Tien Bor-Zen Insider Trading Activity
Tien Bor-Zen has been net-buying over the last 12 months with 24 purchases and 0 sales across 1 company.
TSM is the most-traded position with 24 trades. The largest single transaction was a purchase of TSM for $77K on Jun 29, 2026.
Performance Scorecard
Forward stock performance after each transaction by Tien Bor-Zen. Buy returns measure price movement after open-market purchases; sell-avoided measures the loss avoided after open-market sales. Success rate counts trades where the insider's direction was right.
| PERIOD | AVG BUY RETURN | AVG SELL AVOIDED | SUCCESS RATE | TRADES |
|---|---|---|---|---|
| 30 days | +342.9% | — | 100% | 22 |
| 90 days | +370.3% | — | 100% | 12 |
| 120 days | +377.3% | — | 100% | 5 |
Performance based on stock price movement after each transaction date. Past results do not predict future returns. Not financial advice.
Price & Trades
Pro: Trade MarkersTSM · TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD
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| DATE | TICKER | TYPE | SHARES | PRICE | VALUE | Δ OWNED | ROLE | FILING |
|---|---|---|---|---|---|---|---|---|
Aug 7, 2026 | TSM | Buy | 7 | $73.31 | $513.17 | +9.6% | VP | |
Aug 7, 2026 | TSM | Buy | 42 | $73.31 | $3K | +18.4% | VP | |
Aug 3, 2026 | TSM | Buy | 1,000 | $73.06 | $73K | +7.7% | VP | |
Jul 28, 2026 | TSM | Buy | 10 | $390.00 | $4K | +8.5% | VP | |
Jul 28, 2026 | TSM | Buy | 1,000 | $67.97 | $68K | +25.0% | VP | |
Jul 28, 2026 | TSM | Buy | 5 | $390.00 | $2K | +3.9% | VP | |
Jul 21, 2026 | TSM | Buy | 1,000 | $74.13 | $74K | +8.3% | VP | |
Jul 20, 2026 Filed 3d late | TSM | Buy | 10 | $405.00 | $4K | +9.3% | VP | |
Jul 7, 2026 | TSM | Buy | 40 | $76.62 | $3K | +21.3% | VP | |
Jul 7, 2026 | TSM | Buy | 6 | $76.62 | $459.72 | +9.0% | VP | |
Jun 30, 2026 | TSM | Buy | 1,000 | $75.70 | $76K | — | VP | |
Jun 29, 2026 | TSM | Buy | 1,000 | $76.64 | $77K | +9.0% | VP | |
Jun 5, 2026 | TSM | Buy | 43 | $76.01 | $3K | +29.7% | VP | |
Jun 5, 2026 | TSM | Buy | 7 | $76.01 | $532.07 | +11.7% | VP | |
May 20, 2026 | TSM | Buy | 7 | $400.00 | $3K | +7.0% | VP | |
May 19, 2026 | TSM | Buy | 1,000 | $69.98 | $70K | +11.0% | VP | |
May 19, 2026 | TSM | Buy | 10 | $391.81 | $4K | +11.1% | VP | |
May 8, 2026 | TSM | Buy | 44 | $71.82 | $3K | +43.6% | VP | |
May 8, 2026 | TSM | Buy | 7 | $71.82 | $502.74 | +13.2% | VP | |
Apr 28, 2026 | TSM | Buy | 5 | $390.00 | $2K | +6.3% | VP | |
Apr 28, 2026 | TSM | Buy | 10 | $386.00 | $4K | +14.3% | VP | |
Apr 9, 2026 | TSM | Buy | 53 | $57.87 | $3K | +110.4% | VP | |
Apr 9, 2026 | TSM | Buy | 9 | $57.87 | $520.83 | +20.5% | VP | |
Mar 22, 2026 | TSM | Buy | 1,000 | $55.93 | $56K | +12.4% | VP |
Top Companies Traded
| TICKER | COMPANY | TRADES | TOTAL VOLUME |
|---|---|---|---|
| TSM | TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD | 24 | $534K |
Other insiders at TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD
10 other tracked filers at TSM.