XTX Topco’s Thermo Fisher Scientific TMO Stock Holding History

XTX Topco’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 Q2	$467K	Buy	+932	New	+$447K	0.01%	2524
2025 Q4	–	Sell	-17,368	Closed	-$8.42M	–	3798
2025 Q3	$8.42M	Sell	17,368 -6,098	-26%	-$2.84M	0.44%	5
2025 Q2	$9.51M	Buy	23,466 +7,565	+48%	+$3.16M	0.39%	19
2025 Q1	$7.91M	Buy	15,901 +13,874	+684%	+$7.51M	0.4%	12
2024 Q4	$1.05M	Buy	+2,027	New	+$1.11M	0.09%	264
2024 Q1	–	Sell	-543	Closed	-$288K	–	2319
2023 Q4	$288K	Buy	+543	New	+$263K	0.06%	657
2022 Q4	–	Sell	-2,339	Closed	-$1.19M	–	1509
2022 Q3	$1.19M	Buy	+2,339	New	+$1.31M	0.29%	27
2022 Q2	–	Sell	-2,688	Closed	-$1.59M	–	1102
2022 Q1	$1.59M	Buy	+2,688	New	+$1.54M	0.7%	9
2021 Q4	–	Sell	-803	Closed	-$459K	–	1001
2021 Q3	$459K	Sell	803 -538	-40%	-$295K	0.15%	215
2021 Q2	$676K	Buy	+1,341	New	+$633K	0.23%	102

Other funds holding TMO

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return

Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return

JP Morgan Chase New York $1.81T AUM 41.13% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

Franklin Resources San Mateo, California $462B AUM 39.16% 1-Year Est. Return

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

Capital World Investors Los Angeles, California $846B AUM 46.74% 1-Year Est. Return

XTX Topco's TMO Position: Q2 2026 in Review

XTX Topco opened a new position in Thermo Fisher Scientific (TMO) in Q2 2026: 932 shares worth $467K. The stake represents 0.01% of the portfolio and ranks #2524 among its holdings. This is a return to the name: XTX Topco previously reported a position in TMO as recently as Q3 2025.

XTX Topco first reported a position in TMO in Q2 2021 and has held it in 10 quarters since. The position peaked at $9.51M in Q2 2025. 2,609 funds tracked by Wall St. Rank hold TMO as of Q2 2026.

XTX Topco held 932 shares of Thermo Fisher Scientific worth $467K as of Q2 2026.
Thermo Fisher Scientific was a new XTX Topco position in Q2 2026.
Thermo Fisher Scientific made up 0.01% of XTX Topco's portfolio in Q2 2026, its #2524 holding.
XTX Topco first reported a position in Thermo Fisher Scientific in Q2 2021 and has held it in 10 quarters since.
XTX Topco's Thermo Fisher Scientific position peaked at $9.51M in Q2 2025.
2,609 funds tracked by Wall St. Rank held Thermo Fisher Scientific as of Q2 2026.

Based on XTX Topco's 13F filing for Q2 2026, filed 14 Aug 2026.