Pioneer Municipal High Income Opportunities Fund (MIO) Short Interest Ratio & Short Volume

Short interest is the volume of Pioneer Municipal High Income Opportunities Fund shares that have been sold short but have not yet been closed out or covered. As of May 31st, traders have sold 6,900 shares of MIO short. Learn More on Pioneer Municipal High Income Opportunities Fund's current short interest.

Pioneer Municipal High Income Opportunities Fund saw a decrease in short interest during the month of May. As of May 31st, there was short interest totaling 6,900 shares, a decrease of 25.8% from the previous total of 9,300 shares. Changes in short volume can be used to identify positive and negative investor sentiment. Investors that short sell a stock are betting that its price will decline in the future. An increase in short sale volume suggests bearish (negative) sentiment among investors. A decrease on short sale volume suggests bullish (positive) sentiment.

As of the most recent reporting period, the following stocks had the largest short interest positions: SPDR S&P 500 ETF Trust ($64.96 billion), Invesco QQQ ($27.88 billion), iShares Russell 2000 ETF ($19.94 billion), iShares 20+ Year Treasury Bond ETF ($9.69 billion), MicroStrategy Incorporated ($8.58 billion), SPDR S&P Biotech ETF ($5.72 billion), Invesco S&P 500 Equal Weight ETF ($5.45 billion), iShares iBoxx $ Investment Grade Corporate Bond ETF ($4.70 billion), Charter Communications, Inc. ($4.54 billion), and Industrial Select Sector SPDR Fund ($4.49 billion). View all of the most shorted stocks.

Short selling MIO is an investing strategy that aims to generate trading profit from Pioneer Municipal High Income Opportunities Fund as its price is falling. MIO shares are trading up $0.01 today. To short a stock, an investor borrows shares, sells them and buys the shares back on the public market later to return it to the lender. Short sellers are betting that a stock will decline in price. If the stock does drop after selling, the short seller buys it back at a lower price and returns it to the lender. The difference between the sell price and the buy price is the trader's profit.

A short squeeze for Pioneer Municipal High Income Opportunities Fund occurs when it has a large amount of short interest and its stock increases in price. This forces short sellers to cover their short interest positions by buying actual shares of MIO, which in turn drives the price of the stock up even further.

Short interest is typically published by a stock exchange once per month. However, NASDAQ publishes a report for U.S. stocks, including MIO, twice per month. The most recent reporting period available is May, 31 2025.