Starbucks' Stock Just Plunged. Is Now the Time to Invest?

Starbucks just posted a very rare revenue decline. Is the stock plunge an opportunity?Starbucks (SBUX -1.76%) is a premium brand that has become ingrained in many people's daily routine. But the company's recent quarter showed that even the best consumer companies can go through a difficult time. In fact, Starbucks' recent results were downright dreadful.Still, the 50-year-old brand has been through tough times before and has always eventually re-emerged stronger. Will history repeat itself, and is now an o ...