TMO Stock Ownership Activity

THERMO FISHER SCIENTIFIC INC 13F holders

8 value investing gurus have made changes to the THERMO FISHER SCIENTIFIC INC (TMO) position according to the gurus' latest SEC quarterly report(s). TMO has been completely sold out by 2 guru(s), the number of TMO shares has been increased by 3, decreased by 3 super investor(s).

Which gurus or hedge funds are buying TMO now?

According to the latest SEC filing(s) THERMO FISHER SCIENTIFIC INC (TMO) has been bought by 3 gurus: Ole Andreas Halvorsen - Viking Global Investors (added shares +110.29%), Parnassus Investments - Parnassus Endeavor Fund (added shares +16.81%) and Robert Olstein - Olstein Capital Management (added shares +5.47%).

To see more about who is investing in THERMO FISHER SCIENTIFIC INC (TMO), please go to the TMO ownership page.

History
Name
Company
%
Activity
Share
Change
% change to
Portfolio
% of
Portfolio
2026 Q1 (8 results)
Ole Andreas Halvorsen
Viking Global Investors
+110.29%
+874,838
+1.20%
2.29%
Parnassus Investments
Parnassus Endeavor Fund
+16.81%
+30,410
+0.32%
2.25%
Robert Olstein
Olstein Capital Management
+5.47%
+350
+0.04%
0.72%
Wallace Weitz
Weitz Value Fund
-10.29%
-8,750
-0.69%
6.03%
Michael Lindsell, Nick Train
Lindsell Train
-10.48%
-72,292
-1.13%
9.67%
William Von Mueffling
Cantillon Capital Management
-11.87%
-103,624
-0.34%
2.51%
David M. Polen
Polen Capital Management
-100.00%
-2,307
-0.01%
0.00%
Daniel Loeb
Third Point
-100.00%
-50,000
-1.39%
0.00%
Current price: $473.95 3.58% AVG reported price*: $491.53
2025 Q4 (8 results)
Ole Andreas Halvorsen
Viking Global Investors
buy
+793,187
+1.22%
1.22%
Daniel Loeb
Third Point
buy
+50,000
+0.40%
0.00%
William Von Mueffling
Cantillon Capital Management
+0.76%
+6,552
+0.02%
2.74%
Wallace Weitz
Weitz Value Fund
-3.41%
-3,000
-0.23%
6.49%
Parnassus Investments
Parnassus Endeavor Fund
-4.40%
-8,326
-0.10%
2.20%
Michael Lindsell, Nick Train
Lindsell Train
-15.66%
-128,026
-1.88%
10.13%
Robert Olstein
Olstein Capital Management
-20.00%
-1,600
-0.19%
0.76%
David M. Polen
Polen Capital Management
-97.99%
-112,206
-0.28%
0.00%
Current price: $473.95 18.21% AVG reported price*: $579.44
2025 Q3 (5 results)
William Von Mueffling
Cantillon Capital Management
-1.08%
-9,495
-0.03%
2.31%
Parnassus Investments
Parnassus Endeavor Fund
-1.60%
-3,068
-0.03%
1.95%
Michael Lindsell, Nick Train
Lindsell Train
-4.34%
-37,083
-0.44%
9.73%
David M. Polen
Polen Capital Management
-94.77%
-2,075,835
-3.27%
0.18%
Nicolai Tangen
AKO Capital
-100.00%
-26,427
-0.15%
0.00%
Current price: $473.95 2.28% AVG reported price*: $485.02
2025 Q2 (8 results)
Parnassus Investments
Parnassus Endeavor Fund
buy
+192,274
+1.72%
1.72%
Robert Olstein
Olstein Capital Management
buy
+8,000
+0.61%
0.61%
Michael Lindsell, Nick Train
Lindsell Train
+67.97%
+345,822
+3.30%
8.17%
Wallace Weitz
Weitz Value Fund
+17.33%
+13,000
+0.63%
4.27%
William Von Mueffling
Cantillon Capital Management
-2.83%
-25,508
-0.06%
2.05%
David M. Polen
Polen Capital Management
-5.69%
-132,134
-0.16%
2.73%
Nicolai Tangen
AKO Capital
-92.06%
-306,418
-1.57%
0.00%
Ravenel Boykin Curry IV
Eagle Capital Management
-100.00%
-683
-0.00%
0.00%
Current price: $473.95 16.89% AVG reported price*: $405.47
2025 Q1 (5 results)
Michael Lindsell, Nick Train
Lindsell Train
+24.94%
+101,550
+1.40%
7.01%
Nicolai Tangen
AKO Capital
+6.07%
+19,061
+0.12%
2.15%
William Von Mueffling
Cantillon Capital Management
-3.02%
-28,097
-0.09%
2.91%
David M. Polen
Polen Capital Management
-5.64%
-138,713
-0.22%
3.63%
Daniel Loeb
Third Point
-100.00%
-350,000
-2.86%
0.00%
Current price: $473.95 4.75% AVG reported price*: $497.60
2024 Q4 (5 results)
Daniel Loeb
Third Point
buy
+350,000
+2.45%
0.00%
Michael Lindsell, Nick Train
Lindsell Train
buy
+407,240
+5.30%
5.30%
William Von Mueffling
Cantillon Capital Management
+16.38%
+130,870
+0.41%
2.92%
David M. Polen
Polen Capital Management
-12.31%
-345,591
-0.49%
3.46%
Nicolai Tangen
AKO Capital
-25.90%
-109,689
-0.79%
2.26%
Current price: $473.95 8.90% AVG reported price*: $520.23
2024 Q3 (4 results)
William Von Mueffling
Cantillon Capital Management
-2.90%
-23,838
-0.09%
3.02%
David M. Polen
Polen Capital Management
-9.52%
-295,224
-0.47%
4.48%
Nicolai Tangen
AKO Capital
-19.22%
-100,775
-0.81%
3.41%
Ravenel Boykin Curry IV
Eagle Capital Management
-20.86%
-180
-0.00%
0.00%
Current price: $473.95 23.38% AVG reported price*: $618.57
2024 Q2 (6 results)
Nicolai Tangen
AKO Capital
+13.92%
+64,065
+0.49%
3.98%
David M. Polen
Polen Capital Management
-4.81%
-156,917
-0.22%
4.30%
William Von Mueffling
Cantillon Capital Management
-4.84%
-41,876
-0.15%
3.04%
Ravenel Boykin Curry IV
Eagle Capital Management
-22.04%
-244
-0.00%
0.00%
Chris Hohn
TCI Fund Management
-100.00%
-1,517,639
-2.16%
0.00%
Ole Andreas Halvorsen
Viking Global Investors
-100.00%
-128,489
-0.29%
0.00%
Current price: $473.95 14.29% AVG reported price*: $553.00
49 of 268

Shares, change to shares, sold shares - split-adjusted.

Reported price - this doesn't represent the actual buy or sell price.
It is the split-adjusted price of the security as of the last day of the reported period.

Value or Price - If the security is completely sold out, we show the reported value (or price) prior to the actual period.