Short interest in Invesco National AMT-Free Municipal Bond ETFo (ARCA:PZA) increased during the last reporting period, rising from 751.28K to 998.43K. This put -% of the company's publicly available shares short.

Short interest for Invesco National AMT-Free Municipal Bond ETFo gives investors a sense of the degree to which investors are betting on the decline of Invesco National AMT-Free Municipal Bond ETFo's stock. Short interest data is updated every two weeks.

Based on the recent average volume of 1.55M shares traded per day, it would take 1 day(s) for holders of this short interest to close out their positions without sending the stock sharply higher.