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Livermore
Livermore
ZHEN

Simplex Trading, LLC

SEC CIK
0001488542
Latest filing
Aug 12, 2026

Holdings in Q1 2024

Holdings as of Mar 31, 2024, filed Apr 25, 2024. Long positions only; changes compare share counts with Q4 2023.

Institution overview
Positions
2,382
−50 vs. Q4 2023
Portfolio value
$3.43B
+$218.7M (+6.8%) vs. Q4 2023
Filed
Apr 25, 2024
SEC
Holdings of Simplex Trading, LLC in Q1 2024
SecurityClassSharesValue% of portfolioShare changeActionHistory
ELMDElectromed, Inc.Stock14$00.0%+14NewHistory
iShares Inc464286756MSCI SWEDEN ETF3$00.0%−386−99.2%Reduced–
MYEMyers Industries IncCOM24$00.0%−26−52.0%ReducedHistory
ALNTAllient IncCOM4$00.0%+4NewHistory
OBKOrigin Bancorp, Inc.COM30$00.0%−42−58.3%ReducedHistory
TIMBTim S.A.SPONSORED ADR34$00.0%−66−66.0%ReducedHistory
FSVFirstService CorpCOM4$00.0%+4NewHistory
PNNTPennantpark Investment CorpCOM142$00.0%+142NewHistory
Capital Group Growth ETF14020G101SHS CREAT UNIT24$00.0%+24New–
HWCHancock Whitney CorpCOM15$00.0%+15NewHistory
XPERXperi Inc.COMMON STOCK5$00.0%−14,000−100.0%ReducedHistory
JJSFJ&J Snack Foods CorpCOM6$00.0%+6NewHistory
NNINelnet IncCL A6$00.0%+6NewHistory
LNSRLENSAR, Inc.COM202$00.0%+202NewHistory
CSTLCastle Biosciences IncCOM6$00.0%+6NewHistory
Invesco Exchange Traded FD T46137V258S&P500 PUR VAL9$00.0%+9New–
iShares Tr464287770U.S. FIN SVC ETF15$00.0%−720−98.0%ReducedConverted for a 3-for-1 split–
LASRNlight, Inc.COM76$00.0%−4,793−98.4%ReducedHistory
iShares Tr46435U853BROAD USD HIGH7$00.0%+7New–
ENICEnel Chile S.A.SPONSORED ADR148$00.0%−59−28.5%ReducedHistory
NMFCNew Mountain Finance CorpCOM65$00.0%−524−89.0%ReducedHistory
LTHLife Time Group Holdings, Inc.COMMON STOCK55$00.0%−3,480−98.4%ReducedHistory
CLPRClipper Realty Inc.COM36$00.0%+36NewHistory
CBANColony Bankcorp IncCOM19$00.0%−80−80.8%ReducedHistory
CVGICommercial Vehicle Group, Inc.COM32$00.0%+32NewHistory
CVUCpi Aerostructures IncCOM NEW84$00.0%+84NewHistory
CPSHCPS Technologies CorpCOM19$00.0%+19NewHistory
CURICuriosityStream Inc.COM CL A200$00.0%+200NewHistory
CTKBCytek Biosciences, Inc.COM139$00.0%+128+1,163.6%AddedHistory
CTSOCytosorbents CorpCOM NEW620$00.0%−839−57.5%ReducedHistory
DHXDhi Group, Inc.COM369$00.0%+369NewHistory
DDLDingdong (Cayman) LtdADS594$00.0%+594NewHistory
FISIFinancial Institutions IncCOM50$00.0%+50NewHistory
FKWLFranklin Wireless CorpCOM110$00.0%−3,686−97.1%ReducedHistory
GAIAGaia, IncCL A246$00.0%−1,284−83.9%ReducedHistory
INTZIntrusion IncCOM9$00.0%+0+2.3%AddedConverted for a 1-for-20 splitHistory
IZEAIZEA Worldwide, Inc.COM NEW430$00.0%+430NewHistory
KLTRKaltura IncCOM142$00.0%+142NewHistory
LOOPLoop Industries, Inc.COM152$00.0%+30+24.6%AddedHistory
MCHXMarchex IncCL B28$00.0%+28NewHistory
MNOVMedicinova IncCOM NEW441$00.0%+223+102.3%AddedHistory
MISTMilestone Pharmaceuticals Inc.COM478$00.0%−608−56.0%ReducedHistory
NNVCNanoviricides, Inc.COM136$00.0%−2,312−94.4%ReducedHistory
NGSNatural Gas Services Group IncCOM29$00.0%−75−72.1%ReducedHistory
NAUTNautilus Biotechnology, Inc.COM216$00.0%−620−74.2%ReducedHistory
NTWKNetsol Technologies IncCOM PAR $.00123$00.0%+23NewHistory
NREFNexPoint Real Estate Finance, Inc.COM43$00.0%−1,281−96.8%ReducedHistory
