Opendoor's Buyer Perks Are A 'Nothing Burger' — Business Model Still A Mystery, Says Hedge Funder

1. Hedge fund manager criticizes Opendoor's new offerings as ineffective. 2. Opendoor's CEO announced a seven-day test drive and a 100-day warranty. 3. Critics doubt Opendoor's business model and path to profitability. 4. Major skepticism remains despite a 640% stock rally since June low. 5. Recent opinions label Opendoor an 'obvious short' and unprofitable.