Is Opendoor 2.0 a buy?Opendoor Technologies (OPEN 5.14%) stock has delivered astonishing gains this year as the meme stock of 2025. It's up 430% year-to-date, despite dismal earnings, and investors are excited about its new CEO.It's still cheap, trading at 1.3 times trailing-12-month sales. But a stock is only a bargain if it has significant long-term upside. Otherwise, it's a value trap. Is this an amazing opportunity as Opendoor makes a comeback, or should investors steer clear?Can Opendoor really change ...