In the ten quarterly reports Riot Platforms (NASDAQ: RIOT) filed from the first quarter of 2024 to the second quarter of 2026, operating cash flow was negative in every single quarter, about −$1.10bn in total. Since the second quarter of 2025 the company has received about $1.27bn from selling bitcoin, $443M of it in the second quarter of 2026 alone. Put the two numbers side by side and the first reaction is usually "mining loses money and the company survives by selling coins." Half of that is right. The other half is an illusion created by accounting classification. This piece is about the classification, not about valuation.
Line one: why reported operating cash flow is negative by construction
A miner recognises revenue by booking the coins mined each day at the spot price. Coins are not cash, so in the reconciliation from net income to operating cash flow the statement strips out the full amount of "revenue recognized in bitcoin." For Riot in the second quarter of 2026 that line was −$113.7M, exactly the quarter's mining revenue. After that deduction the revenue side of operating cash flow holds only the engineering and data-center segments (about 35% of total revenue that quarter), while the cost side carries all of the power, labour, corporate expense, interest and working-capital movements. Unless the company sells coins in the same quarter and books the proceeds in operating activities, operating cash flow is roughly a third of revenue paying for all of the cash costs. It is negative by construction, and a higher bitcoin price or more coins mined does nothing to shrink it.
Line two: where sale proceeds land depends on how management classifies the holdings
In 2023 and early 2024 Riot's filings described bitcoin as "sold nearly immediately after receipt," and the proceeds appeared in operating activities (in 2024 there was a single sale, $9.5M in the first quarter). At the end of 2024 the company decided to stop selling production and to hold bitcoin as a non-current asset; from then on sale proceeds moved to investing activities, and since sales resumed in the second quarter of 2025 every quarter's "Proceeds from sale of bitcoin" sits in that section. The classification follows management's designation of the holdings, both treatments comply with the standard, and the consequence for a reader is large: the same coin sold at the same price lifted operating cash flow in early 2024 and becomes an investing inflow from 2025 on. Riot's investing activities showed a net inflow of $357M in the second quarter of 2026 because $443M of coin sales more than covered $85.9M of capital spending.
Line three: two adjusted measures that answer different questions
Combining the two lines gives two cash measures that should be read together because they answer different questions. The first is "operating cash flow plus proceeds from bitcoin sales," which answers how much cash the company actually received; for Riot this turned positive from the third quarter of 2025 and was $353M in the second quarter of 2026. The second is "operating cash flow plus the value of coins mined in the quarter," which answers how much cash the operation itself would generate if every coin were sold as mined; that figure was only $23.6M in the same quarter and about $12.7M across the ten quarters. In that quarter the two differ by about fifteen times, and the gap is the company converting inventory accumulated in earlier quarters into cash. The first measure tells you where the cash came from; the second tells you whether the operation is self-funding. Either one on its own tells an incomplete story.
A non-GAAP figure that is often read as an operating metric
Riot's earnings releases report "Adjusted EBITDA": +$495M in the second quarter of 2025, −$503M in the fourth quarter of 2025, −$69.7M in the second quarter of 2026. The company's definition adds back interest, tax, depreciation and amortisation, stock compensation, impairments and one-off items such as settlements, but does not remove the change in fair value of bitcoin. Riot early-adopted ASU 2023-08 from 2023, so its holdings are measured at fair value with the change running through the income statement, and the "adjusted" figure swings with the bitcoin price. Stripping the fair-value change as well leaves operating EBITDA of about $155M across the ten quarters, roughly $15.5M a quarter, against depreciation and amortisation of about $75M a quarter. There is no ready-made line for this in the filings; it has to be built from the reconciliation table in the earnings release minus the fair-value line on the income statement, and of the readings in this piece it is the only one that does not deform when the coin price moves.
Where to verify it in the filings
Three places suffice: the reconciling item "Revenue recognized from bitcoin mined" on the 10-Q cash flow statement (the negative of each quarter's mining revenue); "Proceeds from sale of bitcoin" in investing activities (from the second quarter of 2025); and the 10-K accounting-policy paragraph on whether bitcoin is held as a non-current asset and how sale proceeds are classified. The XBRL tags are CryptoAssetMining, CryptoAssetSale and NetCashProvidedByUsedInOperatingActivities, and the SEC companyfacts endpoint returns the quarterly series directly. When comparing miners, check first where each company books its sale proceeds, then compare operating cash flow; otherwise a classification difference reads as an operating difference.
This is a standing step in our work on miners and on "miner to data centre" names. The full segment breakdown, coin ledger, cost-per-coin series, twelve-month cash ledger and three-scenario valuation are in the Riot Platforms company deep dive; the method is described in the research guide; related basis questions on the same value chain are covered in IREN's two sets of books and where AAOI's ATM proceeds went.
Research content; not investment advice.