When a retailer posts nearly $70 billion in revenue in a single quarter — during a period of economic uncertainty, rising tariffs, and shifting consumer behavior — the rest of the retail world takes notice. And every brand owner who has been sitting on the fence about pursuing the Costco channel should be sitting up straight right now. Costco's Q2 2026 sales results  are not just impressive. They are a signal. A loud, unmistakable signal that this channel is not slowing down,