Thermo Fisher Scientific Stock (TMO) After Hours: Key News, Analyst Forecasts, and What to Watch Before the Market Opens on Dec. 19, 2025
Thermo Fisher Scientific Inc. (NYSE: TMO) finished Thursday’s session (December 18, 2025) essentially flat and is showing little urgency in post-market trading—setting up a “watch the catalysts” kind of setup heading into Friday’s open (December 19, 2025). The stock closed at $562.39, down just 0.03% on the day, while U.S. equities broadly pushed higher—an important context for investors evaluating whether the name is lagging, consolidating, or simply waiting for the next data point. FinanceCharts+1 After the bell, Thermo Fisher remained steady, trading around $562.40 with modest extended-hours volume reported. MarketWatch Below is what matters right now—the day’s price action, the