Loan T. le Duy is Director at NATIONAL INSTRUMENTS CORP /DE/ (NATI). They have made 21 open-market trades across 4 companies since 2011, most recently 2026-07-29.
CIK 0001192886
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.
20 open-market purchases totalling $2.7M since 2014, against 1 sale. Across 19 scored buys the stock is down 4.9% at ninety days, and 7.7 points behind the S&P over the same stretch.
20 scored purchases · one row per filing · discretionary only
| 7d | 30d | 90d | |
|---|---|---|---|
| Accuracy | 35% | 35% | 37% |
| Avg Move | +0.4% | -3.2% | -4.9% |
| Alpha | +0.5% | -3.2% | -7.7% |
| Scored | 20 | 20 | 19 |
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| WOLF | BUY | 2024-11-20 | 2024-11-21 | $6.34 | $127K | +45.2% | +12.2% | +0.4% |
| ATOM | BUY | 2024-04-29 | 2024-04-29 | $4.60 | $23K | -13.2% | -10.7% | -34.6% |
| WOLF | BUY | 2023-08-23 | 2023-08-24 | $47.01 | $235K | -5.7% | -12.0% | -27.4% |
| WOLF | BUY | 2022-11-18 | 2022-11-21 | $90.98 | $455K | -4.4% | -12.2% | -18.3% |
| WOLF | BUY | 2022-11-01 | 2022-11-03 | $74.97 | $225K | +23.4% | +8.6% | +10.4% |
| WOLF | BUY | 2022-08-25 | 2022-08-25 | $120.34 | $241K | -8.9% | -10.5% | -25.1% |
| WOLF | BUY | 2022-06-01 | 2022-06-02 | $75.23 | $75K | -15.9% | -11.4% | +48.6% |
| WOLF | BUY | 2022-02-10 | 2022-02-11 | $100.04 | $100K | +4.5% | -9.7% | -26.4% |
| CREE | BUY | 2021-08-23 | 2021-08-24 | $84.61 | $85K | -3.1% | -1.9% | N/A |
| CREE | BUY | 2021-02-26 | 2021-03-01 | $105.77 | $106K | -6.5% | -9.0% | -16.7% |
| CREE | BUY | 2019-11-01 | 2019-11-04 | $45.87 | $92K | -5.3% | -13.2% | -5.6% |
| CREE | BUY | 2019-05-20 | 2019-05-21 | $60.07 | $120K | -7.7% | -1.0% | -0.3% |
| CREE | BUY | 2019-05-15 | 2019-05-16 | $64.46 | $258K | -11.0% | -14.2% | -10.2% |
| NATI | BUY | 2019-05-02 | 2019-05-02 | $43.67 | $177K | -7.1% | -13.9% | -5.6% |
| NATI | BUY | 2018-05-23 | 2018-05-25 | $41.48 | $22K | +4.8% | +1.8% | +9.8% |
| NATI | BUY | 2018-02-08 | 2018-02-12 | $46.56 | $88K | +8.1% | +11.2% | -10.8% |
| NATI | BUY | 2016-11-04 | 2016-11-04 | $27.23 | $33K | +7.9% | +7.5% | +14.0% |
| NATI | BUY | 2016-05-04 | 2016-05-04 | $27.66 | $16K | -2.8% | +3.7% | +2.3% |
| NATI | BUY | 2016-02-04 | 2016-02-05 | $27.85 | $86K | +7.8% | +12.0% | +3.2% |
| NATI | BUY | 2014-05-13 | 2014-05-13 | $27.57 | $96K | -2.4% | -0.7% | -0.7% |
| NATI | SELL | 2011-02-28 | 2011-03-01 | $31.28 | $156K | -2.4% | -0.7% | -0.7% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.