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CSS LLC

SEC CIK
0001103646
Latest filing
Aug 14, 2026

Holdings in Q1 2021

Holdings as of Mar 31, 2021, filed May 17, 2021. Long positions only.

Institution overview
Positions
704
No 13F data for Q4 2020
Portfolio value
$1.86B
No 13F data for Q4 2020
Filed
May 17, 2021
SEC

Livermore's 13F data starts with Q1 2021, so this quarter has no previous quarter to compare with and changes are not shown.

Holdings of CSS LLC in Q1 2021
SecurityClassSharesValue% of portfolioShare changeActionHistory
Wayfair Inc.94419LAD3NOTE 1.125%11/0–$82.7M4.5%–––
Dexcom Inc252131AH0NOTE 0.750%12/0–$74.9M4.0%–––
AALAmerican Airlines Group Inc.Stock2,778,370$66.4M3.6%––History
Colfax Corp194014205UNIT 01/15/2022T343,318$62.0M3.3%–––
GFL Environmental Inc.36168Q120UNIT 99/99/9999T699,732$57.2M3.1%–––
PG&E Corp69331C140UNIT 99/99/9999450,276$51.6M2.8%–––
Nextera Energy Inc65339F796UNIT 09/01/2022S843,111$48.6M2.6%–––
Zillow Group, Inc.98954MAH4NOTE 2.750% 5/1–$41.1M2.2%–––
Chegg, Inc163092AD1NOTE 0.125% 3/1–$38.2M2.1%–––
Square Inc852234AD5NOTE 0.500% 5/1–$32.9M1.8%–––
Liberty Media Corp Del530715AN1DEB 3.500% 1/1–$29.6M1.6%–––
Verint Sys Inc92343XAA8NOTE 1.500% 6/0–$29.2M1.6%–––
Realpage Inc75606NAC3NOTE 1.500% 5/1–$28.1M1.5%–––
Istar Inc45031UCB5NOTE 3.125% 9/1–$21.9M1.2%–––
II-VI Inc902104AB4NOTE 0.250% 9/0–$20.6M1.1%–––
Transocean Ltd.893830BT5DEB 4.000%12/1–$18.1M1.0%–––
TSLATesla, Inc.Stock26,368$17.6M0.9%––History
Novavax Inc670002AB0NOTE 3.750% 2/0–$17.5M0.9%–––
Rambus Inc750917AG1NOTE 1.375% 2/0–$16.6M0.9%–––
Zynga Inc98986TAB4NOTE 0.250% 6/0–$15.8M0.9%–––
Guess Inc401617AD7NOTE 2.000% 4/1–$15.3M0.8%–––
Atlas Air Worldwide Hldgs IN049164BH8NOTE 2.250% 6/0–$15.0M0.8%–––
Avaya Hldgs Corp05351XAB7NOTE 2.250% 6/1–$12.0M0.6%–––
Two HBRS Invt Corp90187BAB7NOTE 6.250% 1/1–$12.0M0.6%–––
Workday, Inc.98138HAF8NOTE 0.250%10/0–$11.8M0.6%–––
Ironwood Pharmaceuticals Inc46333XAD0DBCV 2.250% 6/1–$10.9M0.6%–––
HMS Hldgs Corp40425J101COM283,266$10.5M0.6%–––
Hannon Armstrong Sust Infr C41068XAB6NOTE 4.125% 9/0–$9.60M0.5%–––
iShares Russell 1000 Value ETF464287598ETF59,900$9.08M0.5%–––
PEOAdams Natural Resources Fund, Inc.COM582,259$8.56M0.5%––History
Coupa Software Inc22266LAC0NOTE 0.125% 6/1–$8.51M0.5%–––
EXEExpand Energy CorpCOM195,435$8.48M0.5%––History
Osi Systems Inc671044AD7NOTE 1.250% 9/0–$8.09M0.4%–––
PTC Therapeutics, Inc.69366JAB7NOTE 3.000% 8/1–$8.06M0.4%–––
Neogenomics Inc64049MAA8NOTE 1.250% 5/0–$8.05M0.4%–––
STEWSRH Total Return Fund, Inc.COM629,811$7.92M0.4%––History
Green Plains Inc.393222AK0NOTE 2.250% 3/1–$7.86M0.4%–––
Liberty Media Corp531229409COM A SIRIUSXM177,721$7.83M0.4%–––
Helix Energy Solutions Grp I42330PAK3NOTE 6.750% 2/1–$7.69M0.4%–––
Dycom Inds Inc267475AB7NOTE 0.750% 9/1–$7.28M0.4%–––
PCGPG&E CorpStock621,320$7.28M0.4%––History
MongoDB, Inc.60937PAD8NOTE 0.250% 1/1–$7.22M0.4%–––
Fluidigm Corp Del34385PAF5NOTE 5.250%12/0–$7.07M0.4%–––
iShares Tr46432F388MSCI USA VALUE66,600$6.82M0.4%–––
Fti Consulting, Inc302941AP4NOTE 2.000% 8/1–$6.59M0.4%–––
Air Transport Services Grp I00922RAB1NOTE 1.125%10/1–$6.52M0.4%–––
Inphi Corp45772FAC1NOTE 0.750% 9/0–$6.31M0.3%–––
Insight Enterprises Inc45765UAB9NOTE 0.750% 2/1–$6.27M0.3%–––
GDS Hldgs Ltd36165LAB4NOTE 2.000% 6/0–$6.23M0.3%–––
