OCONNOR, A Distinct Business Unit of UBS ASSET MANAGEMENT AMERICAS (LLC)
Follow13F filer, CIK 1132716, CHICAGO, IL
OCONNOR, A Distinct Business Unit of UBS ASSET MANAGEMENT AMERICAS (LLC) reported $3,756,404,328 across 236 holdings for the quarter ended 2025-12-31, in a 13F-HR filed 2026-02-13. Its ten largest share positions make up 70.51% of the portfolio.
Filed (acceptance time not in the bulk data set), ingested 13F-HR 0001132716-26-000004
- Period
- 2025-12-31
- Reported value
- $3.76B
- Holdings
- 236
- Top 10 weight
- 70.51%
- New
- 80
- Sold out
- 118
Largest buys vs the previous quarter
| Security | Shares change | Approx. value |
|---|---|---|
| CMAnew | +3,311,960 | $288M |
| DAYnew | +4,096,708 | $283M |
| RNAMnew | +3,716,597 | $268M |
| HOLXnew | +2,605,031 | $194M |
| EXASnew | +1,779,212 | $181M |
Ranked by the share change valued at this quarter's implied price (value over shares in the 13F). A position sold out is valued at the previous quarter's price, its last report.
Largest sells vs the previous quarter
| Security | Shares change | Approx. value |
|---|---|---|
| VERONA PHARMA PLCexited | -4,283,462 | -$457M |
| Kexited | -3,533,015 | -$290M |
| MR COOPER GROUP INCexited | -799,969 | -$169M |
| INTERPUBLIC GROUP COSexited | -4,730,494 | -$132M |
| INFORMATICA INCexited | -4,561,561 | -$113M |
Ranked by the share change valued at this quarter's implied price (value over shares in the 13F). A position sold out is valued at the previous quarter's price, its last report.
Back to all 194 share positions
Options
Puts and calls, as filed. The amount and value describe the underlying shares, not the option premium, so they stay out of % of portfolio (H5).
| Security | Type | Amount | Value | Change |
|---|---|---|---|---|
| LCIDLUCID GROUP INC Stock | put | 2,777,800 | $4.14M | -387,300 |
| HTZHERTZ GLOBAL HLDGS INC COM NEW | put | 1,194,300 | $752K | 0 |
| SABRSABRE CORP Stock | put | 688,600 | $706K | 0 |
| CCCHEMOURS CO Stock | put | 46,900 | $619K | 0 |
| HOGHARLEY DAVIDSON INC Stock | put | 250,000 | $550K | -125,000 |
| AALAMERICAN AIRLINES GROUP INC Stock | put | 5,460,000 | $534K | -3,850,000 |
| CHTRCHARTER COMMUNICATIONS INC COM | put | 21,100 | $510K | +600 |
| RIGTRANSOCEAN LTD Stock | call | 400,000 | $460K | 0 |
| FFORD MTR CO Stock | put | 900,000 | $448K | 0 |
| CROXCROCS INC Stock | put | 81,000 | $425K | 0 |
| RIGTRANSOCEAN LTD Stock | put | 483,400 | $188K | 0 |
| MGMMGM RESORTS INTERNATIONAL COM | put | 82,600 | $181K | 0 |
| CMCSACOMCAST CORP NEW COM | call | 100,000 | $172K | new |
| XIFRXPLR INFRASTRUCTURE LP COM UNIT PART IN | put | 20,600 | $164K | 0 |
| BGSB & G FOODS INC COM | put | 113,600 | $79.5K | 0 |
| CLMTCALUMET INC COM | put | 175,000 | $50.5K | 0 |
| HLFHERBALIFE LTD COM SHS | put | 82,400 | $33K | 0 |
| STWDSTARWOOD PPTY TR INC REIT | put | 172,500 | $30.2K | 0 |
| WTWISDOMTREE INC COM | put | 100,000 | $30K | new |
| FEFIRSTENERGY CORP COM | put | 26,000 | $26K | 0 |
| VNOVORNADO RLTY TR SH BEN INT | put | 33,500 | $25.1K | 0 |
| CAKECHEESECAKE FACTORY INC COM | put | 20,000 | $21K | +2,500 |
| MMACYS INC Stock | put | 80,000 | $18.8K | 0 |
| PTONPELOTON INTERACTIVE INC CL A COM | put | 400,000 | $14K | 0 |
| IWMISHARES TR SHS | put | 45,000 | $10.8K | new |
| SYFSYNCHRONY FINANCIAL STOK | put | 21,900 | $9.31K | 0 |
| EXEEXPAND ENERGY CORPORATION Stock | call | 20,000 | $8.4K | new |
| AVGOBROADCOM INC COM | call | 40,000 | $6.2K | new |
| LVSLAS VEGAS SANDS CORP Stock | put | 37,200 | $5.93K | 0 |
| NCLHNORWEGIAN CRUISE LINE HLDGS Stock | put | 188,800 | $5.66K | 0 |
| OMFONEMAIN HLDGS INC Stock | put | 34,400 | $5.64K | 0 |
| VSATVIASAT INC COM | put | 73,300 | $3.67K | 0 |
| DOCNDIGITALOCEAN HLDGS INC Stock | put | 15,000 | $3K | new |
| MPTMEDICAL PROPERTIES TRUST INC REIT | put | 396,500 | $1.98K | 0 |
| AAPADVANCE AUTO PARTS INC COM | put | 12,000 | $1.26K | 0 |
| MGNIMAGNITE INC Stock | call | 32,000 | $800 | -200,000 |
Principal amounts
Notes and convertibles filed as a face amount (PRN). A face amount is never added to a share count (H6).
