BlackRock’s Thermo Fisher Scientific TMO Stock Holding History

BlackRock’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	–	Sell	-23,500	Closed	-$11.6M	–	5886
2026 Q1	$11.6M	Buy	+23,500	New	+$12.8M	﹤0.01%	3403
2024 Q2	–	Sell	-700	Closed	-$407K	–	5350
2024 Q1	$407K	Buy	+700	New	+$393K	﹤0.01%	4426
2021 Q4	–	Sell	-166,600	Closed	-$95.2M	–	5858
2021 Q3	$95.2M	Buy	+166,600	New	+$91.4M	﹤0.01%	2250

Other funds holding TMO

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

T. Rowe Price Associates Baltimore, Maryland $999B AUM 46.22% 1-Year Est. Return

BlackRock's TMO Position: Q2 2026 in Review

BlackRock increased its Thermo Fisher Scientific (TMO) stake by 1.6% in Q2 2026, buying an estimated $236M and bringing the position to 30,919,632 shares worth $15.5B. The position accounts for 0.23% of the portfolio, ranked #67.

BlackRock first reported a position in TMO in Q2 2013 and has held it in 53 quarters since. The position peaked at $20.7B in Q4 2021. 2,620 funds tracked by Wall St. Rank hold TMO as of Q2 2026.

BlackRock held 30,919,632 shares of Thermo Fisher Scientific worth $15.5B as of Q2 2026.
BlackRock bought 492,440 Thermo Fisher Scientific shares in Q2 2026, an estimated $236M.
Thermo Fisher Scientific made up 0.23% of BlackRock's portfolio in Q2 2026, its #67 holding.
BlackRock first reported a position in Thermo Fisher Scientific in Q2 2013 and has held it in 53 quarters since.
BlackRock's Thermo Fisher Scientific position peaked at $20.7B in Q4 2021.
2,620 funds tracked by Wall St. Rank held Thermo Fisher Scientific as of Q2 2026.

Based on BlackRock's 13F filing for Q2 2026, filed 7 Aug 2026.