CZRCaesars Entertainment, Inc.COM69,012$6.04M0.3%––History
Greenbrier Cos Inc393657AK7NOTE 2.875% 2/0–$5.92M0.3%–––
Snap Inc83304AAB2NOTE 0.750% 8/0–$5.90M0.3%–––
Pluralsight Inc72941BAB2NOTE 0.375% 3/0–$5.90M0.3%–––
Thunder Bridge Cap Prtnrs II88605T209UNIT 02/15/2028588,942$5.83M0.3%–––
Realpage Inc75606NAB5NOTE 1.500%11/1–$5.75M0.3%–––
FCAXFortress Capital Acquisition CorpSHS CL A573,300$5.62M0.3%––History
Integra Lifesciences Hldgs C457985AM1NOTE 0.500% 8/1–$5.61M0.3%–––
CCLCarnival Corp Ltd.UNIT 99/99/9999209,801$5.57M0.3%––History
CC Neuberger Principal HoldnG1992N118UNIT 99/99/9999530,825$5.30M0.3%–––
MIECohen & Steers MLP Income & Energy Opportunity FundCOM SHS1,607,973$5.15M0.3%––History
Priveterra Acquisition Corp74275N201UNIT 99/99/9999514,380$5.11M0.3%–––
Diamondhead Holdings Corp25278L204UNIT 01/21/2026515,747$5.11M0.3%–––
Khosla Ventures Acqut Co III482506102COM CL A511,599$5.09M0.3%–––
Broadscale Acquisition Corp11134Y200UNIT 02/02/2026497,437$4.93M0.3%–––
Spartan Acquisition Corp. III84677R205UNIT 99/99/9999477,842$4.79M0.3%–––
Centennial Resource Dev Inc15136AAA0NOTE 3.250% 4/0–$4.79M0.3%–––
Lumentum Hldgs Inc55024UAD1NOTE 0.500%12/1–$4.79M0.3%–––
DKNGDraftKings Inc.COM CL A77,400$4.75M0.3%––History
Apollo Strategic GRWT CPTL IG0412A110UNIT 99/99/9999473,892$4.73M0.3%–––
Lazard Growth Acquisition CoG54035129UNIT 99/99/9999472,982$4.73M0.3%–––
JWSUFJaws Mustang Acquisition CorpUNIT 99/99/9999464,540$4.71M0.3%––History
Khosla Ventures Acquisition482504107CL A461,180$4.66M0.3%–––
Equity Distr Acquisition Cor29465E106COM CL A467,233$4.63M0.2%–––
Encore Cap Group Inc292554AK8NOTE 3.250% 3/1–$4.59M0.2%–––
Zendesk, Inc.98936JAB7NOTE 0.250% 3/1–$4.56M0.2%–––
Cantel Med Corp138098108COM56,147$4.48M0.2%–––
Green Plains Inc.393222AF1CONVERTIBLE BOND–$4.43M0.2%–––
Vanguard Morningstar Small-Cap Value ETF922908611ETF26,662$4.42M0.2%–––
International FLAVORS&FRAGRA459506309UNIT 09/15/202189,691$4.41M0.2%–––
Ares Acquisition CorporationG33032114UNIT 99/99/9999436,827$4.37M0.2%–––
United States STL Corp New912909AT5NOTE 5.000%11/0–$4.34M0.2%–––
Pivotal Investment Corp III72582M205UNIT 01/28/2028427,862$4.28M0.2%–––
Arctos Northstar Acquis CorpG0477L118UNIT 99/99/9999424,104$4.24M0.2%–––
BIO.BBio-Rad Laboratories, Inc.CL B7,375$4.21M0.2%––History
RMG Acquisition Corp IIIG76088114UNIT 02/08/2026420,640$4.18M0.2%–––
Gores Holdings VII Inc38286T200UNIT 02/12/2028419,725$4.18M0.2%–––
Churchill Capital Corp VII17144M201UNIT 99/99/9999416,686$4.15M0.2%–––
SWZTotal Return Securities FundCOM461,919$4.06M0.2%––History
Hudson Executive Inves III44376L206UNIT 02/22/2026407,500$4.04M0.2%–––
Newpark Res Inc651718AE8CONVERTIBLE BOND–$4.03M0.2%–––
Pure Storage Inc74624MAB8NOTE 0.125% 4/1–$4.01M0.2%–––
Mason Industrial Technolgy I57520Y205UNIT 99/99/9999403,700$4.01M0.2%–––
Colicity Inc194170205UNIT 02/24/2026395,761$4.00M0.2%–––
Dmy Technology Group Inc IV23344K201UNIT 99/99/9999385,976$3.88M0.2%–––
Tishman Speyer Innovation Co88825H209UNIT 02/11/2026386,951$3.87M0.2%–––
J2 Global Inc48123VAC6NOTE 3.250% 6/1–$3.86M0.2%–––
Social Leverage Acquisn Corp83363K201UNIT 99/99/9999387,749$3.86M0.2%–––
Live Nation Entertainment IN538034AQ2NOTE 2.500% 3/1–$3.84M0.2%–––
One Equity Partners Open WTR68237L204UNIT 01/14/2026381,226$3.80M0.2%–––
BLBlackline, Inc.COM35,043$3.80M0.2%––History

