Skip to content

Weiss Asset Management LP

Follow

13F filer, CIK 1357550, BOSTON, MA

Weiss Asset Management LP reported $8,667,924,190 across 597 holdings for the quarter ended 2025-09-30, in a 13F-HR filed 2025-11-14. Its ten largest share positions make up 52.75% of the portfolio.

Filed (acceptance time not in the bulk data set), ingested 13F-HR 0001357550-25-000038

Period
2025-09-30
Reported value
$8.67B
Holdings
597
Top 10 weight
52.75%
New
432
Sold out
246

Largest buys vs the previous quarter

SecurityShares changeApprox. value
Kadded+3,026,520$248M
ETHAadded+7,300,442$230M
TSLAadded+471,916$210M
IBITadded+2,840,815$185M
CYBERARK SOFTWARE LTD/ISRAELnew+256,726$124M

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
MSTRreduced-820,315-$264M
SMCIreduced-1,589,393-$76.2M
AMEDISYS INCexited-689,428-$67.8M
IEXexited-334,529-$58.7M
WELLexited-372,750-$57.3M

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 563 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
MSTRSTRATEGY INC Stockput3,205,200$1.03B-300,000
NVDANVIDIA CORPORATION COMput1,000,000$187M-3,000,000
IBITISHARES BITCOIN TRUST ETF SHSput2,200,000$143M+500,000
ETHAISHARES ETHEREUM TR COMput2,490,000$78.5Mnew
AALAMERICAN AIRLINES GROUP INC Stockput4,430,400$49.8M0
MPTMEDICAL PROPERTIES TRUST INC REITput8,054,600$40.8M-219,500
ENPHENPHASE ENERGY INC Stockput1,000,000$35.4M0
AVGOBROADCOM INC COMput100,000$33M0
SPYSTATE STR SPDR S&P 500 ETF T SHSput46,500$31M-9,300
SOCSABLE OFFSHORE CORP COM SHSput700,000$12.2Mnew
OSCROSCAR HEALTH INC CL Aput500,000$9.46Mnew
NIONIO INC ADRput1,000,000$7.62M0
FUBOFUBOTV INC COMput500,000$2.08M0
IQIQIYI INC ADRput809,600$2.07M0

Principal amounts

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

SecurityTypeAmountValueChange
INTERDIGITAL INCINTERDIGITAL INC NOTE 3.500% 6/0principal60,062,000$269M+20,000,000
STRATEGY INCSTRATEGY INC NOTE 0.625% 9/1principal95,258,000$180Mnew
SUPER MICRO COMPUTER INCSUPER MICRO COMPUTER INC NOTE 3.500% 3/0principal137,579,000$141M+20,695,000
IONIS PHARMACEUTICALS INIONIS PHARMACEUTICALS IN NOTE 4/0principal107,295,000$132M+30,679,000
SUNRUN INCSUNRUN INC NOTE 4.000% 3/0principal73,958,000$100M-15,750,000
BRIDGEBIO PHARMA INCBRIDGEBIO PHARMA INC NOTE 2.500% 3/1principal67,624,000$94.9M0
WEIBO CORPWEIBO CORP CNVprincipal62,043,000$80.6M0
GUESS INCGUESS INC BONDprincipal74,105,000$73.5Mnew
ORMAT TECHNOLOGIES INCORMAT TECHNOLOGIES INC NOTE 2.500% 7/1principal42,350,000$51.2M-12,100,000
NIO INCNIO INC NOTE 3.875%10/1principal42,642,000$45.9M-35,000,000
ETSY INCETSY INC NOTE 0.125% 9/0principal38,397,000$35.5M0
WEC ENERGY GROUP INCWEC ENERGY GROUP INC NOTE 4.375% 6/0principal23,410,000$28.1Mnew
GREENBRIER COS INCGREENBRIER COS INC NOTE 2.875% 4/1principal22,580,000$24.2M0
AEROVIRONMENT INCAEROVIRONMENT INC NOTE 7/1principal12,500,000$15.5Mnew
KOSMOS ENERGY LTDKOSMOS ENERGY LTD NOTE 3.125% 3/1principal23,100,000$14.9M0
LITHIUM ARGENTINA AGLITHIUM ARGENTINA AG NOTE 1.750% 1/1principal15,625,000$14.1M-4,711,000
CIPHER DIGITAL INCCIPHER DIGITAL INC NOTE 1.750% 5/1principal2,500,000$7.42Mnew
CAPITAL SOUTHWEST CORPCAPITAL SOUTHWEST CORP Convertible Bondprincipal6,434,000$6.4M+1,434,000
CSG SYS INTL INCCSG SYS INTL INC NOTE 3.875% 9/1principal5,000,000$5.59M-8,351,000
FUBOTV INCFUBOTV INC NOTE 3.250% 2/1principal3,000,000$2.97M0

