Costco Stock (COST) After Hours Dec. 12, 2025: Post‑Earnings Moves, Analyst Forecasts, and What to Watch Before the Next Market Open
Costco shares closed Dec. 12 near $884 after swinging to the high-$860s during the session, then steadied at $884.5 in after-hours trading. The moves followed fiscal Q1 2026 results showing net sales of $65.98 billion, up 8.2% year over year, and net income of $2 billion. Comparable sales rose 6.4%. The stock’s muted reaction reflected concerns over valuation despite the earnings beat.