Vertiv (VRT) Stock After Hours on Dec. 12, 2025: Why Shares Fell, What Analysts Forecast Next, and What to Watch Before the Next Market Open
After the bell Friday, Vertiv Holdings Co. closed sharply lower and then stabilized modestly in after-hours trading—an important setup for sentiment heading into next week. Note: Dec. 13, 2025 is a Saturday, so U.S. stock markets are closed; the next regular U.S. session begins Monday, Dec. 15, 2025.