UBS O'Connor’s Amphenol APH Stock Holding History

UBS O'Connor’s Portfolio APH Stock Details APH Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2025 Q4	$2.99M	Sell	44,220 -55,780	-56%	-$3.73M	0.08%	78
2025 Q3	$6.19M	Buy	+100,000	New	+$5.49M	0.19%	55
2025 Q2	–	Sell	-239,880	Closed	-$7.87M	–	377
2025 Q1	$7.87M	Buy	239,880 +78,080	+48%	+$2.66M	0.19%	50
2024 Q4	$5.62M	Buy	+161,800	New	+$5.66M	0.14%	80
2024 Q3	–	Sell	-378,200	Closed	-$12.7M	–	505
2024 Q2	$12.7M	Sell	378,200 -79,200	-17%	-$2.5M	0.36%	41
2024 Q1	$13.2M	Buy	457,400 +254,800	+126%	+$6.68M	0.38%	46
2023 Q4	$5.02M	Sell	202,600 -53,200	-21%	-$1.18M	0.16%	79
2023 Q3	$5.37M	Buy	255,800 +60,000	+31%	+$1.29M	0.1%	113
2023 Q2	$4.16M	Buy	+195,800	New	+$3.8M	0.09%	144
2019 Q3	–	Sell	-157,712	Closed	-$1.89M	–	315
2019 Q2	$1.89M	Sell	157,712 -62,888	-29%	-$757K	0.04%	147
2019 Q1	$2.6M	Buy	+220,600	New	+$2.47M	0.07%	140
2018 Q4	–	Sell	-451,288	Closed	-$5.3M	–	238
2018 Q3	$5.3M	Buy	451,288 +193,672	+75%	+$2.25M	0.12%	102
2018 Q2	$2.81M	Buy	+257,616	New	+$2.8M	0.06%	148

Other funds holding APH

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

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

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

T. Rowe Price Associates Baltimore, Maryland $999B AUM 46.22% 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

Capital International Investors Los Angeles, California $484B AUM 34.9% 1-Year Est. Return

Norges Bank Oslo, Norway $1T AUM

Bank of America Charlotte, North Carolina $1.55T AUM 33.47% 1-Year Est. Return

UBS O'Connor's APH Position: Q4 2025 in Review

UBS O'Connor reduced its Amphenol (APH) stake by 56% in Q4 2025, selling an estimated $3.73M and leaving 44,220 shares worth $2.99M. The position accounts for 0.08% of the portfolio, ranked #78.

UBS O'Connor first reported a position in APH in Q2 2018 and has held it in 13 quarters since. The position peaked at $13.2M in Q1 2024. 2,055 funds tracked by Wall St. Rank hold APH as of Q4 2025.

UBS O'Connor held 44,220 shares of Amphenol worth $2.99M as of Q4 2025.
UBS O'Connor sold 55,780 Amphenol shares in Q4 2025, an estimated $3.73M.
Amphenol made up 0.08% of UBS O'Connor's portfolio in Q4 2025, its #78 holding.
UBS O'Connor first reported a position in Amphenol in Q2 2018 and has held it in 13 quarters since.
UBS O'Connor's Amphenol position peaked at $13.2M in Q1 2024.
2,055 funds tracked by Wall St. Rank held Amphenol as of Q4 2025.

Based on UBS O'Connor's 13F filing for Q4 2025, filed 13 Feb 2026.