U.S. equities finished mostly mildly lower last week amid mixed takeaways on chipmaker earnings and concerns over Federal Reserve independence. Bellwether AI chipmaker Nvidia handily beat analysts’ topand bottom-line forecasts while its revenue forecast slightly trailed the highest so-called “whisper forecasts.” Even so, the PHLX Semiconductor SOX chipmaker Index tumbled 3% on Friday, weighing on broader market sentiment. Meanwhile, President Trump sought to fire Fed Governor Cook over alleged personal mortgage fraud.