Primecap Management’s Thermo Fisher Scientific TMO Stock Holding History

Primecap Management’s Portfolio TMO Stock Details TMO Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	$974M	Sell	1,982,531 -74,761	-4%	-$40.6M	0.77%	38
2025 Q4	$1.19B	Sell	2,057,292 -246,030	-11%	-$139M	0.9%	33
2025 Q3	$1.12B	Sell	2,303,322 -102,870	-4%	-$47.9M	0.86%	36
2025 Q2	$976M	Buy	2,406,192 +88,890	+4%	+$37.2M	0.77%	43
2025 Q1	$1.15B	Sell	2,317,302 -187,849	-7%	-$102M	0.95%	33
2024 Q4	$1.3B	Sell	2,505,151 -69,726	-3%	-$38.3M	1.01%	29
2024 Q3	$1.59B	Sell	2,574,877 -92,060	-3%	-$54.5M	1.17%	22
2024 Q2	$1.47B	Sell	2,666,937 -90,620	-3%	-$51.9M	1.07%	25
2024 Q1	$1.6B	Sell	2,757,557 -245,315	-8%	-$138M	1.2%	20
2023 Q4	$1.59B	Sell	3,002,872 -23,120	-0.8%	-$11.2M	1.26%	20
2023 Q3	$1.53B	Sell	3,025,992 -52,115	-2%	-$27.8M	1.29%	20
2023 Q2	$1.61B	Sell	3,078,107 -486,002	-14%	-$262M	1.34%	18
2023 Q1	$2.05B	Sell	3,564,109 -94,465	-3%	-$53.2M	1.79%	14
2022 Q4	$2.01B	Sell	3,658,574 -138,483	-4%	-$73.4M	1.84%	10
2022 Q3	$1.93B	Sell	3,797,057 -55,395	-1%	-$31M	1.86%	13
2022 Q2	$2.09B	Sell	3,852,452 -85,055	-2%	-$46.8M	1.87%	13
2022 Q1	$2.33B	Sell	3,937,507 -167,595	-4%	-$96.3M	1.75%	16
2021 Q4	$2.74B	Sell	4,105,102 -196,360	-5%	-$123M	1.9%	13
2021 Q3	$2.46B	Sell	4,301,462 -75,802	-2%	-$41.6M	1.73%	16
2021 Q2	$2.21B	Sell	4,377,264 -109,910	-2%	-$51.9M	1.48%	17
2021 Q1	$2.05B	Buy	4,487,174 +41,649	+0.9%	+$19.9M	1.43%	18
2020 Q4	$2.07B	Sell	4,445,525 -152,716	-3%	-$71.6M	1.54%	16
2020 Q3	$2.03B	Sell	4,598,241 -142,200	-3%	-$58.7M	1.68%	16
2020 Q2	$1.72B	Sell	4,740,441 -104,910	-2%	-$35.2M	1.47%	19
2020 Q1	$1.37B	Buy	4,845,351 +92,885	+2%	+$29.3M	1.35%	21
2019 Q4	$1.54B	Sell	4,752,466 -8,340	-0.2%	-$2.53M	1.12%	25
2019 Q3	$1.39B	Sell	4,760,806 -209,350	-4%	-$59.9M	1.11%	25
2019 Q2	$1.46B	Sell	4,970,156 -46,680	-0.9%	-$12.9M	1.08%	27
2019 Q1	$1.37B	Sell	5,016,836 -4,110	-0.1%	-$1.02M	1.01%	29
2018 Q4	$1.12B	Buy	5,020,946 +1,572	+0%	+$369K	0.91%	34
2018 Q3	$1.23B	Sell	5,019,374 -68,380	-1%	-$15.7M	0.83%	40
2018 Q2	$1.05B	Sell	5,087,754 -19,430	-0.4%	-$4.12M	0.78%	39
2018 Q1	$1.05B	Sell	5,107,184 -37,060	-0.7%	-$7.78M	0.79%	40
2017 Q4	$977M	Sell	5,144,244 -56,036	-1%	-$10.7M	0.75%	40
2017 Q3	$984M	Sell	5,200,280 -83,090	-2%	-$15M	0.81%	35
2017 Q2	$922M	Buy	5,283,370 +11,880	+0.2%	+$2M	0.79%	36
2017 Q1	$810M	Sell	5,271,490 -33,240	-0.6%	-$5.08M	0.73%	43
2016 Q4	$748M	Buy	5,304,730 +99,860	+2%	+$14.7M	0.74%	42
2016 Q3	$828M	Sell	5,204,870 -157,530	-3%	-$24.3M	0.83%	37
2016 Q2	$792M	Sell	5,362,400 -76,960	-1%	-$11.4M	0.84%	39
2016 Q1	$770M	Buy	5,439,360 +39,470	+0.7%	+$5.29M	0.8%	42
2015 Q4	$766M	Sell	5,399,890 -1,363	-0%	-$182K	0.78%	40
2015 Q3	$660M	Sell	5,401,253 -119,387	-2%	-$15.6M	0.73%	43
2015 Q2	$716M	Buy	5,520,640 +351,650	+7%	+$45.8M	0.7%	40
2015 Q1	$694M	Buy	5,168,990 +681,900	+15%	+$87.9M	0.68%	44
2014 Q4	$562M	Buy	4,487,090 +178,940	+4%	+$21.8M	0.57%	49
2014 Q3	$524M	Buy	4,308,150 +345,920	+9%	+$42.1M	0.56%	49
2014 Q2	$468M	Buy	3,962,230 +400,430	+11%	+$47.1M	0.51%	54
2014 Q1	$428M	Buy	3,561,800 +3,090,800	+656%	+$367M	0.48%	60
2013 Q4	$52.4M	Buy	+471,000	New	+$46.8M	0.06%	155