Since the company went public back in the early 1990s, Starbucks Corporation (NASDAQ:SBUX) shareholders have experienced amazing success: returns of over 11,000% for anyone who was willing to hold for the whole time!

But that's the past, and the stock market is a future-looking machine.  The Motley Fool's Brian Stoffel decided to make Starbucks one of the cornerstones of his retirement portfolio last year. As is his practice, now is the time of year when he reviews all of his stock holdings to determine which to keep and which to sell.

In the video below, Brian goes over the two broad concerns that investors have raised with Starbucks stock, and what he thinks about those concerns.