T-Mobile Stock After Hours (TMUS) on Dec. 18, 2025: Shares Hover Near $200 as Goldman Cuts Target — What to Watch Before Friday’s Open
T-Mobile US, Inc. (NASDAQ: TMUS) finished Thursday’s session (Dec. 18, 2025) modestly higher, then traded slightly softer in after-hours dealing — a quiet end to the day on the tape, but not a quiet day for the narrative around the U.S. wireless sector. Below is what moved (and didn’t move) T-Mobile stock after the bell, plus the key headlines, analyst updates, and market catalysts to watch before the market opens Friday (Dec. 19, 2025). TMUS after-hours: where T-Mobile stock stands tonight T-Mobile shares closed the regular session at $200.27, up 0.45% on the day, after trading between $199.19 and $202.37.