The stock market rally had a wild, divergent week. The indexes were solidly lower at midweek. But techs then boomed as Nvidia (NVDA) skyrocketed, sending chips and artificial intelligence plays soaring. Meanwhile, optimism about a debt-ceiling deal returned late in the week. Still, the overall action for the week was mixed, with breadth at times stunningly anemic and a number of leading stocks struggling. X Dow Jones futures will open Sunday evening, along with S&P 500 futures and Nasdaq futures. Debt-ceiling talks remain in focus over the holiday weekend, amid signs that an agreement is taking shape. Tesla (TSLA), Netflix...