Check out the companies making headlines after the bell Monday:
Shares of Wayfair slipped after short seller again Whitney Tilson again knocked the online home furnishing retailer, calling it his biggest short position and predicted the stock will trade below $10 within a year. Wilson is the second short seller after Andrew Left's Citron Research to predict it will fall below $10. The call on the stock overshadowed the company's better-than-expected third-quarter revenue.
Pandora inched up after it announced an agreement to acquire several key assets from music streaming company, Rdio. The music discovery platform said the deal will "accelerate the company's plan to offer fans greater control over the music they love, strengthening Pandora's position as the definitive source of music."
Shares of Urban Outfitters fell after the company reported disappointing quarterly results. The apparel retailer said comparable sales rose far less than expected in the third quarter thanks to weaker demand for its Anthropologie brand.