Wall Street opens higher, banks gain on rates speculation

Minutes of the Federal Reserve's April meeting suggested a June rate hike had not been ruled out, surprising investors who had thought the Fed would stand pat until the end of the year. "Investors are looking for direction in terms of the health of the economy and the Fed's next move. Several Fed officials struck hawkish tones in separate speeches on Monday, calling for two-three rate hikes in 2016 if supported by economic data.