One of the world's best-performing stocks of all time has been a dud in recent months. Shares of Amazon ( AMZN +0.20%) plunged after the company announced its fourth-quarter results on Feb. 5, 2026.

FRANKFURT: German start-up Polarise plans to build a new 30-megawatt artificial intelligence data centre that would double Germany's domestically-run computing capacity as European nations push to ...