NBPNovaBridge BiosciencesSPONSORED ADS84$00.0%+80+2,000.0%AddedHistory
PEBOPeoples Bancorp IncCOM25$00.0%+25NewHistory
PLXProtalix BioTherapeutics, Inc.COM459$00.0%+459NewHistory
RVPRetractable Technologies IncCOM684$00.0%−11,143−94.2%ReducedHistory
SIEBSiebert Financial CorpCOM183$00.0%−520−74.0%ReducedHistory
SYSo-Young International Inc.SPONSORED ADS60$00.0%−144−70.6%ReducedHistory
SPRUSpruce Power Holding CorpCOM NEW80$00.0%−1,680−95.5%ReducedHistory
TEADTeads Holding Co.COM202$00.0%−269−57.1%ReducedHistory
TCXTucows IncCOM NEW53$00.0%+53NewHistory
UAMYUnited States Antimony CorpCOM360$00.0%−3,935−91.6%ReducedHistory
UVSPUnivest Financial CorpCOM26$00.0%+26NewHistory
USIOUsio, Inc.COM308$00.0%−140−31.3%ReducedHistory
VINPVinci Compass Investments Ltd.COM CL A21$00.0%−5−19.2%ReducedHistory
XNETXunlei LtdSPONSORED ADS6$00.0%−4,384−99.9%ReducedHistory
ORKAOruka Therapeutics, Inc.COM3$00.0%−97−97.0%ReducedHistory
AMRNAmarin Corp PLCSPONS ADR NEW580$00.0%−27,133−97.9%ReducedHistory
Applied Dna Sciences Inc03815U300COM489$00.0%+489New–
AQMSAqua Metals, Inc.COM751$00.0%+751NewHistory
ASXCAsensus Surgical, Inc.COM162$00.0%−84,338−99.8%ReducedHistory
BCELAtreca, Inc.CL A COM1$00.0%−99−99.0%ReducedHistory
GRNBarclays Bank PLCETN 4919$00.0%−453−96.0%ReducedHistory
CASACasa Systems IncCOM340$00.0%−60−15.0%ReducedHistory
CSSEChicken Soup for the Soul Entertainment, Inc.CL A3,043$00.0%+266+9.6%AddedHistory
CDTXCidara Therapeutics, Inc.COM525$00.0%+525NewHistory
CNTBConnect Biopharma Holdings LtdADS81$00.0%+81NewHistory
CONXCONX Corp.COM CL A75$00.0%−296−79.8%ReducedHistory
Direxion Shs ETF Tr25460G617HYDROGEN ETF17$00.0%+17New–
Direxion Shs ETF Tr25460G625DAILY CLUD BUL2X50$00.0%+50New–
EMKREmcore CorpCOM NEW147$00.0%+147NewHistory
AIFUAIFU Inc.SPONSORED ADR7$00.0%−7,119−99.9%ReducedHistory
FLNTFluent, Inc.COM183$00.0%−53−22.5%ReducedHistory
DMRADamora Therapeutics, Inc.COM547$00.0%+468+592.4%AddedHistory
GUREGulf Resources, Inc.COM197$00.0%+147+294.0%AddedHistory
HBIOHarvard Bioscience IncCOM101$00.0%−1,152−91.9%ReducedHistory
HTBKHeritage Commerce CorpCOM5$00.0%−100−95.2%ReducedHistory
IVACIntevac IncCOM19$00.0%−184−90.6%ReducedHistory
JHXJames Hardie Industries plcSPONSORED ADR7$00.0%+7NewHistory
KZRKezar Life Sciences, Inc.COM933$00.0%−2,497−72.8%ReducedHistory
KULRKULR Technology Group, Inc.Common Stock1,200$00.0%+1,000+500.0%AddedHistory
MRINMarin Software IncCOM NEW884$00.0%−4,242−82.8%ReducedHistory
MMLPMartin Midstream Partners L.P.UNIT L P INT247$00.0%−206−45.5%ReducedHistory
NGMNGM Biopharmaceuticals IncCOM28$00.0%−119−81.0%ReducedHistory
NSTGNS Wind Down Co., Inc.COM200$00.0%−32,283−99.4%ReducedHistory
NSTBNorthern Star Investment Corp. IICOM CLASS A1$00.0%00.0%UnchangedHistory
OFSOFS Capital CorpCOM58$00.0%+58NewHistory
TURN180 Degree Capital Corp.COM NEW146$00.0%+146NewHistory
VIVSVivoSim Labs, INC.COM NEW84$00.0%−3,510−97.7%ReducedHistory
OESXOrion Energy Systems, Inc.COM280$00.0%+280NewHistory
PROFProfound Medical Corp.COM NEW87$00.0%+87NewHistory
ProShares Tr74348A459ULTSHT MSCI JAP34$00.0%+34New–
SANWS&W Seed CoCOM258$00.0%+67+35.1%AddedHistory
TOURTuniu CorpSPONSORED ADS A1,000$00.0%+1,000NewHistory
UNLUnited States 12 Month Natural Gas Fund, LPUNIT BEN INT100$00.0%+100NewHistory

