Chen Tien-Szu Insider Trading Activity
Chen Tien-Szu has been net-selling over the last 12 months with 0 purchases and 4 sales across 1 company.
ASX is the most-traded position with 4 trades. The largest single transaction was a sale of ASX for $152.6M on Apr 20, 2026.
Performance Scorecard
Forward stock performance after each transaction by Chen Tien-Szu. 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 | — | +93.2% | 100% | 4 |
| 90 days | — | +92.1% | 100% | 4 |
| 120 days | — | — | — | — |
Performance based on stock price movement after each transaction date. Past results do not predict future returns. Not financial advice.
Price & Trades
Pro: Trade MarkersASX · ASE Technology Holding Co., Ltd.
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| DATE | TICKER | TYPE | SHARES | PRICE | VALUE | Δ OWNED | ROLE | FILING |
|---|---|---|---|---|---|---|---|---|
Apr 20, 2026 | ASX | Sell | 328,000 | $465.11 | $152.6M | −11.8% | GM, ASE Inc. Chung-Li Branch | |
Apr 20, 2026 | ASX | Sell | 72,000 | $466.00 | $33.6M | −2.9% | GM, ASE Inc. Chung-Li Branch | |
Apr 20, 2026 | ASX | Sell | 50,000 | $467.00 | $23.4M | −2.1% | GM, ASE Inc. Chung-Li Branch | |
Apr 20, 2026 | ASX | Sell | 80,000 | $471.00 | $37.7M | −3.4% | GM, ASE Inc. Chung-Li Branch |
Top Companies Traded
| TICKER | COMPANY | TRADES | TOTAL VOLUME |
|---|---|---|---|
| ASX | ASE Technology Holding Co., Ltd. | 4 | $247.1M |
Other insiders at ASE Technology Holding Co., Ltd.
2 other tracked filers at ASX.