| Security | Type | Amount | Value | Change |
|---|---|---|---|---|
| EXACT SCIENCES CORPEXACT SCIENCES CORP NOTE 0.375% 3/1 | principal | 90,000,000 | $93.7M | new |
| PELOTON INTERACTIVE INCPELOTON INTERACTIVE INC NOTE 2/1 | principal | 27,352,000 | $27.1M | 0 |
| SNOWFLAKE INCSNOWFLAKE INC NOTE 10/0 | principal | 12,300,000 | $19M | +9,800,000 |
| DRAFTKINGS INC NEWDRAFTKINGS INC NEW CNV | principal | 20,000,000 | $18.3M | -2,000,000 |
| FIRSTENERGY CORPFIRSTENERGY CORP NOTE 4.000% 5/0 | principal | 10,000,000 | $10.2M | 0 |
| SOUTHERN COSOUTHERN CO NOTE 4.500% 6/1 | principal | 7,500,000 | $8.01M | -10,000,000 |
Sold out in Q4 2025
Positions in the previous quarter's report that this quarter's report no longer lists.
| Security | Shares before | Value before | Type |
|---|---|---|---|
| VERONA PHARMA PLCVERONA PHARMA PLC | 4,283,462 | $457M | shares |
| KKELLANOVA | 3,533,015 | $290M | shares |
| MR COOPER GROUP INCMR COOPER GROUP INC | 799,969 | $169M | shares |
| INTERPUBLIC GROUP COSINTERPUBLIC GROUP COS | 4,730,494 | $132M | shares |
| INFORMATICA INCINFORMATICA INC | 4,561,561 | $113M | shares |
| SPRSPIRIT AEROSYSTEMS HLDGS INC | 2,753,215 | $106M | shares |
| MERUS N VMERUS N V | 654,126 | $61.6M | shares |
| ELMEELME COMMUNITIES | 1,870,603 | $31.5M | shares |
| SNOWFLAKE INCSNOWFLAKE INC | 20,000,000 | $30.4M | principal |
| EAELECTRONIC ARTS INC | 150,000 | $30.3M | shares |
| HALOZYME THERAPEUTICS INCHALOZYME THERAPEUTICS INC | 18,000,000 | $20.7M | principal |
| SAPIENS INTERNATIONAL CORPSAPIENS INTERNATIONAL CORP | 450,172 | $19.4M | shares |
| SOSOUTHERN CO | 201,920 | $19.1M | shares |
| DUKE ENERGY CORP NEWDUKE ENERGY CORP NEW | 15,000,000 | $16.1M | principal |
| AMERICAN WTR CAP CORPAMERICAN WTR CAP CORP | 16,000,000 | $16M | principal |
| SPOTIFY USA INCSPOTIFY USA INC | 10,000,000 | $13.7M | principal |
| WCNWASTE CONNECTIONS INC | 64,100 | $11.3M | shares |
| ITUBITAU UNIBANCO HLDG S A | 1,494,716 | $11M | shares |
| EMBJEMBRAER S.A. | 172,120 | $10.4M | shares |
| HALOZYME THERAPEUTICS INCHALOZYME THERAPEUTICS INC | 7,000,000 | $9.87M | principal |
| OXYOCCIDENTAL PETE CORP | 206,784 | $9.77M | shares |
| KSPIKASPI KZ JSC | 113,903 | $9.3M | shares |
| CLHCLEAN HARBORS INC | 39,450 | $9.16M | shares |
| NVTNVENT ELEC PLC | 92,500 | $9.12M | shares |
| APDAIR PRODUCTS AND CHEMICALS I | 31,535 | $8.6M | shares |
| NRGNRG ENERGY INC | 48,955 | $7.93M | shares |
| VSTVISTRA CORP | 40,280 | $7.89M | shares |
| PNRPENTAIR PLC | 67,987 | $7.53M | shares |
| PONYPONY AI INC | 311,224 | $7M | shares |
| COINCOINBASE GLOBAL INC | 19,000 | $6.41M | shares |
| HUBGHUB GROUP INC | 172,000 | $5.92M | shares |
| VMCVULCAN MATLS CO | 18,950 | $5.83M | shares |
