SEC CIK 1296969
Casper Stephen P
Reported ownership across 1 company, sourced from SEC Form 4 filings and updated daily.
Current Positions
| Company | Shares Owned | As Of |
|---|---|---|
| MKTXview stock → | 43,208 | 2025-09-08 |
Position History — MKTX
Reported shares owned immediately after each Form 4 transaction, over time.
Not enough filing history yet to chart a trend for MKTX.
Recent Filings — MKTX
| Date | Activity | Shares | Price | Owned After |
|---|---|---|---|---|
| 2025-09-08 | Open-market sale | 1,600 | $186.59 | 43,208 |
Source: SEC EDGAR Form 4 filings. For informational purposes only — not investment advice.