Shares of Best Buy (BBY 0.71%) are up by 83% so far year to date. But with so much uncertainty about the company's ability to stabilize slowing revenue and same-store sales -- and with so many investors viewing this as a turnaround story facing serious headwinds in a disrupted retail landscape -- can this stock growth alone be the basis for an investing thesis? In this video, Motley Fool consumer goods analyst Blake Bos discusses how share price can become disconnected from the fundamentals of a company and talks about the real metrics that investors must focus on in order to know when the turnaround is taking place.