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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
SAVESPIRIT AIR (PRN)4.41%87,636,000$61,336,551-3,864,000-4.22%$0.713F
RYAAYRYANAIR HO2.08%217,335$28,983,796-23,698-9.83%$133.3613F
BANDBANDWIDTH (PRN)1.51%33,000,000$20,955,000-2,000,000-5.71%$0.6413F
SCRMSCREAMING1.31%1,719,492$18,226,615-772,879-31.01%$10.613F
GHIXGORES HOLD1.18%1,563,175$16,413,338-702,617-31.01%$10.513F
PETQPETIQ INC (PRN)1.08%15,000,000$15,069,916-5,000,000-25%$113F
TVTXTRAVERE TH (PRN)1.08%22,500,000$14,965,320-2,500,000-10%$0.6713F
OXYWSOCCIDENTAL0.82%300,000$11,353,500-700,000-70%$37.8513F
TREELENDINGTRE (PRN)0.8%13,500,000$11,171,250-16,500,000-55%$0.8313F
IRINGERSOLL0.74%132,518$10,248,942-90,300-40.53%$77.3413F
NVDANVIDIA COR0.64%17,971$8,899,599-9,800-35.29%$495.2213F
BALLBALL CORP0.61%147,340$8,474,997-44,800-23.32%$57.5213F
OKTAOKTA INC0.55%85,000$7,695,050-17,500-17.07%$90.5313F
ECLECOLAB INC0.52%36,500$7,239,775-3,100-7.83%$198.3513F
AVGOBROADCOM I0.49%6,083$6,790,149-1,640-21.24%$1116.2513F
ESTCELASTIC N0.49%60,000$6,762,000-62,500-51.02%$112.713F
CVIICHURCHILL0.48%635,761$6,675,490-285,762-31.01%$10.513F
SKGRSK GROWTH0.48%614,130$6,638,745-276,037-31.01%$10.8113F
MEOHMETHANEX C0.47%139,400$6,601,984-12,000-7.93%$47.3613F
NVRNVR INC0.47%938$6,566,422-1,703-64.48%$7000.4513F
HUBBHUBBELL IN0.46%19,500$6,414,135-800-3.94%$328.9313F
AMZNAMAZON COM0.45%41,526$6,309,460-81,000-66.11%$151.9413F
REXRREXFORD IN0.44%108,689$6,097,453-246,547-69.4%$56.113F
NVTNVENT ELEC0.43%101,570$6,001,771-31,900-23.9%$59.0913F
ONON SEMICON0.41%68,000$5,680,040-47,111-40.93%$83.5313F
SPLKSPLUNK INC (PRN)0.39%5,719,000$5,398,736-281,000-4.68%$0.9413F
ADCAGREE RLTY0.38%84,392$5,312,476-115,524-57.79%$62.9513F
CFLTCONFLUENT0.38%225,000$5,265,000-100,000-30.77%$23.413F
APHAMPHENOL C0.36%50,650$5,020,934-13,300-20.8%$99.1313F
SBACSBA COMMUN0.36%19,771$5,015,705-48,032-70.84%$253.6913F
SMARSMARTSHEET0.34%100,080$4,785,826-12,420-11.04%$47.8213F
NNNNNN REIT I0.33%105,922$4,565,238-181,978-63.21%$43.113F
RHPRYMAN HOSP0.33%42,127$4,636,498-38,763-47.92%$110.0613F
EVLVEVOLV TECH0.32%956,623$4,515,261-429,988-31.01%$4.7213F
OREALTY INC0.3%73,710$4,232,428-111,693-60.24%$57.4213F
RENECARTESIAN0.29%368,478$4,038,519-165,622-31.01%$10.9613F
ARVNARVINAS IN0.27%91,132$3,750,993-19,050-17.29%$41.1613F
TRNOTERRENO RL0.27%59,381$3,721,407-105,446-63.97%$62.6713F
GAQGENERATION0.26%325,141$3,547,288-194,859-37.47%$10.9113F
AMTAMERICAN T0.25%16,237$3,505,244-61,121-79.01%$215.8813F
AUTLAUTOLUS TH0.25%538,766$3,469,653-47,153-8.05%$6.4413F
LCWLEARN CW I0.25%318,875$3,447,039-143,328-31.01%$10.8113F
ROSSROSS ACQUI0.25%318,046$3,463,521-142,956-31.01%$10.8913F
PEAKHEALTHPEAK0.24%165,530$3,277,494-203,020-55.09%$19.813F
SBRASABRA HEAL0.24%236,423$3,373,756-375,961-61.39%$14.2713F
