Oil and gas producer Diamondback Energy (NASDAQ: FANG) reported Q2 CY2026 results beating Wall Street’s revenue expectations, with sales up 51.2% year on year to $5.56 billion. Its non-GAAP profit of $6.48 per share was 8.3% above analysts’ consensus estimates.

Is now the time to buy Diamondback Energy? Find out by accessing our full research report, it’s free.

Company Overview

Sporting one of Wall Street's most memorable ticker symbols, Diamondback Energy (NASDAQ: FANG) drills for and produces oil and natural gas from underground rock formations in the Permian Basin of West Texas and New Mexico.

Revenue Growth

Cyclical industries such as Energy can make mediocre companies look great for a time, but a long-term view reveals which businesses can actually withstand and adapt to changing conditions. Over the last five years, Diamondback Energy grew its sales at an incredible 33.9% compounded annual growth rate. Its growth surpassed the average energy upstream and integrated energy company and shows its offerings resonate with customers, a great starting point for our analysis.

Within Energy, a singular timeframe, even if it’s quite long-term, only sheds light on how well a company rode the last commodity cycle. To better assess whether a company compounds through cycles, we validate our view with an even longer, ten-year view. Diamondback Energy’s annualized revenue growth of 44.7% over the last ten years is above its five-year trend.

While looking at revenue is important, it can also introduce noise around commodity prices and M&A. Analyzing drivers of revenue, on the other hand, highlights what is happening inside the asset base and whether the economic footprint of a company is expanding. Over the last two years, Diamondback Energy’s oil production averaged 40.8% year-on-year growth while its natural gas production averaged 60.2% year-on-year growth.

This quarter, Diamondback Energy reported magnificent year-on-year revenue growth of 51.2%, and its $5.56 billion of revenue beat Wall Street’s estimates by 13.5%. This quarter, Diamondback Energy reported year-on-year Oil production growth of 5.9%.

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Adjusted EBITDA Margin

Diamondback Energy has been a well-oiled machine over the last five years. It demonstrated elite profitability for an upstream and integrated energy business, boasting an average EBITDA margin of 71.8%.

Analyzing the trend in its profitability, Diamondback Energy’s EBITDA margin decreased by 11.2 percentage points over the last year. This raises questions about the company’s expense base because its revenue growth should have given it leverage on its fixed costs, resulting in better economies of scale and profitability.

In Q2, Diamondback Energy generated an EBITDA margin profit margin of 63.8%, down 2.6 percentage points year on year. This contraction shows it was less efficient because its expenses grew faster than its revenue. This adjusted EBITDA fell short of Wall Street’s estimates.

Cash Is King

Adjusted EBITDA shows how profitable a company’s existing “rock” is before financing and reinvestment, while free cash flow shows how much value remains after paying to replace those wells. Because production declines over time, strong EBITDA can coexist with weak FCF if drilling is expensive or declines are steep. FCF therefore captures both operating efficiency and the cost of sustaining production.

Diamondback Energy has shown terrific cash profitability, driven by its lucrative business model that enables it to reinvest, return capital to investors, and stay ahead of the competition. The company’s free cash flow margin was among the best in the energy upstream and integrated energy sector, averaging an eye-popping 37.9% over the last five years.

Absolute FCF margin levels matter but so does stability of free cash flow. All else equal, we’d prefer a 25.0% average free cash flow margin that is quite steady no matter how commodity prices behave rather than extremely high margins when times are good and negative ones when they’re tough.

Diamondback Energy’s ratio of quarterly free cash flow volatility to WTI Crude price volatility over the past five years was 3 (lower is better), indicating unusually strong insulation from commodity swings. This stability supports superior capital access in downturns and positions Diamondback Energy to act as a consolidator when weaker peers are forced to retrench.

You may be asking why we wait until the free cash flow line to perform this stability analysis versus commodity prices. Why not compare revenue or EBITDA to WTI Crude prices in the case of Diamondback Energy? Because what ultimately matters is not how much revenue or profit you earn when prices are high but how much cash you can generate when prices are low. Free cash flow is the superior metric because it includes everything from hedging prowess to growth and maintenance capex to management behavior during good times and bad.

Diamondback Energy’s free cash flow clocked in at $2.59 billion in Q2, equivalent to a 46.6% margin. This result was good as its margin was 24.5 percentage points higher than in the same quarter last year. Its cash profitability was also above its five-year level, and we hope the company can build on this trend.

Key Takeaways from Diamondback Energy’s Q2 Results

We liked that Diamondback Energy beat analysts’ revenue expectations this quarter. On the other hand, its EBITDA missed. Overall, this print was mixed. The market seemed to be hoping for more, and the stock traded down 1.3% to $195.97 immediately after reporting.

Is Diamondback Energy an attractive investment opportunity at the current price? The latest quarter does matter, but not nearly as much as longer-term fundamentals and valuation, when deciding if the stock is a buy. We cover that in our actionable full research report which you can read here (it’s free).