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