Options (6,475)

Puts and calls in the same filing. Amounts are the market value of the underlying shares, which is what 13F reports.

The largest 100 of 6,475 by value.

Option positions of Simplex Trading, LLC in Q1 2024
SecurityClassPutsCalls
SPDR S&P 500 ETF Tr78462F953PUT$30.6B–
SPDR S&P 500 ETF Tr78462F903CALL–$10.1B
Invesco QQQ Tr46090E953PUT$7.82B–
NVIDIA Corporation67066G904CALL–$6.78B
NVIDIA Corporation67066G954PUT$5.76B–
iShares Tr464287957PUT$5.37B–
iShares Tr464287907CALL–$4.55B
Invesco QQQ Tr46090E903UNIT SER 1–$4.24B
Tesla Inc88160R951PUT$3.35B–
Apple Inc037833900CALL–$2.63B
Tesla Inc88160R901CALL–$2.39B
Facebook Inc30303M902CALL–$1.70B
Select Sector SPDR Tr81369Y956PUT$1.60B–
Amazon Com Inc023135906CALL–$1.54B
Apple Inc037833950PUT$1.43B–
Alphabet Inc02079K905CALL–$1.35B
Facebook Inc30303M952PUT$1.33B–
Microsoft Corp594918904CALL–$1.31B
Microsoft Corp594918954PUT$1.28B–
SPDR Gold Tr78463V907CALL–$1.15B
Select Sector SPDR Tr81369Y906CALL–$1.09B
Alphabet Inc02079K955PUT$1.05B–
Amazon Com Inc023135956PUT$923.1M–
SPDR Gold Tr78463V957GOLD SHS$897.2M–
Booking Holdings Inc09857L958PUT$839.5M–
Advanced Micro Devices Inc007903957PUT$803.8M–
Broadcom Inc11135F901CALL–$787.6M
SPDR Ser Tr78464A958PUT$735.6M–
MicroStrategy Inc594972908CALL–$724.9M
Advanced Micro Devices Inc007903907CALL–$705.5M
Super Micro Computer Inc86800U954PUT$678.2M–
Alibaba Group Hldg Ltd01609W902CALL–$649.5M
VanEck Vectors ETF Tr92189F902CALL–$641.8M
VanEck Vectors ETF Tr92189F952PUT$639.0M–
Broadcom Inc11135F951PUT$615.3M–
Netflix Inc64110L956PUT$596.6M–
Taiwan Semiconductor Mfg Ltd874039900CALL–$555.3M
MicroStrategy Inc594972958PUT$547.3M–
Costco WHSL Corp New22160K955PUT$543.8M–
Micron Technology Inc595112903CALL–$493.2M
SPDR Ser Tr78464A908CALL–$473.9M
iShares Tr464288955PUT$466.3M–
Costco WHSL Corp New22160K905CALL–$455.5M
Netflix Inc64110L906CALL–$451.2M
Super Micro Computer Inc86800U904CALL–$435.1M
Boeing Co097023905COM–$418.2M
Lilly Eli & Co532457908CALL–$381.2M
SPDR Dow Jones Indl Average78467X959PUT$380.7M–
Coinbase Global Inc19260Q957PUT$380.6M–
