Investor
CSS LLC/IL
CIK 0001103646 · filed 2026-02-17 · SEC filing
13F book
$2.25B
Positions
751
Largest name
5.6%
Echostar Corp · ECHO
Est. mark
—
Need a prior quarter to estimate
- No quarter-over-quarter activity — this may be the first period on file.
Positions as of Q4 2025. 13F filings arrive up to 45 days after quarter-end and omit shorts. Values are quarter-end marks, as filed. Estimated mark is the price effect on shares still held — not realized P&L or investment advice.