Latest UBS OCONNOR LLC Stock Portfolio

$3.38Billion– No. of Holdings #193

UBS OCONNOR LLC Performance:

2025 Q4: -0.82%YTD: 8.01%2024: 1.15%

Performance for 2025 Q4 is -0.82%, and YTD is 8.01%, and 2024 is 1.15%.

About UBS OCONNOR LLC and 13F Hedge Fund Stock Holdings

OCONNOR, A Distinct Business Unit of UBS ASSET MANAGEMENT AMERICAS (LLC) is a hedge fund based in Chicago, IL. On 2026-05-15, the fund reported it's updated stock portfolio. In the 13F Holdings report, OCONNOR, A Distinct Business Unit of UBS ASSET MANAGEMENT AMERICAS (LLC) reported an equity portfolio of $3.4 Billions as of 31 Dec, 2025.

The top stock holdings of OCONNOR, A Distinct Business Unit of UBS ASSET MANAGEMENT AMERICAS (LLC) are CYBR, CMA, CDAY. The fund has invested 13.8% of it's portfolio in CYBERARK S and 8.5% of portfolio in COMERICA I.

They significantly reduced their stock positions in PLYMOUTH I (PLYM). OCONNOR, A Distinct Business Unit of UBS ASSET MANAGEMENT AMERICAS (LLC) opened new stock positions in COMERICA I (CMA), DAYFORCE I (CDAY) and AVIDITY BI (RNA). The fund showed a lot of confidence in some stocks as they added substantially to AIR LEASE (AL), FRONTIER C (FYBR) and CYBERARK S (CYBR).

UBS OCONNOR LLC Equity Portfolio Value

Last Reported on: 13 Feb, 2026

UBS OCONNOR LLC Annual Return Estimates Vs S&P 500

Our best estimate is that OCONNOR, A Distinct Business Unit of UBS ASSET MANAGEMENT AMERICAS (LLC) made a return of -0.82% in the last quarter. In trailing 12 months, it's portfolio return was 8.01%.

Performance
S&P 500

New Buys

Ticker	$ Bought
comerica i	287,909,000
dayforce i	283,328,000
avidity bi	268,078,000
hologic in	194,049,000
exact scie	180,697,000
cadence ba	124,956,000
confluent	120,073,000
exact scie	93,672,000

New stocks bought by UBS OCONNOR LLC

Additions

Ticker	% Inc.
broadcom i	892
snowflake	392
air lease	271
american e	210
toast inc	150
tko group	150
masco corp	138
axalta coa	64.93

Additions to existing portfolio by UBS OCONNOR LLC

Reductions

Ticker	% Reduced
packaging	-94.34
american e	-87.5
cameco cor	-84.87
meta platf	-82.36
entergy co	-76.56
c h robins	-74.69
tower semi	-67.37
mercadolib	-61.95

UBS OCONNOR LLC reduced stake in above stock

Sold off

Ticker	$ Sold
snowflake	-30,390,000
beyond mea	-3,800,000
halozyme t	-20,664,000
american w	-16,048,000
duke energ	-16,117,500
spotify us	-13,700,000
halozyme t	-9,870,000
interpubli	-132,028,000

UBS OCONNOR LLC got rid off the above stocks

Sector Distribution

OCONNOR, A Distinct Business Unit of UBS ASSET MANAGEMENT AMERICAS (LLC) has about 28% of it's holdings in Others sector.

Others
Healthcare
Technology
Financial Services
Industrials
Communication Services
Consumer Cyclical
Utilities

Sector	%
Others	28
Healthcare	22.9
Technology	15.2
Financial Services	10.1
Industrials	9.2
Communication Services	8.7
Consumer Cyclical	3.4
Utilities	1.9

Market Cap. Distribution

OCONNOR, A Distinct Business Unit of UBS ASSET MANAGEMENT AMERICAS (LLC) has about 50.2% of it's portfolio invested in the large-cap and mega-cap stocks.

LARGE-CAP
UNALLOCATED
MID-CAP
MEGA-CAP
NANO-CAP

Category	%
LARGE-CAP	48.2
UNALLOCATED	28
MID-CAP	20.2
MEGA-CAP	2
NANO-CAP	1.1

Stocks belong to which Index?

About 46.5% of the stocks held by OCONNOR, A Distinct Business Unit of UBS ASSET MANAGEMENT AMERICAS (LLC) either belong to S&P 500 or RUSSELL 2000 index.

Others
S&P 500
RUSSELL 2000

Index	%
Others	53.5
S&P 500	33
RUSSELL 2000	13.5

Top 5 Winners (%)		%
	syntec opt	199.9 %
	brand enga	183.2 %
AMAO	royalty mg	168.2 %
	blue acqui	100.5 %
COHR	coherent c	59.2 %

Top 5 Winners ($)		$
FYBR	frontier c	4.6 M
MAT	mattel inc	2.9 M
COHR	coherent c	1.4 M
CHRW	c h robins	1.3 M
TSEM	tower semi	1.2 M

Top 5 Losers (%)		%
	bolt projs	-57.8 %
AMC	amc entmt	-46.2 %
	cid holdco	-44.7 %
	gen digita	-35.2 %
SKIL	skillsoft	-28.6 %

Top 5 Losers ($)		$
CYBR	cyberark s	-37.6 M
MELI	mercadolib	-1.5 M
LYV	live natio	-1.1 M
URI	united ren	-1.0 M
BTG	b2gold cor	-0.9 M

UBS OCONNOR LLC Holdings Map

This heatmap illustrates the top 50 positions within the fund's portfolio.

Current Stock Holdings of UBS OCONNOR LLC

OCONNOR, A Distinct Business Unit of UBS ASSET MANAGEMENT AMERICAS (LLC) has 193 stocks in it's portfolio. About 70.5% of the portfolio is in top 10 stocks. CYBR proved to be the most loss making stock for the portfolio. FYBR was the most profitable stock for OCONNOR, A Distinct Business Unit of UBS ASSET MANAGEMENT AMERICAS (LLC) last quarter.

Last Reported on: 13 Feb, 2026

Ticker	Namesorted ascending	% Portfolio	Shares Held	$ Value	Type	% Change
ACEL	accel ente	0.08	246,728	2,815,170	unchanged	0.00

ACMR	acm resh i	0.04	35,958	1,418,540	reduced	-54.71

ADT	adt inc de	0.00	0.00	0.00	sold off	-100

AEP	american e	0.44	130,250	15,019,100	added	210

AL	air lease	5.78	3,039,450	195,224,000	added	271

AMAO	royalty mg	0.00	221,686	28,841	unchanged	0.00

AMC	amc entmt	0.00	39,688	61,913	unchanged	0.00

ANET	arista net	0.00	0.00	0.00	sold off	-100

APD	air prods	0.00	0.00	0.00	sold off	-100

APH	amphenol c	0.09	22,110	2,987,940	reduced	-55.78

ARCO	arcos dora	0.00	0.00	0.00	sold off	-100

ASML	asml holdi	0.06	2,000	2,139,720	new

AVGO	broadcom i	0.81	78,896	27,305,900	added	892

AXTA	axalta coa	0.14	140,600	4,542,790	added	64.93

BA	boeing co	0.33	51,535	11,189,300	new

BAP	credicorp	0.00	0.00	0.00	sold off	-100

BBAR	banco bbva	0.00	0.00	0.00	sold off	-100

BILI	bilibili i	0.00	0.00	0.00	sold off	-100

BKNG	booking ho	0.13	20,000	4,284,260	new

BSAC	banco sant	0.00	0.00	0.00	sold off	-100