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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
MRLN
326
Merlin Inc
MRLN
$340M
– –
-450,000
Closed -$4.68M
NHICW
327
NewHold Investment Corp III Warrants
NHICW
$16.7M
– –
-187,499
Closed -$60.7K
CEPT
328
DELISTED
Cantor Equity Partners II
CEPT
– –
-50,000
Closed -$528K
TVA
329
Texas Ventures Acquisition III Corp
TVA
$317M
– –
-275,466
Closed -$2.95M
TVACW
330
Texas Ventures Acquisition III Corp Warrants
TVACW
$3.6M
– –
-50,000
Closed -$56.3K
CHAC
331
DELISTED
Crane Harbor Acquisition Corp
CHAC
– –
-250,000
Closed -$2.53M
BRRWW
332
ProCap Financial Inc
BRRWW
$3.73M
– –
-89,434
Closed -$103K
PMTR
333
Perimeter Acquisition Corp I
PMTR
$321M
– –
-100,000
Closed -$1.02M
FACWW
334
Factorial Energy Inc Warrant
FACWW
$10.3M
– –
-165,500
Closed -$44.3K
RAL
335
Ralliant Corp
RAL
$6.94B
– –
-87,000
Closed -$3.8M
TVAIR
336
Thayer Ventures Acquisition Corporation II Rights
TVAIR
– –
-250,000
Closed -$43.8K
AXINR
337
Axiom Intelligence Acquisition Corp 1 Right
AXINR
– –
-175,000
Closed -$27.6K
OBAWW
338
Oxley Bridge Acquisition Ltd Warrants
OBAWW
$2.3M
– –
-125,000
Closed -$22.6K
SPEGR
339
Silver Pegasus Acquisition Corp Rights
SPEGR
– –
-120,000
Closed -$27.6K
PAII.WS
340
Pyrophyte Acquisition Corp II Warrants
PAII.WS
– –
-75,000
Closed -$26.3K
ONCHW
341
1RT Acquisition Corp Warrant
ONCHW
$1.94M
– –
-24,800
Closed -$22.7K
10 11 12 13
14

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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.