CSS LLC/IL
CHICAGO, IL · CIK 1103646 · 13F filing filed 2026-08-14
No investment adviser registration (Form ADV) found for this filer. It may be a parent company whose subsidiaries are the registered advisers, a bank or insurer, or a manager based outside the US.
- Legal entityCSS, LLC (US)
$2.3bn
reported value
+25.4% vs Q1 2026
766positions
39.9%in top 10
211 new
186 added
195 reduced
184 sold out
vs Q1 2026
Options: 101 call positions ($70.5m notional), 134 put positions ($243.8m notional) – listed below, not included above.
Holdings, Q2 2026
The small lines show how much was held over the last 4 quarters (adjusted for stock splits).
| Security | Value | Change |
|---|---|---|
| LUMENTUM HLDGS INC LITE 0.5 06.15.28 · principal | $245.6m10.89% | Reduced -2.9m |
| HEWLETT PACKARD ENTERPRISE C HPE 7.625 09.01.27 | $149.3m6.62% | Added +1.2m |
| ECHOSTAR CORP ECHO 3.875 11.30.30 · principal | $137.4m6.10% | Added +3.0m |
| APOLLO GLOBAL MGMT INC APO 6.75 07.31.26 | $82.8m3.67% | Added +1.1m |
| BANK AMERICA CORP BAC 7.25 PERP L | $63.3m2.81% | Added +40.1k |
| WOLFSPEED INC WOLF 2.5 06.15.31 · principal | $54.2m2.40% | Added +4.5m |
| SUPER MICRO COMPUTER INC SMCI 7 06.01.29 | $45.3m2.01% | New |
| CORE SCIENTIFIC INC NEW CORZW | $44.2m1.96% | Added +268.4k |
| MICROCHIP TECHNOLOGY INC. MCHP 7.5 03.15.28 | $43.0m1.91% | New |
| CLOUDFLARE INC NET 0 08.15.26 · principal | $33.5m1.49% | Added +12.7m |
| AKAMAI TECHNOLOGIES INC AKAM 1.125 02.15.29 · principal | $29.6m1.31% | Added +9.1m |
| ALBEMARLE CORP ALB 7.25 03.01.27 | $26.1m1.16% | Added +220.2k |
| CENTERPOINT ENERGY INC CNP 4.25 08.15.26 · principal | $25.3m1.12% | Unchanged |
| EQUINOX GOLD CORP EQXCN 4.75 10.15.28 · principal | $25.1m1.11% | Added +7.0m |
| BOEING CO BA 6 10.15.27 | $23.6m1.05% | New |
| TRANSOCEAN INC RIG 4.625 09.30.29 * · principal | $23.5m1.04% | Reduced -9.2m |
| EL PASO ENERGY CAP TR I KMI 4.75 03.31.28 | $22.6m1.00% | Added +219.8k |
| INVESCO EXCHANGE TRADED FD T RSP | $22.1m0.98% | Added +590 |
| VANGUARD INDEX FDS VOO | $22.1m0.98% | Unchanged |
| IREN LIMITED IREN 3.5 12.15.29 IREN · principal | $21.2m0.94% | New |
| DIGITALOCEAN HLDGS INC DOCN 0 12.01.26 · principal | $19.5m0.87% | New |
| PTC THERAPEUTICS INC PTCT 1.5 09.15.26 · principal | $18.6m0.83% | Added +9.1m |
| SNOWFLAKE INC SNOW 0 10.01.29 · principal | $16.5m0.73% | Reduced -3.7m |
| WESTERN DIGITAL CORP WDC | $15.9m0.71% | Reduced -500 |
| GAMESTOP CORP GME 0 06.15.32 · principal | $15.2m0.67% | New |
| ISHARES GOLD TR IAU | $15.1m0.67% | Unchanged |
| KIMCO RLTY CORP KIM 7.25 PERP N | $15.0m0.66% | Added +33 |
| ALPHABET INC GOOGL 6.25 05.15.29 B | $13.4m0.59% | New |
| SPDR S&P 500 ETF TR SPY | $12.9m0.57% | New |
| PENUMBRA INC PEN | $12.2m0.54% | Added +2.6k |
| IONIS PHARMACEUTICALS INC IONS | $12.1m0.54% | Added +73.2k |
