy |
953,828
+448,365
| +89% | +$254M | 0.5% | 24 |
|
|
2025
Q3 | $245M | Buy |
505,463
+133,833
| +36% | +$62.3M | 0.25% | 59 |
|
|
2025
Q2 | $151M | Buy |
+371,630
| New | +$155M | 0.17% | 102 |
|
|
2025
Q1 | – | Sell |
-330,321
| Closed | -$172M | – | 3092 |
|
|
2024
Q4 | $172M | Sell |
330,321
-297,412
| -47% | -$164M | 0.21% | 74 |
|
|
2024
Q3 | $388M | Buy |
627,733
+627,033
| +89,576% | +$371M | 0.47% | 25 |
|
|
2024
Q2 | $387K | Sell |
700
-1,781
| -72% | -$1.02M | ﹤0.01% | 2061 |
|
|
2024
Q1 | $1.44M | Sell |
2,481
-420,095
| -99% | -$236M | ﹤0.01% | 1509 |
|
|
2023
Q4 | $224M | Buy |
+422,576
| New | +$205M | 0.38% | 38 |
|
|
2023
Q2 | – | Sell |
-30,479
| Closed | -$17.6M | – | 2964 |
|
|
2023
Q1 | $17.6M | Sell |
30,479
-370,095
| -92% | -$209M | 0.04% | 512 |
|
|
2022
Q4 | $221M | Sell |
400,574
-62,242
| -13% | -$33M | 0.5% | 26 |
|
|
2022
Q3 | $235M | Sell |
462,816
-255,698
| -36% | -$143M | 0.51% | 21 |
|
|
2022
Q2 | $390M | Buy |
718,514
+398,226
| +124% | +$219M | 0.8% | 8 |
|
|
2022
Q1 | $189M | Sell |
320,288
-723,556
| -69% | -$416M | 0.36% | 45 |
|
|
2021
Q4 | $696M | Buy |
1,043,844
+640,091
| +159% | +$400M | 1.29% | 6 |
|
|
2021
Q3 | $231M | Sell |
403,753
-96,414
| -19% | -$52.9M | 0.96% | 7 |
|
|
2021
Q2 | $252M | Buy |
500,167
+60,052
| +14% | +$28.3M | 1.14% | 6 |
|
|
2021
Q1 | $201M | Sell |
440,115
-427,279
| -49% | -$204M | 0.92% | 10 |
|
|
2020
Q4 | $404M | Buy |
867,394
+347,974
| +67% | +$163M | 2.19% | 2 |
|
|
2020
Q3 | $229M | Sell |
519,420
-57,258
| -10% | -$23.7M | 1.47% | 9 |
|
|
2020
Q2 | $209M | Sell |
576,678
-27,029
| -4% | -$9.06M | 1.46% | 6 |
|
|
2020
Q1 | $171M | Sell |
603,707
-313,495
| -34% | -$98.9M | 1.71% | 5 |
|
|
2019
Q4 | $298M | Sell |
917,202
-234,030
| -20% | -$71M | 2.05% | 3 |
|
|
2019
Q3 | $335M | Buy |
1,151,232
+70,151
| +6% | +$20.1M | 2.64% | 2 |
|
|
2019
Q2 | $317M | Buy |
1,081,081
+305,978
| +39% | +$84.3M | 2.61% | 2 |
|
|
2019
Q1 | $212M | Buy |
775,103
+607,245
| +362% | +$151M | 1.99% | 3 |
|
|
2018
Q4 | $37.6M | Buy |
+167,858
| New | +$39.4M | 0.38% | 48 |
|
|
2017
Q4 | – | Sell |
-44,224
| Closed | -$8.36M | – | 482 |
|
|
2017
Q3 | $8.36M | Buy |
+44,224
| New | +$8.01M | 0.39% | 57 |
|
|
2017
Q1 | – | Sell |
-302,394
| Closed | -$42.7M | – | 726 |
|
|
2016
Q4 | $42.7M | Buy |
+302,394
| New | +$44.6M | 0.28% | 97 |
|
|
2016
Q1 | – | Sell |
-1,692
| Closed | -$240K | – | 1191 |
|
|
2015
Q4 | $240K | Buy |
+1,692
| New | +$226K | ﹤0.01% | 899 |
|
|
2015
Q2 | – | Sell |
-6,390
| Closed | -$858K | – | 1046 |
|
|
2015
Q1 | $858K | Buy |
6,390
+3,607
| +130% | +$465K | 0.01% | 601 |
|
|
2014
Q4 | $349K | Buy |
+2,783
| New | +$338K | ﹤0.01% | 689 |
|
|
2014
Q3 | – | Sell |
-1,933
| Closed | -$228K | – | 1042 |
|
|
2014
Q2 | $228K | Sell |
1,933
-212
| -10% | -$24.9K | ﹤0.01% | 824 |
|
|
2014
Q1 | $258K | Buy |
+2,145
| New | +$255K | ﹤0.01% | 717 |
|
Other funds holding TMO
VCM
Marshall Wace's TMO Position: Q1 2026 in Review
Marshall Wace reduced its Thermo Fisher Scientific (TMO) stake by 50% in Q1 2026, selling an estimated $259M and leaving 477,250 shares worth $235M. The position accounts for 0.23% of the portfolio, ranked #60.
Marshall Wace first reported a position in TMO in Q1 2014 and has held it in 34 quarters since. The position peaked at $696M in Q4 2021. 2,587 funds tracked by Wall St. Rank hold TMO as of Q1 2026.
- Marshall Wace held 477,250 shares of Thermo Fisher Scientific worth $235M as of Q1 2026.
- Marshall Wace sold 476,578 Thermo Fisher Scientific shares in Q1 2026, an estimated $259M.
- Thermo Fisher Scientific made up 0.23% of Marshall Wace's portfolio in Q1 2026, its #60 holding.
- Marshall Wace first reported a position in Thermo Fisher Scientific in Q1 2014 and has held it in 34 quarters since.
- Marshall Wace's Thermo Fisher Scientific position peaked at $696M in Q4 2021.
- 2,587 funds tracked by Wall St. Rank held Thermo Fisher Scientific as of Q1 2026.
Based on Marshall Wace's 13F filing for Q1 2026, filed 15 May 2026.