Can You Guess This Chart?

Here are 3 hints: 

• This stock has been the subject of Andrew Left and Whitney Tilson short positions
• Sympathy plays include Restoration Hardware Holdings Inc RH, Williams-Sonoma, Inc. WSM and Bed Bath & Beyond Inc. BBBY
• The stock hit an all-time high of $49.53 exactly one year ago

Answer: Wayfair Inc W