Diamondback Energy vs Occidental Petroleum (FANG vs OXY)
Side by side from their SEC filings: revenue, margins, growth, returns and valuation, plus short interest, insider activity and institutional ownership.
Occidental Petroleum is the larger company by revenue ($21.6B vs $15.0B) and market value ($60.6B vs $54.8B). Diamondback Energy has grown revenue faster over the last 4 fiscal years (+122.7% cumulative vs -16.9%). Occidental Petroleum trades at the lower trailing P/E (17.5x vs 37.3x).
About Diamondback Energy
Diamondback Energy, Inc. is an oil and natural gas company engaged in the exploration, development, and production of oil, natural gas, and natural gas liquids. The company operates primarily in the Midland Basin and Delaware Basin regions. It serves customers involved in the energy sector by supplying these natural resources.
About Occidental Petroleum
Occidental Petroleum Corporation operates in the oil and gas industry. The company is involved in the exploration, production, and marketing of oil, natural gas, and natural gas liquids. It serves customers in North America and internationally through its oil and gas and midstream and marketing segments.
Head to head (FANG FY2025 vs OXY FY2025)
| Metric | FANGFY2025 | OXYFY2025 |
|---|---|---|
| Revenue | $15.03B | $21.57B |
| Revenue growth (YoY) | 35.8% | -2.0% |
| Gross margin | — | — |
| Operating margin | 8.4% | — |
| Net margin | 11.1% | 11.0% |
| Net income | $1.66B | $2.37B |
| Diluted EPS | $5.73 | $1.61 |
| FCF margin | — | 19.0% |
| ROE | 3.9% | 6.5% |
| Long-term debt / equity | 0.32× | 0.56× |
| Market cap | $54.77B | $60.65B |
| P/E | 37.3× | 17.5× |
Fundamentals are from each company’s SEC filings (FANG FY2025, OXY FY2025). ROE is net income over fiscal-year-end equity; long-term debt / equity counts non-current term debt only. P/E and market cap are derived from stored market prices, last retrieved on a rolling basis and typically within the past week.
Five-year trend (as reported)
| Revenue | FY2021 | FY2022 | FY2023 | FY2024 | FY2025 |
|---|---|---|---|---|---|
| FANG | $6.75B | $9.57B | $8.41B | $11.07B | $15.03B |
| OXY | $25.96B | $36.23B | $23.16B | $22.02B | $21.57B |
Peer standing
Where each company ranks among the 61 oil and gas companies, on the same scale. Each figure is ranked only against peers that report it. Percentiles describe position in the distribution, not a rating.
| Metric | FANG | OXY |
|---|---|---|
| Net margin | 11.1%49th percentile of 58 | 11.0%47th percentile of 58 |
| Revenue growth (YoY) | +35.8%78th percentile of 60 | -2.0%39th percentile of 60 |
| ROE | 3.9%40th percentile of 49 | 6.5%48th percentile of 49 |
| P/E | 37.3×94th percentile of 36 | 17.5×77th percentile of 36 |
| Long-term debt / equity | 0.32×39th percentile of 37 | 0.56×67th percentile of 37 |
| Short interest (days to cover) | 1.70d15th percentile of 60 | 2.21d20th percentile of 60 |
Short interest
| FINRA settlement data | FANG | OXY |
|---|---|---|
| Shares sold short | 7.3M | 22.2M |
| Change vs prior settlement | -4.4% | +2.7% |
| Days to cover | 1.70 | 2.21 |
| As of settlement | 2026-09-30 | 2026-09-30 |
Source: FINRA Consolidated Short Interest. FINRA is the owner and source of the FINRA-supplied data; republishing or redistributing it is not permitted. Not presented as a percentage of float. No FINRA endorsement of this product is implied.
Insider activity (last 90 days)
| Form 4 activity (codes P/S) | FANG | OXY |
|---|---|---|
| Buys | 0 | 0 |
| Sells | 19 ($3.76B) | 0 |
Non-derivative purchases (code P) and sales (code S) reported on SEC Form 4, which may be open-market or private (grants, exercises and tax withholding excluded). For context, about 15% of covered companies saw any reported insider purchase (code P) in a 90-day window.
Held by the same investors
7 tracked 13F managers hold both Diamondback Energy and Occidental Petroleum as of their latest quarterly filings: AQR Capital Management, Citadel Advisors, D. E. Shaw, Gotham Asset Management, Millennium Management, Renaissance Technologies, Two Sigma Investments. See which superinvestors hold your own portfolio with the smart money checker.
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Data sourced from SEC EDGAR. Figures are as-reported and may be unaudited or restated; verify against the source filings before relying on them. Comparisons are descriptive (higher or lower on a reported figure), not a rating or a recommendation. Informational only. Not investment advice.