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OCONNOR, A Distinct Business Unit of UBS ASSET MANAGEMENT AMERICAS (LLC)

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13F filer, CIK 1132716, CHICAGO, IL

OCONNOR, A Distinct Business Unit of UBS ASSET MANAGEMENT AMERICAS (LLC) reported $3,340,984,621 across 274 holdings for the quarter ended 2025-09-30, in a 13F-HR/A filed 2026-01-15. Its ten largest share positions make up 68.59% of the portfolio.

Filed (acceptance time not in the bulk data set), ingested 13F-HR/A 0001132716-26-000002

Period
2025-09-30
Reported value
$3.34B
Holdings
274
Top 10 weight
68.59%
New
110
Sold out
203

Largest buys vs the previous quarter

SecurityShares changeApprox. value
CYBERARK SOFTWARE LTD/ISRAELnew+987,814$477M
VERONA PHARMA PLCnew+4,283,462$457M
GTLSnew+1,280,039$256M
INTERPUBLIC GROUP COSadded+3,730,494$104M
MR COOPER GROUP INCadded+364,969$76.9M

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

SecurityShares changeApprox. value
WALGREENS BOOTS ALLIANCE INCexited-25,115,686-$288M
SKXexited-3,598,177-$227M
BLUEPRINT MEDICINES CORPexited-1,713,587-$220M
CHAMPIONX CORPORATIONexited-7,546,703-$187M
ANSYS INCexited-492,829-$173M

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 214 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).

SecurityTypeAmountValueChange
LCIDLUCID GROUP INC Stockput3,165,100$2.27Mnew
AALAMERICAN AIRLINES GROUP INC Stockput9,310,000$2.11M-1,500,000
VRTVERTIV HOLDINGS CO Stockcall75,000$1.36Mnew
CHTRCHARTER COMMUNICATIONS INC COMput20,500$1.28M0
HTZHERTZ GLOBAL HLDGS INC COM NEWput1,194,300$830K0
CROXCROCS INC Stockput81,000$749Knew
FFORD MTR CO Stockput900,000$566K-24,900
MGNIMAGNITE INC Stockcall232,000$454K-200,000
HOGHARLEY DAVIDSON INC Stockput375,000$431K0
RIGTRANSOCEAN LTD Stockput483,400$422K-400,000
SABRSABRE CORP Stockput688,600$420K0
CCCHEMOURS CO Stockput46,900$396K0
MGMMGM RESORTS INTERNATIONAL COMput82,600$388K0
SPYSTATE STR SPDR S&P 500 ETF T SHSput96,000$346K-94,500
HLFHERBALIFE LTD COM SHSput82,400$346K0
QQQINVESCO QQQ TR COMput68,500$240K+48,500
CROXCROCS INC Stockcall125,000$231K0
RIGTRANSOCEAN LTD Stockcall400,000$190K0
XIFRXPLR INFRASTRUCTURE LP COM UNIT PART INput20,600$150K0
TLTISHARES TR 20 YR TR BD ETFcall50,000$122Knew
SVCSERVICE PPTYS TR COM SH BEN INTcall600,000$105Knew
MMACYS INC Stockput80,000$104Knew
BGSB & G FOODS INC COMput113,600$102K0
CLMTCALUMET INC COMput175,000$102K0
XOPSPDR SERIES TRUST S&P OILGAS EXPcall37,000$101Knew
NKENIKE INC COMcall29,500$82.3Knew
STWDSTARWOOD PPTY TR INC REITput172,500$60.4K0
LYVLIVE NATION ENTERTAINMENT IN Stockput32,500$51.6K0
VSATVIASAT INC COMput73,300$47.6K0
MATMATTEL INC COMcall355,000$44.4K0
BBARRICK MNG CORP COM SHScall143,000$40.8Knew
VNOVORNADO RLTY TR SH BEN INTput33,500$38.5K0
MPTMEDICAL PROPERTIES TRUST INC REITput396,500$37.7K0
LVSLAS VEGAS SANDS CORP Stockput37,200$34.9K0
TPHTRI POINTE HOMES INC COMput23,600$31.3K+5,600
SMHVANECK ETF TRUST COMput10,300$30.5Knew
CAKECHEESECAKE FACTORY INC COMput17,500$27.2K-7,000
GDXVANECK ETF TRUST GOLD MINERS ETFcall13,500$26.6Knew
OMFONEMAIN HLDGS INC Stockput34,400$25.3K0
PTONPELOTON INTERACTIVE INC CL A COMput400,000$24K0
RIOTRIOT PLATFORMS INC COMcall29,200$23.5Knew
NCLHNORWEGIAN CRUISE LINE HLDGS Stockput188,800$21.7K0
ANETARISTA NETWORKS INC COMcall23,500$20Knew
SYFSYNCHRONY FINANCIAL STOKput21,900$10.4K0
AAPADVANCE AUTO PARTS INC COMput12,000$9.84K0
ETENERGY TRANSFER L P COM UT LTD PTNcall600,000$9K+280,000
SKTTANGER INC COMput13,500$7.76Knew
FEFIRSTENERGY CORP COMput26,000$3.25K0

