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Livermore
Livermore
ZHEN

CSS LLC

SEC CIK
0001103646
Latest filing
Aug 14, 2026

Holdings in Q1 2026

Holdings as of Mar 31, 2026, filed May 15, 2026. Long positions only; changes compare share counts with Q4 2025.

Institution overview
Positions
739
−12 vs. Q4 2025
Portfolio value
$1.80B
+$28.5M (+1.6%) vs. Q4 2025
Filed
May 15, 2026
SEC
Holdings of CSS LLC in Q1 2026
SecurityClassSharesValue% of portfolioShare changeActionHistory
Wolfspeed, Inc.977852AP7NOTE 2.500% 6/1–$13.5M0.8%–––
MARA Holdings, Inc.565788AD8NOTE 2.125% 9/0–$14.0M0.8%–––
KIM.PNKimco Realty CorpDP CV CL N 7.25%237,114$14.2M0.8%+36,941+18.5%AddedHistory
Celcuity Inc.15102KAA8NOTE 2.750% 8/0–$15.4M0.9%–––
Cloudflare, Inc.18915MAC1NOTE 8/1–$15.7M0.9%–New–
Snowflake Inc.833445AD1NOTE 10/0–$15.9M0.9%–New–
Apollo Global Mgmt Inc03769M304SER A MAND CNV277,318$16.3M0.9%+264,653+2,089.6%Added–
BridgeBio Pharma, Inc.10806XAJ1NOTE 1.750% 3/0–$17.1M1.0%–New–
IAUiShares Gold TrustETF200,040$17.6M1.0%+2,780+1.4%AddedHistory
Stride, Inc.86333MAA6NOTE 1.125% 9/0–$17.8M1.0%–––
Akamai Technologies Inc00971TAN1NOTE 1.125% 2/1–$17.9M1.0%–––
ALB.PAAlbemarle Corp7.25% DEP SHS A250,421$17.9M1.0%+200,578+402.4%AddedHistory
CORZWCore Scientific, Inc.*W EXP 01/23/2022,083,119$18.2M1.0%+51,168+2.5%AddedHistory
Equinox Gold Corp.29446YAC0NOTE 4.750%10/1–$19.1M1.1%–––
Vanguard S&P 500 ETF922908363ETF32,210$19.2M1.1%+560+1.8%Added–
Invesco Exchange Traded FD T46137V357S&P500 EQL WGT103,482$19.9M1.1%+8,640+9.1%Added–
Alnylam Pharmaceuticals, Inc.02043QAB3NOTE 1.000% 9/1–$23.9M1.3%–New–
Centerpoint Energy Inc15189TBD8NOTE 4.250% 8/1–$24.9M1.4%–New–
NEE.PVNextera Energy IncUNIT 02/15/2029540,739$27.2M1.5%+540,739NewHistory
Peabody Engr Corp704551AD2NOTE 3.250% 3/0–$37.8M2.1%–––
Transocean Ltd.893830BW8DEB 4.625% 9/3–$49.5M2.8%–––
Live Nation Entertainment IN538034BA6NOTE 3.125% 1/1–$49.9M2.8%–––
Jazz Investments I Ltd472145AF8NOTE 2.000% 6/1–$63.9M3.6%–––
EchoStar CORP278768AB2NOTE 3.875%11/3–$146.6M8.2%–––
Lumentum Hldgs Inc55024UAF6NOTE 0.500% 6/1–$216.5M12.0%–––
SQFTWPresidio Property Trust, Inc.*W EXP 01/24/20255,158––00.0%UnchangedHistory
Bitcoin Depot IN09174P113EQUITY WRT93,402––−560,412−85.7%Reduced–
RVMDWRevolution Medicines, Inc.*W EXP 12/17/20217,505––−1,940−10.0%ReducedHistory
DMIIRDrugs Made In America Acquisition II Corp.RIGHT 09/16/203080,600––00.0%UnchangedHistory
RTS/Inflection Point Acquisition Corp III EXP03/0G47875110COM43,070––00.0%Unchanged–
DMAARDrugs Made In America Acquisition Corp.RIGHT 10/15/202931,250––00.0%UnchangedHistory
Jackson Acquisition Co IIG4992A136RIGHT 99/99/999920,000––00.0%Unchanged–
KFIIRK&F Growth Acquisition Corp. IIRIGHT 08/29/203113,960––00.0%UnchangedHistory
Mountain Lake Acquisition Corp.G6301B127RIGHT 11/15/202835,056––00.0%Unchanged–
CHPGRChampionsGate Acquisition CorpRIGHT 05/14/203034,142––00.0%UnchangedHistory
FERARFifth Era Acquisition Corp IRIGHT 02/21/203033,473––00.0%UnchangedHistory
OYSEROyster Enterprises II Acquisition CorpRIGHT 05/22/203066,340––00.0%UnchangedHistory
Gabelli Equity Tr Inc362397226RIGHT 04/14/202617,837––+17,837New–
IRHORIron Horse Acquisition II Corp.RIGHT 07/11/203073,810––+73,810NewHistory

