Published October 1, 2015 2:04pm EDT | Updated October 1, 2015 5:20pm EDT

Twitter Shares Fall 7.5%, Short Interest At 17-month High

Shares of Twitter Inc. were down 7.5% in midday trade Thursday. Some investors appear to have been well prepared for the decline, as short interest, or bearish bets on the stock, has increased 77% in less than three months and is now at 17-month high. The company is expected to report interim chief executive Jack Dorsey, also the CEO of Square, as its CEO as early as today.