UBS OCONNOR LLC

AUM: $14.94 B
13-F Portfolio Value: $1.39 B
Last 13-F Filed: Q4 2023
Concentration in top 10: 26.8%
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Stock Company % Portfolio Shares Held Market Value Change in Shares % Change Quarter End Price Source
UTHRUNITED THE0.08%5,043$1,108,905-7,482-59.74%$219.8913F
ALCYUALCHEMY IN0.08%103,486$1,085,568-46,514-31.01%$10.4913F
HYACHAYMAKER A0.08%103,486$1,062,801-46,514-31.01%$10.2713F
HOLIHOLLYSYS A0.08%40,000$1,054,000-53,570-57.25%$26.3513F
RIGTRANSOCEAN (Put)0.08%425,000$1,139,000No Change$2.6813F
AKTSAKOUSTIS T0.07%1,180,000$984,120980,000490%$0.8313F
RCUSARCUS BIOS0.07%53,246$1,016,999-46,166-46.44%$19.113F
AXGNAXOGEN INC0.07%137,575$939,637-101,621-42.48%$6.8313F
AXSMAXSOME THE0.07%11,922$948,872-13,813-53.67%$79.5913F
EXREXTRA SPAC0.07%6,325$1,014,087-78,576-92.55%$160.3313F
HALOHALOZYME T0.07%27,683$1,023,164-40,860-59.61%$36.9613F
HLVXHILLEVAX I0.07%61,059$979,997-53,419-46.66%$16.0513F
JDJD.COM INC0.07%32,500$938,92532,500New$28.8913F
PTCTPTC THERAP0.07%36,052$993,593-6,549-15.37%$27.5613F
RVNCREVANCE TH0.07%109,667$963,97320,86723.5%$8.7913F
NOWSERVICENOW0.07%1,414$998,977-6,086-81.15%$706.4913F
SYRSSYROS PHAR0.07%130,000$1,012,700130,000New$7.7913F
TEVATEVA PHARM0.07%90,017$939,777-94,983-51.34%$10.4413F
VRNAVERONA PHA0.07%48,533$964,836-39,095-44.61%$19.8813F
WHWYNDHAM HO0.07%11,428$918,925-160,443-93.35%$80.4113F
ADPTADAPTIVE B0.06%165,745$812,150-35,595-17.68%$4.913F
ADBEADOBE INC0.06%1,284$766,034No Change$596.613F
AURAAURA BIOSC0.06%90,000$797,40046,000104.55%$8.8613F
BDXBECTON DIC0.06%3,227$786,839-10,044-75.68%$243.8313F
BPMCBLUEPRINT0.06%9,000$830,160-39,984-81.63%$92.2413F
CRCCALIFORNIA0.06%15,119$826,707-1,529-9.18%$54.6813F
NETCLOUDFLARE0.06%10,000$832,600-35,000-77.78%$83.2613F
DXCMDEXCOM INC0.06%6,172$765,883-18,828-75.31%$124.0913F
ETNB89BIO INC0.06%79,075$883,268-19,763-20%$11.1713F
METAMETA PLATF0.06%2,500$884,900-5,000-66.67%$353.9613F
FRSHFRESHWORKS0.06%35,000$822,15035,000New$23.4913F
IMUXIMMUNIC IN0.06%600,234$900,351-161,453-21.2%$1.513F
IOVAIOVANCE BI0.06%104,059$846,000-137,915-57%$8.1313F
IOVAIOVANCE BI (Call)0.06%330,000$900,375100,00043.48%$2.7313F
LYVLIVE NATIO (Put)0.06%229,500$844,762192,000512%$3.6813F
PTONPELOTON IN (Put)0.06%1,037,500$898,875No Change$0.8713F
PRCTPROCEPT BI0.06%19,717$826,339-15,399-43.85%$41.9113F
