Short interest in Energy Recovery Inc (NASDAQ:ERII) increased during the last reporting period, rising from 1.52M to 1.72M. This put 3.04% of the company's publicly available shares short.

Short interest for Energy Recovery gives investors a sense of the degree to which investors are betting on the decline of Energy Recovery's stock. Short interest data is updated every two weeks.

Based on the recent average volume of 387.18K shares traded per day, it would take 4.44 day(s) for holders of this short interest to close out their positions without sending the stock sharply higher.