Opendoor stock tumbled 25% in extended trade after forecasting Q3 revenue of $800-$875 million, down 36% YoY. Despite Q2 revenue rising 4% to $1.57 billion, losses persist amid weak housing demand and high mortgage rates. Retail traders behind the recent 'meme stock' surge exited fast. OPEN may buy just 1,200 homes in Q3, down from 3,504 last year.