Short interest in Proto Labs Inc (NYSE:PRLB) increased during the last reporting period, rising from 973.38K to 1.01M. This put 5.76% of the company's publicly available shares short.

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

Based on the recent average volume of 162.11K shares traded per day, it would take 6.26 day(s) for holders of this short interest to close out their positions without sending the stock sharply higher.