Sold out in Q3 2025

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

SecurityShares beforeValue beforeType
CAMTEK LTDCAMTEK LTD66,308,000$105Mprincipal
AMEDISYS INCAMEDISYS INC689,428$67.8Mshares
IEXIDEX CORP334,529$58.7Mshares
WELLWELLTOWER INC372,750$57.3Mshares
DASHDOORDASH INC224,443$55.3Mshares
CHTRCHARTER COMMUNICATIONS INC127,600$52.2Mput
CRHCRH PLC535,736$49.2Mshares
BACBANK OF AMER CORP947,326$44.8Mshares
NDAQNASDAQ INC462,554$41.4Mshares
ANSYS INCANSYS INC114,222$40.1Mshares
SPGSIMON PPTY GROUP INC NEW247,691$39.8Mshares
CMCSACOMCAST CORP NEW1,050,000$37.5Mput
CHART INDS INCCHART INDS INC615,000$37.5Mshares
CRSCARPENTER TECHNOLOGY CORP135,029$37.3Mshares
CORCENCORA INC121,831$36.5Mshares
IQVIQVIA HLDGS INC225,307$35.5Mshares
MRKMERCK & CO INC447,390$35.4Mshares
SFMSPROUTS FMRS MKT INC213,270$35.1Mshares
INSMINSMED INC339,825$34.2Mshares
EXEEXPAND ENERGY CORPORATION287,752$33.6Mshares
JUNIPER NETWORKS INCJUNIPER NETWORKS INC820,536$32.8Mshares
PEPPEPSICO INC241,093$31.8Mshares
TSLATESLA INC100,000$31.8Mput
ROPROPER TECHNOLOGIES INC49,608$28.1Mshares
SAIASAIA INC98,136$26.9Mshares
MR COOPER GROUP INCMR COOPER GROUP INC179,771$26.8Mshares
CGCARLYLE GROUP INC495,199$25.5Mshares
IBKRINTERACTIVE BROKERS GROUP IN449,952$24.9Mshares
MLIMUELLER INDS INC306,160$24.3Mshares
PRMBPRIMO BRANDS CORPORATION808,204$23.9Mshares
AJGGALLAGHER ARTHUR J & CO73,201$23.4Mshares
CVXCHEVRON CORPORATION163,114$23.4Mshares
PARAMOUNT GLOBALPARAMOUNT GLOBAL1,796,493$23.2Mshares
HESS CORPHESS CORP166,646$23.1Mshares
IWMISHARES TR101,580$21.9Mshares
NEXTERA ENERGY INCNEXTERA ENERGY INC550,000$21.9Mshares
FTVFORTIVE CORP408,569$21.3Mshares
DEDEERE & CO39,797$20.2Mshares
HLNEHAMILTON LANE INC137,101$19.5Mshares
AITAPPLIED INDL TECHNOLOGIES IN83,688$19.5Mshares
GOOGLALPHABET INC107,726$19Mshares
RKLBROCKET LAB CORP528,921$18.9Mshares
PGPROCTER & GAMBLE CO113,107$18Mshares
SouthState CorpSouthState Corp192,341$17.7Mshares
ASTSAST SPACEMOBILE INC371,396$17.4Mshares
EXLSEXLSERVICE HLDGS INC396,105$17.3Mshares
APPAPPLOVIN CORP48,121$16.8Mshares
CAVACAVA GROUP INC195,573$16.5Mshares
WTRGESSENTIAL UTILS INC434,672$16.1Mshares
PLTRPALANTIR TECHNOLOGIES INC113,590$15.5Mshares
FTAIFTAI AVIATION LTD134,604$15.5Mshares
WMBWILLIAMS COS INC238,875$15Mshares
SYKSTRYKER CORPORATION37,847$15Mshares
PGRPROGRESSIVE CORP53,319$14.2Mshares
AXONAXON ENTERPRISE INC16,653$13.8Mshares
DRSLEONARDO DRS INC273,964$12.7Mshares
ODFLOLD DOMINION FREIGHT LINE IN78,407$12.7Mshares
BABOEING CO59,404$12.4Mshares
WCCWESCO INTL INC66,232$12.3Mshares
NIO INCNIO INC18,950,000$12.1Mprincipal
MGMMGM RESORTS INTERNATIONAL350,036$12Mshares
RVMDREVOLUTION MEDICINES INC303,772$11.2Mshares
IRMIRON MTN INC DEL108,426$11.1Mshares