| BRIDGEBIO PHARMA INC BBIO 1.75 03.01.31 · principal | $12.1m0.54% | Reduced -2.9m |
| CELCUITY INC CELC 2.75 08.01.31 · principal | $11.9m0.53% | Reduced -1.0m |
| HAEMONETICS CORP MASS HAE 2.5 06.01.29 · principal | $11.6m0.52% | Added +11.4m |
| GUARDANT HEALTH INC GH 1.25 02.15.31 · principal | $11.3m0.50% | Reduced -2.5m |
| MARA HOLDINGS INC MARA 2.125 09.01.31 · principal | $11.1m0.49% | Reduced -6.5m |
| BROOKDALE SR LIVING INC BKD 2 10.15.26 · principal | $11.0m0.49% | Unchanged |
| ALNYLAM PHARMACEUTICALS INC ALNY 1 09.15.27 · principal | $10.9m0.48% | Reduced -9.5m |
| TRANSMEDICS GROUP INC TMDX 1.5 06.01.28 · principal | $10.9m0.48% | New |
| ON SEMICONDUCTOR CORP ON 0.5 03.01.29 · principal | $10.4m0.46% | Added +8.6m |
| OCEANHAWK ACQUISITION CORP OHAC | $10.3m0.46% | New |
| PPL CAP FDG INC PPL 2.875 03.15.28 · principal | $10.2m0.45% | Added +6.0m |
| FUTURECORP SPACE ACQUISITION FTRA.U | $10.1m0.45% | New |
| MARA HOLDINGS INC MARA 0 03.01.30 · principal | $9.5m0.42% | Reduced -3.5m |
| GUARDANT HEALTH INC GH 0 11.15.27 · principal | $9.4m0.42% | New |
| CHART INDS INC GTLS | $9.4m0.42% | Added +34.4k |
| BEYOND MEAT INC BYND 7 10.15.30 · principal | $9.3m0.41% | Reduced -3.1m |
| JANUS HENDERSON GROUP PLC ORD SHS | $9.2m0.41% | Added +160.7k |
| SPECIAL OPPORTUNITIES FD INC SPE 2.75 01.27.27 C | $9.0m0.40% | Added +17.4k |
| LYFT INC LYFT 0.625 03.01.29 · principal | $8.9m0.40% | Added +1.3m |
| SRH TOTAL RETURN FUND INC STEW | $8.3m0.37% | Unchanged |
| NEXTERA ENERGY INC NEE 7.375 02.15.29 | $8.2m0.37% | Reduced -368.7k |
| INTEGER HLDGS CORP ITGR 1.875 03.15.30 · principal | $7.8m0.34% | Added +4.1m |
| TITAN ACQUISITION CORP TACH | $7.4m0.33% | Unchanged |
| GREEN PLAINS INC GPRE 5.25 11.01.30 UNRS · principal | $7.1m0.32% | Unchanged |
| PEABODY ENGR CORP BTU 3.25 03.01.28 · principal | $7.0m0.31% | Reduced -15.4m |
| JAZZ PHARMACEUTICALS PLC JAZZ | $7.0m0.31% | New |
| EQV VENTURES AC CORP. II EVAC | $6.9m0.30% | Added +554.7k |
| WEN ACQUISITION CORP WENN | $6.7m0.30% | Unchanged |
| REVOLUTION MEDICINES INC RVMDW | $6.6m0.29% | Added +60.9k |
| ALPHABET INC GOOGL 6.25 05.15.29 A | $6.3m0.28% | New |
| LITMAN GREGORY FDS TR DBMF | $6.3m0.28% | Unchanged |
| STRATEGY INC MSTR 0 03.01.30 · principal | $6.2m0.28% | Unchanged |
| TOTAL RETURN SECURITIES FUND SWZ | $6.2m0.27% | Added +19.6k |
| LIONHEART HOLDINGS CUB | $5.5m0.24% | New |
| AZUL S A AZUL | $5.4m0.24% | New |
| TRG LATIN AMER ACQUIS CORP TRGS | $5.3m0.23% | New |
| BLOOM ENERGY CORP BE | $5.2m0.23% | Added +100 |
| NEXTERA ENERGY INC NEE 7.299 06.01.27 | $5.2m0.23% | Added +48.7k |
| ALIBABA GROUP HLDG LTD BABA 0.5 06.01.31 · principal | $5.1m0.23% | Added +1.9m |
| SILA REALTY TRUST INC COMMON STOCK | $5.1m0.23% | New |
| ARMADA ACQUISITION CORP III AACIU | $5.0m0.22% | Reduced -41 |