Options (185)

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 185 by value.

Option positions of CSS LLC in Q1 2026
SecurityClassPutsCalls
GMEGameStop Corp.Stock$28.0M–
SPYSPDR S&P 500 ETF TrustETF$2.60M$14.6M
GLDSPDR Gold TrustETF$16.4M$645.4K
iShares Tr46428743220 YR TR BD ETF$11.3M$4.33M
HOLXHologic IncCOM$12.8M$1.89M
MSTRStrategy IncStock$14.2M$124.8K
PENPenumbra IncCOM$12.2M$295.5K
MASIMasimo CorpCOM$17.8K$9.59M
Xerox Holdings Corp98421M956PUT$9.24M–
AALAmerican Airlines Group Inc.Stock$6.25M–
ECHOEchoStar CORPCL A$5.29M$234.1K
FOURShift4 Payments, Inc.CL A$4.71M$586.0K
DBRGDigitalBridge Group, Inc.CL A NEW$4.74M–
NIONIO Inc.ADR$4.58M–
NVDANVIDIA CorpStock–$3.51M
APLSApellis Pharmaceuticals, Inc.COM$1.81M$1.58M
SMCISuper Micro Computer, Inc.Stock$3.33M–
MSFTMicrosoft CorpStock–$3.33M
EAElectronic Arts Inc.COM$815.5K$2.32M
RIVNRivian Automotive, Inc.Stock$3.06M–
iShares Russell 2000 ETF464287655ETF$2.98M–
State Street Financial Select Sector SPDR ETF81369Y605ETF$493.7K$2.47M
MARAMARA Holdings, Inc.COM$2.91M–
iShares Iboxx $ Investment Grade Corporate Bond ETF464287242ETF$2.72M–
CNTACentessa Pharmaceuticals plcSPONSORED ADS$393.2K$2.07M
Becton Dickinson & Co075887959PUT$2.04M–
VanEck Semiconductor ETF92189F676ETF–$1.96M
NBISNebius Group N.V.Stock$1.92M–
COINCoinbase Global, Inc.COM CL A$1.71M$174.6K
HIMSHims & Hers Health, Inc.Stock$1.81M–
SEMRSEMrush Holdings, Inc.CL A COM$688.9K$1.07M
PLTRPalantir Technologies Inc.Stock$1.39M$365.7K
IBITiShares Bitcoin Trust ETFETF$307.4K$1.31M
iShares Tr464288513IBOXX HI YD ETF$1.59M–
UPSUnited Parcel Service IncStock–$1.57M
State Street Energy Select Sector SPDR ETF81369Y506ETF$1.53M–
iShares Tr4642874407-10 YR TRSY BD$983.0K$477.2K
Invesco Exchange Traded FD T46137V357S&P500 EQL WGT–$1.44M
AMCAMC Entertainment Holdings, Inc.CL A NEW$1.18M$103.1K
AAOIApplied Optoelectronics, Inc.COM$1.27M–
TSLATesla, Inc.Stock$1.23M–
SLViShares Silver TrustETF$1.23M–
PLUGPlug Power IncStock$1.21M$2.94K
WWayfair Inc.CL A$1.20M–
ASMLASML Holding NVADR$1.19M–
ETNEaton Corp plcStock$1.18M–
CTLPCantaloupe, Inc.COM$1.16M$15.1K
METAMeta Platforms, Inc.Stock–$1.14M
