U.S. stock-market benchmarks traded higher at the start of Wednesday's session, as investors waited for details from President Joe Biden on a multitrillion dollar infrastructure spending plan that's expected to include higher taxes on corporations. The S&P 500 rose 0.4% to 3,973. The Dow Jones Industrial Average advanced 99 points, or 0.3%, to 33,166. The Nasdaq Composite climbed 0.7% to 13,132. The infrastructure plan comes less than a month after the passage of a $1.9 trillion package of COVID relief spending. The immense fiscal support deployed by Washington has helped boost inflation expectations and bond yields. Shares of Walgreens Boots Alliance Inc. $(WBA.AU)$ were up over 2% after the pharmacy chain reported fiscal second-quarter results and raised its outlook for fiscal 2021.