Alexander D. Stuart is Director at Black Stone Minerals, L.P. (BSM). They have made 5 open-market trades across 1 company since 2015, most recently 2026-10-02.
CIK 0001639921
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 $831K since 2015, never a sale. Across 5 scored buys the stock is up 3.5% at ninety days, and 2.2 points ahead of the S&P over the same stretch.
5 scored purchases · one row per filing · discretionary only
| Ticker | Shares | Value |
|---|---|---|
| BSM | 2,041,733 | $30.7M |
Shares reported on the most recent Form 4, priced at the 2026-10-05 close.
| 7d | 30d | 90d | |
|---|---|---|---|
| Accuracy | 20% | 40% | 80% |
| Avg Move | -2.8% | +1.2% | +3.5% |
| Alpha | -0.8% | +1.8% | +2.2% |
| Scored | 5 | 5 | 5 |
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| BSM | BUY | 2018-03-06 | 2018-03-06 | $17.43 | $261K | +1.5% | -2.0% | +4.8% |
| BSM | BUY | 2017-06-09 | 2017-06-09 | $16.00 | $298K | -5.1% | -2.3% | +6.4% |
| BSM | BUY | 2017-03-02 | 2017-03-06 | $17.51 | $75K | -1.6% | -2.1% | -6.1% |
| BSM | BUY | 2015-08-27 | 2015-08-31 | $14.95 | $100K | -4.3% | +6.2% | +6.2% |
| BSM | BUY | 2015-08-21 | 2015-08-25 | $13.71 | $96K | -4.3% | +6.2% | +6.2% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.