U.S. stocks whipsawed, with the blue-chip Dow swinging through 1,000 points, before closing lower. Bolstered by strong earnings from artificial intelligence chip giant Nvidia and discount retailer Walmart, stocks opened higher and the Dow climbed 700 points. However, stocks slowly started losing ground after the delayed September jobs report appeared to dash hopes for another rate cut when the Federal Reserve meets next month. At the close, the Dow was down 386.51 points, or 0.84%, at 45,752.26. The tech ...