 A lot of attention has been on one stock, AI chipmaker Nvidia. Portfolios without it may not have done as well. NASDAQ futures up slightly again this morning. S&P futures are up by just a hair. In the twice-bitten, thrice-shy category of business news today, word is of a tentative agreement for the media company Skydance to buy Paramount, owner of CBS, the Paramount Studios, and much more.