Diamondback Energy, Inc. FANG

Key data

The business

Diamondback is a pure-play Permian oil producer, one segment, upstream, drilling the Wolfcamp, Spraberry and Bone Spring rock across the Midland and Delaware basins of West Texas. It sells three things: crude oil, which is most of the money and prices off West Texas Intermediate; natural gas, which prices at the local Waha hub; and natural gas liquids. The 2024 Endeavor merger roughly doubled the company and made it the largest independent operator dedicated to the Permian, sitting on a contiguous block of low-cost acreage. Its listed minerals arm, Viper, keeps bolting on royalty interests, the Sitio deal in August 2025 and Riverbend in July 2026. The moat is simple and real: some of the cheapest barrels in North America, so Diamondback keeps making money at oil prices that sink higher-cost drillers. The thing to hold in your head is a barrel of Midland crude and the pipe that gets its gas out.

The numbers

Two forces run through the last five quarters: oil prices swinging the top line, and a large fourth-quarter 2025 writedown gutting reported profit.

The inflection is Q2 2026: revenue up 31% from the prior quarter on higher realized oil prices, and net income back to $1.9B. Adjusted EPS of $6.48 beat the $6.08 the Street looked for, the second straight quarter above estimates after missing in Q1 2026. But two quarters before it the story was ugly, an impairment took Q4 2025 to an operating loss and Q1 2026 to eight cents.

Revenue more than doubled since 2021, almost all of it Endeavor. But per-share earnings went the other way, from $24.61 in 2022 to $5.73 in 2025, because the merger roughly doubled the share count and the 2025 writedown erased a year of profit. What did not fall is cash: the company threw off about $6.5 billion of free cash on $17 billion of sales over the past year, a 12% yield on the whole company.

Here is the tension worth the memo. On reported earnings the stock looks dear at 39 times, and the screens show it that way. On cash it costs about nine times, near the bottom of its range since 2021, with net debt at a manageable 1.7 times cash earnings and falling fast. The market is pricing the GAAP number and the noise inside it; the cash says something cheaper. The print that settles it is the next quarter's free cash flow and what oil does to realizations.

Management

The insider tape looks alarming and mostly is not: $4.5 billion sold over twelve months, zero bought. Almost all of it is SGF FANG Holdings, the Stephens family vehicle that received stock in the Endeavor merger, selling down an inherited megastake in two roughly $2 billion blocks; plan status is not disclosed on the filings. That is a former owner monetizing, not operators losing faith, and it should be read apart from officer conviction. Kaes Van't Hof, CEO since January 2025 under founder-chairman Travis Stice, runs a stated return-of-capital framework but chose debt over dividends-plus-buybacks in the first half, taking long-term debt down about $2.7 billion since year-end. That is the right call at these leverage levels.

How it fails or surprises you

Oil and the Waha gas trap. The whole model rides oil above the low-cost line and gas that clears at a real price. This half-year, gas near the wells again sold at negative Waha prices on Permian takeaway constraints that have not eased. If WTI slips toward the $50s while Waha stays broken, realized prices compress from both ends and the cash multiple stops looking cheap. Watch quarterly oil realizations and the Waha basis line.

The earnings that vanished. FY2025 net income was $1.7 billion against $3.3 billion the year before, with a roughly $1.5 billion loss in Q4 2025. If those impairments are not one-time noise but reserves being rewritten down at lower long-run prices, the cheap-on-cash story is a mirage and the 39x GAAP number is the honest one. The print that decides it is the next impairment line and any reserve revision in the Q3 filing.

Waha relief and a cheap buyback (right tail). New Permian gas pipelines are being contracted and built; when takeaway opens, Waha differentials snap back and gas realizations jump with no extra drilling. Pair that with management buying back stock at nine times free cash while the Street stares at the GAAP multiple, and per-share cash compounds quickly. The market pays nothing for this today. Watch the buyback pace once debt clears their target.

Closing thoughts

The Q3 free cash flow number and the reserve note in that filing settle whether the 2025 impairments were noise or permanent writedowns. The screens and a fair number of funds see 39 times earnings and $4.5 billion of insider selling and move on; the cash statement sees six and a half billion dollars of free cash at nine times, the low end of the company's own history, with leverage falling. Your read beats theirs only if the impairments really were noise, and Q3 free cash flow plus the reserve note is where that gets confirmed or denied. The fatter tail is up: at this cash multiple the downside is largely a cyclical oil dip the balance sheet can now absorb, while a Waha fix and continued buybacks are free options. What is genuinely at risk is a permanent reserve markdown, which would validate the ugly GAAP print.

The bet is still that oil stays high enough for the low-cost Permian barrels to keep producing cash, they keep pumping and paying down the debt from the Endeavor deal, and the natural gas coming up alongside the oil stops selling for less than nothing. It breaks if oil realizations and the Waha gas price both roll over at once, and the pair to watch is quarterly oil realizations against net debt: if the first falls while the second stops falling, the story is wrong.