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UOC

UBS O'Connor Portfolio holdings

AUM $3.76B
1-Year Est. Return 62.41%
This Fund
S&P 500
This Quarter Est. Return
+16.38%
1 Year Est. Return
+62.41%
3 Year Est. Return
+179.84%
5 Year Est. Return
+371.69%
10 Year Est. Return
+1,534.25%
AUM
$3.76B
AUM Growth
+$415M
Cap. Flow
+$232M
Cap. Flow %
6.17%
Top 10 Hldgs %
70.32%
Holding
347
New
79
Increased
17
Reduced
40
Closed
111

Top Buys

Rank Stock Value
1
DAY
Dayforce
DAY
+$282M
2
CMA
Comerica
CMA
+$267M
3
RNAM
Avidity Biosciences
RNAM
+$240M
4
HOLX
Hologic
HOLX
+$190M
5
EXAS
Exact Sciences
EXAS
+$143M

Top Sells

Rank Stock Value
1
VRNA
Verona Pharma
VRNA
+$457M
2
K
Kellanova
K
+$290M
3
COOP
Mr. Cooper
COOP
+$169M
4
IPG
Interpublic Group of Companies
IPG
+$132M
5
INFA
Informatica
INFA
+$113M

Sector Composition

Rank Sector Weight
1 Technology 25.61%
2 Healthcare 19.41%
3 Industrials 18.06%
4 Financials 17.96%
5 Communication Services 7.48%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
GSHR
101
Gesher Acquisition Corp II
GSHR
$216M
$2.05M 0.05%
200,000
– –
CCII
102
Cohen Circle Acquisition Corp II
CCII
$359M
$2.05M 0.05%
200,000
– –
BACC
103
Blue Acquisition Corp
BACC
$293M
$2.04M 0.05%
200,000
– –
CRAQ
104
Cal Redwood Acquisition Corp
CRAQ
$325M
$2.04M 0.05%
200,000
– –
BCAR
105
DELISTED
D. Boral ARC Acquisition I Corp
BCAR
$2.01M 0.05%
200,000
– –
CHKP icon
106
Check Point Software Technologies
CHKP
$14B
$1.92M 0.05%
+10,370
New +$2M
BURL icon
107
Burlington
BURL
$16.2B
$1.88M 0.05%
+6,500
New +$1.76M
CEPF
108
Cantor Equity Partners IV
CEPF
$594M
$1.79M 0.05%
174,570
-125,430
-42% -$1.3M
AXIN
109
Axiom Intelligence Acquisition Corp 1
AXIN
$282M
$1.76M 0.05%
175,000
– –
OTGA
110
OTG Acquisition Corp I
OTGA
$302M
$1.75M 0.05%
+175,000
New +$1.75M
AACB
111
DELISTED
Artius II Acquisition Inc
AACB
$1.65M 0.04%
160,000
– –
ALF
112
Centurion Acquisition Corp
ALF
$391M
$1.6M 0.04%
150,000
– –
POLE
113
Andretti Acquisition Corp II
POLE
$318M
$1.58M 0.04%
150,000
– –
MLAC
114
DELISTED
Mountain Lake Acquisition Corp
MLAC
$1.56M 0.04%
149,912
-100,088
-40% -$1.04M
XRPN
115
Armada Acquisition Corp II
XRPN
$333M
$1.54M 0.04%
150,000
– –
CMI icon
116
Cummins
CMI
$75.1B
$1.53M 0.04%
+3,000
New +$1.4M
SOUL
117
Soulpower Acquisition Corp
SOUL
$355M
$1.52M 0.04%
150,000
– –
FCRS
118
FutureCrest Acquisition Corp
FCRS
$367M
$1.51M 0.04%
+150,000
New +$1.52M
PAII
119
Pyrophyte Acquisition Corp II
PAII
$281M
$1.51M 0.04%
150,000
– –
EVAC
120
EQV Ventures Acquisition Corp II
EVAC
$601M
$1.5M 0.04%
150,000
– –
TSEM icon
121
Tower Semiconductor
TSEM
$23.3B
$1.5M 0.04%
12,739
-26,305
-67% -$2.53M
YCY
122
AA Mission Acquisition Corp II
YCY
$151M
$1.49M 0.04%
+150,000
New +$1.49M
VACI
123
Viking Acquisition Corp I
VACI
$270M
$1.49M 0.04%
+150,000
New +$1.49M
WBD icon
124
Warner Bros
WBD
$71.1B
$1.44M 0.04%
50,000
– –
ALCY
125
DELISTED
Alchemy Investments Acquisition Corp 1
ALCY
$1.42M 0.04%
100,248
– –
3 4
5
6 7

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ACI
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RC
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CGL
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JCM
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MPM
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UBS O'Connor's Q4 2025 Portfolio in Review

As of Q4 2025, UBS O'Connor held 347 positions worth $3.76B, up 12% from $3.34B the previous quarter. Its ten largest holdings account for 70% of the portfolio.

UBS O'Connor deployed $232M of net new capital in Q4 2025, opening 79 new positions and adding to 17 existing holdings. Its largest new stake was Dayforce: 4,096,708 shares worth $283M.

By sector, the portfolio is most concentrated in Technology at 26% of assets, up from 22% a quarter earlier, followed by Healthcare and Industrials.

On the sell side, the largest reduction was NVIDIA, an estimated $17M trimmed.

  • UBS O'Connor's largest Q4 2025 buy was Dayforce: 4,096,708 shares worth $283M.
  • UBS O'Connor added most to Air Lease Corp in Q4 2025, an estimated $142M increase.
  • UBS O'Connor's biggest Q4 2025 reduction was NVIDIA, cutting an estimated $17M.
  • UBS O'Connor fully exited Verona Pharma in Q4 2025, selling an estimated $457M.
  • UBS O'Connor's ten largest holdings make up 70% of its $3.76B portfolio in Q4 2025.
  • UBS O'Connor opened 79 new positions and closed 111 in Q4 2025.
  • UBS O'Connor's portfolio value rose 12% quarter-over-quarter to $3.76B.

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