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  • OCONNOR, A DISTINCT BUSINESS UNIT OF UBS ASSET MANAGEMENT AMERICAS (LLC) (Data extracted from 13F, 13D, 13G and Form 4)

OCONNOR, A DISTINCT BUSINESS UNIT OF UBS ASSET MANAGEMENT AMERICAS (LLC)

AUM: $0.35 M
13-F Portfolio Value: $927.54 M
Last 13-F Filed: Q3 2025
Concentration in top 10: 38.06%
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Stock Company % Portfolio Shares Held Market Value Change in Shares % Change Quarter End Price Source
ABBVABBVIE INC-13,297Exited13F
ACADACADIA PHA-43,000Exited13F
ACELACCEL ENTE-246,728Exited13F
ADPTADAPTIVE B-73,441Exited13F
AAPADVANCE AU (Put)-12,000Exited13F
AMDADVANCED M-54,921Exited13F
AGIOAGIOS PHAR-56,810Exited13F
AKAMAKAMAI TEC (PRN)-9,500,000Exited13F
ALGNALIGN TECH-12,755Exited13F
ATECALPHATEC H-119,094Exited13F
AMZNAMAZON COM-43,190Exited13F
AMEDAMEDISYS I-474,162Exited13F
AMEAMETEK INC-6,085Exited13F
ANABANAPTYSBIO-38,528Exited13F
ANNXANNEXON IN-492,698Exited13F
ANSSANSYS INC-492,829Exited13F
AAPLAPPLE INC (Call)-74,000Exited13F
AMATAPPLIED MA-30,000Exited13F
RCUSARCUS BIOS-52,975Exited13F
ARGXARGENX SE-2,191Exited13F
ARVNARVINAS IN-50,000Exited13F
AZNASTRAZENEC-42,998Exited13F
AUTLAUTOLUS TH-565,000Exited13F
AXGNAXOGEN INC-81,429Exited13F
AXGNAXOGEN INC (Call)-50,000Exited13F
AXSMAXSOME THE-6,400Exited13F
BKRBAKER HUGH-80,000Exited13F
BAXBAXTER INT-88,787Exited13F
BDXBECTON DIC-15,107Exited13F
ONCBEONE MEDI-9,377Exited13F
BCYCBICYCLE TH-143,800Exited13F
BCYCBICYCLE TH (Call)-50,000Exited13F
BIIBBIOGEN INC (Call)-20,000Exited13F
BPMCBLUEPRINT-1,713,587Exited13F
BABOEING CO-27,675Exited13F
BSLKWBOLT PROJS-110,914Exited13F
BRLSWBOREALIS F-70,030Exited13F
BBIOBRIDGEBIO-13,771Exited13F
BMYBRISTOL-MY (Call)-40,000Exited13F
BTIBRITISH AM-82,631Exited13F
CDNSCADENCE DE-26,400Exited13F
CAPRCAPRICOR T-17,054Exited13F
CAPRCAPRICOR T (Put)-33,000Exited13F
XAGEWLONGEVITY-371,250Exited13F
CATCATERPILLA-4,200Exited13F
CXCEMEX SAB-299,870Exited13F
CGONCG ONCOLOG-26,000Exited13F
CHXCHAMPIONX-7,546,703Exited13F
COMMCOMMSCOPE (Call)-550,000Exited13F
CYHCOMMUNITY-1,500,000Exited13F
CFLTCONFLUENT-300,000Exited13F
COOCOOPER COS-37,214Exited13F
COOCOOPER COS (Put)-20,000Exited13F
CRWVCOREWEAVE (Put)-100,000Exited13F
COSTCOSTCO WHS-1,000Exited13F
CRNXCRINETICS-39,978Exited13F
CCKCROWN HLDG-87,300Exited13F
DAWNDAY ONE BI-107,249Exited13F
DXCMDEXCOM INC-35,668Exited13F
IRONDISC MEDIC-12,317Exited13F
DLTRDOLLAR TRE-38,000Exited13F
DASHDOORDASH I-5,000Exited13F
DOVDOVER CORP-61,100Exited13F
DKNGDRAFTKINGS (Put)-15,000Exited13F
DUKDUKE ENERG-144,040Exited13F
DNBDUN & BRAD-13,678,842Exited13F
ECVTECOVYST IN-450,000Exited13F
EWTXEDGEWISE T-55,292Exited13F
NVNOENVVENO ME-241,161Exited13F
ESABESAB CORPO-8,900Exited13F
EVLVWEVOLV TECH-463,341Exited13F
FSLRFIRST SOLA (Call)-15,000Exited13F
FLFOOT LOCKE-720,109Exited13F