Principal amounts

Notes and convertibles filed as a face amount (PRN). A face amount is never added to a share count (H6).

SecurityTypeAmountValueChange
SNOWFLAKE INCSNOWFLAKE INC NOTE 10/0principal20,000,000$30.4Mnew
PELOTON INTERACTIVE INCPELOTON INTERACTIVE INC NOTE 2/1principal27,352,000$26.8M0
HALOZYME THERAPEUTICS INCHALOZYME THERAPEUTICS INC NOTE 0.250% 3/0principal18,000,000$20.7Mnew
DRAFTKINGS INC NEWDRAFTKINGS INC NEW CNVprincipal22,000,000$19.8M+5,000,000
SOUTHERN COSOUTHERN CO NOTE 4.500% 6/1principal17,500,000$19.5M0
DUKE ENERGY CORP NEWDUKE ENERGY CORP NEW CONV BNDprincipal15,000,000$16.1M0
AMERICAN WTR CAP CORPAMERICAN WTR CAP CORP NOTE 3.625% 6/1principal16,000,000$16M0
SPOTIFY USA INCSPOTIFY USA INC NOTE 3/1principal10,000,000$13.7M0
FIRSTENERGY CORPFIRSTENERGY CORP NOTE 4.000% 5/0principal10,000,000$10.4M0
HALOZYME THERAPEUTICS INCHALOZYME THERAPEUTICS INC NOTE 1.000% 8/1principal7,000,000$9.87M-15,500,000
SNOWFLAKE INCSNOWFLAKE INC NOTE 10/0principal2,500,000$3.92Mnew
BEYOND MEAT INCBEYOND MEAT INC NOTE 3/1principal19,000,000$3.8M-10,000,000

Sold out in Q3 2025

Positions in the previous quarter's report that this quarter's report no longer lists.

