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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 | |
|---|---|---|---|---|---|---|---|
176
PUT
Harley-Davidson
HOG
$2.81B
| $550K | 0.01% |
250,000
-125,000
| -33% | -$3.07M |
2023 Q3
9 quarters
|
|
177
PUT
American Airlines Group
AAL
$8.11B
| $534K | 0.01% |
5,460,000
-3,850,000
| -41% | -$51.9M |
2020 Q1
23 quarters
|
|
178
Sea Limited
SE
$51B
| $510K | 0.01% |
+4,000
| New | +$592K |
2025 Q4
0 quarters
|
|
179
PUT
Charter Communications
CHTR
$12.8B
| $510K | 0.01% |
21,100
+600
| +3% | +$135K |
2024 Q1
7 quarters
|
|
180
Grab
GRAB
$11.7B
| $506K | 0.01% |
+101,500
| New | +$561K |
2025 Q4
0 quarters
|
|
|
SBXD
181
DELISTED
SilverBox Corp IV
SBXD
| $506K | 0.01% |
47,830
| – | – |
2024 Q4
4 quarters
|
|
182
Bain Capital GSS Investment Corp
BCSS
$596M
| $504K | 0.01% |
+50,000
| New | +$504K |
2025 Q4
0 quarters
|
|
183
CALL
Transocean
RIG
$6.5B
| $460K | 0.01% |
400,000
| – | – |
2025 Q2
2 quarters
|
|
184
PUT
Ford
F
$48.3B
| $448K | 0.01% |
900,000
| – | – |
2022 Q2
14 quarters
|
|
185
PUT
Crocs
CROX
$5.74B
| $425K | 0.01% |
81,000
| – | – |
2025 Q3
1 quarter
|
|
186
Skillsoft
SKIL
$49.3M
| $388K | 0.01% |
41,692
| – | – |
2023 Q4
8 quarters
|
|
|
187
PUT
Transocean
RIG
$6.5B
| $188K | 0.01% |
483,400
| – | – |
2018 Q2
30 quarters
|
|
188
PUT
MGM Resorts International
MGM
$7.18B
| $181K | ﹤0.01% |
82,600
| – | – |
2023 Q1
11 quarters
|
|
189
CALL
Comcast
CMCSA
$79B
| $172K | ﹤0.01% |
+100,000
| New | +$2.85M |
2025 Q4
0 quarters
|
|
190
PUT
XPLR Infrastructure LP
XIFR
$929M
| $164K | ﹤0.01% |
20,600
| – | – |
2023 Q3
9 quarters
|
|
191
Bold Eagle Acquisition Corp Right
BEAGR
| $134K | ﹤0.01% |
400,000
| – | – |
2025 Q2
2 quarters
|
|
192
PUT
B&G Foods
BGS
$184M
| $79.5K | ﹤0.01% |
113,600
| – | – |
2023 Q1
11 quarters
|
|
193
Trailblazer Acquisition Corp Warrant
BLZRW
| $68.7K | ﹤0.01% |
+133,333
| New | +$78.2K |
2025 Q4
0 quarters
|
|
194
AMC Entertainment Holdings
AMC
$2.7B
| $61.9K | ﹤0.01% |
39,688
| – | – |
2023 Q3
9 quarters
|
|
195
Blue Acquisition Corp Right
BACCR
| $60.1K | ﹤0.01% |
200,000
| – | – |
2025 Q3
1 quarter
|
|
196
PUT
Calumet Specialty Products
CLMT
$4.85B
| $50.5K | ﹤0.01% |
175,000
| – | – |
2025 Q2
2 quarters
|
|
197
Presidio Production Co Warrants
FTW.WS
| $41.2K | ﹤0.01% |
+80,724
| New | +$44.9K |
2025 Q4
0 quarters
|
|
198
PUT
Herbalife
HLF
$1.45B
| $33K | ﹤0.01% |
82,400
| – | – |
2024 Q1
7 quarters
|
|
|
SVACW
199
DELISTED
Spring Valley Acquisition Corp III Warrant
SVACW
| $31.5K | ﹤0.01% |
+50,000
| New | +$39.7K |
2025 Q4
0 quarters
|
|
200
PUT
Starwood Property Trust
STWD
$4.51B
| $30.2K | ﹤0.01% |
172,500
| – | – |
2021 Q2
18 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.