T-Mobile Stock (TMUS) After Hours: What Moved Shares on Dec. 19, 2025—and What to Watch Before the Next Market Open
T-Mobile US, Inc. (NASDAQ: TMUS) finished Friday, December 19, 2025, lower even as the broader market ended the week on a high note. Shares fell 1.77% to close at $196.73, snapping a four-session winning streak and coming on unusually heavy volume. MarketWatch+1 In after-hours trading, TMUS nudged higher—a modest rebound that suggests investors are still weighing a busy mix of catalysts: a fresh analyst price-target cut, holiday-season competitive positioning in wireless, and the mechanical “noise” that often surrounds December’s major options expiration. Public+2MarketBeat+2 One important reality check on timing: U.S. stock markets are closed on Saturday. The next regular session