CHEACHENGHE AC0.24%307,065$3,377,715-138,018-31.01%$1113F
MRUSMERUS N V0.24%121,300$3,335,750-30,806-20.25%$27.513F
ELSEQUITY LIF0.23%44,660$3,150,316-43,944-49.6%$70.5413F
NHINATIONAL H0.23%58,150$3,247,678-99,709-63.16%$55.8513F
ELMEELME COMMU0.23%223,496$3,263,042-558,172-71.41%$14.613F
AXNXAXONICS IN0.22%48,306$3,006,082-2,370-4.68%$62.2313F
PYPLPAYPAL HLD0.22%50,000$3,070,500-102,500-67.21%$61.4113F
AMHAMERICAN H0.21%80,258$2,886,078-215,927-72.9%$35.9613F
CFFSCF ACQUISI0.2%250,108$2,713,672-112,419-31.01%$10.8513F
FIACFOCUS IMPA0.2%255,100$2,792,070-114,663-31.01%$10.9513F
SBXCSILVERBOX0.2%273,228$2,825,178-122,808-31.01%$10.3413F
SWTXSPRINGWORK0.2%75,250$2,746,625-17,986-19.29%$36.513F
RAREULTRAGENYX0.2%56,956$2,723,636-19,959-25.95%$47.8213F
APTMALPHA PART0.2%255,100$2,729,570-114,663-31.01%$10.713F
PLAOPATRIA LAT0.2%245,652$2,726,737-110,415-31.01%$11.113F
ACELACCEL ENTE0.19%254,737$2,616,149-115,220-31.14%$10.2713F
NLYANNALY CAP0.19%133,493$2,585,759-216,122-61.82%$19.3713F
HRHEALTHCARE0.19%151,026$2,602,178-281,968-65.12%$17.2313F
IDYAIDEAYA BIO0.19%74,575$2,653,378-51,574-40.88%$35.5813F
NBIXNEUROCRINE0.19%19,796$2,608,321-14,002-41.43%$131.7613F
OHIOMEGA HEAL0.18%79,736$2,444,706-206,570-72.15%$30.6613F
PTGXPROTAGONIS0.18%106,154$2,434,111-30,114-22.1%$22.9313F
NETDNABORS ENE0.18%241,468$2,512,475-108,532-31.01%$10.4113F
MNTNEVEREST CO0.17%218,844$2,394,153-98,367-31.01%$10.9413F
GTYGETTY RLTY0.17%81,093$2,369,537-113,640-58.36%$29.2213F
MAAMID-AMER A0.17%18,092$2,432,650-39,417-68.54%$134.4613F
ORICORIC PHARM0.17%262,956$2,419,195-88,546-25.19%$9.213F
ABBVABBVIE INC0.16%14,721$2,281,313-3,179-17.76%$154.9713F
AZNASTRAZENEC0.16%32,067$2,159,712-17,475-35.27%$67.3513F
EGPEASTGROUP0.16%12,054$2,212,391-27,181-69.28%$183.5413F
IRTCIRHYTHM TE0.16%20,347$2,177,943-811-3.83%$107.0413F
GOOGLALPHABET I0.15%15,000$2,095,350-2,500-14.29%$139.6913F
FUSNFUSION PHA0.15%213,107$2,047,958-61,461-22.38%$9.6113F
APCAAP ACQUISI0.15%187,581$2,087,777-84,314-31.01%$11.1313F
APXIAPX ACQUIS0.15%187,581$2,097,156-84,314-31.01%$11.1813F
IPXXINFLECTION0.15%206,973$2,138,031-93,027-31.01%$10.3313F
BRKHBURTECH AC0.14%187,581$2,015,558-84,314-31.01%$10.7513F
DCPHDECIPHERA0.14%117,920$1,902,050-35,817-23.3%$16.1313F
GEHCGE HEALTHC0.14%25,203$1,948,696-39,132-60.83%$77.3213F
IMCRIMMUNOCORE0.14%27,641$1,888,433-11,704-29.75%$68.3213F
PODDINSULET CO0.14%9,047$1,963,018-5,353-37.17%$216.9813F
PLDPROLOGIS I0.14%14,848$1,979,238-37,697-71.74%$133.313F
TMCITREACE MED0.14%154,913$1,975,141-18,091-10.46%$12.7513F
VSACVISION SEN0.14%175,381$1,938,837-78,831-31.01%$11.0613F
SLAMSLAM CORP0.14%182,628$1,979,688-82,344-31.08%$10.8413F
ANABANAPTYSBIO0.13%87,124$1,866,196-37,339-30%$21.4213F
DSAQDIRECT SEL0.13%160,685$1,749,860-72,226-31.01%$10.8913F
INSMINSMED INC0.13%56,727$1,757,970-2,565-4.33%$30.9913F
LTCLTC PPTYS0.13%55,297$1,776,140-92,443-62.57%$32.1213F
