Position
SIMPLEX TRADING, LLC in Markel Group Inc.
Back to the book · All holders of MKL
Estimated mark uses implied 13F prices (value ÷ shares). Adds are treated as happening at this quarter’s mark; cuts at last quarter’s. Share jumps can be splits, not buys. This is not realized P&L.
Latest estimated mark −$64.5K$2,149.65 → $1,914.07
| Quarter | Shares | Value | Implied px | Est. mark | Flow | Weight |
|---|---|---|---|---|---|---|
| Q4 2025 | 640 | $1.38M | — | — | — | 0.0% |
| Q1 2026 | 274 | $524.5K | $1,914.07 | −$64.5K | −$786.8K | 0.0% |