CWANClearwater Analytics Holdings, Inc.CL A$1.13M$2.37K
CEGConstellation Energy CorpStock$1.12M–
ALSumisho Air Lease CorpCL A$1.10M–
BTUPeabody Energy CorpCOM$995.1K–
BMYBristol Myers Squibb CoStock–$988.6K
AMDAdvanced Micro Devices IncStock$976.5K–
CRWVCoreWeave, Inc.Stock$968.4K–
DDOGDatadog, Inc.CL A COM$944.4K–
GENGen Digital Inc.Stock–$941.5K
APLDApplied Digital Corp.COM NEW$854.6K$59.4K
SMSM Energy CoCOM–$907.3K
IRENIREN LtdORDINARY SHARES$857.0K–
MRNAModerna, Inc.Stock$812.8K–
FASTFastenal CoStock$812.0K–
RUNSunrun Inc.COM$808.2K–
NVTSNavitas Semiconductor CorpCOM$792.8K–
RIOTRiot Platforms, Inc.COM$786.1K–
BHFBrighthouse Financial, Inc.COM–$754.5K
QSQuantumScape CorpCOM CL A$738.2K–
TGTTarget CorpStock–$727.2K
CIFRCipher Digital Inc.COM$597.2K$128.7K
AVGOBroadcom Inc.Stock$711.9K–
RVMDRevolution Medicines, Inc.COM$301.5K$408.4K
PCGPG&E CorpStock$704.6K–
WIXWix.com Ltd.SHS$702.5K–
AFRMAffirm Holdings, Inc.COM CL A$366.6K$320.7K
HTZHertz Global Holdings, IncCOM NEW$675.8K–
ZIMZIM Integrated Shipping Services Ltd.SHS$661.4K–
State Street SPDR S&P Regional Banking ETF78464A698ETF$651.5K–
IONQIonQ, Inc.COM$648.7K–
Xerox Holdings Corp98421M906CALL–$645.0K
CSGSCSG Systems International IncCOM$623.5K–
STEMStem, Inc.COM NEW$618.8K–
PTONPeloton Interactive, Inc.CL A COM$615.6K–
LYVLive Nation Entertainment, Inc.COM$610.0K–
CFGCitizens Financial Group IncCOM–$599.7K
ENVXEnovix CorpCOM$582.8K–
PCORProcore Technologies, Inc.COM$570.0K–
iShares Tr464287234MSCI EMG MKT ETF–$567.9K
CRMSalesforce, Inc.Stock–$560.0K
COFCapital One Financial CorpStock–$547.3K
ACLXArcellx, Inc.COMMON STOCK$424.8K$114.8K
OPCHOption Care Health, Inc.COM NEW$538.4K–
AIC3.ai, Inc.Stock$358.7K$168.4K
ULTAUlta Beauty, Inc.Stock$522.7K–
AESAES CorpStock$88.8K$431.2K
SLBSLB LimitedStock$513.9K–
JOBYJoby Aviation, Inc.COMMON STOCK$513.8K–
LMNDLemonade, Inc.Stock$501.4K–
CNCCentene CorpStock$491.1K–
CBChubb LtdStock–$488.9K
CTGOContango Silver & Gold Inc.COM$452.5K–

Sold out since Q4 2025 (200)

Positions held at the end of Q4 2025 that are gone from this filing.

The largest 100 of 200 by value last quarter.

