William von Mueffling’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
Q2 | – | Sell |
-769,698
| Closed | -$378M | – | 37 |
|
|
2026
Q1 | $378M | Sell |
769,698
-103,624
| -12% | -$56.2M | 2.51% | 16 |
|
|
2025
Q4 | $506M | Buy |
873,322
+6,552
| +0.8% | +$3.71M | 2.74% | 13 |
|
|
2025
Q3 | $420M | Sell |
866,770
-9,495
| -1% | -$4.42M | 2.31% | 22 |
|
|
2025
Q2 | $355M | Sell |
876,265
-25,508
| -3% | -$10.7M | 2.05% | 24 |
|
|
2025
Q1 | $449M | Sell |
901,773
-28,097
| -3% | -$15.2M | 2.91% | 13 |
|
|
2024
Q4 | $484M | Buy |
929,870
+130,870
| +16% | +$72M | 2.92% | 14 |
|
|
2024
Q3 | $494M | Sell |
799,000
-23,838
| -3% | -$14.1M | 3.02% | 13 |
|
|
2024
Q2 | $455M | Sell |
822,838
-41,876
| -5% | -$24M | 3.04% | 11 |
|
|
2024
Q1 | $503M | Sell |
864,714
-17,303
| -2% | -$9.71M | 3.16% | 11 |
|
|
2023
Q4 | $468M | Sell |
882,017
-21,746
| -2% | -$10.5M | 3.13% | 12 |
|
|
2023
Q3 | $457M | Sell |
903,763
-3,451
| -0.4% | -$1.84M | 3.39% | 8 |
|
|
2023
Q2 | $473M | Buy |
907,214
+87,092
| +11% | +$47M | 3.31% | 9 |
|
|
2023
Q1 | $473M | Sell |
820,122
-14,827
| -2% | -$8.36M | 3.85% | 5 |
|
|
2022
Q4 | $460M | Sell |
834,949
-16,490
| -2% | -$8.74M | 3.89% | 7 |
|
|
2022
Q3 | $432M | Sell |
851,439
-6,767
| -0.8% | -$3.79M | 3.91% | 5 |
|
|
2022
Q2 | $466M | Sell |
858,206
-4,695
| -0.5% | -$2.58M | 3.89% | 6 |
|
|
2022
Q1 | $510M | Buy |
862,901
+24,611
| +3% | +$14.1M | 3.64% | 7 |
|
|
2021
Q4 | $559M | Sell |
838,290
-62,921
| -7% | -$39.3M | 3.69% | 5 |
|
|
2021
Q3 | $515M | Sell |
901,211
-15,459
| -2% | -$8.48M | 3.51% | 8 |
|
|
2021
Q2 | $462M | Sell |
916,670
-12,734
| -1% | -$6.01M | 3.11% | 12 |
|
|
2021
Q1 | $424M | Sell |
929,404
-34,796
| -4% | -$16.6M | 3.09% | 12 |
|
|
2020
Q4 | $449M | Sell |
964,200
-4,781
| -0.5% | -$2.24M | 3.37% | 13 |
|
|
2020
Q3 | $428M | Sell |
968,981
-11,867
| -1% | -$4.9M | 3.58% | 11 |
|
|
2020
Q2 | $355M | Buy |
980,848
+10,323
| +1% | +$3.46M | 3.09% | 14 |
|
|
2020
Q1 | $275M | Sell |
970,525
-1,256
| -0.1% | -$396K | 3.04% | 15 |
|
|
2019
Q4 | $316M | Sell |
971,781
-21,083
| -2% | -$6.39M | 2.94% | 17 |
|
|
2019
Q3 | $289M | Sell |
992,864
-8,117
| -0.8% | -$2.32M | 2.81% | 17 |
|
|
2019
Q2 | $294M | Sell |
1,000,981
-20,764
| -2% | -$5.72M | 2.97% | 18 |
|
|
2019
Q1 | $280M | Sell |
1,021,745
-3,185
| -0.3% | -$793K | 2.97% | 17 |
|
|
2018
Q4 | $229M | Buy |
1,024,930
+489,081
| +91% | +$115M | 2.77% | 17 |
|
|
2018
Q3 | $131M | Buy |
+535,849
| New | +$123M | 1.47% | 31 |
|
Other funds holding TMO
William von Mueffling's TMO Position: Q2 2026 in Review
William von Mueffling sold out of Thermo Fisher Scientific (TMO) in Q2 2026, closing a stake of 769,698 shares — an estimated $378M sold.
William von Mueffling first reported a position in TMO in Q3 2018 and held it in 31 quarters. The position peaked at $559M in Q4 2021. 2,606 funds tracked by Wall St. Rank hold TMO as of Q2 2026.
- William von Mueffling reported no remaining Thermo Fisher Scientific position as of Q2 2026 after selling out during the quarter.
- William von Mueffling sold 769,698 Thermo Fisher Scientific shares in Q2 2026, an estimated $378M.
- William von Mueffling first reported a position in Thermo Fisher Scientific in Q3 2018 and held it in 31 quarters.
- William von Mueffling's Thermo Fisher Scientific position peaked at $559M in Q4 2021.
- 2,606 funds tracked by Wall St. Rank held Thermo Fisher Scientific as of Q2 2026.
Based on Cantillon Capital Management's 13F filing for Q2 2026, filed 29 Jul 2026.