Ming Hsieh is Director at Fortinet, Inc. (FTNT). They have made 22 open-market trades across 3 companies since 2008, most recently 2026-09-30.
CIK 0001302110
Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.
12 open-market purchases totalling $9.6M since 2016, against 10 sales. Across 12 scored buys the stock is up 22.6% at ninety days, and 19.6 points ahead of the S&P over the same stretch.
12 scored purchases · one row per filing · discretionary only
| 7d | 30d | 90d | |
|---|---|---|---|
| Accuracy | 75% | 67% | 92% |
| Avg Move | +8.0% | +10.5% | +22.6% |
| Alpha | +7.3% | +9.4% | +19.6% |
| Scored | 12 | 12 | 12 |
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| FLGT | SELL | 2024-11-25 | 2024-11-27 | $18.26 | $41K | +11.7% | +1.4% | -10.0% |
| FLGT | SELL | 2024-08-27 | 2024-08-29 | $22.83 | $106K | -5.8% | -5.9% | -21.8% |
| FLGT | BUY | 2019-03-05 | 2019-03-07 | $4.95 | $43K | +17.8% | +21.0% | +27.9% |
| FLGT | BUY | 2018-11-13 | 2018-11-15 | $3.59 | $39K | +3.5% | -4.5% | +21.3% |
| FLGT | BUY | 2018-11-09 | 2018-11-13 | $3.36 | $34K | -13.5% | -7.7% | +11.0% |
| FTNT | SELL | 2018-09-07 | 2018-09-10 | $85.50 | $1.2M | -2.1% | -9.1% | -14.6% |
| FLGT | BUY | 2017-11-30 | 2017-12-04 | $3.60 | $4K | -7.4% | +15.1% | +2.2% |
| FLGT | BUY | 2017-11-21 | 2017-11-22 | $3.13 | $5K | +5.0% | +20.1% | +30.3% |
| FTNT | SELL | 2017-11-20 | 2017-11-20 | $40.41 | $13K | +2.9% | +9.4% | +19.7% |
| FLGT | BUY | 2017-11-17 | 2017-11-21 | $3.20 | $63K | +17.6% | +38.5% | +43.3% |
| FLGT | BUY | 2017-11-15 | 2017-11-17 | $3.23 | $7K | +9.3% | +7.2% | +40.7% |
| FLGT | BUY | 2017-11-13 | 2017-11-15 | $3.30 | $35K | +5.8% | +5.2% | +39.7% |
| FTNT | SELL | 2017-11-09 | 2017-11-13 | $39.64 | $423K | +4.9% | +6.8% | +16.3% |
| FLGT | BUY | 2017-11-09 | 2017-11-13 | $3.42 | $71K | +0.3% | -0.3% | +26.1% |
| FLGT | BUY | 2017-06-14 | 2017-06-15 | $5.26 | $105K | +33.6% | +19.3% | +0.0% |
| FLGT | BUY | 2017-06-12 | 2017-06-13 | $4.98 | $149K | +37.9% | +22.8% | +17.3% |
| FTNT | SELL | 2017-06-08 | 2017-06-09 | $39.29 | $373K | +2.3% | +4.4% | +1.3% |
| FLGT | BUY | 2016-09-30 | 2016-10-04 | $9.00 | $9.0M | -13.5% | -10.3% | +12.1% |
| FTNT | SELL | 2016-08-22 | 2016-08-23 | $34.84 | $833K | +3.7% | +2.4% | -13.7% |
| FTNT | SELL | 2016-08-22 | 2016-08-23 | $34.84 | $1.7M | +3.7% | +2.4% | -13.7% |
| COGT | SELL | 2010-10-08 | 2010-10-12 | $10.50 | $309.9M | -6.0% | -5.4% | -5.4% |
| COGT | SELL | 2008-11-28 | 2008-12-02 | $12.91 | $1.3M | -6.0% | -5.4% | -5.4% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.