Position
SIMPLEX TRADING, LLC in Western Digital Corp
Back to the book · All holders of WDC
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 $568.2K$172.27 → $270.49
| Quarter | Shares | Value | Implied px | Est. mark | Flow | Weight |
|---|---|---|---|---|---|---|
| Q4 2025 | 341.8K | $58.9M | — | — | — | 0.0% |
| Q1 2026 | 5.79K | $1.56M | $270.49 | $568.2K | −$57.9M | 0.0% |