UBS O'Connor’s Thermo Fisher Scientific TMO Stock Holding History

UBS O'Connor’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	-3,770	Closed	-$1.53M	–	443
2025 Q2	$1.53M	Buy	+3,770	New	+$1.58M	0.04%	176
2023 Q4	–	Sell	-2,950	Closed	-$1.49M	–	602
2023 Q3	$1.49M	Sell	2,950 -5,500	-65%	-$2.93M	0.03%	287
2023 Q2	$4.41M	Buy	+8,450	New	+$4.56M	0.09%	138
2016 Q1	–	Sell	-18,000	Closed	-$2.55M	–	532
2015 Q4	$2.55M	Buy	+18,000	New	+$2.4M	0.02%	296
2015 Q3	–	Sell	-7,066	Closed	-$916K	–	750
2015 Q2	$916K	Buy	7,066 +3,960	+127%	+$516K	0.01%	606
2015 Q1	$418K	Buy	+3,106	New	+$400K	﹤0.01%	691
2013 Q3	–	Sell	-72,000	Closed	-$6.09M	–	557
2013 Q2	$6.09M	Buy	+72,000	New	+$5.99M	0.11%	216

Other funds holding TMO

Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return

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

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

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

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

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

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

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

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

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

UBS O'Connor's TMO Position: Q3 2025 in Review

UBS O'Connor sold out of Thermo Fisher Scientific (TMO) in Q3 2025, closing a stake of 3,770 shares — an estimated $1.53M sold.

UBS O'Connor first reported a position in TMO in Q2 2013 and held it in 7 quarters. The position peaked at $6.09M in Q2 2013. 2,515 funds tracked by Wall St. Rank hold TMO as of Q3 2025.

UBS O'Connor reported no remaining Thermo Fisher Scientific position as of Q3 2025 after selling out during the quarter.
UBS O'Connor sold 3,770 Thermo Fisher Scientific shares in Q3 2025, an estimated $1.53M.
UBS O'Connor first reported a position in Thermo Fisher Scientific in Q2 2013 and held it in 7 quarters.
UBS O'Connor's Thermo Fisher Scientific position peaked at $6.09M in Q2 2013.
2,515 funds tracked by Wall St. Rank held Thermo Fisher Scientific as of Q3 2025.

Based on UBS O'Connor's 13F filing for Q3 2025, filed 14 Nov 2025.