Dow Jones | Nasdaq | Stock Market Live: US stocks trade mixed on Tuesday as easing oil prices support risk appetite ahead of the Federal Reserve’s policy decision. The S&P 500 and Nasdaq gain, while the Dow slips. Investors also track key earnings, with Tesla and chip stocks advancing and Boeing falling after a wider loss. - Peter Andersen, founder of Andersen Capital Management - Brian Mulberry, chief market strategist at Zacks Investment Management