Time to buy is when "everyone" hates the stock. For instance, does anyone realistically think that Ford is going to go bankrupt. No way vested interests would let that happen. Both SBUX and FORD are going back up. SBUX will probably rise faster than FORD, however, unless some "breaking news event" occurs.
Made lots of money buying out of favor stocks that actually have good prospects. The "dumb money" gets out when they should be getting in, and get in when a stock is about to top... go figure!