David R. Emery is Chairman at BLACK HILLS CORP /SD/ (BKH). They have made 23 open-market trades across 2 companies since 2007, most recently 2020-04-21.
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.
5 open-market purchases totalling $6.6M since 2007, against 18 sales. Across 5 scored buys the stock is up 3.1% at ninety days, and 0.3 points ahead of the S&P over the same stretch.
5 scored purchases · one row per filing · discretionary only
| 7d | 30d | 90d | |
|---|---|---|---|
| Accuracy | 40% | 20% | 40% |
| Avg Move | +0.7% | +1.0% | +3.1% |
| Alpha | +3.4% | -0.9% | +0.3% |
| Scored | 5 | 5 | 5 |
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| BKH | SELL | 2020-04-21 | 2020-04-22 | $61.52 | $385K | -5.9% | -7.3% | -5.8% |
| BKH | SELL | 2020-03-25 | 2020-03-25 | $60.00 | $375K | +10.9% | +6.1% | -6.0% |
| BKH | SELL | 2020-02-18 | 2020-02-18 | $85.34 | $533K | -15.4% | -39.8% | -30.6% |
| BKH | SELL | 2020-01-21 | 2020-01-21 | $80.92 | $506K | +1.6% | +3.7% | -22.3% |
| BKH | SELL | 2019-12-18 | 2019-12-18 | $78.02 | $585K | -0.3% | +2.8% | -24.0% |
| BKH | SELL | 2019-11-19 | 2019-11-19 | $75.96 | $570K | -0.7% | +2.9% | +12.5% |
| BKH | SELL | 2019-10-22 | 2019-10-22 | $78.61 | $590K | +1.2% | -1.9% | +3.7% |
| BKH | SELL | 2019-09-25 | 2019-09-25 | $77.31 | $580K | -1.7% | -0.1% | -0.8% |
| BKH | SELL | 2019-08-20 | 2019-08-20 | $77.13 | $578K | -0.6% | -0.6% | -1.4% |
| BKH | SELL | 2019-07-24 | 2019-07-25 | $78.14 | $586K | -2.4% | -1.2% | +0.6% |
| BKH | SELL | 2019-06-25 | 2019-06-25 | $81.58 | $612K | -1.4% | -2.6% | -4.6% |
| BKH | SELL | 2019-05-21 | 2019-05-21 | $76.16 | $571K | +0.6% | +4.6% | +1.3% |
| BKH | SELL | 2019-04-24 | 2019-04-24 | $71.31 | $535K | +4.4% | +8.9% | +9.9% |
| BKH | SELL | 2019-03-19 | 2019-03-20 | $72.03 | $540K | +2.6% | -0.8% | +9.8% |
| BKH | SELL | 2019-02-13 | 2019-02-15 | $70.16 | $301K | +2.2% | +4.7% | +9.0% |
| HR | BUY | 2016-11-10 | 2016-11-14 | $27.66 | $4.0M | +1.9% | -0.5% | +8.2% |
| HR | BUY | 2016-11-09 | 2016-11-10 | $28.84 | $2.0M | +4.6% | +7.4% | +9.3% |
| BKH | SELL | 2012-08-27 | 2012-08-28 | $34.13 | $727K | -1.3% | -0.4% | -0.4% |
| BKH | BUY | 2011-08-17 | 2011-08-19 | $29.70 | $3K | -1.3% | -0.4% | -0.4% |
| BKH | BUY | 2011-06-01 | 2011-06-01 | $30.73 | $31K | -1.3% | -0.4% | -0.4% |
| BKH | SELL | 2009-12-15 | 2009-12-15 | $26.07 | $521K | -1.3% | -0.4% | -0.4% |
| BKH | SELL | 2009-12-10 | 2009-12-10 | $25.68 | $257K | -1.3% | -0.4% | -0.4% |
| HR | BUY | 2007-06-20 | 2007-06-21 | $28.84 | $672K | -0.4% | -1.0% | -1.0% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.