CSS LLC/IL
CIK 1103646 · Holdings on Dec 31, 2025 · First reported Feb 17, 2026
Top ten holdings
Q4 2025- 278768AB27.15%
- LITE6.50%
- 472145AF84.26%
- 462222AD23.48%
- 704551AD22.88%
- 538034BA62.69%
- 29446YAC02.51%
- LITE2.25%
- 893830BW82.13%
- 10806XAD41.69%
Share classes counted separately35.54%
Portfolio value by quarter
What changed this quarter?
Within preview · weight change- 278768AB2Weight increased · +5.04 pp2.11% → 7.15%Shares +23.42M (+162.52%)
- 86333MAA6Weight decreased · -3.80 pp4.59% → 0.79%Shares -16.97M (-62.24%)
- LITEWeight increased · +3.55 pp2.95% → 6.50%Shares +5.00M (+14.10%)
Weight = security value ÷ total reported holdings value. Changes are in percentage points; price moves also affect weights, so they are not trade sizes.
Top 10 holdings 25
USD · B = billion · M = million; expand a row for exact values| # | Security | Value | Weight | Quantity | Weight / quantity change | Activity | |
|---|---|---|---|---|---|---|---|
| 01 | 278768AB2ECHOSTAR CORPNOTE 3.875%11/3 View history and evidence | $126.55M | 7.15% | 37.83M principal (USD) | 2.11% → 7.15%+5.04 pp +23.42M (+162.52%) | Added | ↗▾ |
| 02 | LITELUMENTUM HOLDINGS INCNOTE 0.500% 6/1 View history and evidence | $114.97M | 6.50% | 40.46M principal (USD) | 2.95% → 6.50%+3.55 pp +5.00M (+14.10%) | Added | ↗▾ |
| 03 | 472145AF8JAZZ INVESTMENTS I LTDNOTE 2.000% 6/1 View history and evidence | $75.40M | 4.26% | 65.07M principal (USD) | 3.94% → 4.26%+0.32 pp +2.50M (+4.00%) | Added | ↗▾ |
| 04 | 462222AD2IONIS PHARMACEUTICALS INNOTE 4/0 View history and evidence | $61.52M | 3.48% | 44.79M principal (USD) | 4.57% → 3.48%-1.09 pp -17.59M (-28.20%) | Reduced | ↗▾ |
| 05 | 704551AD2PEABODY ENERGY CORPNOTE 3.250% 3/0 View history and evidence | $50.88M | 2.88% | 30.27M principal (USD) | 2.29% → 2.88%+0.59 pp +4.75M (+18.61%) | Added | ↗▾ |
| 06 | 538034BA6LIVE NATION ENTERTAINMENNOTE 3.125% 1/1 View history and evidence | $47.64M | 2.69% | 32.76M principal (USD) | 4.37% → 2.69%-1.68 pp -12.50M (-27.62%) | Reduced | ↗▾ |
| 07 | 29446YAC0EQUINOX GOLD CORPNOTE 4.750%10/1 View history and evidence | $44.41M | 2.51% | 18.94M principal (USD) | 2.17% → 2.51%+0.34 pp 0 (0.00%) | Unchanged | ↗▾ |
| 08 | LITELUMENTUM HOLDINGS INCNOTE 1.500%12/1 View history and evidence | $39.90M | 2.25% | 7.50M principal (USD) | 1.94% → 2.25%+0.31 pp -6.00M (-44.44%) | Reduced | ↗▾ |
| 09 | 893830BW8TRANSOCEAN INTERNTNL LTDDEB 4.625% 9/3 View history and evidence | $37.62M | 2.13% | 27.33M principal (USD) | 1.64% → 2.13%+0.49 pp +4.51M (+19.77%) | Added | ↗▾ |
| 10 | 10806XAD4BRIDGEBIO PHARMA INCNOTE 2.250% 2/0 View history and evidence | $29.83M | 1.69% | 26.50M principal (USD) | 0.09% → 1.69%+1.60 pp +25.00M (+1666.67%) | Added | ↗▾ |
Options overlay 248
$480.22M notionalPut and Call positions are separate. Notional is based on underlying securities, not option premium, market value or net exposure. Quantities are underlying shares.
| Security | Put / Call | Underlying shares | Notional | Quantity change | |
|---|---|---|---|---|---|
WDCWESTERN DIGITAL CORPPUT View history and evidence | Put | 330.00K | $56.85M | +330.00K | ▾ |
SPYSS SPDR S&P 500 ETF TRUST-USTR UNIT View history and evidence | Call | 72.70K | $49.58M | +28.70K (+65.23%) | ▾ |
MSTRSTRATEGY INCCL A NEW View history and evidence | Put | 281.40K | $42.76M | -11.30K (-3.86%) | ▾ |
3 / 248 options · preview only
Exited positions 308
| Security | Type | Shares out | Value out | Previous filing | This filing |
|---|---|---|---|---|---|
| SNDK SANDISK CORP | Put | -330,000 | -$37.03M | SEC filing ↗ | SEC filing ↗ |
| 92939UAP1 WEC ENERGY GROUP INC | Non-derivative | -13,976,000 | -$16.76M | SEC filing ↗ | SEC filing ↗ |
| 893830BT5 TRANSOCEAN INTERNTNL LTD | Non-derivative | -13,678,000 | -$13.77M | SEC filing ↗ | SEC filing ↗ |
3 / 308 preview exits. Up to 30 exit records are previewed. Exit means absent from the current filing; execution date, price and proceeds are unknown.
Every number has a source.
CIK 1103646 · Period 2025-12-31
Data loaded 2026-09-23 · First reported 2026-02-17
Amendments and versions
{
"amendments_merged": null,
"prior_versions": null,
"cover_table_value": 2249783372
}Research all 999 reported holdings.
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