US STOCKS-Wall St gains as ECB prepares to flood markets By: Reuters: Company News January 22, 2015 at 16:37 PM EST * Indexes up: Dow 1.5 pct, S&P 500 1.5 pct, Nasdaq 1.8 pct (Updates to late afternoon) Read More >> Related Stocks: American Express Avon Products F5 Networks Starbucks Corp