Costco Stock (COST): What Investors Need to Know Before the Market Opens on December 8, 2025
Costco Wholesale Corporation (NASDAQ: COST) heads into the new trading week in an unusual position: strong sales momentum and robust membership trends on one side, but a fresh lawsuit against the Trump administration, slowing multi‑year U.S. sales growth, and a still‑rich valuation on the other. As of the last close, Costco shares traded around $894.68, modestly below recent highs and roughly flat to slightly negative for 2025, even as the S&P 500 is up in the mid‑teens percentage range this year. MarketWatch Below is a concise pre‑market briefing for Monday, December 8, 2025, summarizing the key news, forecasts, and analysis