REPLREPLIMUNE0.06%100,000$843,000100,000New$8.4313F
SVRASAVARA INC0.06%176,886$831,364-203,466-53.49%$4.713F
SILKSILK RD ME0.06%72,556$890,26226,02855.94%$12.2713F
SAVESPIRIT AIR (Put)0.06%300,000$885,000-150,000-33.33%$2.9513F
SUISUN CMNTYS0.06%6,379$852,553-40,122-86.28%$133.6513F
TRISTRISTAR AC0.06%80,656$869,875-36,254-31.01%$10.7913F
AMCAMC ENTMT0.05%109,769$671,786-4,652-4.07%$6.1213F
ABTABBOTT LAB0.05%5,769$634,994-43,231-88.23%$110.0713F
ABNBAIRBNB INC0.05%5,000$680,7005,000New$136.1413F
APLEAPPLE HOSP0.05%38,965$647,209-129,277-76.84%$16.6113F
CPTCAMDEN PPT0.05%7,023$697,314-18,909-72.92%$99.2913F
CNTBCONNECT BI0.05%561,191$662,205-42,709-7.07%$1.1813F
DNLIDENALI THE0.05%34,464$739,597-24,488-41.54%$21.4613F
DYNDYNE THERA0.05%57,330$762,489-53,422-48.24%$13.313F
FCPTFOUR CORNE0.05%28,844$729,753-14,416-33.32%$25.313F
KPTIKARYOPHARM0.05%802,327$694,013-74,383-8.48%$0.8713F
LBPHLONGBOARD0.05%123,206$742,932-139,059-53.02%$6.0313F
MTHMERITAGE H0.05%4,195$730,7694,195New$174.213F
NKTRNEKTAR THE0.05%1,250,742$706,669-125,507-9.12%$0.5613F
PSAPUBLIC STO0.05%2,225$678,625-15,420-87.39%$30513F
SKILSKILLSOFT0.05%41,681$732,75241,681New$17.5813F
THRDTHIRD HARM0.05%64,704$709,803-60,296-48.24%$10.9713F
TWOTWO HBRS I0.05%45,629$635,61245,629New$13.9313F
UDRUDR INC0.05%19,236$736,546-56,206-74.5%$38.2913F
VRDNVIRIDIAN T0.05%30,000$653,400-54,836-64.64%$21.7813F
XENEXENON PHAR0.05%14,676$675,977-34,000-69.85%$46.0613F
ZTOZTO EXPRES0.05%33,650$716,07211,16049.62%$21.2813F
CPRICAPRI HOLD0.05%13,900$698,337No Change$50.2413F
SPKLUSPARK I AC0.05%68,991$702,32868,991New$10.1813F
QUREUNIQURE NV0.05%95,000$643,1506,0356.78%$6.7713F
AGNCAGNC INVT0.04%55,841$547,8006,42213%$9.8113F
AIVAPARTMENT0.04%77,150$604,08477,150New$7.8313F
ATXSASTRIA THE0.04%78,120$599,962-45,880-37%$7.6813F
BBIOBRIDGEBIO0.04%14,318$578,018-42,982-75.01%$40.3713F
COTYCOTY INC (Put)0.04%1,418,000$498,380No Change$0.3513F
BHACFOCUS IMPA0.04%54,209$564,858-24,366-31.01%$10.4213F
CGEMCULLINAN O0.04%54,352$553,847-50,648-48.24%$10.1913F
IRONDISC MEDIC0.04%9,338$539,363-13,783-59.61%$57.7613F
EDITEDITAS MED0.04%50,000$506,500-32,369-39.3%$10.1313F
FRFIRST INDL0.04%11,166$588,113-206,323-94.87%$52.6713F
FFORD MTR C (Put)0.04%740,900$517,898No Change$0.713F
INTUINTUIT0.04%1,000$625,030-500-33.33%$625.0313F
KROSKEROS THER0.04%14,112$561,093-46,229-76.61%$39.7613F
LPTXLEAP THERA0.04%143,589$595,176-75,845-34.56%$4.1413F
OSIOSIRIS ACQ0.04%55,585$578,084-24,985-31.01%$10.413F
PRAXPRAXIS PRE0.04%22,278$496,35422,278New$22.2813F
RZLTREZOLUTE I0.04%601,259$597,05043,9527.89%$0.9913F
SAVESPIRIT AIR0.04%30,000$491,700-1,117,771-97.39%$16.3913F
UUNITY SOFT0.04%12,500$511,12512,500New$40.8913F
PCVXVAXCYTE IN0.04%8,030$504,284-1,970-19.7%$62.813F
VTRVENTAS INC0.04%10,400$518,33610,400New$49.8413F
VSTMVERASTEM I0.04%61,803$503,076-94,101-60.36%$8.1413F
VERUVERU INC0.04%700,000$504,000700,000New$0.7213F
WWAYFAIR IN0.04%10,000$617,000-4,000-28.57%$61.713F
WDAYWORKDAY IN0.04%2,000$552,120-14,000-87.5%$276.0613F
NXPINXP SEMICO0.04%2,500$574,2002,500New$229.6813F
PHVSPHARVARIS0.04%18,000$504,90018,000New$28.0513F
SLRNACELYRIN I0.03%60,000$447,60060,000New$7.4613F
ACRVACRIVON TH0.03%93,443$459,740-11,557-11.01%$4.9213F
ALTALTIMMUNE0.03%34,298$385,85234,298New$11.2513F
ATRCATRICURE I0.03%12,199$435,382-37,094-75.25%$35.6913F
AVBAVALONBAY0.03%2,435$455,8812,435New$187.2213F
BCRXBIOCRYST P0.03%60,159$360,352-181,661-75.12%$5.9913F
BNTXBIONTECH S0.03%4,363$460,4713639.08%$105.5413F
BCABBIOATLA IN0.03%180,423$443,841-262,299-59.25%$2.4613F
CRLCHARLES RI0.03%2,034$480,838-1,177-36.66%$236.413F
CRNXCRINETICS0.03%10,038$357,152-16,115-61.62%$35.5813F
CYTKCYTOKINETI (Call)0.03%10,000$387,00010,000New$38.713F
ESSESSEX PPTY0.03%1,900$471,0861005.56%$247.9413F
EVLVWEVOLV TECH0.03%478,241$379,628-214,959-31.01%$0.7913F
IQVIQVIA HLDG0.03%2,030$469,701-2,605-56.2%$231.3813F
KVUEKENVUE INC0.03%22,336$480,894-254,010-91.92%$21.5313F
LCIDLUCID GROU0.03%100,000$421,000100,000New$4.2113F
MARAMARATHON D0.03%16,749$393,43416,749New$23.4913F
NERVMINERVA NE0.03%64,644$397,561-5,356-7.65%$6.1513F
OVIDOVID THERA0.03%144,500$465,290-5,500-3.67%$3.2213F
PMVPPMV PHARMA0.03%126,000$390,600126,000New$3.113F
PHATPHATHOM PH0.03%43,209$394,498-74,071-63.16%$9.1313F
QTRXQUANTERIX0.03%16,794$459,148-12,406-42.49%$27.3413F
SCYXSCYNEXIS I0.03%189,467$422,511-176,552-48.24%$2.2313F
TSLATESLA INC0.03%1,500$372,720-1,000-40%$248.4813F
GDXVANECK ETF (Call)0.03%400,000$452,000-100,000-20%$1.1313F
VKTXVIKING THE0.03%22,141$412,044-35,764-61.76%$18.6113F
ZSZSCALER IN0.03%2,000$443,120-28,000-93.33%$221.5613F
ASANASANA INC0.02%15,000$285,150-70,000-82.35%$19.0113F
BCYCBICYCLE TH (Call)0.02%125,000$226,250101,500431.91%$1.8113F
BKDBROOKDALE0.02%38,166$222,12638,166New$5.8213F