| SHIFT4 PMTS INC FOUR 6 05.01.28 | $5.0m0.22% | Reduced -909 |
| SIMPLIFY EXCHANGE TRADED FUN CTA | $5.0m0.22% | Unchanged |
| MACOM TECH SOLUTIONS HLDGS I MTSI | $5.0m0.22% | Added +1.9k |
| ELECTRONIC ARTS INC EA | $5.0m0.22% | Added +14.9k |
| ART TECHNOLOGY ACQUISITION C ARTC | $4.8m0.21% | Added +396.3k |
| LAKE SUPERIOR ACQUISITION CO LKSP | $4.7m0.21% | Unchanged |
| INFLECTION PT ACQUISITION CO CL A ORD SHS | $4.7m0.21% | Unchanged |
| SABA CAPITAL INCOME & OPRNT BRW | $4.5m0.20% | Reduced -21.8k |
| KEYSTONE ACQUISITION CORP KEYY | $4.5m0.20% | New |
| DIGITALBRIDGE GROUP INC CL A NEW | $4.3m0.19% | Added +10.8k |
| VIRIDIAN THERAPEUTICS INC VRDN 1.75 05.15.32 · principal | $4.3m0.19% | New |
| LIBERTY LIVE HOLDINGS INC LLYVA | $4.2m0.19% | Unchanged |
| DIGITAL ASSET ACQUISITION CO DAAQ | $4.2m0.19% | Added +36.5k |
| AMERICAN CENTY ETF TR AVES | $4.1m0.18% | Unchanged |
| FIVE9 INC FIVN 1 03.15.29 · principal | $4.1m0.18% | Added +2.1m |
| PURECYCLE TECHNOLOGIES INC PCT 4.75 07.01.32 · principal | $4.1m0.18% | New |
| XEROX HOLDINGS CORP XRX 3.75 03.15.30 · principal | $4.0m0.18% | Added +7.5m |
| ORACLE CORP ORCL 6.5 01.15.29 D | $4.0m0.18% | Added +20.6k |
| MESHFLOW ACQUISITION CORP MESH | $4.0m0.18% | Reduced -721 |
| INTERNATIONAL MNY EXPRESS IN IMXI | $3.9m0.17% | Added +197.7k |
| WAYFAIR INC W 3.25 09.15.27 · principal | $3.8m0.17% | New |
| CHEESECAKE FACTORY INC CAKE 2 03.15.30 · principal | $3.8m0.17% | Reduced -10.2m |
| MEXICO EQUITY & INCOME FD MXE | $3.8m0.17% | Reduced -742 |
| CANTOR EQUITY PARTNERS VII I CAES | $3.8m0.17% | New |
| ISHARES TR IVLU | $3.8m0.17% | Unchanged |
| UBER TECHNOLOGIES INC UBER 0 05.15.28 · principal | $3.7m0.17% | New |
| INFLECTION PT ACQUISIT CORP IPFX | $3.7m0.16% | New |
| JOBY AVIATION INC JOBY 0.75 02.15.32 · principal | $3.6m0.16% | Reduced -1.0m |
Sold out since Q1 2026
| Security | Value then |
|---|---|
| JAZZ INVESTMENTS I LTD JAZZ 2 06.15.26 | $63.9m52.6m shares |
| LIVE NATION ENTERTAINMENT IN LYV 3.125 01.15.29 | $49.9m32.8m shares |
| STRIDE INC LRN 1.125 09.01.27 | $17.8m10.3m shares |
| CSG SYS INTL INC CSGS 3.875 09.15.28 | $9.1m7.5m shares |
| HOLOGIC INC HOLX | $8.9m118.0k shares |
| SOUTHERN CO SO 4.5 06.15.27 | $7.9m7.1m shares |
| STRATEGY INC MSTR 2.25 06.15.32 | $7.7m7.5m shares |
| IRON HORSE ACQUISIT II CORP IRHO | $7.3m737.6k shares |
| NEXTERA ENERGY CAP HLDGS INC NEE 3 03.01.27 | $6.9m5.0m shares |
| FLUENCE ENERGY INC FLNC 2.25 06.15.30 | $6.2m6.1m shares |
| SPECTRUM BRANDS INC SPB 3.375 06.01.29 | $6.2m6.3m shares |
| SUPER MICRO COMPUTER INC SMCI 2.25 07.15.28 | $5.6m6.4m shares |
| SPDR GOLD TR GLD | $5.4m12.6k shares |
| TRG LATIN AMER ACQUIS CORP TRGSU | $5.3m533.3k shares |
| AMPRIUS TECHNOLOGIES INC AMPX.WS | $5.2m754.9k shares |
| TOPGOLF CALLAWAY BRANDS CORP CALY 2.75 05.01.26 | $5.2m5.2m shares |
