Short interest in Summit Materials Inc (NYSE:SUM) increased during the last reporting period, rising from 3.45M to 5.16M. This put 4.78% of the company's publicly available shares short.

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

Based on the recent average volume of 3.19M shares traded per day, it would take 1.62 day(s) for holders of this short interest to close out their positions without sending the stock sharply higher.