Core & Main, Inc. (CNM) stock intrinsic value fair value estimate & owner earnings analysis

Core & Main is a US distributor of the pipes, valves, fittings, storm drainage, fire protection and water meter products used to build and repair water, wastewater and stormwater systems. It sells through more than 370 branches across the United States and Canada to over 60,000 customers, mostly contractors and municipalities. Its largest customer is about 1% of sales and the top 50 together are about 12%. In fiscal 2025 (the year ended February 1, 2026) sales were $7.65 billion: about 44% municipal repair and replacement work, 38% non-residential construction and 18% residential land and lot development. The business earns a steady spread on products it buys and resells and gets paid for local inventory, credit and delivery. It needs very little equipment: capital spending runs at about half of one percent of sales. How we measured earnings. We start from operating cash flow. We strip out swings in inventory, receivables and payables, charge stock compensation as a real cost, and deduct the capital spending needed to keep the branches running. On that basis owner earnings were about $711 million in fiscal 2022, $653 million in 2023, $617 million in 2024 (a 53-week year) and $637 million in 2025. Because the company carries debt, we value the business before interest and then subtract what it owes. Adding back interest gives about $760 million a year of cash from the business in each of fiscal 2022 to 2025 ($777M, $734M, $759M, $757M). We use the median, about $758 million or roughly $3.92 per diluted share, as today's level. The window starts in fiscal 2022, the first full year after the 2021 IPO, which reflects today's larger branch network. Fiscal 2022 was helped by a surge in product prices, but gross margin has held near 27% since then (26.9% in fiscal 2025 and 27.0% in the first half of fiscal 2026), so that level has not reversed. For interest we used reported interest expense rather than gross cash interest, because gross cash interest leaves out the income from the company's interest-rate hedges, and that income already flows through operating cash. Amortisation of acquired intangibles (about $150 million a year) is non-cash and is added back. The branch network and customer relationships it relates to do not wear out the way a patent does, so we charge no separate decay; the risk that acquisitions disappoint is carried in the cases. Growth also has to pay for inventory and receivables. The business ties up about 20 cents of working capital per dollar of sales, and each case deducts that. Recent trend. Cash from the business was essentially flat in fiscal 2025 in total (-0.3%) and up 1.5% per share. Fiscal 2024 had an extra week, and like-for-like daily sales rose 4.8% in fiscal 2025. The first half of fiscal 2026 (to August 2, 2026) showed sales up 1.3%, operating income up 5% ($404M vs $384M) and gross margin steady. The base case therefore starts year one at +1.5%, no faster than the trailing per-share rate. Base case (about $61 per share). Cash from the business grows 1.5% in year one and 2% a year through year ten. The growth we credit is product prices passing through a resale model that earns a steady percentage spread. The record since fiscal 2019 supports that much: sales rose from $3.4 billion to $7.6 billion through price, volume and acquisitions. We do not credit a larger market from federal water infrastructure funding, share gains, new lines such as meter sets and fusible HDPE pipe, or future acquisitions. Each of those is either not yet secured or is bought with cash we do not count. After year ten we assume no further growth. The network keeps earning its year-ten level, because repairing and replacing buried water systems is recurring, essential municipal work. The business is worth about $14.5 billion ($74.80 per share). It owes about $2.65 billion ($13.70 per share), leaving about $11.8 billion ($61.09 per share) for shareholders. Bear case (about $45 per share). The company names housing starts, commercial construction and lower product prices as its main exposures, and 56% of sales depend on new construction. We model one full downturn like the one this business went through in 2008-2010. In that cycle HD Supply, which then owned this waterworks business, saw total sales fall about 24% in a single year (fiscal 2009), hit by declines in residential, commercial and municipal construction and by falling steel and PVC prices. In this case sales fall about 25% over two years, from $7.65 billion to about $5.75 billion, and stay at the bottom for a second year. The spread shrinks with lower pipe prices, and branch costs fall only partly, so cash from the business drops from about $758 million to about $470 million. It recovers over five years to about $720 million and stays there permanently, below today's level, because we assume part of the lost spread never returns. In the early years inventory and receivables shrink and release cash, as they did in fiscal 2023. Even at the trough, cash from the business is more than three times the current interest bill, and the first large term loan is not due until July 2028, so this case does not require a distressed refinancing. The business is worth about $11.4 billion ($59.10 per share). Less $2.65 billion owed, about $8.8 billion ($45.39 per share) is left for shareholders. Bull case (about $86 per share). The company's own levers work: steady volume from municipal replacement demand, new branches in areas where it already operates, and continued price pass-through lift cash from the business 3.5% a year for ten years. After that it grows 1.5% a year, the price pass-through alone. The business is worth about $19.3 billion ($99.70 per share). Less $2.65 billion owed, about $16.6 billion ($85.97 per share) is left. What it owes. At August 2, 2026 the company had about $2.43 billion of long-term borrowings and $312 million of cash. That date is the seasonal peak for receivables and inventory, and the build reverses by winter, so we count net borrowings of about $1.93 billion on a year-end basis. We also count about $720 million owed to former owners under tax receivable agreements ($680 million long-term plus the current portion at fiscal year-end). These agreements pay out 85% of certain tax savings, and the payments are not in operating cash flow. Our cash measure includes the tax savings themselves, so the obligation is subtracted in full. Total: about $2.65 billion. Main maturities: a $1.23 billion term loan due July 2028, a $0.93 billion term loan due February 2031 and a revolving credit line due February 2029. The term loans bear SOFR plus 2.00%. That is close to a normal long-run borrowing cost, so we made no adjustment for cheap or expensive debt. A very cheap interest-rate hedge (0.693% fixed on $700 million) ended in July 2026, and $1.5 billion is now fixed at 3.913% plus the margin through July 2028. That raises reported interest cost by roughly $22 million a year. It lowers reported earnings but does not change what the business is worth before its lenders. How we set the margin-of-safety price. We are fairly sure of the earnings level. Four years of cash from the business sit within about 6% of each other through a price surge, a price decline and an extra-week year, and the business needs almost no equipment to keep running. The worst plausible event is a construction downturn as deep as 2008-2010 that lands while the 2028 term loan is coming due. Even then the business stays well able to pay interest, its customers are spread thin, and its main assets are inventory and receivables that turn into cash as sales shrink. That is why the bear case still leaves about $45 a share. The three things we are most likely to be wrong about are the depth of the next downturn, how much of the spread survives a long period of falling pipe prices, and how much is overpaid for acquisitions; the company bought $741 million of businesses in fiscal 2024 alone. If all three went the wrong way at once, the shares might be worth something in the high $30s. During the holding period the business pays no dividend but spends heavily on buying back its own stock ($257 million in the first half of fiscal 2026), which raises each remaining share's claim on the cash. The margin-of-safety price is $40. For the base case to imply 20% a year from $40, the shares need to be worth about $58 in two years. The base case reaches that, as cash from the business keeps growing and buybacks shrink the share count. If instead the bear downturn arrives first, $40 is still below what the bear case implies the shares are worth through that cycle. The margin-of-safety price is set no higher because the downside if our three biggest uncertainties all go wrong sits in the high $30s, and a higher price would leave no room for that. What could make this wrong. A construction downturn deeper or longer than the bear case. Lasting deflation in pipe prices that permanently compresses the spread. Overpaying for acquisitions: goodwill now stands at about $1.9 billion. Larger payments under the tax receivable agreements if the remaining partnership units are exchanged; the company estimates a full exchange would add about $87 million. On the upside, sustained growth in municipal water spending would be worth more than we credit.