Walmart Stock (WMT) After the Bell Dec. 23, 2025: Shares Dip as Formula Lawsuit Risk Returns, While Ads Growth Supports the Long View — What to Know Before the Dec. 24 Market Open
Walmart Inc. shares (WMT) ended Tuesday’s session lower and stayed soft in early after-hours trading, even as the broader U.S. market pushed to a fresh record close in a holiday-thinned week. The move comes as investors weigh two competing narratives: near-term headline risk tied to the ByHeart infant formula investigation and litigation, versus Walmart’s longer-term push to expand higher-margin profit engines like advertising and membership income. StockAnalysis+2Reuters+2 Below is what happened after the bell on Tuesday, December 23, 2025, what dominated today’s analysis and forecasts, and what to watch before markets open on Wednesday, December 24, 2025—a shortened trading session