BufeticoIn the six months ended June 30, 2026, Builders FirstSource reported a net loss of $51.3 million. The company supplies lumber, trusses and windows to professional homebuilders across the United States. The same quarterly filing shows $155.5 million of cash from operations, the money the business itself brought in after paying its day-to-day costs.
Most readers take that pair as proof that the loss is an accounting matter and the business underneath is fine. I made a version of that argument myself, and three days later I corrected it in public. The line I missed was printed on the cash flow statement the whole time.
The statement of cash flows, as the filings call it, tracks where the cash came from during the period and where it went. It has three sections (operating, investing and financing), and together they account for the whole change in cash over the period.
From the loss to the cash
The operating section starts at the net loss of $51.3 million and gets to cash in two steps.
The first adds back charges that lowered profit without any cash leaving the company. The largest is depreciation and amortization, $298.4 million for the half, which is the cost of long-lived assets spread across the years they are used. Of that, $144.9 million was amortization of intangible assets, the accounting cost of customer relationships and other assets that came with companies it acquired. The price was paid when each deal closed, and the expense keeps arriving with no check attached.
The second step is working capital, the cash tied up between paying suppliers and getting paid by customers. Receivables, what customers owe for deliveries they have not paid for yet, rose by $236.1 million. Inventory rose by $170.8 million. Both consume cash. Accounts payable, the bills the company has received and not yet paid, rose by $318.2 million, and that adds cash, because an unpaid bill is money still sitting in the company’s account.
The payables increase is larger than the whole $155.5 million, so without the suppliers waiting to be paid, the operations used cash.
What went back into the business
The investing section used $107.1 million. The two main lines were $84.8 million for property, plant and equipment and $25.9 million for acquisitions.
Spending on property and equipment sits on one line, with no split between what kept the business at its current size and what made it bigger, and the cash left over means something different depending on that split. Bufetico separates the two when it values a company, and the exact rule for drawing that line is part of the model I keep private.
Who paid for the rest
Financing used another $164.5 million. The company drew $599.0 million on its revolving credit line, repaid $434.0 million, and spent $303.5 million repurchasing its own shares. Cash on hand fell from $181.8 million at the end of December to $65.7 million at the end of June.
Operations brought in $155.5 million and investment took $107.1 million of it, so most of the $303.5 million of share repurchases came out of the credit line and the cash already in the bank.
Where this breaks
Every working capital line measures how much a balance moved during the period, leaving out whatever arrived with an acquisition. In the first half of 2025, payables at Builders FirstSource rose by $126.6 million. Over the full year 2025 they fell by $167.2 million. The suppliers who carried the spring had been paid by December.
The first half of 2021 looked like the reverse of 2026. The same company reported net income of $669.8 million while its operations used $203.8 million of cash, mostly because receivables rose by $753.3 million and inventory by $840.3 million. For the full year 2021, operations produced $1,743.5 million.
Bufetico reads cash from operations for thousands of companies, and a single period of it misleads, because working capital follows the direction of sales. A growing company ties cash up in receivables and inventory, as this one did in 2021, and a shrinking one lets it back out, so for a while a business in decline can show better operating cash than one that is growing. A screen that reads one period ranks the shrinking business higher. The cash tests I run look at the shape of the series across years, and one half-year is a single point in it.
Taking the payables out, as I did above, is unfair to companies that negotiate longer payment terms with their suppliers and keep them for years. For them, a large payables balance is part of how the business runs, and stripping out its increases every period penalizes a company for being good at it. Telling a company that leans on its suppliers for one season from one that has negotiated longer terms takes the next several filings.
The credit line sits under financing, and the credit from suppliers, which grew by more in the half, sits under operations.