SZZLSIZZLE ACQ0.13%159,437$1,755,401-71,665-31.01%$11.0113F
CSTACONSTELLAT0.13%160,688$1,775,602-72,679-31.14%$11.0513F
AACTARES ACQUI0.13%170,767$1,782,807-76,755-31.01%$10.4413F
KNSAKINIKSA PH0.13%100,722$1,766,664-5,701-5.36%$17.5413F
MDTMEDTRONIC0.13%22,328$1,839,381-37,468-62.66%$82.3813F
PHYTPYROPHYTE0.13%159,438$1,756,210-95,552-37.47%$11.0213F
RCFARCF ACQUIS0.13%159,438$1,750,629-71,664-31.01%$10.9813F
AOGOAROGO CAPI0.12%156,317$1,681,971-70,262-31.01%$10.7613F
FEXDFINTECH EC0.12%159,438$1,714,756-71,664-31.01%$10.7613F
INSPINSPIRE ME0.12%8,485$1,726,104-4,086-32.5%$203.4313F
PDDPDD HOLDIN0.12%11,795$1,725,726-19,169-61.91%$146.3113F
SRRKSCHOLAR RO0.12%85,129$1,600,425-127,452-59.95%$18.813F
SLNSILENCE TH0.12%93,198$1,618,849-5,128-5.22%$17.3713F
TGVCTG VENTURE0.12%156,317$1,698,384-70,262-31.01%$10.8613F
VERAVERA THERA0.12%106,972$1,645,229-71,019-39.9%$15.3813F
VICIVICI PPTYS0.12%53,992$1,721,265-168,995-75.79%$31.8813F
CSLMCSLM ACQUI0.12%156,317$1,704,637-70,262-31.01%$10.9113F
IVCBINVESTCORP0.12%156,317$1,722,613-70,262-31.01%$11.0213F
PLMIPLUM ACQUI0.12%159,438$1,735,483-71,664-31.01%$10.8913F
TLGYTLGY ACQUI0.12%156,317$1,735,900-70,262-31.01%$11.113F
ONONON HLDG AG0.12%60,000$1,618,200-235,000-79.66%$26.9713F
ESPRESPERION T0.11%527,123$1,576,098-104,824-16.59%$2.9913F
MTCHMATCH GROU0.11%40,000$1,460,000-10,000-20%$36.513F
MIRMMIRUM PHAR0.11%49,912$1,473,402-11,088-18.18%$29.5213F
OCULOCULAR THE0.11%332,091$1,481,126-10,020-2.93%$4.4613F
FNAPARAGON 280.11%126,645$1,574,197-4,640-3.53%$12.4313F
RAPTRAPT THERA0.11%61,889$1,537,942-31,927-34.03%$24.8513F
RLAYRELAY THER0.11%133,733$1,472,400-13,113-8.93%$11.0113F
FNVTFINNOVATE0.11%143,494$1,587,044-64,498-31.01%$11.0613F
BCYCBICYCLE TH0.1%73,601$1,330,706-4,301-5.52%$18.0813F
IONSIONIS PHAR0.1%28,624$1,448,088-33,435-53.88%$50.5913F
LRMRLARIMAR TH0.1%319,901$1,455,550-58,604-15.48%$4.5513F
MGMMGM RESORT0.1%32,241$1,440,528-17,259-34.87%$44.6813F
WELLWELLTOWER0.1%15,117$1,363,100-53,366-77.93%$90.1713F
ZYMEZYMEWORKS0.1%136,313$1,416,292-208,159-60.43%$10.3913F
HCMAHCM ACQUIS0.1%125,054$1,396,853-56,209-31.01%$11.1713F
WELINTEGRATED0.1%125,054$1,403,106-56,209-31.01%$11.2213F
ARDXARDELYX IN0.09%204,600$1,268,520-15,400-7%$6.213F
BIIBBIOGEN INC0.09%4,879$1,262,539-17,121-77.82%$258.7713F
EWTXEDGEWISE T0.09%114,685$1,254,654-25,173-18%$10.9413F
GLPIGAMING & L0.09%24,133$1,190,964-90,357-78.92%$49.3513F
OPRAOPERA LTD0.09%90,000$1,190,700-35,000-28%$13.2313F
KIDSORTHOPEDIA0.09%40,314$1,310,608-15,905-28.29%$32.5113F
RIGLRIGEL PHAR0.09%899,335$1,304,036-252,430-21.92%$1.4513F
NFYSENPHYS ACQ0.09%122,826$1,310,553-55,207-31.01%$10.6713F
BSXBOSTON SCI0.08%19,785$1,143,771-31,607-61.5%$57.8113F
CRWDCROWDSTRIK0.08%4,100$1,046,812-13,400-76.57%$255.3213F
OFIXORTHOFIX M0.08%80,249$1,081,757-27,783-25.72%$13.4813F