Positions of CSS LLC sold out since Q4 2025
SecurityClassShares in Q4 2025Value in Q4 2025% of portfolio in Q4 2025History
Ionis Pharmaceuticals Inc462222AD2NOTE 4/0–$61.5M3.5%–
Lumentum Hldgs Inc55024UAH2NOTE 1.500%12/1–$39.9M2.3%–
BridgeBio Pharma, Inc.10806XAD4NOTE 2.250% 2/0–$29.8M1.7%–
Mannkind Corp56400PAQ5NOTE 2.500% 3/0–$15.9M0.9%–
Collegium Pharmaceutical, Inc19459JAC8NOTE 2.875% 2/1–$14.8M0.8%–
Ventas Rlty Ltd Partnership92277GAZ0NOTE 3.750% 6/0–$14.6M0.8%–
Wayfair Inc.94419LAR2NOTE 3.500%11/1–$11.8M0.7%–
Cipher Mining Inc17253JAA4NOTE 1.750% 5/1–$10.5M0.6%–
Ford MTR Co Del345370CZ1NOTE 3/1–$9.67M0.5%–
SOFISoFi Technologies, Inc.Stock358,863$9.40M0.5%History
Alliant Energy Corp018802AC2NOTE 3.875% 3/1–$7.89M0.4%–
IRHOUIron Horse Acquisition II Corp.UNIT 07/11/2030738,100$7.34M0.4%History
SPYSPDR S&P 500 ETF TrustETF10,646$7.26M0.4%History
Guess Inc401617AF2NOTE 3.750% 4/1–$6.96M0.4%–
ITHAUITHAX Acquisition Corp IIIUNIT 11/17/2030593,710$5.92M0.3%History
Ionis Pharmaceuticals Inc462222AF7NOTE 1.750% 6/1–$5.44M0.3%–
Strategy Inc594972AL5NOTE 0.875% 3/1–$5.17M0.3%–
Enovis CORP194014AB2NOTE 3.875%10/1–$4.87M0.3%–
Exact Sciences Corp30063PAC9NOTE 0.375% 3/0–$4.71M0.3%–
Strategy Inc594972AQ4NOTE 0.625% 9/1–$4.57M0.3%–
Rivian Automotive, Inc.76954AAB9NOTE 4.625% 3/1–$4.57M0.3%–
MESHUMeshflow Acquisition CorpUNIT 11/19/2030446,548$4.47M0.3%History
Strategy Inc594972AJ0NOTE 0.625% 3/1–$4.30M0.2%–
QXO.PBQXO, Inc.5.50 DEP PFD67,921$3.76M0.2%History
Penn Natl Gaming Inc707569AU3NOTE 2.750% 5/1–$3.50M0.2%–
Applied Optoelectronics, Inc.03823UAE2NOTE 2.750% 1/1–$3.18M0.2%–
Cyberark Software LtdM2682V108SHS7,094$3.16M0.2%–
PSKYParamount Skydance CorpCOM CL B224,279$3.01M0.2%History
Innoviva, Inc.45781MAD3NOTE 2.125% 3/1–$3.00M0.2%–
CDTXCidara Therapeutics, Inc.COM NEW13,500$2.98M0.2%History
AXONAxon Enterprise, Inc.COM5,053$2.87M0.2%History
SMTCSemtech CorpStock38,535$2.84M0.2%History
Riot Platforms, Inc.767292AB1NOTE 0.750% 1/1–$2.82M0.2%–
DAYDayforce, Inc.COM39,799$2.75M0.2%History
Coinbase Global, Inc.19260QAF4NOTE 0.250% 4/0–$2.58M0.1%–
ADACUAmerican Drive Acquisition CoUNIT 12/04/2030250,000$2.49M0.1%History
CMAComerica IncCOM27,879$2.42M0.1%History
Curevac N VN2451R105COM506,847$2.29M0.1%–
MARA Holdings, Inc.565788AH9NOTE 6/0–$2.10M0.1%–
Exact Sciences Corp30063PAB1NOTE 0.375% 3/1–$1.57M0.1%–
NOVTUNovanta IncUNIT 11/01/202828,523$1.56M0.1%History
NEENextera Energy IncStock18,995$1.52M0.1%History
PureCycle Technologies, Inc.74623VAB9NOTE 7.250% 8/1–$1.48M0.1%–
CIOCity Office REIT, Inc.COM207,013$1.45M0.1%History
Evergy, Inc.30034WAD8NOTE 4.500%12/1–$1.32M0.1%–
USFDUS Foods Holding Corp.COM17,362$1.31M0.1%History
FHIFederated Hermes, Inc.CL B24,470$1.27M0.1%History
Peloton Interactive, Inc.70614WAD2NOTE 5.500%12/0–$1.27M0.1%–
