First Trust Indxx Aerospace & