Short interest in Pioneer Municipal High Income Opportunities Fund Inc. (NYSE:MIO) decreased during the last reporting period, falling from 23.34K to 21.31K. This put -% of the company's publicly available shares short.

Short interest in Pioneer Municipal High Corp (XNYS:MIO) decreased during the last reporting period, falling from 280.30M to 275.20M. This put 1.17% of the company's publicly available shares short.

Based on the recent average volume of 34.50K 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.