Chuang Tzu-Sou Insider Trading Activity
Chuang Tzu-Sou has been net-buying over the last 12 months with 5 purchases and 1 sale across 1 company.
TSM is the most-traded position with 6 trades. The largest single transaction was a sale of TSM for $14.0M on May 19, 2026.
Performance Scorecard
Forward stock performance after each transaction by Chuang Tzu-Sou. 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 | +508.8% | -561.8% | 80% | 5 |
| 90 days | +528.7% | -517.2% | 75% | 4 |
| 120 days | +625.8% | โ | 100% | 1 |
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 ยท TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD
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Top Companies Traded
| TICKER | COMPANY | TRADES | TOTAL VOLUME |
|---|---|---|---|
| TSM | TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD | 6 | $14.0M |
Other insiders at TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD
10 other tracked filers at TSM.