Options (159)

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 159 by value.

Option positions of CSS LLC in Q1 2021
SecurityClassPutsCalls
TSLATesla, Inc.Stock$208.2M$2.34M
NVAXNovavax IncCOM NEW$21.8M$8.36M
SPYSPDR S&P 500 ETF TrustETF$19.8M$9.91M
BIIBBiogen Inc.COM–$29.2M
FTVFortive CorpStock$18.0M$1.72M
CCLCarnival Corp Ltd.UNIT 99/99/9999$18.3M–
DKSDick's Sporting Goods, Inc.Stock$13.5M–
GMEGameStop Corp.Stock$13.5M–
AMGNAmgen IncStock$7.46M$3.73M
IFFInternational Flavors & Fragrances IncCOM$11.0M–
MRNAModerna, Inc.Stock$2.62M$6.29M
RCLRoyal Caribbean Cruises LtdCOM$8.55M$257.0K
TDOCTeladoc Health, Inc.COM$4.36M$4.18M
GSGoldman Sachs Group IncStock–$6.38M
AAPLApple Inc.Stock$6.11M–
State Street SPDR S&P Biotech ETF78464A870ETF$4.07M$2.03M
ABBVAbbVie Inc.Stock$2.16M$3.25M
Alps ETF Tr00162Q452ALERIAN MLP$5.01M–
MGAMagna International IncCOM–$4.01M
WWayfair Inc.CL A$3.71M–
Corelogic Inc21871D103COM–$3.69M
CVNACarvana Co.CL A$1.78M$1.78M
QNCXQuince Therapeutics, Inc.COM–$3.42M
State Street Energy Select Sector SPDR ETF81369Y506ETF$3.29M$49.0K
LKFTLakefront Biotherapeutics NVSPON ADR$524.0K$2.76M
PCGPG&E CorpStock$2.50M$774.0K
EQHEquitable Holdings, Inc.COM$3.26M–
HGENHumanigen, IncCOM NEW$2.00M$1.07M
ARK ETF Tr00214Q302GENOMIC REV ETF$2.00M$825.0K
RHRHCOM$2.69M–
AMDAdvanced Micro Devices IncStock$1.18M$1.37M
Realpage Inc75606N109COM–$2.37M
AGFirst Majestic Silver CorpCOM$2.25M$90.0K
LYVLive Nation Entertainment, Inc.COM$2.12M–
DDominion Energy, IncStock$1.61M$425.0K
ARCTArcturus Therapeutics Holdings Inc.COM$1.46M$413.0K
UALUnited Airlines Holdings, Inc.COM–$1.85M
AALAmerican Airlines Group Inc.Stock$1.80M–
MCRBSeres Therapeutics, Inc.COM–$1.74M
Michaels Cos Inc59408Q106COM–$1.73M
NKENIKE, Inc.Stock$1.65M–
ITCIIntra-Cellular Therapies, Inc.COM$204.0K$1.43M
State Street Utilities Select Sector SPDR ETF81369Y886ETF–$1.60M
MPMP Materials Corp.COM CL A$1.60M–
BACBank of America CorpStock$193.0K$1.35M
DDDuPont de Nemours, Inc.COM$1.54M–
TSMTaiwan Semiconductor Manufacturing Co LtdADR–$1.49M
iShares MSCI Eafe ETF464287465ETF$721.0K$758.0K
HIGHartford Insurance Group, Inc.Stock$13.0K$1.42M
