Position
SIMPLEX TRADING, LLC in Fastenal Co
Back to the book · All holders of FAST
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 $170.2K$40.13 → $46.40
| Quarter | Shares | Value | Implied px | Est. mark | Flow | Weight |
|---|---|---|---|---|---|---|
| Q4 2025 | 48.5K | $1.94M | — | — | — | 0.0% |
| Q1 2026 | 27.1K | $1.26M | $46.40 | $170.2K | −$855K | 0.0% |