Cheng Chi Fung
Chief Technology Officer
All tracked transactions
Curated subset of Cheng Chi Fung's SEC Form 4 filings. Routine 10b5-1 schedule sales are flagged inline and weighted less in the conviction score.
| Date | Ticker | Action | Value |
|---|---|---|---|
| Apr 16, 2026 | CRDO | sell | $17K 100 × $165.51 |
| Apr 16, 2026 | CRDO | sell | $71K 440 × $160.3673 |
| Apr 16, 2026 | CRDO | sell | $773K 4,865 × $158.9436 |
| Apr 16, 2026 | CRDO | sell | $1.63M 10,300 × $158.1992 |
| Apr 16, 2026 | CRDO | sell | $872K 5,545 × $157.3302 |
| Apr 16, 2026 | CRDO | sell | $452K 2,895 × $155.9972 |
| Apr 16, 2026 | CRDO | sell | $381K 2,455 × $155.1548 |
| Apr 16, 2026 | CRDO | sell | $139K 900 × $154.0967 |
| Apr 16, 2026 | CRDO | sell | $17K 100 × $165.51 |
| Apr 16, 2026 | CRDO | sell | $71K 440 × $160.3673 |
| Apr 16, 2026 | CRDO | sell | $773K 4,865 × $158.9436 |
| Apr 16, 2026 | CRDO | sell | $1.63M 10,300 × $158.1992 |
| Apr 16, 2026 | CRDO | sell | $872K 5,545 × $157.3302 |
| Apr 16, 2026 | CRDO | sell | $452K 2,895 × $155.9972 |
| Apr 16, 2026 | CRDO | sell | $381K 2,455 × $155.1548 |
| Apr 16, 2026 | CRDO | sell | $139K 900 × $154.0967 |
Method
Conviction score = logistic(role_weight × (buy_value − 0.2 × discretionary_sell_value)) mapped to −100..+100. CEOs and founders carry role_weight 0.95-1.0; directors 0.5; former executives 0.3. Routine 10b5-1 schedule sales are weighted down sharply — insiders file pre-arranged selling plans that trigger independent of their view of the stock, so they carry minimal signal. Open-market discretionary buys are rare and carry the heaviest weight.
Role weight: 0.40 (Chief Technology Officer).
Data sourced from SEC Form 4 filings via EDGAR. Curated subset (not every filing) — we prioritize CEO/CFO/Chair/10%-owner transactions and material $ amounts over noise.
Tickers Cheng has traded
SEC Form 4 filings disclose trades by corporate insiders within 2 business days. Conviction scoring is a synthesis — not investment advice.