CORZCORE SCIENTIFIC INC NEW639,693$10.9Mshares
SBUXSTARBUCKS CORP118,413$10.9Mshares
CLXCLOROX CO DEL89,671$10.8Mshares
AURAURORA INNOVATION INC2,051,216$10.7Mshares
POSTPOST HLDGS INC96,294$10.5Mshares
ANAUTONATION INC51,931$10.3Mshares
ADBEADOBE INC25,607$9.91Mshares
RALRALLIANT CORP186,187$9.03Mshares
TMUST-MOBILE US INC37,723$8.99Mshares
ETSY INCETSY INC10,160,000$8.72Mprincipal
ZSZSCALER INC26,451$8.3Mshares
AFLAFLAC INC77,640$8.19Mshares
TTDTHE TRADE DESK INC112,344$8.09Mshares
JBTMJBT MAREL CORPORATION65,825$7.92Mshares
GTESGATES INDL CORP PLC337,099$7.76Mshares
SLGNSILGAN HLDGS INC141,597$7.67Mshares
GWWWW GRAINGER INC7,219$7.51Mshares
TTANSERVICETITAN INC70,000$7.5Mshares
WSTWEST PHARMACEUTICAL SVSC INC32,175$7.04Mshares
MTSIMACOM TECH SOLUTIONS HLDGS I48,177$6.9Mshares
JOBY AVIATION INCJOBY AVIATION INC2,863,204$6.87Mshares
UNHUNITEDHEALTH GROUP INC21,210$6.62Mshares
HAYWHAYWARD HLDGS INC467,729$6.45Mshares
APTVAPTIV PLC94,374$6.44Mshares
GTMZOOMINFO TECHNOLOGIES INC628,975$6.37Mshares
VERVE THERAPEUTICS INCVERVE THERAPEUTICS INC538,422$6.05Mshares
HASHASBRO INC81,895$6.05Mshares
OBAWUOXLEY BRIDGE ACQ LTD600,000$6.01Mshares
SWKSSKYWORKS SOLUTIONS INC80,577$6Mshares
WMTWALMART INC60,423$5.91Mshares
HPQHP INC232,941$5.7Mshares
CORTCORCEPT THERAPEUTICS INC73,625$5.4Mshares
PMPHILIP MORRIS INTL INC29,600$5.39Mshares
KOCOCA COLA CO73,900$5.23Mshares
PSNPARSONS CORP DEL72,565$5.21Mshares
ZWSZURN ELKAY WATER SOLNS CORP140,966$5.16Mshares
OPENOPENDOOR TECHNOLOGIES INC9,606,779$5.12Mshares
PACHUPIONEER ACQUISITION I CORP500,000$5Mshares
VLOVALERO ENERGY CORP35,540$4.78Mshares
WMGWARNER MUSIC GROUP CORP172,177$4.69Mshares
EBAYEBAY INC.61,530$4.58Mshares
GOGOGOGO INC297,336$4.36Mshares
TREXTREX INC71,665$3.9Mshares
MDLZMONDELEZ INTL INC56,600$3.82Mshares
PAYOPAYONEER GLOBAL INC536,940$3.68Mshares
CLCOLGATE PALMOLIVE CO40,300$3.66Mshares
SWXSOUTHWEST GAS HLDGS INC48,876$3.64Mshares
APGEAPOGEE THERAPEUTICS INC82,302$3.57Mshares
SPRINGWORKS THERAPEUTICS INCSPRINGWORKS THERAPEUTICS INC75,969$3.57Mshares
TKOTKO GROUP HOLDINGS INC19,458$3.54Mshares
ALGNALIGN TECHNOLOGY INC17,932$3.4Mshares
GOLFACUSHNET HLDGS CORP45,510$3.31Mshares
RIVNRIVIAN AUTOMOTIVE INC236,462$3.25Mshares
PNTGPENNANT GROUP INC108,631$3.24Mshares
VKTXVIKING THERAPEUTICS INC121,776$3.23Mshares
PARRPAR PAC HOLDINGS INC118,358$3.14Mshares
CERTCERTARA INC266,600$3.12Mshares
TGNATEGNA INC184,872$3.1Mshares
ABNBAIRBNB INC23,412$3.1Mshares
KNSAKINIKSA PHARMACEUTICALS INTL111,710$3.09Mshares
CRCCALIFORNIA RES CORP65,900$3.01Mshares
FELEFRANKLIN ELEC INC33,492$3.01Mshares
RDNRADIAN GROUP INC82,002$2.95Mshares
WFRDWEATHERFORD INTL PLC58,138$2.92Mshares
SAROSTANDARDAERO INC89,808$2.84Mshares
HASIHA SUSTAINABLE INFRA CAP INC102,356$2.75Mshares
