Steven E. West is Director at Diamondback Energy, Inc. (FANG). They have made 10 open-market trades across 3 companies since 2017, most recently 2026-05-20.
CIK 0001190898
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 $3.1M since 2017, against 5 sales. Across 5 scored buys the stock is down 6.5% at ninety days, and 7.2 points behind the S&P over the same stretch.
5 scored purchases · one row per filing · discretionary only
| Ticker | Shares | Value |
|---|---|---|
| FANG | 5,466 | $1.1M |
| VNOM | 22,093 | $994K |
| RTLR | 36,356 | $553K |
| Total | $2.7M |
Shares reported on the most recent Form 4, priced at the 2026-05-21 close.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.
| 7d | 30d | 90d | |
|---|---|---|---|
| Accuracy | 40% | 60% | 20% |
| Avg Move | -1.9% | -2.6% | -6.5% |
| Alpha | -2.8% | -3.8% | -7.2% |
| Scored | 5 | 5 | 5 |
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| FANG | SELL | 2026-03-18 | 2026-03-19 | $188.35 | $2.3M | +3.9% | -3.6% | -2.5% |
| FANG | BUY | 2024-12-16 | 2024-12-17 | $162.66 | $976K | -0.0% | +11.2% | -5.0% |
| FANG | SELL | 2023-08-10 | 2023-08-14 | $150.65 | $1.2M | +0.9% | +5.5% | +7.1% |
| VNOM | SELL | 2022-02-25 | 2022-03-01 | $28.37 | $1.7M | -5.1% | -2.2% | +11.0% |
| RTLR | SELL | 2021-11-08 | 2021-11-10 | $11.47 | $417K | -9.2% | -4.1% | +8.8% |
| FANG | SELL | 2021-11-08 | 2021-11-10 | $117.43 | $998K | -2.0% | +3.3% | +15.6% |
| RTLR | BUY | 2019-05-28 | 2019-05-29 | $17.50 | $500K | +0.4% | +2.8% | -8.1% |
| VNOM | BUY | 2017-07-21 | 2017-07-25 | $14.75 | $909K | +4.7% | +1.1% | +8.6% |
| VNOM | BUY | 2017-05-17 | 2017-05-19 | $17.83 | $499K | -5.2% | -10.9% | -11.0% |
| FANG | BUY | 2017-05-17 | 2017-05-19 | $103.45 | $248K | -9.3% | -17.1% | -16.9% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.