Western Digital (WDC) Stock After Hours on Dec. 22, 2025: Nasdaq-100 Debut, Today’s Headlines, Analyst Forecasts, and What to Watch Before Tuesday’s Open
Western Digital Corporation (NASDAQ: WDC) is ending Monday’s session in the spotlight—but not for a simple “up day.” The stock closed regular trading on Dec. 22 at $176.76, down 2.39%, and then held roughly steady in after-hours action. Finviz+1 Why the heightened attention? Today was Western Digital’s first session as a newly added member of the Nasdaq-100, a structural change that can influence liquidity, passive flows, and short-term volatility—especially during a holiday-shortened week. Investing.com+1 Below is a detailed, news-driven breakdown of what happened after the bell on 22.12.2025, what’s driving the narrative right now, and what to keep on the