Wei Che-Chia
Outside the top-25 by R-coefficient, but with purchase history.
R-coefficient
—
skill with Bayesian shrinkage
60d win rate
—
% of purchases with positive return
Avg 60d return
—
after their purchases
🧱 Conviction tranches
Repeated purchases of the same stock within ≤5 days — an accumulation pattern.
Purchase history
Later sales by the same insider on the same ticker — realized gain vs average buy price. Empty = position still held.
| Date | Ticker | Role | Shares | Avg price | Amount | Sales | Avg sell price | Gain % |
|---|---|---|---|---|---|---|---|---|
| 2026-08-07 | TSM | Director, Officer(Chairman and CEO) | 152 | $73.31 | $11K | — | — | — |
| 2026-07-07 | TSM | Director, Officer(Chairman and CEO) | 146 | $76.62 | $11K | — | — | — |
| 2026-06-05 | TSM | Director, Officer(Chairman and CEO) | 150 | $76.01 | $11K | — | — | — |
| 2026-05-08 | TSM | Director, Officer(Chairman and CEO) | 160 | $71.82 | $11K | — | — | — |
| 2026-04-09 | TSM | Director, Officer(Chairman and CEO) | 186 | $57.87 | $11K | — | — | — |