Tilson says he "significantly" increased his Lumber Liquidators short position

• Whitney Tilson says he has significantly increased his short position in Lumber Liquidators (LL -1.5%) since the damaging 60 Minutes report.
• Tilson wrote in an email that he flagged the story for the 60 Minutes probe but did not sell or increase his position while the show conducted its own investigation.
• The hedge fund manager says the short position now makes 3.8% of his portfolio, and that the only real threat is the potential for a short-term short squeeze.
• Shares have hit another 52-week low today and have shed 36% this week.