SecurityShares beforeValue beforeType
WALGREENS BOOTS ALLIANCE INCWALGREENS BOOTS ALLIANCE INC25,115,686$288Mshares
SKXSKECHERS U S A INC3,598,177$227Mshares
BLUEPRINT MEDICINES CORPBLUEPRINT MEDICINES CORP1,713,587$220Mshares
CHAMPIONX CORPORATIONCHAMPIONX CORPORATION7,546,703$187Mshares
ANSYS INCANSYS INC492,829$173Mshares
HESS CORPHESS CORP1,055,429$146Mshares
DUN & BRADSTREET HLDGS INCDUN & BRADSTREET HLDGS INC13,678,842$124Mshares
JUNIPER NETWORKS INCJUNIPER NETWORKS INC3,000,000$120Mshares
LBRDKLIBERTY BROADBAND CORP919,381$90.4Mshares
SPRINGWORKS THERAPEUTICS INCSPRINGWORKS THERAPEUTICS INC1,385,517$65.1Mshares
AMEDISYS INCAMEDISYS INC474,162$46.7Mshares
ENSTAR GROUP LIMITEDENSTAR GROUP LIMITED117,537$39.5Mshares
GMS INCGMS INC200,000$21.8Mshares
FOOT LOCKER INCFOOT LOCKER INC720,109$17.6Mshares
DUKDUKE ENERGY CORP NEW144,040$17Mshares
DOVDOVER CORP61,100$11.2Mshares
IRINGERSOLL RAND INC116,100$9.66Mshares
AMZNAMAZON COM INC43,190$9.48Mshares
AKAMAI TECHNOLOGIES INCAKAMAI TECHNOLOGIES INC9,500,000$9.23Mprincipal
CCKCROWN HLDGS INC87,300$8.99Mshares
FBINFORTUNE BRANDS INNOVATIONS I167,475$8.62Mshares
LXLEXINFINTECH HLDGS LTD1,149,107$8.29Mshares
CDNSCADENCE DESIGN SYSTEM INC26,400$8.14Mshares
AMDADVANCED MICRO DEVICES INC54,921$7.79Mshares
UPSUNITED PARCEL SVCS INC75,180$7.59Mshares
CFLTCONFLUENT INC-CLASS A300,000$7.48Mshares
MSMORGAN STANLEY50,000$7.04Mshares
NSCNORFOLK SOUTHN CORP24,088$6.17Mshares
BABOEING CO27,675$5.8Mshares
FLYYSPIRIT AVIATION HLDGS INC COM(1,156,492$5.77Mshares
AMATAPPLIED MATLS INC30,000$5.49Mshares
SHWSHERWIN WILLIAMS CO15,800$5.43Mshares
IWMISHARES TR25,000$5.39Mshares
TTANSERVICETITAN INC50,000$5.36Mshares
HONHONEYWELL INTL INC22,636$5.27Mshares
WABWABTEC25,030$5.24Mshares
CYHCOMMUNITY HEALTH SYS INC NEW1,500,000$5.1Mshares
FOURSHIFT4 PMTS INC46,775$4.64Mshares
BTIBRITISH AMERN TOB PLC82,631$3.91Mshares
ODFLOLD DOMINION FREIGHT LINE IN23,320$3.78Mshares
DLTRDOLLAR TREE INC38,000$3.76Mshares
NOCNORTHROP GRUMMAN CORP7,500$3.75Mshares
TEVATEVA PHARMACEUTICAL INDS LTD223,596$3.75Mshares
ECVTECOVYST INC450,000$3.7Mshares
TECKTECK RESOURCES LTD90,000$3.63Mshares
XYFX FINL205,614$3.59Mshares
GMABGENMAB A/S158,719$3.28Mshares
ELLAUDER ESTEE COS INC40,000$3.23Mshares
IONSIONIS PHARMACEUTICALS INC81,251$3.21Mshares
DXCMDEXCOM INC35,668$3.11Mshares
BKRBAKER HUGHES COMPANY80,000$3.07Mshares
AZNASTRAZENECA PLC-SPONS ADR42,998$3Mshares
PHPARKER-HANNIFIN CORP4,020$2.81Mshares
BAXBAXTER INTL INC88,787$2.69Mshares
LUCID GROUP INCLUCID GROUP INC2,965,100$2.65Mput
COOCOOPER COS INC37,214$2.65Mshares
INSMINSMED INC26,301$2.65Mshares
ITGRINTEGER HLDGS CORP21,375$2.63Mshares
BDXBECTON DICKINSON & CO15,107$2.6Mshares
MEOHMETHANEX CORP76,000$2.52Mshares
ABBVABBVIE INC13,297$2.47Mshares
MUMICRON TECHNOLOGY INC20,000$2.46Mshares
ALGNALIGN TECHNOLOGY INC12,755$2.41Mshares
ASMLASML HLDG NV3,000$2.4Mshares
ONCBEONE MEDICINES LTD9,377$2.27Mshares
ALCALCON AG25,555$2.26Mshares
MSFTMICROSOFT CORP4,449$2.21Mshares
YMMFULL TRUCK ALLIANCE CO LTD186,090$2.2Mshares
COLUMBUS CIRCLE CAP CORP. ICOLUMBUS CIRCLE CAP CORP. I200,000$2.12Mshares
