Wall Street equities mostly rallied on Friday, reversing course after trillions of dollars of world stock market value were wiped out over fears that Democratic election victories this week would bring tighter US regulations for the AI industry. The benchmark S&P 500 and the Nasdaq ?finished higher, with technology, communication services and industrials stocks driving gains. The Dow ended lower. All three indexes notched weekly losses following a brutal selloff in the prior session. The Dow Jones Industrial Average fell 0.46%, the S&P 500 rose 0.31%, and the Nasdaq Composite gained 1.1%. The Philadelphia Semiconductor Index was up 4.2% after…