FBINFORTUNE BR-167,475Exited13F
YMMFULL TRUCK-186,090Exited13F
GMSGMS INC-200,000Exited13F
GEVGE VERNOVA-1,680Exited13F
GMABGENMAB A/S-158,719Exited13F
GILDGILEAD SCI (Put)-18,000Exited13F
HESHESS CORP-1,055,429Exited13F
HLTHILTON WOR-5,000Exited13F
HONHONEYWELL-22,636Exited13F
IRTCIRHYTHM TE-7,993Exited13F
IDYAIDEAYA BIO-51,600Exited13F
IMCRIMMUNOCORE-53,343Exited13F
IMUXIMMUNIC IN-30,000Exited13F
INCYINCYTE COR-28,924Exited13F
INCYINCYTE COR (Call)-35,000Exited13F
IRINGERSOLL-116,100Exited13F
INSMINSMED INC-26,301Exited13F
INSMINSMED INC (Put)-27,000Exited13F
INSPINSPIRE ME-9,522Exited13F
INSPINSPIRE ME (Put)-10,000Exited13F
ITGRINTEGER HL-21,375Exited13F
IONSIONIS PHAR-81,251Exited13F
IQVIQVIA HLDG-10,275Exited13F
IRMIRON MTN I (Put)-25,000Exited13F
TLTISHARES TR (Put)-600,000Exited13F
IWMISHARES TR-25,000Exited13F
IWMISHARES TR (Call)-105,000Exited13F
HYGISHARES TR (Put)-500,000Exited13F
JBLUJETBLUE AW (Call)-400,000Exited13F
JNPRJUNIPER NE-3,000,000Exited13F
BEKEKE HLDGS I-51,814Exited13F
KALAKALA BIO I-138,556Exited13F
KALVKALVISTA P-79,460Exited13F
KROSKEROS THER-37,891Exited13F
VTLEVITAL ENER (Call)-70,000Exited13F
LRMRLARIMAR TH-307,198Exited13F
ELLAUDER EST-40,000Exited13F
LXLEXINFINTE-1,149,107Exited13F
LCIDLUCID GROU (Put)-2,965,100Exited13F
MRVLMARVELL TE-24,688Exited13F
MRVLMARVELL TE (Call)-75,000Exited13F
MEOHMETHANEX C-76,000Exited13F
MSFTMICROSOFT-4,449Exited13F
MUMICRON TEC-20,000Exited13F
MLYSMINERALYS-79,723Exited13F
MIRMMIRUM PHAR-21,409Exited13F
MBLYMOBILEYE G-30,000Exited13F
MRNAMODERNA IN (Call)-35,000Exited13F
MSMORGAN STA-50,000Exited13F
NGNENEUROGENE-34,761Exited13F
NSCNORFOLK SO-24,088Exited13F
NOCNORTHROP G-7,500Exited13F
NVONOVO-NORDI (Call)-20,000Exited13F
ODFLOLD DOMINI-23,320Exited13F
PVLAPALVELLA T-43,994Exited13F
PHPARKER-HAN-4,020Exited13F
RIGLRIGEL PHAR-104,890Exited13F
SHWSHERWIN WI-15,800Exited13F
SKXSKECHERS U-3,598,177Exited13F
SLNOSOLENO THE-10,362Exited13F
SLNOSOLENO THE (Call)-10,000Exited13F
SLNOSOLENO THE (Put)-12,000Exited13F
TECKTECK RESOU-90,000Exited13F
TERNTERNS PHAR-273,619Exited13F
TEVATEVA PHARM-223,596Exited13F
TMOTHERMO FIS-3,770Exited13F
UALUNITED AIR (Put)-87,500Exited13F
UPSUNITED PAR-75,180Exited13F
VFCV F CORP-100,000Exited13F
PTGXPROTAGONIS-14,523Exited13F
EWEDWARDS LI-14,510Exited13F
NVSNOVARTIS A (Call)-15,000Exited13F
NVDANVIDIA COR (Put)-20,000Exited13F
NUVBNUVATION B-282,464Exited13F
OCULOCULAR THE-210,205Exited13F
OCULOCULAR THE (Call)-120,000Exited13F
OCFTONECONNECT-18,106Exited13F
ORICORIC PHARM-49,000Exited13F
KIDSORTHOPEDIA-65,866Exited13F
OFIXORTHOFIX M-67,518Exited13F
PTCTPTC THERAP-14,548Exited13F
PRAXPRAXIS PRE-21,892Exited13F
PRCTPROCEPT BI-25,226Exited13F
RLAYRELAY THER-127,036Exited13F
REPLREPLIMUNE-114,082Exited13F
REPLREPLIMUNE (Call)-169,000Exited13F
RZLTREZOLUTE I-455,701Exited13F
GLDSPDR GOLD (Call)-31,500Exited13F
