Palantir (PLTR) After-Hours on December 8, 2025: AI Deals, Insider Selling and Forecasts to Watch Before the December 9 Open
Palantir Technologies Inc. (NYSE: PLTR) ended Monday’s session with only a small price move, but under the surface the story is anything but quiet. After the bell on December 8, 2025, traders are weighing blockbuster AI growth, rich new partnerships, aggressive insider selling and sharply divided forecasts as they position for the December 9 market open. Below is a concise, Google‑News‑ready wrap of what happened to Palantir stock after the bell on Dec. 8 and what investors should know before trading resumes on Tuesday. 1. PLTR price action on December 8, 2025 – regular session and after hours Regular session