PSTGPURE STORA0.08%30,000$1,069,800-86,963-74.35%$35.6613F
SDGRSCHRODINGE0.08%30,632$1,096,626-5,068-14.2%$35.813F
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
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
PTCTPTC THERAP0.07%36,052$993,593-6,549-15.37%$27.5613F
NOWSERVICENOW0.07%1,414$998,977-6,086-81.15%$706.4913F
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
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
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
PRCTPROCEPT BI0.06%19,717$826,339-15,399-43.85%$41.9113F
SVRASAVARA INC0.06%176,886$831,364-203,466-53.49%$4.713F
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
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
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
THRDTHIRD HARM0.05%64,704$709,803-60,296-48.24%$10.9713F
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
ATXSASTRIA THE0.04%78,120$599,962-45,880-37%$7.6813F
BBIOBRIDGEBIO0.04%14,318$578,018-42,982-75.01%$40.3713F
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
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
SAVESPIRIT AIR0.04%30,000$491,700-1,117,771-97.39%$16.3913F
PCVXVAXCYTE IN0.04%8,030$504,284-1,970-19.7%$62.813F
VSTMVERASTEM I0.04%61,803$503,076-94,101-60.36%$8.1413F
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
ACRVACRIVON TH0.03%93,443$459,740-11,557-11.01%$4.9213F
ATRCATRICURE I0.03%12,199$435,382-37,094-75.25%$35.6913F
BCRXBIOCRYST P0.03%60,159$360,352-181,661-75.12%$5.9913F
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
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
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
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
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
IFRXINFLARX NV0.02%201,880$329,064-188,120-48.24%$1.6313F
HLNHALEON PLC0.01%21,500$176,945-52,685-71.02%$8.2313F
UBXUNITY BIOT0.01%92,700$178,911-86,380-48.24%$1.9313F
AFMDAFFIMED N0.01%254,943$159,339-565,057-68.91%$0.6213F
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
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
BPMCBLUEPRINT (Call)0.00518%10,000$72,000-15,000-60%$7.213F
CRNXCRINETICS (Call)0.00485%30,000$67,500-30,000-50%$2.2513F
THRXTHESEUS PH0.00365%12,517$50,694-168,935-93.1%$4.0513F
RDNRADIAN GRO (Put)0.00198%50,000$27,500-4,900-8.93%$0.5513F
CVIIWSCHURCHILL0.00172%133,530$23,875-60,018-31.01%$0.1813F
CBAYCYMABAY TH (Put)0.00135%50,000$18,750-40,000-44.44%$0.3813F
GAMCWGOLDEN ARR0.00115%114,498$15,961-51,465-31.01%$0.1413F
RMGCWRMG ACQUIS0.00071%126,755$9,824-57,331-31.14%$0.0813F
SEPAWSEP ACQUIS0.00051%80,900$7,079-36,363-31.01%$0.0913F
AEONWSAEON BIOPH0.00047%74,997$6,555-33,921-31.14%$0.0913F
LGSTWSEMPER PAR0.00047%185,416$6,490-1,177-0.63%$0.0413F
COOLWCORNER GRO0.00035%75,251$4,899-34,036-31.14%$0.0713F
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