Zhou Jeff Insider Trading Activity
Zhou Jeff has been net-selling over the last 12 months with 0 purchases and 6 sales across 1 company.
MPWR is the most-traded position with 6 trades. The largest single transaction was a sale of MPWR for $825K on May 6, 2026.
Performance Scorecard
Forward stock performance after each transaction by Zhou Jeff. 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 | — | -0.7% | 33% | 6 |
| 90 days | — | -11.5% | 0% | 3 |
| 120 days | — | -14.1% | 0% | 3 |
Performance based on stock price movement after each transaction date. Past results do not predict future returns. Not financial advice.
Price & Trades
Pro: Trade MarkersMPWR · MONOLITHIC POWER SYSTEMS INC
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Upgrade to ProRecent Trades
| DATE | TICKER | TYPE | SHARES | PRICE | VALUE | Δ OWNED | ROLE | FILING |
|---|---|---|---|---|---|---|---|---|
May 6, 2026 | MPWR | Sell | 500 | $1650.00 | $825K | −10.4% | Director | |
May 5, 2026 | MPWR | Sell | 514 | $1574.48 | $809K | −8.9% | Director | |
May 5, 2026 | MPWR | Sell | 500 | $1600.00 | $800K | −9.5% | Director | |
Aug 27, 2025 | MPWR | Sell | 193 | $870.00 | $168K | −3.3% | Director | |
Aug 13, 2025 | MPWR | Sell | 400 | $850.00 | $340K | −6.4% | Director | |
Aug 12, 2025 | MPWR | Sell | 200 | $830.00 | $166K | −3.1% | Director |
Top Companies Traded
| TICKER | COMPANY | TRADES | TOTAL VOLUME |
|---|---|---|---|
| MPWR | MONOLITHIC POWER SYSTEMS INC | 6 | $3.1M |
Other insiders at MONOLITHIC POWER SYSTEMS INC
7 other tracked filers at MPWR.