Short interest in Altair Engineering Inc (NASDAQ:ALTR) increased during the last reporting period, rising from 4.38M to 4.67M. This put 11.63% of the company's publicly available shares short.

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

Based on the recent average volume of 424.31K shares traded per day, it would take 11 day(s) for holders of this short interest to close out their positions without sending the stock sharply higher.