Micron Technology Inc595112953PUT$379.8M–
Taiwan Semiconductor Mfg Ltd874039950PUT$376.1M–
JPMorgan Chase & Co46625H905CALL–$375.7M
Coinbase Global Inc19260Q907CALL–$345.7M
Citigroup Inc172967904CALL–$339.8M
Lilly Eli & Co532457958PUT$330.6M–
Exxon Mobil Corp30231G902CALL–$316.9M
Disney Walt Co254687906CALL–$304.6M
Boeing Co097023955PUT$285.9M–
Berkshire Hathaway Inc Del084670902CALL–$271.0M
JPMorgan Chase & Co46625H955PUT$268.7M–
Adobe Systems Incorporated00724F901CALL–$267.9M
PayPal Hldgs Inc70450Y903CALL–$266.0M
Palo Alto Networks Inc697435905CALL–$262.1M
ASML Holding N VN07059900CALL–$258.3M
Salesforce Com Inc79466L902CALL–$257.3M
BK of America Corp060505954PUT$256.9M–
Salesforce Com Inc79466L952PUT$255.9M–
SPDR Dow Jones Indl Average78467X909CALL–$254.7M
Pinduoduo Inc722304902CALL–$253.0M
Goldman Sachs Group Inc38141G954PUT$252.5M–
Palo Alto Networks Inc697435955PUT$246.8M–
Adobe Systems Incorporated00724F951PUT$244.3M–
Disney Walt Co254687956PUT$237.6M–
Exxon Mobil Corp30231G952PUT$228.8M–
Chevron Corp New166764900CALL–$228.4M
CrowdStrike Hldgs Inc22788C955PUT$215.8M–
ASML Holding N VN07059950PUT$211.8M–
Qualcomm Inc747525903CALL–$208.7M
International Business Machs459200901CALL–$205.9M
Alibaba Group Hldg Ltd01609W952PUT$205.2M–
Uber Technologies Inc90353T900CALL–$204.2M
Oracle Corp68389X905CALL–$202.0M
Arm Holdings PLC042068905CALL–$193.2M
Uber Technologies Inc90353T950PUT$191.4M–
Pfizer Inc717081953PUT$186.5M–
Visa Inc92826C909CALL–$185.4M
Intel Corp458140900CALL–$183.9M
Intel Corp458140950PUT$181.8M–
PayPal Hldgs Inc70450Y953PUT$180.4M–
Goldman Sachs Group Inc38141G904CALL–$179.9M
Caterpillar Inc149123951PUT$178.0M–
Vanguard Index FDS922908959PUT$174.2M–
SPDR Ser Tr78468R907CALL–$174.1M
Pinduoduo Inc722304952PUT$173.6M–
Nike Inc654106953PUT$171.5M–
Chipotle Mexican Grill Inc169656955PUT$168.0M–
BK of America Corp060505904CALL–$167.1M
Citigroup Inc172967954PUT$166.1M–
iShares Silver Tr46428Q909CALL–$165.7M
Chipotle Mexican Grill Inc169656905CALL–$162.8M

Sold out since Q4 2023 (960)

Positions held at the end of Q4 2023 that are gone from this filing.