CXCEMEX SAB DE CV299,870$2.08Mshares
RZLTREZOLUTE INC455,701$2.03Mshares
INCYINCYTE CORP28,924$1.97Mshares
RIGLRIGEL PHARMACEUTICALS INC104,890$1.96Mshares
OCULOCULAR THERAPEUTIX INC210,205$1.95Mshares
MRVLMARVELL TECHNOLOGY INC24,688$1.91Mshares
AGIOAGIOS PHARMACEUTICALS INC56,810$1.89Mshares
VRDNVIRIDIAN THERAPEUTICS INC131,294$1.84Mshares
IMCRIMMUNOCORE HLDGS PLC53,343$1.67Mshares
CATCATERPILLAR INC4,200$1.63Mshares
IQVIQVIA HLDGS INC10,275$1.62Mshares
TMOTHERMO FISHER SCIENTIFIC INC3,770$1.53Mshares
WMTWALMART INC15,000$1.47Mshares
PRCTPROCEPT BIOROBOTICS CORP25,226$1.45Mshares
KIDSORTHOPEDIATRICS CORP65,866$1.41Mshares
HLTHILTON WORLDWIDE HLDGS INC5,000$1.33Mshares
ATECALPHATEC HLDGS INC119,094$1.32Mshares
AUTLAUTOLUS THERAPEUTICS LTD565,000$1.29Mshares
INSPINSPIRE MED SYS INC9,522$1.24Mshares
DASHDOORDASH INC5,000$1.23Mshares
IRTCIRHYTHM HOLDINGS INC7,993$1.23Mshares
ARGXARGENX SE2,191$1.21Mshares
ANNXANNEXON INC492,698$1.18Mshares
VFCV F CORP100,000$1.18Mshares
RAREULTRAGENYX PHARMACEUTICAL IN31,861$1.16Mshares
CRNXCRINETICS PHARMACEUTICALS IN39,978$1.15Mshares
EWEDWARDS LIFESCIENCES CORP14,510$1.13Mshares
AMEAMETEK INC6,085$1.1Mshares
MIRMMIRUM PHARMACEUTICALS INC21,409$1.09Mshares
SESEA LTD6,800$1.09Mshares
IDYAIDEAYA BIOSCIENCES INC51,600$1.08Mshares
MLYSMINERALYS THERAPEUTICS INC79,723$1.08Mshares
ESABESAB CORPORATION8,900$1.07Mshares
TMETENCENT MUSIC ENTMT GROUP55,000$1.07Mshares
REPLREPLIMUNE GROUP INC114,082$1.06Mshares
VSTMVERASTEM INC255,253$1.06Mshares
KNSAKINIKSA PHARMACEUTICALS INTL37,602$1.04Mshares
TERNTERNS PHARMACEUTICALS INC273,619$1.02Mshares
OYSEUOYSTER ENTERPRISES II ACQUIS100,000$1.01Mshares
BCYCBICYCLE THERAPEUTICS PLC143,800$999Kshares
PVLAPALVELLA THERAPEUTICS INC NE43,994$992Kshares
COSTCOSTCO WHOLESALE CORPORATION1,000$990Kshares
ENVVENO MEDICAL CORPORATIONENVVENO MEDICAL CORPORATION241,161$962Kshares
ACADACADIA PHARMACEUTICALS INC43,000$928Kshares
PRAXPRAXIS PRECISION MEDICINES I21,892$921Kshares
BEKEKE HLDGS INC51,814$919Kshares
SRRKSCHOLAR ROCK HLDG CORP25,426$901Kshares
KALVKALVISTA PHARMACEUTICALS INC79,460$898Kshares
GEVGE VERNOVA INC1,680$889Kshares
LRMRLARIMAR THERAPEUTICS INC307,198$888Kshares
QUREUNIQURE NV63,475$885Kshares
AXGNAXOGEN INC81,429$884Kshares
SLNOSOLENO THERAPEUTICS INC10,362$868Kshares
ADPTADAPTIVE BIOTECHNOLOGIES COR73,441$856Kshares
ANABANAPTYSBIO INC38,528$855Kshares
SNDXSYNDAX PHARMACEUTICALS INC90,441$847Kshares
PTGXPROTAGONIST THERAPEUTICS INC14,523$803Kshares
OFIXORTHOFIX MED INC67,518$753Kshares
EWTXEDGEWISE THERAPEUTICS INC55,292$725Kshares
PTCTPTC THERAPEUTICS INC14,548$711Kshares
DAWNDAY ONE BIOPHARMACEUTICALS I107,249$697Kshares
TGTXTG THERAPEUTICS INC19,000$684Kshares
CGONCG ONCOLOGY INC26,000$676Kshares
AXSMAXSOME THERAPEUTICS INC.6,400$668Kshares
KALAKALA BIO INC138,556$660Kshares
IRONDISC MEDICINE INC12,317$652Kshares
VERAVERA THERAPEUTICS INC27,400$646Kshares
BBIOBRIDGEBIO PHARMA INC13,771$595Kshares
UWMCUWM HOLDINGS CORPORATION143,000$592Kshares
TMCITREACE MED CONCEPTS INC100,317$590Kshares
VISNVISTANCE NETWORKS INC550,000$578Kcall
