American Century Companies’s Thermo Fisher Scientific TMO Stock Holding History

American Century Companies’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	$204M	Buy	414,395 +41,929	+11%	+$22.8M	0.1%	184
2025 Q4	$216M	Buy	372,466 +98,851	+36%	+$55.9M	0.11%	167
2025 Q3	$133M	Buy	273,615 +170,888	+166%	+$79.5M	0.07%	296
2025 Q2	$41.7M	Sell	102,727 -1,051	-1%	-$439K	0.02%	754
2025 Q1	$51.6M	Sell	103,778 -6,028	-5%	-$3.26M	0.03%	594
2024 Q4	$57.1M	Sell	109,806 -6,251	-5%	-$3.44M	0.03%	562
2024 Q3	$71.8M	Sell	116,057 -10,239	-8%	-$6.06M	0.04%	453
2024 Q2	$69.8M	Sell	126,296 -6,223	-5%	-$3.57M	0.04%	428
2024 Q1	$77M	Sell	132,519 -18,056	-12%	-$10.1M	0.05%	401
2023 Q4	$79.9M	Buy	150,575 +24,363	+19%	+$11.8M	0.05%	360
2023 Q3	$63.9M	Sell	126,212 -4,980	-4%	-$2.65M	0.05%	384
2023 Q2	$68.4M	Buy	131,192 +8,005	+6%	+$4.32M	0.05%	355
2023 Q1	$70.9M	Sell	123,187 -11,961	-9%	-$6.74M	0.06%	347
2022 Q4	$74.4M	Sell	135,148 -41,578	-24%	-$22M	0.06%	329
2022 Q3	$89.6M	Buy	176,726 +68,749	+64%	+$38.5M	0.08%	278
2022 Q2	$58.7M	Buy	107,977 +13,202	+14%	+$7.27M	0.05%	384
2022 Q1	$56M	Buy	94,775 +156	+0.2%	+$89.6K	0.04%	423
2021 Q4	$63.1M	Sell	94,619 -9,938	-10%	-$6.2M	0.04%	422
2021 Q3	$59.7M	Buy	104,557 +4,716	+5%	+$2.59M	0.04%	412
2021 Q2	$50.4M	Sell	99,841 -34,985	-26%	-$16.5M	0.03%	463
2021 Q1	$61.5M	Buy	134,826 +43,117	+47%	+$20.6M	0.05%	399
2020 Q4	$42.7M	Buy	91,709 +4,337	+5%	+$2.03M	0.03%	430
2020 Q3	$38.6M	Buy	87,372 +42,763	+96%	+$17.7M	0.03%	402
2020 Q2	$16.2M	Buy	44,609 +42,893	+2,500%	+$14.4M	0.02%	567
2020 Q1	$487K	Sell	1,716 -44,112	-96%	-$13.9M	﹤0.01%	1168
2019 Q4	$14.9M	Sell	45,828 -276,684	-86%	-$83.9M	0.01%	590
2019 Q3	$93.9M	Sell	322,512 -122,839	-28%	-$35.2M	0.09%	247
2019 Q2	$131M	Buy	445,351 +2,980	+0.7%	+$821K	0.13%	209
2019 Q1	$121M	Buy	442,371 +61,340	+16%	+$15.3M	0.12%	224
2018 Q4	$85.3M	Buy	+381,031	New	+$89.4M	0.1%	258
2018 Q1	–	Sell	-247,906	Closed	-$47.1M	–	1333
2017 Q4	$47.1M	Buy	247,906 +172,484	+229%	+$33M	0.05%	387
2017 Q3	$14.3M	Sell	75,422 -2,522	-3%	-$457K	0.01%	595
2017 Q2	$13.6M	Buy	77,944 +58,421	+299%	+$9.81M	0.01%	606
2017 Q1	$3M	Sell	19,523 -266,228	-93%	-$40.7M	﹤0.01%	982
2016 Q4	$40.3M	Sell	285,751 -197,989	-41%	-$29.2M	0.04%	405
2016 Q3	$76.9M	Sell	483,740 -96,353	-17%	-$14.8M	0.08%	292
2016 Q2	$85.7M	Buy	580,093 +12,814	+2%	+$1.89M	0.1%	265
2016 Q1	$80.3M	Buy	567,279 +137,750	+32%	+$18.5M	0.09%	288
2015 Q4	$60.9M	Buy	+429,529	New	+$57.3M	0.07%	334
2014 Q2	–	Sell	-2,545	Closed	-$306K	–	1515
2014 Q1	$306K	Sell	2,545 -222	-8%	-$26.4K	﹤0.01%	1399
2013 Q4	$308K	Buy	2,767 +28	+1%	+$2.78K	﹤0.01%	1389
2013 Q3	$252K	Sell	2,739 -40,329	-94%	-$3.65M	﹤0.01%	1420
2013 Q2	$3.65M	Buy	+43,068	New	+$3.59M	﹤0.01%	939

Other funds holding TMO

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return

Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

Franklin Resources San Mateo, California $408B AUM 30.18% 1-Year Est. Return

Capital World Investors Los Angeles, California $733B AUM 35.63% 1-Year Est. Return

JP Morgan Chase New York $1.56T AUM 27.86% 1-Year Est. Return

T. Rowe Price Associates Baltimore, Maryland $865B AUM 30.76% 1-Year Est. Return

American Century Companies's TMO Position: Q1 2026 in Review

American Century Companies increased its Thermo Fisher Scientific (TMO) stake by 11% in Q1 2026, buying an estimated $22.8M and bringing the position to 414,395 shares worth $204M. The position accounts for 0.1% of the portfolio, ranked #184.

American Century Companies first reported a position in TMO in Q2 2013 and has held it in 43 quarters since. The position peaked at $216M in Q4 2025. 2,589 funds tracked by Wall St. Rank hold TMO as of Q1 2026.

American Century Companies held 414,395 shares of Thermo Fisher Scientific worth $204M as of Q1 2026.
American Century Companies bought 41,929 Thermo Fisher Scientific shares in Q1 2026, an estimated $22.8M.
Thermo Fisher Scientific made up 0.1% of American Century Companies's portfolio in Q1 2026, its #184 holding.
American Century Companies first reported a position in Thermo Fisher Scientific in Q2 2013 and has held it in 43 quarters since.
American Century Companies's Thermo Fisher Scientific position peaked at $216M in Q4 2025.
2,589 funds tracked by Wall St. Rank held Thermo Fisher Scientific as of Q1 2026.

Based on American Century Companies's 13F filing for Q1 2026, filed 15 May 2026.