Western Digital Stock (WDC) After Hours Today, Dec. 19, 2025: Nasdaq-100 Inclusion Looms—What to Know Before the Next Market Open
Western Digital Corporation (NASDAQ: WDC) ended Friday’s session (19.12.2025) with momentum—and then kept drifting higher after the closing bell as traders positioned for a major technical catalyst: the company’s pending addition to the Nasdaq-100 Index, effective before the market opens