CCLCARNIVAL C (Put)0.02%1,021,500$346,578106,50011.64%$0.3413F
CHGGCHEGG INC0.02%25,000$284,000No Change$11.3613F
CNTXCONTEXT TH0.02%296,675$335,2439750.33%$1.1313F
DCPHDECIPHERA (Call)0.02%120,000$290,00070,000140%$2.4213F
FAFFIRST AMER0.02%4,169$268,6504,169New$64.4413F
IMCRIMMUNOCORE (Call)0.02%25,000$340,00025,000New$13.613F
QQQINVESCO QQ (Put)0.02%90,000$252,01790,000New$2.813F
GLUEMONTE ROSA0.02%44,247$249,996-41,231-48.24%$5.6513F
PLTRPALANTIR T0.02%15,000$257,550-22,500-60%$17.1713F
SNDXSYNDAX PHA (Call)0.02%75,000$326,250-5,000-6.25%$4.3513F
XRXXEROX HOLD (Put)0.02%248,800$306,740No Change$1.2313F
ALKSALKERMES P0.02%8,794$243,9468,794New$27.7413F
SCRMWSCREAMING0.02%573,164$262,280573,164New$0.4613F
IFRXINFLARX NV0.02%201,880$329,064-188,120-48.24%$1.6313F
BGSB & G FOOD (Put)0.01%225,000$160,37510,0004.65%$0.7113F
HLNHALEON PLC0.01%21,500$176,945-52,685-71.02%$8.2313F
KRGKITE RLTY0.01%9,102$208,0729,102New$22.8613F
MATMATTEL INC (Call)0.01%172,500$169,500172,500New$0.9813F
UBXUNITY BIOT0.01%92,700$178,911-86,380-48.24%$1.9313F
CPRICAPRI HOLD (Put)0.01%13,900$141,960No Change$10.2113F
AFMDAFFIMED N0.01%254,943$159,339-565,057-68.91%$0.6213F
ARGXARGENX SE (Call)0.00973%12,000$135,30012,000New$11.2813F
IWMISHARES TR (Call)0.00922%30,000$128,250-10,000-25%$4.2813F
APLSAPELLIS PH (Call)0.00854%25,000$118,750-25,000-50%$4.7513F
PTCTPTC THERAP (Call)0.00854%50,000$118,75050,000New$2.3813F
ADTADT INC DE (Put)0.00832%35,600$115,700No Change$3.2513F
KVUEKENVUE INC (Call)0.00832%130,000$115,700130,000New$0.8913F
HOGHARLEY DAV (Put)0.00719%250,000$100,000No Change$0.413F
SWTXSPRINGWORK (Call)0.00712%30,000$99,00030,000New$3.313F
CONXWCONX CORP0.00709%316,890$98,584-143,328-31.14%$0.3113F
DTILPRECISION0.00625%238,105$86,908-1,100,190-82.21%$0.3613F
MRNAMODERNA IN (Call)0.00615%12,000$85,50012,000New$7.1313F
NBIXNEUROCRINE (Call)0.00611%10,000$85,00010,000New$8.513F
CTCXWCARMELL CO0.00596%371,250$82,826No Change$0.2213F
MGMMGM RESORT (Put)0.0059%35,000$82,075No Change$2.3513F
TVGRUPO TELE (Call)0.00581%73,500$80,85073,500New$1.113F
BPMCBLUEPRINT (Call)0.00518%10,000$72,000-15,000-60%$7.213F
INSMINSMED INC (Call)0.00512%30,000$71,25030,000New$2.3813F
SPYSPDR S&P 5 (Put)0.00489%277,500$67,988167,500152.27%$0.2513F
CRNXCRINETICS (Call)0.00485%30,000$67,500-30,000-50%$2.2513F
ROIVROIVANT SC (Call)0.0045%100,000$62,500100,000New$0.6313F