JOYYJOYY Inc.ADS REPSTG COM A$1.39M–
KALVKalVista Pharmaceuticals, Inc.COM$527.0K$833.0K
NIONIO Inc.ADR$1.01M$312.0K
QUREuniQure N.V.SHS–$1.28M
VVisa Inc.Stock$1.27M–
MNSTMonster Beverage CorpCOM$1.26M–
Curevac N VN2451R105COM$759.0K$485.0K
MITTTPG Mortgage Investment Trust, Inc.COM$1.11M$121.0K
PYPLPayPal Holdings, Inc.Stock$1.22M–
Brookfield Property Partrs LG16249107UNIT LTD PARTN$1.13M–
Cubic Corp229669106COM–$1.12M
ACADAcadia Pharmaceuticals IncCOM$1.03M$59.0K
NVDANVIDIA CorpStock$1.07M–
MRTXMirati Therapeutics, Inc.COM$69.0K$977.0K
CNPCenterpoint Energy IncCOM–$1.02M
State Street Financial Select Sector SPDR ETF81369Y605ETF$1.02M–
AUPHAurinia Pharmaceuticals Inc.COM–$1.01M
WBDWarner Bros. Discovery, Inc.COM SER A$991.0K–
SIRISirius XM Holdings Inc.COM$329.0K$643.0K
HRTXHeron Therapeutics, Inc.COM–$956.0K
Pershing Square Tontine Hldg71531R109COM CL A$888.0K$48.0K
CHNGChange Healthcare Inc.COM$563.0K$354.0K
iShares Tr464288513IBOXX HI YD ETF$872.0K–
EXASExact Sciences CorpCOM$844.0K–
BTAIQBioXcel Therapeutics, Inc.COM$600.0K$220.0K
BGBunge Global SACOM$817.0K–
ZMZoom Communications, Inc.Stock$803.0K–
Seacor Holdings Inc811904101COM$799.0K–
LENLennar CorpCL A–$769.0K
AMCAMC Entertainment Holdings, Inc.CL A COM$769.0K–
Trillium Therapeutics Inc.89620X506COM NEW–$729.0K
NAVNavistar International CorpCOM–$718.0K
BYNDBeyond Meat, Inc.COM$716.0K–
COHRCoherent Corp.COM$711.0K–
BFIBurgerFi International, Inc.COM$709.0K–
IQiQIYI, Inc.SPONSORED ADS$682.0K–
ZIONZions Bancorporation, National AssociationCOM–$671.0K
LYFTLyft, Inc.CL A COM$632.0K–
SPRUSpruce Power Holding CorpCOM CL A$629.0K–
DMDesktop Metal, Inc.COM CL A$624.0K–
BNTXBioNTech SESPONSORED ADS$611.0K–
Five Prime Therapeutics Inc33830X104COM$207.0K$400.0K
AAWWAtlas Air Worldwide Holdings IncCOM NEW$604.0K–
RUBYRubius Therapeutics, Inc.COM$588.0K–
SJISouth Jersey Industries IncCOM$375.0K$199.0K
RRXRegal Rexnord CorpCOM$570.0K–
VIRVir Biotechnology, Inc.COM$559.0K–
iShares Inc464286749MSCI SWITZERLAND$553.0K–
iShares Russell 2000 ETF464287655ETF$552.0K–
GPREGreen Plains Inc.COM$541.0K–
Farfetch Ltd30744W107ORD SH CL A$530.0K–