Opendoor is undergoing a significant business shift; there are potential rewards if it succeeds and substantial risks if it fails.Investing is always a balancing act between risk and reward. The problem, of course, is that if you take too much risk with an investment, you could end up with huge losses. This is the investment situation today with Opendoor Technologies (OPEN 10.97%). A new CEO, a shift in the company's business approach, and a significant rise in the share price indicate that Opendoor is only ...