Tien Bor-Zen
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 | Officer(VP) | 49 | $73.31 | $4K | 0 | — | — |
| 2026-08-03 | TSM | Officer(VP) | 1000 | $73.06 | $73K | — | — | — |
| 2026-07-28 | TSM | Officer(VP) | 1015 | $72.73 | $74K | 0 | — | — |
| 2026-07-21 | TSM | Officer(VP) | 4000 | $74.33 | $297K | 0 | — | — |
| 2026-07-20 | TSM | Officer(VP) | 10 | $405.00 | $4K | — | — | — |
| 2026-07-07 | TSM | Officer(VP) | 46 | $76.62 | $4K | 0 | — | — |
| 2026-06-30 | TSM | Officer(VP) | 1000 | $75.70 | $76K | — | — | — |
| 2026-06-29 | TSM | Officer(VP) | 1000 | $76.64 | $77K | — | — | — |
| 2026-06-05 | TSM | Officer(VP) | 50 | $76.01 | $4K | 0 | — | — |
| 2026-05-20 | TSM | Officer(VP) | 7 | $400.00 | $3K | — | — | — |
| 2026-05-19 | TSM | Officer(VP) | 2010 | $71.51 | $144K | 0 | — | — |
| 2026-05-08 | TSM | Officer(VP) | 51 | $71.82 | $4K | 0 | — | — |
| 2026-04-28 | TSM | Officer(VP) | 15 | $387.33 | $6K | 0 | — | — |
| 2026-04-09 | TSM | Officer(VP) | 62 | $57.87 | $4K | 0 | — | — |
| 2026-03-22 | TSM | Officer(VP) | 1000 | $55.93 | $56K | — | — | — |