Costco (COST) is one of the most reliable stocks in the world. They may have a P/E in the mid-50s, but the market figures there are enough buyers of industrial-sized mayonnaise vats to keep the party going.
Even so, on the heels of its earnings report this afternoon, COST is slipping a little. It had a weird spike at first, as if people had the press release flipped upside-down or something, but in short order COST went from a big spike up to a small spike down.