CONCONCENTRA GROUP HOLDINGS PAR133,129$2.74Mshares
AREALEXANDRIA REAL ESTATE EQ IN36,370$2.64Mshares
FIVEFIVE BELOW INC19,480$2.56Mshares
TRMBTRIMBLE INC33,483$2.54Mshares
BYDBOYD GAMING CORP32,482$2.54Mshares
WTWISDOMTREE INC219,605$2.53Mshares
LILI AUTO INC93,119$2.52Mshares
BROBROWN & BROWN INC22,322$2.47Mshares
SWSMURFIT WESTROCK PLC56,693$2.45Mshares
AGYSAGILYSYS INC21,217$2.43Mshares
TFXTELEFLEX INCORPORATED19,844$2.35Mshares
KRKROGER CO32,300$2.32Mshares
BKNGBOOKING HOLDINGS INC399$2.31Mshares
KYMRKYMERA THERAPEUTICS INC50,787$2.22Mshares
IPCXINFLECTION PT ACQUISITION CO206,100$2.11Mshares
CCAQCOLLECTIVE ACQUISITION CORP210,200$2.11Mshares
AXINUAXIOM INTELLIGENCE AC CORP 1200,000$2.02Mshares
DOCNDIGITALOCEAN HLDGS INC70,500$2.01Mshares
LWACULIGHTWAVE ACQUISITION CORP200,000$2.01Mshares
FIGXUFIGX CAP ACQUISITION CORP.200,000$2Mshares
PGNYPROGYNY INC85,644$1.88Mshares
LNWOLIGHT & WONDER INC19,316$1.86Mshares
VSATVIASAT INC125,925$1.84Mshares
HRMYHARMONY BIOSCIENCES HLDGS IN58,102$1.84Mshares
GNRCGENERAC HLDGS INC12,721$1.82Mshares
BATRKATLANTA BRAVES HLDGS INC38,867$1.82Mshares
GXOGXO LOGISTICS INCORPORATED36,933$1.8Mshares
VSXYVICTORIAS SECRET AND CO97,106$1.8Mshares
BLUEPRINT MEDICINES CORPBLUEPRINT MEDICINES CORP13,873$1.78Mshares
OCULOCULAR THERAPEUTIX INC187,615$1.74Mshares
BIRKBIRKENSTOCK HOLDING PLC34,835$1.71Mshares
PINSPINTEREST INC46,887$1.68Mshares
BLDRBUILDERS FIRSTSOURCE INC14,257$1.66Mshares
RVTYREVVITY INC16,964$1.64Mshares
AEOAMERICAN EAGLE OUTFITTERS IN170,426$1.64Mshares
PAGPENSKE AUTOMOTIVE GRP INC9,523$1.64Mshares
WAFDWAFD INC55,823$1.63Mshares
RSRELIANCE INC5,116$1.61Mshares
ELFE L F BEAUTY INC12,666$1.58Mshares
XRPNARMADA ACQUISITION CORP II150,000$1.5Mshares
BACCUBLUE ACQUISITION CORP.149,785$1.5Mshares
BLUWUBLUE WTR ACQUISITION CORP. I150,000$1.5Mshares
PPLIPEOPLE INC39,737$1.48Mshares
CADECADENCE BANK46,000$1.47Mshares
GISGENERAL MILLS INC28,300$1.47Mshares
PRKSUNITED PARKS & RESORTS INC30,942$1.46Mshares
MQMARQETA INC248,951$1.45Mshares
MIRMIRION TECHNOLOGIES INC66,910$1.44Mshares
UALUNITED AIRLS HLDGS INC18,034$1.44Mshares
SPNTSIRIUSPOINT LTD70,303$1.43Mshares
MGNIMAGNITE INC59,132$1.43Mshares
ASAMER SPORTS INC35,950$1.39Mshares
MNSTMONSTER BEVERAGE CORP NEW21,920$1.37Mshares
HGVHILTON GRAND VACATIONS INC32,709$1.36Mshares
AINALBANY INTL CORP18,873$1.32Mshares
ADMARCHER DANIELS MIDLAND CO25,000$1.32Mshares
HSYHERSHEY CO7,900$1.31Mshares
TRSTRIMAS CORP43,383$1.24Mshares
CHDCHURCH & DWIGHT CO INC12,900$1.24Mshares
FOOT LOCKER INCFOOT LOCKER INC50,000$1.23Mshares
DMCDEL MONTE CORP37,687$1.22Mshares
TALOTALOS ENERGY INC142,996$1.21Mshares
LZLEGALZOOM COM INC134,788$1.2Mshares
BURBURFORD CAPITAL LIMITED82,516$1.18Mshares
