Hudson Bay Capital Management’s Thermo Fisher Scientific TMO Stock Holding History

Hudson Bay Capital 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
2025 Q3	–	Sell	-10,500	Closed	-$4.26M	–	1672
2025 Q2	$4.26M	Buy	10,500 +9,100	+650%	+$3.8M	0.01%	585
2025 Q1	$697K	Buy	+1,400	New	+$758K	﹤0.01%	977
2018 Q2	–	Sell	-25,000	Closed	-$5.16M	–	974
2018 Q1	$5.16M	Buy	+25,000	New	+$5.25M	0.11%	221
2017 Q3	–	Sell	-25,000	Closed	-$4.36M	–	525
2017 Q2	$4.36M	Hold	25,000	–	–	0.09%	211
2017 Q1	$3.84M	Buy	25,000 +16,800	+205%	+$2.57M	0.05%	320
2016 Q4	$1.16M	Buy	+8,200	New	+$1.21M	0.02%	455

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 $3.38T AUM 44.17% 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

Hudson Bay Capital Management's TMO Position: Q2 2026 in Review

Hudson Bay Capital Management opened a new position in Thermo Fisher Scientific (TMO) in Q2 2026: 520 shares worth $261K. The stake represents ﹤0.01% of the portfolio and ranks #1080 among its holdings. This is a return to the name: Hudson Bay Capital Management previously reported a position in TMO as recently as Q3 2025.

Hudson Bay Capital Management first reported a position in TMO in Q3 2013 and has held it in 20 quarters since. The position peaked at $43.3M in Q1 2018. 2,630 funds tracked by Wall St. Rank hold TMO as of Q2 2026.

Hudson Bay Capital Management held 520 shares of Thermo Fisher Scientific worth $261K as of Q2 2026.
Thermo Fisher Scientific was a new Hudson Bay Capital Management position in Q2 2026.
Thermo Fisher Scientific made up ﹤0.01% of Hudson Bay Capital Management's portfolio in Q2 2026, its #1080 holding.
Hudson Bay Capital Management first reported a position in Thermo Fisher Scientific in Q3 2013 and has held it in 20 quarters since.
Hudson Bay Capital Management's Thermo Fisher Scientific position peaked at $43.3M in Q1 2018.
2,630 funds tracked by Wall St. Rank held Thermo Fisher Scientific as of Q2 2026.

Based on Hudson Bay Capital Management's 13F filing for Q2 2026, filed 14 Aug 2026.