A flawed business model should keep investors away from this stock.

The rally in Opendoor (OPEN) comes on the heels of a long, grinding decline. Taking a look at the company's underlying business that can justify breaking the $2.49 level and going higher.

General Motors tops earnings estimates while Opendoor Technologies extends gains after closing up 43% on Monday.

Opendoor Stock Surges Again. Steer Clear of This Meme Rally.