Stocks are mixed on Wall Street, with enthusiasm checked

Stocks are mixed in subdued afternoon trading on Wall Street Tuesday, as investors wait to see how well the lifting of lockdowns around the world goes.
The S&P 500 and other U.S. indexes were flipping between small gains and losses, following mixed performances in Europe and Asia. Treasury yields were down slightly, but a measure of nervousness in the U.S. stock market also eased to its lowest level in two months.Governments around the world and in many U.S. states have begun gradually lifti