| PAGSPAGSEGURO DIGITAL LTD | 582,357 | $5.82M | shares |
| MLMMARTIN MARIETTA MATLS INC | 9,100 | $5.74M | shares |
| INTRINTER & CO INC | 589,643 | $5.44M | shares |
| GTESGATES INDL CORP PLC | 210,790 | $5.23M | shares |
| WYNNWYNN RESORTS LTD | 40,000 | $5.13M | shares |
| PWRQUANTA SVCS INC | 12,000 | $4.97M | shares |
| MRLNMERLIN INC | 450,000 | $4.68M | shares |
| ANETARISTA NETWORKS INC | 30,000 | $4.37M | shares |
| MTZMASTEC INC | 19,080 | $4.06M | shares |
| FMXFOMENTO ECONOMICO MEXICANO S | 40,075 | $3.95M | shares |
| RALRALLIANT CORP | 87,000 | $3.8M | shares |
| BEYOND MEAT INCBEYOND MEAT INC | 19,000,000 | $3.8M | principal |
| LINLINDE PLC | 7,900 | $3.75M | shares |
| BAPCREDICORP LTD | 14,076 | $3.75M | shares |
| HUBBHUBBELL INC | 8,660 | $3.73M | shares |
| ARCOARCOS DORADOS HLDGS INC | 536,643 | $3.62M | shares |
| FLRFLUOR CORP | 83,890 | $3.53M | shares |
| BSACBANCO SANTANDER CHILE NEW | 119,793 | $3.17M | shares |
| ZEEKR INTELLIGENT TECHNOLOGYZEEKR INTELLIGENT TECHNOLOGY | 104,037 | $3.17M | shares |
| VISTVISTA ENERGY S.A.B. DE C.V. | 89,299 | $3.07M | shares |
| BBARBANCO BBVA ARGENTINA S A | 368,434 | $3.07M | shares |
| TVATEXAS VENTURES ACQUISITION I | 275,466 | $2.95M | shares |
| GLOBGLOBANT S A | 50,726 | $2.91M | shares |
| ULTAULTA BEAUTY INC | 5,000 | $2.73M | shares |
| SRADSPORTRADAR GROUP AG | 100,000 | $2.69M | shares |
| CRCCALIFORNIA RES CORP | 49,400 | $2.63M | shares |
| NABORS ENERGY TRANSITION CORNABORS ENERGY TRANSITION COR | 233,912 | $2.62M | shares |
| CHACCRANE HARBOR ACQU CORP - A | 250,000 | $2.53M | shares |
| NIONIO INC | 301,200 | $2.3M | shares |
| VCICVINE HILL CAP INVT CORP. | 200,000 | $2.14M | shares |
| VALEVALE S A | 195,578 | $2.12M | shares |
| ADTADT INC DEL | 229,607 | $2M | shares |
| DHID R HORTON INC | 11,720 | $1.99M | shares |
| FCXFREEPORT MCMORAN INC | 50,000 | $1.96M | shares |
| VISNVISTANCE NETWORKS INC | 125,000 | $1.94M | shares |
| SIGSIGNET JEWELERS LTD | 20,000 | $1.92M | shares |
| PCARPACCAR INC | 19,000 | $1.87M | shares |
| IPINTERNATIONAL PAPER CO | 39,970 | $1.85M | shares |
| LEVILEVI STRAUSS & CO NEW | 75,000 | $1.75M | shares |
| ZTOZTO EXPRESS CAYMAN INC | 85,872 | $1.65M | shares |
| TASKTASKUS INC | 91,181 | $1.63M | shares |
| HDHOME DEPOT INC | 4,000 | $1.62M | shares |
| CCOCLEAR CHANNEL OUTDOOR HLDGS | 1,000,000 | $1.58M | shares |
| NKENIKE INC | 20,000 | $1.39M | shares |
| ASAMER SPORTS INC | 40,000 | $1.39M | shares |
| GPRKGEOPARK LTD | 214,222 | $1.36M | shares |
| VRTVERTIV HOLDINGS CO | 75,000 | $1.36M | call |
| SOCSABLE OFFSHORE CORP | 74,000 | $1.29M | shares |
| BILIBILIBILI INC | 43,230 | $1.21M | shares |
| FIVEFIVE BELOW INC | 7,500 | $1.16M | shares |