| H WORLD GROUP LTD HTHT 3 05.01.26 | $5.1m3.8m shares |
| SOLAREDGE TECHNOLOGIES INC SEDG 2.25 07.01.29 | $4.6m2.7m shares |
| WORKIVA INC WK 1.25 08.15.28 | $4.5m4.8m shares |
| INFLECTION PT ACQUISIT CORP IPFXU | $4.1m405.7k shares |
| BAIN CAP GSS INVT CORP BCSS | $3.9m387.4k shares |
| METALS ACQUISITION CORP II MTAL.U | $3.8m374.4k shares |
| FG MERGER II CORP | $3.6m352.1k shares |
| MOZAYYX ACQUISITION CORP MZYX.U | $3.1m308.4k shares |
| ETSY INC ETSY 0.125 10.01.26 | $3.0m3.1m shares |
Options (notional value)
| Underlying | Notional | Change |
|---|---|---|
| GAMESTOP CORP NEW GME · Put | $27.2m1.2m shares | Added |
| KINDER MORGAN INC DEL KMI · Put | $21.7m678.9k shares | New |
| XEROX HOLDINGS CORP Put | $16.0m5.1m shares | Reduced |
| SPDR S&P 500 ETF TR SPY · Call | $14.2m19.0k shares | Reduced |
| PENUMBRA INC PEN · Put | $11.4m36.1k shares | Reduced |
| ELECTRONIC ARTS INC EA · Put | $9.8m47.8k shares | Added |
| ISHARES TR TLT · Call | $7.8m90.0k shares | Added |
| CHART INDS INC GTLS · Put | $7.6m36.3k shares | Added |
| SUPER MICRO COMPUTER INC SMCI · Put | $7.4m253.9k shares | Added |
| SELECT SECTOR SPDR TR XLE · Put | $6.4m119.7k shares | Added |
| REVOLUTION MEDICINES INC RVMD · Put | $5.5m29.6k shares | Added |
| AMERICAN AIRLS GROUP INC AAL · Put | $5.3m292.5k shares | Reduced |
| SHIFT4 PMTS INC FOUR · Put | $5.2m107.8k shares | Unchanged |
| ISHARES TR TLT · Put | $4.8m55.0k shares | Reduced |
| MARA HOLDINGS INC MARA · Put | $4.7m341.4k shares | Reduced |
| ECHOSTAR CORP ECHO · Put | $4.6m45.2k shares | Unchanged |
| DIGITALBRIDGE GROUP INC Put | $4.3m272.9k shares | Reduced |
| SPDR GOLD TR GLD · Call | $4.1m11.0k shares | Added |
| ISHARES TR HYG · Put | $4.0m50.0k shares | Added |
| NEBIUS GROUP N.V. NBIS · Put | $4.0m14.4k shares | Reduced |
| NIO INC NIO · Put | $4.0m783.3k shares | Added |
| SELECT SECTOR SPDR TR XLV · Put | $3.8m23.7k shares | New |
| MICROSTRATEGY INC MSTR · Put | $3.6m41.5k shares | Reduced |
| HIMS & HERS HEALTH INC HIMS · Put | $3.0m87.4k shares | Unchanged |
| BOSTON SCIENTIFIC CORP BSX · Call | $2.9m68.0k shares | New |
Stakes above 5%
Companies where this manager has reported owning more than 5% of a class of shares, on Schedule 13D (may seek influence) or 13G (passive): its latest filing for each, from 19 Dec 2024 on.
| Company | Stake |
|---|---|
| TOTAL RETURN SECURITIES FUND SWZ · 13G · filed 2026-04-17 | 7.9%≈ $6.1m |
| MEXICO EQUITY & INCOME FD MXE · 13G · filed 2026-02-13 | 7.6%≈ $4.3m |
| RIVERNORTH CAP AND INCM FD I XRSFX · 13G · filed 2025-12-19 | 6.3%≈ $3.9m |
| WOLFSPEED INC WOLF · 13G · filed 2026-06-08 | 5.9%≈ $146.5m |
| HERZFELD CARIBBEAN BASIN FD HERZ · 13G · filed 2026-10-20 | 5.5%≈ $1.9m |
| OCEANHAWK ACQUISITION CORP OHAC · 13G · filed 2026-10-06 | 5.5%≈ $10.3m |