It was a down week on Wall Street — until Friday, when dovish commentary from Jerome Powell the markets took as a strong rate cut signal pulled most stocks into green territory. As for stock stories, Meta Platforms (META) is seeking to build out Llama through Alphabet's (GOOGL) Google Cloud after it reportedly froze A.I. hiring. Nvidia (NVDA) moved on developments around a chip it's building for China ahead of earnings next week. Sam Vadas runs through the trading week's biggest stories.