KHCKRAFT HEINZ CO45,400$1.17Mshares
AVBPARRIVENT BIOPHARMA INC53,786$1.17Mshares
RDAGREPUBLIC DIGITAL ACQUISITION112,523$1.16Mshares
TRUPTRUPANION INC20,515$1.14Mshares
MNSOMINISO GROUP HLDG LTD61,456$1.12Mshares
CARTMAPLEBEAR INC24,129$1.09Mshares
OTTROTTER TAIL CORP13,803$1.06Mshares
ASHASHLAND INC20,896$1.05Mshares
JAMFJAMF HOLDING CORP109,852$1.04Mshares
OSONESTREAM INC36,451$1.03Mshares
UFPTUFP TECHNOLOGIES INC4,214$1.03Mshares
MKCMCCORMICK & CO INC13,500$1.02Mshares
BYBYLINE BANCORP INC37,991$1.02Mshares
NSITINSIGHT ENTERPRISES INC7,136$985Kshares
SEMSELECT MED HLDGS CORP64,109$973Kshares
GBTGGLOBAL BUSINESS TRAVEL GROUP154,441$973Kshares
ELVNENLIVEN THERAPEUTICS INC47,622$955Kshares
PTENPATTERSON-UTI ENERGY INC159,057$943Kshares
CABOCABLE ONE INC6,780$921Kshares
TDCTERADATA CORP DEL38,294$854Kshares
TSNTYSON FOODS INC15,000$839Kshares
ECVTECOVYST INC100,000$823Kshares
CHYMCHIME FINL INC23,200$801Kshares
TRTOOTSIE ROLL INDS INC23,048$771Kshares
MATVMATIV HOLDINGS INC107,259$732Kshares
BSAAUBEST SPAC I ACQUISITION CORP70,000$703Kshares
VOYGVOYAGER TECHNOLOGIES INC17,500$687Kshares
ZYMEZYMEWORKS INC54,171$680Kshares
HNGEHINGE HEALTH INC11,168$578Kshares
BATRAATLANTA BRAVES HLDGS INC11,655$574Kshares
SJMSMUCKER J M CO5,500$540Kshares
CBLCBL & ASSOC PPTYS INC20,849$529Kshares
CAGCONAGRA BRANDS INC25,200$516Kshares
ASPEN INSURANCE HOLDINGS-AASPEN INSURANCE HOLDINGS-A15,791$497Kshares
OMDAOMADA HEALTH INC26,055$477Kshares
MNTNMNTN INC20,000$437Kshares
WALGREENS BOOTS ALLIANCE INCWALGREENS BOOTS ALLIANCE INC37,800$434Kshares
RNWRENEW ENERGY GLOBAL PLC60,264$416Kshares
LWLAMB WESTON HLDGS INC7,600$394Kshares
CCOICOGENT COMM HOLDINGS INC6,483$313Kshares
CAICARIS LIFE SCIENCES INC10,000$267Kshares
FARO TECHNOLOGIES INCFARO TECHNOLOGIES INC5,881$258Kshares
MCGAUYORKVILLE ACQUISITION CORP.22,010$248Kshares
TEAMATLASSIAN CORPORATION1,190$242Kshares
TRIPTRIPADVISOR INC17,991$235Kshares
DMY SQUARED TECHNOLOGY GROUPDMY SQUARED TECHNOLOGY GROUP50,000$95.5Kshares
Spring Valley Acquisition C…Spring Valley Acquisition Corp II300,000$41.1Kshares
ALPHAVEST ACQUISITION CORPALPHAVEST ACQUISITION CORP125,000$37.5Kshares
DISTOKEN ACQUISITION CORP (…DISTOKEN ACQUISITION CORP (U.S.) …123,504$34.7Kshares
Distoken Acquisition CorpDistoken Acquisition Corp123,504$13.7Kshares
EMCWFEMBRACE CHANGE ACQUISITION COR209,250$4.18Kshares
HYGISHARES TR5$403shares
IMMATICS N.VIMMATICS N.V40,065$24shares

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 0001357550-25-000038 base2025-11-14acceptance time not in the bulk data set
13F-HR/A 0001357550-26-000009 addednew holdings2026-02-17acceptance time not in the bulk data set
13F-HR/A 0001357550-26-000021 addednew holdings2026-05-15acceptance time not in the bulk data set