TGTXTG THERAPE (Call)0.00396%50,000$55,00050,000New$1.113F
THRXTHESEUS PH0.00365%12,517$50,694-168,935-93.1%$4.0513F
NCLHNORWEGIAN (Put)0.00346%55,100$48,153No Change$0.8713F
CZRCAESARS EN (Put)0.00318%15,000$44,175No Change$2.9513F
BIIBBIOGEN INC (Call)0.00316%10,000$44,00010,000New$4.413F
ARDXARDELYX IN (Call)0.0027%150,000$37,500No Change$0.2513F
WDCWESTERN DI (Put)0.00255%14,500$35,525No Change$2.4513F
BMRNBIOMARIN P (Call)0.00224%43,000$31,17543,000New$0.7313F
UALUNITED AIR (Put)0.0022%333,900$30,527No Change$0.0913F
RDNRADIAN GRO (Put)0.00198%50,000$27,500-4,900-8.93%$0.5513F
GAQWSGENERATION0.0019%938,800$26,380No Change$0.0313F
XLFSELECT SEC (Put)0.00178%450,000$24,750450,000New$0.0613F
CVIIWSCHURCHILL0.00172%133,530$23,875-60,018-31.01%$0.1813F
SKGRWSK GROWTH0.00168%420,833$23,356420,833New$0.0613F
UBERUBER TECHN (Put)0.00167%170,000$23,200170,000New$0.1413F
RCUSARCUS BIOS (Call)0.00164%35,000$22,750No Change$0.6513F
QUREUNIQURE NV (Call)0.00162%90,600$22,5306000.67%$0.2513F
RVNCREVANCE TH (Call)0.00159%55,000$22,12555,000New$0.413F
ABBVABBVIE INC (Call)0.00155%10,000$21,55010,000New$2.1613F
LEGNLEGEND BIO (Call)0.00155%12,500$21,56212,500New$1.7213F
CBAYCYMABAY TH (Put)0.00135%50,000$18,750-40,000-44.44%$0.3813F
VTYXVENTYX BIO (Call)0.00135%50,000$18,75020,00066.67%$0.3813F
MMACYS INC (Put)0.00123%131,000$17,088No Change$0.1313F
RYTMRHYTHM PHA (Put)0.00121%25,000$16,87525,000New$0.6813F
BIPBROOKFIELD (Put)0.0012%167,500$16,750167,500New$0.113F
RENEWCARTESIAN0.00119%122,826$16,582122,826New$0.1413F
GAMCWGOLDEN ARR0.00115%114,498$15,961-51,465-31.01%$0.1413F
CRSPCRISPR THE (Call)0.00108%15,000$15,00015,000New$113F
AACTWSARES ACQUI0.00098%85,383$13,66185,383New$0.1613F
FUBOFUBOTV INC (Call)0.00083%100,000$11,500No Change$0.1213F
IPXXWINFLECTION0.00078%103,486$10,866103,486New$0.113F
DISHDISH NETWO (Call)0.00076%100,000$10,500No Change$0.1113F
MNTNWSEVEREST CO0.00071%78,716$9,84078,716New$0.1313F
RMGCWRMG ACQUIS0.00071%126,755$9,824-57,331-31.14%$0.0813F
ISRGINTUITIVE (Put)0.00065%11,000$9,07511,000New$0.8313F
JTAIWJETAI INC0.00064%197,427$8,943No Change$0.0513F
SBXCWSSILVERBOX0.00061%91,076$8,42591,076New$0.0913F
DALDELTA AIR (Put)0.00059%27,900$8,268No Change$0.313F
KPTIKARYOPHARM (Call)0.00054%300,000$7,500No Change$0.0313F
MSAIWINFRARED C0.00053%145,732$7,345145,732New$0.0513F
