Corbin J. Robertson III is Chairman & 10% at NATURAL RESOURCE PARTNERS LP (NRP). They have made 39 open-market trades across 8 companies since 2002, most recently 2026-09-16.
24 open-market purchases totalling $11.3M since 2002, against 15 sales. Across 20 scored buys the stock is up 12.4% at ninety days, and 10.1 points ahead of the S&P over the same stretch.
20 scored purchases · one row per filing · discretionary only
| 7d | 30d | 90d | |
|---|---|---|---|
| Accuracy | 45% | 20% | 45% |
| Avg Move | -8.5% | -5.4% | +12.4% |
| Alpha | -5.9% | -5.1% | +10.1% |
| Scored | 20 | 20 | 20 |
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| NOVA | BUY | 2024-11-19 | 2024-11-21 | $3.56 | $125K | +6.6% | -14.7% | -53.2% |
| NOVA | BUY | 2024-11-12 | 2024-11-14 | $3.32 | $565K | +31.2% | -1.7% | -50.1% |
| KLXE | SELL | 2022-03-23 | 2022-03-25 | $7.04 | $164K | -24.6% | -19.4% | -32.0% |
| KLXE | SELL | 2022-03-18 | 2022-03-22 | $7.21 | $1.1M | -22.7% | -19.2% | -26.2% |
| KLXE | SELL | 2022-03-16 | 2022-03-17 | $7.95 | $3.0M | -24.8% | -12.8% | -26.8% |
| KLXE | SELL | 2021-10-01 | 2021-10-05 | $4.88 | $1.5M | -1.7% | +5.9% | -25.7% |
| ?KLXE? | SELL | 2021-09-29 | 2021-10-01 | $4.63 | $120K | N/A | N/A | N/A |
| KLXE | SELL | 2021-09-27 | 2021-09-29 | $4.74 | $698K | +5.8% | -2.9% | -30.8% |
| KLXE | SELL | 2021-09-23 | 2021-09-27 | $4.73 | $485K | -7.4% | -9.9% | -30.9% |
| KLXE | SELL | 2021-09-21 | 2021-09-23 | $4.43 | $252K | -2.9% | -6.7% | -32.0% |
| KLXE | SELL | 2021-09-17 | 2021-09-23 | $4.93 | $188K | -2.9% | -6.7% | -32.0% |
| KLXE | SELL | 2021-09-17 | 2021-09-21 | $4.74 | $158K | +7.0% | +0.2% | -29.8% |
| KLXE | SELL | 2021-09-15 | 2021-09-17 | $5.15 | $155K | -5.0% | -5.4% | -34.4% |
| KLXE | SELL | 2021-09-13 | 2021-09-15 | $5.56 | $416K | -5.8% | -10.4% | -39.8% |
| QES | BUY | 2019-09-13 | 2019-09-17 | $1.95 | $20K | +10.6% | -16.2% | +57.0% |
| QES | BUY | 2019-09-12 | 2019-09-16 | $1.83 | $8K | +2.8% | -7.8% | +57.0% |
| QES | BUY | 2019-09-11 | 2019-09-13 | $1.83 | $8K | -2.6% | -6.3% | +50.8% |
| QES | BUY | 2019-09-10 | 2019-09-12 | $1.69 | $16K | +3.1% | -7.8% | +50.0% |
| QES | BUY | 2019-09-09 | 2019-09-11 | $1.71 | $16K | +16.7% | +5.6% | +50.0% |
| QES | BUY | 2019-09-06 | 2019-09-09 | $1.73 | $24K | +8.3% | +11.9% | +74.4% |
| QES | BUY | 2019-09-05 | 2019-09-06 | $1.62 | $27K | +10.6% | +3.5% | +70.6% |
| QES | BUY | 2018-02-13 | 2018-02-15 | $10.00 | $1.0M | +1.6% | -14.8% | +0.1% |
| NRP | BUY | 2014-12-16 | 2014-12-18 | $9.34 | $93K | -31.1% | -6.3% | -6.3% |
| NRP | BUY | 2014-12-08 | 2014-12-09 | $9.98 | $499K | -31.1% | -6.3% | -6.3% |
| NRP | BUY | 2014-10-10 | 2014-10-10 | $12.02 | $3.3M | -31.1% | -6.3% | -6.3% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.
| "QES" |
| 123,254 |
| — |
| GELQ | 2,496,146 | — |
| ?KLXE? | 8,812 | — |
| Total | $551.3M |
Shares reported on the most recent Form 4, priced at the 2026-09-17 close. 4 holdings could not be priced and are excluded from the total.