| DLODLOCAL LTD | 78,152 | $1.12M | shares |
| VNETVNET GROUP INC | 107,300 | $1.11M | shares |
| PMTRPERIMETER ACQUISITION CORP I | 100,000 | $1.02M | shares |
| HSAIHESAI GROUP | 34,900 | $981K | shares |
| PGYPAGAYA TECHNOLOGIES LTD | 31,556 | $937K | shares |
| YETIYETI HLDGS INC | 25,000 | $830K | shares |
| CEPTCANTOR EQUITY PARTNERS II IN | 50,000 | $528K | shares |
| SPYSTATE STR SPDR S&P 500 ETF T | 96,000 | $346K | put |
| QQQINVESCO QQQ TR | 68,500 | $240K | put |
| CROXCROCS INC | 125,000 | $231K | call |
| TLTISHARES TR | 50,000 | $122K | call |
| SVCSERVICE PPTYS TR | 600,000 | $105K | call |
| COLUMBUS CIRCLE CAP CORP. ICOLUMBUS CIRCLE CAP CORP. I | 89,434 | $103K | shares |
| XOPSPDR SERIES TRUST | 37,000 | $101K | call |
| EMSMART SH GLOBAL LTD | 74,100 | $100K | shares |
| NKENIKE INC | 29,500 | $82.3K | call |
| NHICWNEWHOLD INVT CORP III | 187,499 | $60.7K | shares |
| TVACWTEXAS VENTURES ACQUISITION I | 50,000 | $56.2K | shares |
| LYVLIVE NATION ENTERTAINMENT IN | 32,500 | $51.6K | put |
| MATMATTEL INC | 355,000 | $44.4K | call |
| CGCTWCARTESIAN GROWTH CORP III | 165,500 | $44.3K | shares |
| TVAIRTHAYER VENTURES ACQ CORP II | 250,000 | $43.8K | shares |
| BBARRICK MNG CORP | 143,000 | $40.8K | call |
| TPHTRI POINTE HOMES INC | 23,600 | $31.3K | put |
| SMHVANECK ETF TRUST | 10,300 | $30.5K | put |
| SPEGRSILVER PEGASUS ACQUISITION C | 120,000 | $27.6K | shares |
| AXINRAXIOM INTELLIGENCE AC CORP 1 | 175,000 | $27.6K | shares |
| GDXVANECK ETF TRUST | 13,500 | $26.6K | call |
| PAII/WSPYROPHYTE ACQUISITION CORP. | 75,000 | $26.2K | shares |
| RIOTRIOT PLATFORMS INC | 29,200 | $23.5K | call |
| ONCHW1RT ACQUISITION CORP. | 24,800 | $22.7K | shares |
| OBAWWOXLEY BRIDGE ACQ LTD | 125,000 | $22.6K | shares |
| ANETARISTA NETWORKS INC | 23,500 | $20K | call |
| ETENERGY TRANSFER L P | 600,000 | $9K | call |
| SKTTANGER INC | 13,500 | $7.76K | put |
| RDZNWROADZEN INC | 65,696 | $4.21K | shares |
How Q4 2025 was built
Available 13F filings of this filer for the quarter and their roles: the base report is the latest original or restatement, NEW HOLDINGS amendments filed after it are added (method).
| Filing | Role | Amendment | Filed | Accepted | Ingested |
|---|---|---|---|---|---|
| 13F-HR 0001132716-26-000004 | base | 2026-02-13 | acceptance time not in the bulk data set | ||
| 13F-HR/A 0001132716-26-000009 | added | new holdings | 2026-03-04 | acceptance time not in the bulk data set | |
| 13F-HR/A 0001132716-26-000011 | added | new holdings | 2026-05-15 | acceptance time not in the bulk data set | |
| 13F-HR/A 0001132716-26-000017 | added | new holdings | 2026-08-14 | acceptance time not in the bulk data set |