Short interest in American Century Mid Cap Growth Insights ETF (BATS:ACMG) increased during the last reporting period, rising from 345.00 to 2.21K. This put -% of the company's publicly available shares short.

Based on the recent average volume of 1.34K shares traded per day, it would take 1.65 day(s) for holders of this short interest to close out their positions without sending the stock sharply higher.