XBISPDR SERIE (Call)-70,000Exited13F
XBISPDR SERIE (Put)-105,000Exited13F
SRRKSCHOLAR RO-25,426Exited13F
SDGRSCHRODINGE-24,358Exited13F
SESEA LTD-6,800Exited13F
XLVSELECT SEC (Put)-70,000Exited13F
TTANSERVICETIT-50,000Exited13F
FOURSHIFT4 PMT-46,775Exited13F
FOURSHIFT4 PMT (Call)-35,000Exited13F
SKILSKILLSOFT-41,692Exited13F
FLYYSPIRIT AVI-1,156,492Exited13F
SWTXSPRINGWORK-1,385,517Exited13F
SNDXSYNDAX PHA-90,441Exited13F
OPTXWSYNTEC OPT-32,034Exited13F
TARSTARSUS PHA-11,000Exited13F
TMETENCENT MU-55,000Exited13F
TSLATESLA INC (Put)-12,500Exited13F
TGTXTG THERAPE-19,000Exited13F
TMCITREACE MED-100,317Exited13F
RAREULTRAGENYX-31,861Exited13F
RAREULTRAGENYX (Call)-60,000Exited13F
USOUNITED STS (Put)-72,000Exited13F
UWMCUWM HOLDIN-143,000Exited13F
VTYXVENTYX BIO-79,000Exited13F
VSTMVERASTEM I-255,253Exited13F
VERAVERA THERA-27,400Exited13F
VERAVERA THERA (Call)-40,000Exited13F
VRDNVIRIDIAN T-131,294Exited13F
WABWABTEC-25,030Exited13F
WMTWALMART IN-15,000Exited13F
WBAWALGREENS-25,115,686Exited13F
XYFX FINL-205,614Exited13F
XFORX4 PHARMAC-80,000Exited13F
ANSCAGRICULTUR-334,160Exited13F
ALDFALDEL FINL-100,000Exited13F
ALKSALKERMES P (Put)-25,000Exited13F
ALCYALCHEMY IN-100,248Exited13F
ATIIARCHIMEDES-200,000Exited13F
AACBARTIUS II-160,000Exited13F
AACIARMADA ACQ-200,000Exited13F
BACQBLEICHROED-450,000Exited13F
BACQRBLEICHROED-250,000Exited13F
BORRBORR DRILL (Call)-200,000Exited13F
CRAQCAL REDWOO-200,000Exited13F
CEPTCANTOR EQU-50,000Exited13F
CAEPCANTOR EQU-200,000Exited13F
CGCTCARTESIAN-331,000Exited13F
BEAGBOLD EAGLE-400,000Exited13F
BEAGRBOLD EAGLE-400,000Exited13F
CCIXCHURCHILL-250,000Exited13F
CCCMCOLUMBUS C-200,000Exited13F
COPLCOPLEY ACQ-100,000Exited13F
CHACCRANE HBR-250,000Exited13F
POLEANDRETTI A-150,000Exited13F
FAASWDIGIASIA C-135,667Exited13F
IPODDUNE ACQUI-250,000Exited13F
EGHAEGH ACQUIS-250,000Exited13F
ESGRENSTAR GRO-117,537Exited13F
EQVEQV VENTUR-242,175Exited13F
GTENGORES HLDG-500,000Exited13F
GPATGP-ACT III-250,000Exited13F
HYACHAYMAKER A-100,248Exited13F
JACSJACKSON AC-100,000Exited13F
KNSAKINIKSA PH-37,602Exited13F
LEGTLEGATO MER-193,740Exited13F
LOKVLIVE OAK A-174,923Exited13F
MLACMOUNTAIN L-250,000Exited13F
NETDNABORS ENE-233,912Exited13F
NPACNEW PROVID-100,000Exited13F
NHICNEWHOLD IN-225,000Exited13F
OACCOAKTREE AC-200,000Exited13F
OYSEUOYSTER ENT-100,000Exited13F
PELIPELICAN AC-100,000Exited13F
PMTRPERIMETER-100,000Exited13F
RAAQREAL ASSET-89,645Exited13F
DRDBROMAN DBDR-100,000Exited13F
SBXDSILVERBOX-50,000Exited13F
SZZLSIZZLE ACQ-100,000Exited13F
SOULSOULPOWER-150,000Exited13F
SPKLSPARK I AC-66,832Exited13F
SVCCSTELLAR V-250,000Exited13F
TVATEXAS VENT-400,000Exited13F
VCICVINE HILL-250,000Exited13F
ALCALCON AG-25,555Exited13F
CRSPCRISPR THE (Call)-10,000Exited13F
ASMLASML HOLDI-3,000Exited13F
IFRXINFLARX NV-150,000Exited13F
MRUSMERUS N V-16,704Exited13F
QUREUNIQURE NV-63,475Exited13F