AVDLAvadel Pharmaceuticals PLCStock59,037$1.27M0.1%History
Chesapeake Energy Corp165167180*W EXP 03/01/20215,149$1.24M0.1%–
EXASExact Sciences CorpCOM11,946$1.21M0.1%History
BNTXBioNTech SESPONSORED ADS12,161$1.16M0.1%History
FYBRFrontier Communications Parent, Inc.COM27,500$1.05M0.1%History
HIGHartford Insurance Group, Inc.Stock7,499$1.03M0.1%History
MOAltria Group, Inc.Stock17,489$1.01M0.1%History
THSTreeHouse Foods, Inc.COM42,311$998.1K0.1%History
VHCPUVine Hill Capital Investment Corp. IIUNIT 11/25/203098,000$982.1K0.1%History
SOSouthern CoStock11,156$972.8K0.1%History
BFINBankFinancial CORPCOM80,749$969.0K0.1%History
ATXSAstria Therapeutics, Inc.COM67,422$882.6K<0.1%History
Tandem Diabetes Care Inc875372AD6NOTE 1.500% 3/1–$872.8K<0.1%–
GOOGLAlphabet Inc.Stock2,730$854.5K<0.1%History
LPCVULaunchpad Cadenza Acquisition Corp IUNIT 12/15/203084,208$840.4K<0.1%History
MBCNMiddlefield Banc CorpCOM NEW23,507$811.9K<0.1%History
TDWDUTailwind 2.0 Acquisition Corp.UNIT 11/07/203079,086$795.6K<0.1%History
Green Plains Inc.393222AK0NOTE 2.250% 3/1–$791.8K<0.1%–
American Centy ETF Tr025072802INTL SMCP VLU8,320$781.8K<0.1%–
FSFGFirst Savings Financial Group, Inc.COM24,113$768.2K<0.1%History
OZKBank OZKCOM14,527$668.5K<0.1%History
REVGREV Group, Inc.COM10,943$665.4K<0.1%History
AMATApplied Materials IncStock2,560$657.9K<0.1%History
FTWPresidio Production CoCL A ORD SHS61,326$643.3K<0.1%History
PEGAPegasystems IncCOM10,440$623.5K<0.1%History
Avidity Biosciences, Inc.05370A108COM8,500$613.1K<0.1%–
CSIQCanadian Solar Inc.COM25,437$604.6K<0.1%History
VEEVVeeva Systems IncStock2,670$596.0K<0.1%History
TTCToro CoCOM7,500$590.4K<0.1%History
Brookfield Business PartnersG16234109UNIT LTD L P16,759$589.9K<0.1%–
CRAQCal Redwood Acquisition Corp.COM CL A57,100$579.0K<0.1%History
SHCOSoho House & Co Inc.COM CL A63,611$570.0K<0.1%History
AMCRAmcor plcORD68,284$569.5K<0.1%History
RPRXRoyalty Pharma plcSHS CLASS A14,520$561.1K<0.1%History
BKHBlack Hills CorpCOM8,037$557.9K<0.1%History
SNVSynovus Financial CorpCOM NEW11,084$554.8K<0.1%History
TEXTerex CorpStock10,197$544.3K<0.1%History
CNXCConcentrix CorpStock12,990$540.1K<0.1%History
WisdomTree Tr97717W851JAPN HEDGE EQT3,740$539.2K<0.1%–
TGNATegna IncCOM27,667$537.0K<0.1%History
LUNRIntuitive Machines, Inc.CLASS A COM32,918$534.3K<0.1%History
VRSNVerisign IncCOM2,100$510.2K<0.1%History
MOHMolina Healthcare, Inc.COM2,821$489.6K<0.1%History
LHLabcorp Holdings Inc.Stock1,950$489.2K<0.1%History
CORCencora, Inc.Stock1,430$483.0K<0.1%History
NTNXNutanix, Inc.Stock8,870$458.5K<0.1%History
GLGlobe Life Inc.COM3,270$457.3K<0.1%History
KBHKB HomeCOM8,060$454.7K<0.1%History
LKQLKQ CorpCOM14,790$446.7K<0.1%History
PSNParsons CorpCOM7,120$440.0K<0.1%History
RRCRange Resources CorpCOM12,427$438.2K<0.1%History
DOCUDocuSign, Inc.Stock6,393$437.3K<0.1%History