US STOCKS-Wall St rallies on China stimulus ahead of tech earnings By: Reuters: Company News April 20, 2015 at 17:00 PM EDT * Indexes ends up: Dow 1.17 pct, S&P 0.92 pct, Nasdaq 1.27 pct (Updates IBM extended-trade prices, adds , detail on volume) Read More >> Related Stocks: Apple Intel Corp International Business Machines Netflix