Alphabet (GOOG) Stock After Hours Today (Dec. 17, 2025): Google’s AI-Chip Push, Gemini 3 Flash Rollout, and What to Watch Before Thursday’s Market Open
Alphabet Inc.’s Class C shares (NASDAQ: GOOG) finished a volatile Wednesday session sharply lower and then turned quiet in early after-hours trading—setting up a macro-heavy Thursday open that could matter as much as any company headline. After the closing bell on Dec. 17, GOOG was essentially unchanged in extended trading at about $298.05, after ending the regular session at $298.06 (down 3.14% on the day). Investing.com+1 That price action came amid a broader tech pullback tied to renewed anxiety over the cost—and the financing—of the AI buildout, even as Alphabet continued to generate its own fresh AI momentum headlines spanning