The largest 100 of 960 by value last quarter.

Positions of Simplex Trading, LLC sold out since Q4 2023
SecurityClassShares in Q4 2023Value in Q4 2023% of portfolio in Q4 2023History
CCitigroup IncStock1,075,290$55.3M1.7%History
State Street Utilities Select Sector SPDR ETF81369Y886ETF798,823$50.6M1.6%–
iShares Tr464287184CHINA LG-CAP ETF1,594,712$38.3M1.2%–
PGProcter & Gamble CoStock252,247$37.0M1.2%History
TSLATesla, Inc.Stock127,962$31.8M1.0%History
iShares Russell 2000 ETF464287655ETF132,945$26.7M0.8%–
DALDelta Air Lines, Inc.COM NEW534,529$21.5M0.7%History
State Street Technology Select Sector SPDR ETF81369Y803ETF109,307$21.0M0.7%–
GLDSPDR Gold TrustETF105,898$20.2M0.6%History
COINCoinbase Global, Inc.COM CL A113,097$19.7M0.6%History
WFCWells Fargo & CompanyStock352,816$17.4M0.5%History
FDXFedEx CorpStock66,578$16.8M0.5%History
ORCLOracle CorpStock151,474$16.0M0.5%History
iShares Tr464287234MSCI EMG MKT ETF340,959$13.7M0.4%–
State Street Consumer Staples Select Sector SPDR ETF81369Y308ETF174,797$12.6M0.4%–
XOMExxonMobil Holdings CorpCOM111,025$11.1M0.3%History
RTXRTX CorpStock129,990$10.9M0.3%History
MPCMarathon Petroleum CorpStock71,045$10.5M0.3%History
STZConstellation Brands, Inc.Stock42,827$10.4M0.3%History
APOApollo Global Management, Inc.COM101,840$9.49M0.3%History
ZZillow Group, Inc.CL C CAP STK162,285$9.39M0.3%History
TXNTexas Instruments IncStock51,516$8.78M0.3%History
BPBP PLCADR226,137$8.01M0.2%History
PGRProgressive CorpStock44,641$7.11M0.2%History
IMGNImmunoGen, Inc.COM211,467$6.27M0.2%History
SONYSony Group CorpSPONSORED ADR65,683$6.22M0.2%History
REGNRegeneron Pharmaceuticals, Inc.COM6,984$6.13M0.2%History
iShares Tr464288588MBS ETF64,585$6.08M0.2%–
PEverpure, Inc.CL A158,569$5.65M0.2%History
WMBWilliams Companies, Inc.COM154,923$5.39M0.2%History
PENNPENN Entertainment, Inc.COM205,989$5.36M0.2%History
PARPar Technology CorpCOM118,947$5.18M0.2%History
HSYHershey CoCOM27,729$5.17M0.2%History
LYFTLyft, Inc.CL A COM341,977$5.13M0.2%History
LINLinde PLCStock12,353$5.07M0.2%History
LNGCheniere Energy, Inc.COM NEW29,477$5.03M0.2%History
SGISomnigroup International Inc.COM97,818$4.99M0.2%History
PFSIPennyMac Financial Services, Inc.COM54,647$4.83M0.2%History
GKOSGLAUKOS CorpCOM60,734$4.83M0.2%History
iShares Tr46428743220 YR TR BD ETF48,567$4.80M0.1%–
VanEck ETF Trust92189F791JUNIOR GOLD MINE121,805$4.62M0.1%–
SUSuncor Energy IncStock143,978$4.61M0.1%History
GAPGap IncCOM218,460$4.57M0.1%History
ELVElevance Health, Inc.Stock9,178$4.33M0.1%History
KOCoca Cola CoStock71,584$4.22M0.1%History
MSTRStrategy IncStock6,632$4.19M0.1%History
CBChubb LtdStock18,348$4.15M0.1%History
LYBLyondellBasell Industries N.V.SHS - A -43,559$4.14M0.1%History
