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UBS O'Connor Portfolio holdings
AUM
$3.76B
Turnover
54.76%
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
(+12%)
Cap. Flow
+$232M
Cap. Flow % of AUM
Cap. Flow %
6.17%
Top 10 Holdings %
Top 10 Hldgs %
70.32%
Holding
347
New
79
Increased
17
Reduced
40
Closed
111
Avg Time Held
Equity + Options
0.8
years
Top 10 Avg Time Held
Equity + Options
0.2
years
Top 20 Avg Time Held
Equity + Options
0.2
years
Avg Time Held Equity only
0.6
years
Top 10 Avg Time Held Equity only
0.2
years
Top 20 Avg Time Held Equity only
0.2
years
Top Buys
| Rank | Stock | Value |
|---|---|---|
| 1 |
Dayforce
DAY
|
+$282M |
| 2 |
Comerica
CMA
|
+$267M |
| 3 |
RNAM
Avidity Biosciences
RNAM
|
+$240M |
| 4 |
Hologic
HOLX
|
+$190M |
| 5 |
Exact Sciences
EXAS
|
+$143M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
VRNA
Verona Pharma
VRNA
|
+$457M |
| 2 |
Kellanova
K
|
+$290M |
| 3 |
Mr. Cooper
COOP
|
+$169M |
| 4 |
Interpublic Group of Companies
IPG
|
+$132M |
| 5 |
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 | Held Since | |
|---|---|---|---|---|---|---|---|
76
GP-Act III Acquisition Corp
GPAT
$179M
| $2.68M | 0.07% |
250,000
-100,000
| -29% | -$1.07M |
2025 Q2
2 quarters
|
|
|
AAM
77
DELISTED
AA Mission Acquisition Corp
AAM
| $2.67M | 0.07% |
250,000
| – | – |
2025 Q3
1 quarter
|
|
78
Stellar V Capital Corp
SVCC
$231M
| $2.59M | 0.07% |
250,000
| – | – |
2025 Q2
2 quarters
|
|
79
Blue Water Acquisition Corp III
BLUW
$335M
| $2.58M | 0.07% |
250,000
| – | – |
2025 Q3
1 quarter
|
|
|
FAC
80
Factorial Energy Inc
FAC
$519M
| $2.57M | 0.07% |
250,000
| – | – |
2025 Q2
2 quarters
|
|
81
New Providence Acquisition Corp III
NPAC
$403M
| $2.56M | 0.07% |
250,000
| – | – |
2025 Q2
2 quarters
|
|
82
Pfizer
PFE
$168B
| $2.56M | 0.07% |
+102,623
| New | +$2.59M |
2025 Q4
0 quarters
|
|
83
Collective Acquisition Corp
CCAQ
$213M
| $2.55M | 0.07% |
250,000
| – | – |
2025 Q2
2 quarters
|
|
84
Presidio Production Co
FTW
$299M
| $2.54M | 0.07% |
242,175
| – | – |
2024 Q4
4 quarters
|
|
85
Thayer Ventures Acquisition Corporation II
TVAI
$284M
| $2.53M | 0.07% |
250,000
| – | – |
2025 Q3
1 quarter
|
|
86
Talon Capital Corp
TLNC
$347M
| $2.52M | 0.07% |
+250,000
| New | +$2.52M |
2025 Q4
0 quarters
|
|
87
Oxley Bridge Acquisition Ltd
OBA
| $2.52M | 0.07% |
250,000
| – | – |
2025 Q3
1 quarter
|
|
88
Pioneer Acquisition I Corp
PACH
$295M
| $2.52M | 0.07% |
250,000
| – | – |
2025 Q3
1 quarter
|
|
89
Solarius Capital Acquisition Corp
SOCA
$243M
| $2.51M | 0.07% |
250,000
| – | – |
2025 Q3
1 quarter
|
|
90
GE Vernova
GEV
$242B
| $2.51M | 0.07% |
+3,834
| New | +$2.34M |
2025 Q4
0 quarters
|
|
91
M3-Brigade Acquisition VI Corp
MBVI
$441M
| $2.5M | 0.07% |
+250,000
| New | +$2.51M |
2025 Q4
0 quarters
|
|
92
Highview Merger Corp
HVMC
$303M
| $2.5M | 0.07% |
+250,000
| New | +$2.5M |
2025 Q4
0 quarters
|
|
93
CSLM Digital Asset Acquisition Corp III
KOYN
$323M
| $2.49M | 0.07% |
250,000
| – | – |
2025 Q3
1 quarter
|
|
94
Bold Eagle Acquisition Corp
BEAG
$334M
| $2.32M | 0.06% |
219,217
-280,783
| -56% | -$2.99M |
2025 Q2
2 quarters
|
|
95
TJX Companies
TJX
$162B
| $2.3M | 0.06% |
+15,000
| New | +$2.22M |
2025 Q4
0 quarters
|
|
96
Range Capital Acquisition Corp II
RNGT
$319M
| $2.25M | 0.06% |
+225,000
| New | +$2.25M |
2025 Q4
0 quarters
|
|
97
ASML
ASML
$635B
| $2.14M | 0.06% |
+2,000
| New | +$2.09M |
2025 Q4
0 quarters
|
|
98
Wabtec
WAB
$48.4B
| $2.13M | 0.06% |
+10,000
| New | +$2.05M |
2025 Q4
0 quarters
|
|
|
CCIX
99
DELISTED
Churchill Capital Corp IX
CCIX
| $2.12M | 0.06% |
199,274
-50,726
| -20% | -$540K |
2025 Q2
2 quarters
|
|
100
Archimedes Tech SPAC Partners II Co
ATII
$254M
| $2.07M | 0.06% |
200,000
| – | – |
2025 Q2
2 quarters
|
|
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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.