NUVBNUVATION BIO INC282,464$551Kshares
MBLYMOBILEYE GLOBAL INC30,000$539Kshares
NGNENEUROGENE INC34,761$520Kshares
KROSKEROS THERAPEUTICS INC37,891$506Kshares
ORICORIC PHARMACEUTICALS INC49,000$497Kshares
SDGRSCHRODINGER INC24,358$490Kshares
TARSTARSUS PHARMACEUTICALS INC11,000$446Kshares
RLAYRELAY THERAPEUTICS INC127,036$440Kshares
RCUSARCUS BIOSCIENCES INC52,975$431Kshares
ARVNARVINAS INC50,000$368Kshares
FOURSHIFT4 PMTS INC35,000$354Kcall
MRVLMARVELL TECHNOLOGY INC75,000$341Kcall
REPLREPLIMUNE GROUP INC169,000$308Kcall
TSLATESLA INC12,500$289Kput
IWMISHARES TR105,000$288Kcall
AAPLAPPLE INC74,000$279Kcall
EVLVWEVOLV TECHNOLOGIES HLDNGS IN463,341$259Kshares
RAREULTRAGENYX PHARMACEUTICAL IN60,000$238Kcall
FSLRFIRST SOLAR INC15,000$189Kcall
HYGISHARES TR500,000$172Kput
CAPRCAPRICOR THERAPEUTICS INC17,054$169Kshares
VTYXVENTYX BIOSCIENCES INC79,000$169Kshares
UALUNITED AIRLS HLDGS INC87,500$165Kput
GLDSPDR GOLD TR31,500$154Kcall
OCULOCULAR THERAPEUTIX INC120,000$153Kcall
XFORX4 PHARMACEUTICALS INC80,000$152Kshares
XBISPDR SERIES TRUST105,000$149Kput
INSMINSMED INC27,000$138Kput
ONECONNECT FINL TECHNOLOGY CONECONNECT FINL TECHNOLOGY C18,106$130Kshares
QUREUNIQURE NV80,000$124Kcall
IFRXINFLARX NV150,000$118Kshares
TLTISHARES TR600,000$102Kput
INSPINSPIRE MED SYS INC10,000$85.5Kput
BACQRINFLECTION PT ACQUISITION CORP250,000$81Kshares
SLNOSOLENO THERAPEUTICS INC10,000$74.5Kcall
IRMIRON MTN INC DEL25,000$70Kput
XBISPDR SERIES TRUST70,000$67.2Kcall
ALKSALKERMES PLC25,000$58.1Kput
INCYINCYTE CORP35,000$49.8Kcall
CAPRCAPRICOR THERAPEUTICS INC33,000$43.7Kput
XLVSELECT SECTOR SPDR TR70,000$40.6Kput
SLNOSOLENO THERAPEUTICS INC12,000$40.2Kput
BIIBBIOGEN INC20,000$30Kcall
CRSPCRISPR THERAPEUTICS AG10,000$27.2Kcall
USOUNITED STS OIL FD LP72,000$25.6Kput
AXGNAXOGEN INC50,000$23.8Kcall
MRNAMODERNA INC35,000$23.4Kcall
VERAVERA THERAPEUTICS INC40,000$23Kcall
Vital Energy IncVital Energy Inc70,000$22.8Kcall
JBLUJETBLUE AIRWAYS CORP400,000$22Kcall
IMUXIMMUNIC INC30,000$20.9Kshares
NVSNOVARTIS AG15,000$13.5Kcall
LONGEVITY HEALTH HLDGS INCLONGEVITY HEALTH HLDGS INC371,250$11.3Kshares
BCYCBICYCLE THERAPEUTICS PLC50,000$11.2Kcall
CRWVCOREWEAVE INC100,000$10.2Kput
BMYBRISTOL-MYERS SQUIBB CO40,000$9Kcall
COOCOOPER COS INC20,000$8Kput
DIGIASISIA WARRANTSDIGIASISIA WARRANTS135,667$5.72Kshares
BORRBORR DRILLING LTD200,000$5Kcall
DKNGDRAFTKINGS INC NEW15,000$4.2Kput
NVDANVIDIA CORPORATION20,000$3.5Kput
NVONOVO-NORDISK A S20,000$3.4Kcall
GILDGILEAD SCIENCES INC18,000$360put

How Q3 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).

FilingRoleAmendmentFiledAcceptedIngested
13F-HR 0001132716-25-000032 superseded2025-11-14acceptance time not in the bulk data set
13F-HR/A 0001132716-26-000002 baserestatement2026-01-15acceptance time not in the bulk data set
13F-HR/A 0001132716-26-000005 addednew holdings2026-02-13acceptance time not in the bulk data set
13F-HR/A 0001132716-26-000012 addednew holdings2026-05-15acceptance time not in the bulk data set
13F-HR/A 0001132716-26-000016 addednew holdings2026-08-14acceptance time not in the bulk data set