SEPAWSEP ACQUIS0.00051%80,900$7,079-36,363-31.01%$0.0913F
IVCAWINVESTCORP0.0005%214,435$6,969214,435New$0.0313F
JWSMWSJAWS MUSTA0.00048%172,581$6,696No Change$0.0413F
AEONWSAEON BIOPH0.00047%74,997$6,555-33,921-31.14%$0.0913F
NAVINAVIENT CO (Put)0.00047%37,500$6,562No Change$0.1713F
PLAOWPATRIA LAT0.00047%178,033$6,480178,033New$0.0413F
LGSTWSEMPER PAR0.00047%185,416$6,490-1,177-0.63%$0.0413F
ALTUWALTITUDE A0.00045%231,102$6,217No Change$0.0313F
APXIWAPX ACQUIS0.00038%91,439$5,258No Change$0.0613F
CVNACARVANA CO (Put)0.00036%1,000,000$5,000No Change$0.00513F
COOLWCORNER GRO0.00035%75,251$4,899-34,036-31.14%$0.0713F
MCAAWMOUNTAIN &0.00035%136,155$4,834No Change$0.0413F
RDZNWROADZEN IN0.00034%67,181$4,709-1,600-2.33%$0.0713F
NEPNEXTERA EN (Put)0.00032%90,000$4,500-50,000-35.71%$0.0513F
SLACWSOCIAL LEV0.00031%128,141$4,318No Change$0.0313F
STWDSTARWOOD P (Put)0.0003%101,200$4,150No Change$0.0413F
OPTXWSYNTEC OPT0.0003%33,069$4,15033,069New$0.1313F
TRONWCORNER GRO0.00029%116,665$4,072No Change$0.0313F
LCWWSLEARN CW I0.00029%231,102$4,067231,102New$0.0213F
APACWSTONEBRIDG0.00028%138,661$3,938No Change$0.0313F
ROIVROIVANT SC (Put)0.00027%50,000$3,75050,000New$0.0813F
CSLMWCSLM ACQUI0.00021%68,781$2,958No Change$0.0413F
CSTAWSCONSTELLAT0.00021%139,600$2,973No Change$0.0213F
VICIVICI PPTYS (Put)0.00017%32,100$2,408No Change$0.0813F
SEDAWSSDCL EDGE0.00017%49,013$2,328-22,030-31.01%$0.0513F
BLUAWSBLUERIVER0.00016%49,521$2,228No Change$0.0413F
MRTXMIRATI THE (Call)0.00013%25,000$1,875No Change$0.0813F
SPECWSPECTAIRE0.00013%231,101$1,756231,101New$0.007613F
FNVTWFINNOVATE0.00013%130,406$1,774No Change$0.0113F
HHYATT HOTE (Put)0.00011%12,000$1,500-90,000-88.24%$0.1313F
PUCKWGOAL ACQUI0.0001%283,281$1,416No Change$0.00513F
RAREULTRAGENYX (Call)0.00009%10,000$1,250-85,000-89.47%$0.1313F
FICVWFRONTIER I0.00008%32,524$1,168No Change$0.0413F
AENTWALLIANCE E0.00007%116,781$993No Change$0.008513F
HLTHILTON WOR (Put)0.00005%14,000$700No Change$0.0513F
OMFONEMAIN HL (Put)0.00004%20,100$502No Change$0.0213F
DKNGDRAFTKINGS (Put)0.00003%82,500$412No Change$0.0049913F
EXPEEXPEDIA GR (Put)0.00003%11,000$440No Change$0.0413F
WINVWWINVEST AC0.00001%18,392$208No Change$0.0113F
ABCMABCAM PLC-5,664,354Exited13F
AESAES CORP-422,400Exited13F
ENERACCRETION-231,102Exited13F
ENERRACCRETION-97,876Exited13F
SLRNACELYRIN I (Call)-14,500Exited13F
ACRSACLARIS TH-68,014Exited13F