ProShares UltraShort MidCap 400 (MZZ) Short Interest Ratio & Short Volume

Short interest is the volume of ProShares UltraShort MidCap 400 shares that have been sold short but have not yet been covered or closed out. As of May 15th, investors have sold 9,000 shares of MZZ short. Learn More on ProShares UltraShort MidCap 400's current short interest.

The short interest ratio, also known as the "days to cover ratio", is calculated by dividing the number of shares of a stock sold short divided by its average trading volume. A short interest ratio ranging between 1 and 4 generally indicates strong positive sentiment about a stock and a lack of short sellers. A short interest ratio of 10 or greater indicates strong pessimism about a stock. MZZ shares currently have a short interest ratio of 2.0. Learn More on ProShares UltraShort MidCap 400's short interest ratio.

ProShares UltraShort MidCap 400 saw a increase in short interest during the month of May. As of May 15th, there was short interest totaling 9,000 shares, an increase of 23.3% from the previous total of 7,300 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.

Here is how the short interest of companies compare to ProShares UltraShort MidCap 400: WisdomTree U.S. MidCap Quality Growth Fund (0.20%), ProShares UltraPro Short MidCap 400 (2.87%), Alger Weatherbie Enduring Growth ETF (0.09%), Xtrackers S&P MidCap 400 Scored & Screened ETF (0.22%), ProShares Short MidCap 400 (1.23%), Strive Mid-Cap ETF (0.06%), SoFi Next 500 ETF (0.08%), Pacer Lunt MidCap Multi-Factor Alternator ETF (0.09%), Direxion Daily Mid Cap Bull 3X Shares (0.71%), Alger Mid Cap 40 ETF (0.07%),

As of the most recent reporting period, the following stocks had the largest short interest positions: Invesco QQQ ($29.20 billion), Strategy Incorporated ($10.88 billion), iShares 20+ Year Treasury Bond ETF ($10.04 billion), Capital One Financial Co. ($5.51 billion), Charter Communications, Inc. ($5.00 billion), Super Micro Computer, Inc. ($4.43 billion), Apollo Global Management, Inc. ($4.02 billion), Hims & Hers Health, Inc. ($3.65 billion), VanEck Semiconductor ETF ($3.27 billion), and Coinbase Global, Inc. ($3.10 billion). View all of the most shorted stocks.

Short selling MZZ is an investing strategy that aims to generate trading profit from ProShares UltraShort MidCap 400 as its price is falling. MZZ shares are trading down $0.20 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 ProShares UltraShort MidCap 400 occurs when it has a large amount of short interest and its stock appreciates in price. This forces short sellers to cover their short interest positions by buying actual shares of MZZ, 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 MZZ, twice per month. The most recent reporting period available is May, 15 2025.