SAPSAP SEADR26,249$4.06M0.1%History
AYXAlteryx, Inc.COM CL A85,948$4.05M0.1%History
IQVIQVIA Holdings Inc.Stock16,813$3.89M0.1%History
WPCW. P. Carey Inc.COM59,991$3.89M0.1%History
ANSSAnsys IncCOM10,481$3.80M0.1%History
FIVNFive9, Inc.COM48,211$3.79M0.1%History
STNGScorpio Tankers Inc.SHS60,594$3.68M0.1%History
CHWYChewy, Inc.CL A151,125$3.57M0.1%History
ESTCElastic N.V.ORD SHS31,583$3.56M0.1%History
URIUnited Rentals, Inc.COM5,973$3.42M0.1%History
Vanguard Dividend Appreciation ETF921908844ETF19,906$3.39M0.1%–
UVXYProShares Trust IIULTRA VIX SHORT399,683$3.37M0.1%History
Vanguard Intl Equity Index F922042874FTSE EUROPE ETF51,722$3.33M0.1%–
AEMAgnico Eagle Mines LtdStock56,734$3.11M0.1%History
ADSKAutodesk, Inc.COM12,415$3.02M0.1%History
CWHCamping World Holdings, Inc.CL A114,273$3.00M0.1%History
ProShares Tr74347X864ULTRPRO S&P50053,990$2.96M0.1%–
DRIDarden Restaurants IncCOM17,747$2.92M0.1%History
MRTXMirati Therapeutics, Inc.COM49,585$2.91M0.1%History
BWXTBWX Technologies, Inc.COM37,536$2.88M0.1%History
NXSTNexstar Media Group, Inc.COMMON STOCK18,348$2.88M0.1%History
USBUS Bancorp DECOM NEW64,345$2.78M0.1%History
EVHEvolent Health, Inc.CL A82,478$2.72M0.1%History
APLSApellis Pharmaceuticals, Inc.COM44,954$2.69M0.1%History
MBLYMobileye Global Inc.Stock62,026$2.69M0.1%History
GGALGrupo Financiero Galicia SASPONSORED ADR155,337$2.68M0.1%History
TXRHTexas Roadhouse, Inc.COM21,521$2.63M0.1%History
ABBVAbbVie Inc.Stock16,776$2.60M0.1%History
KBRKBR, Inc.COM46,315$2.57M0.1%History
COPConocoPhillipsStock21,936$2.55M0.1%History
NVSNovartis AGADR24,703$2.49M0.1%History
ZMZoom Communications, Inc.Stock34,533$2.48M0.1%History
FNFFidelity National Financial, Inc.COM SHS47,803$2.44M0.1%History
AFLAflac IncStock26,134$2.16M0.1%History
MLTXMoonLake ImmunotherapeuticsCLASS A ORD35,179$2.12M0.1%History
BCBrunswick CorpCOM21,625$2.09M0.1%History
MARMarriott International IncStock9,260$2.09M0.1%History
CMGChipotle Mexican Grill IncCOM871$1.99M0.1%History
LTHMLivent Corp.COM107,125$1.93M0.1%History
HLFHerbalife Ltd.COM SHS125,734$1.92M0.1%History
BMAMacro Bank Inc.SPON ADR B66,834$1.92M0.1%History
DGDollar General CorpCOM13,991$1.90M0.1%History
MGMMGM Resorts InternationalStock41,879$1.87M0.1%History
State Street Industrial Select Sector SPDR ETF81369Y704ETF16,233$1.85M0.1%–
SPDR Index Shs FDS78463X202ST STR EU 50 ETF38,373$1.83M0.1%–
LMTLockheed Martin CorpStock3,946$1.79M0.1%History
PODDInsulet CorpStock8,117$1.76M0.1%History
Liberty Media Corp531229789Stock61,217$1.76M0.1%–
IEPIcahn Enterprises L.P.DEPOSITARY UNIT102,125$1.75M0.1%History
RPDRapid7, Inc.COM29,435$1.68M0.1%History
PIImpinj IncCOM17,748$1.60M<0.1%History
PEBPebblebrook Hotel TrustCOM99,806$1.59M<0.1%History