Costco Stock After Hours on December 9, 2025: Tariff Lawsuit, Special Dividend Hopes and What to Watch Before the December 10 Open
Costco Wholesale Corporation (NASDAQ: COST) slipped into Tuesday night as one of the most-watched stocks on Wall Street — not because of a big price swing, but because of a rare legal fight with the Trump administration, slowing but still-strong sales, and rising speculation about a special dividend and even a stock split. Here’s what happened with Costco stock after the bell on December 9, 2025, and what traders and long‑term investors should know before the market opens on Wednesday, December 10. Costco stock after the bell on December 9, 2025 Costco shares closed Tuesday at $888.44, up 0.10% on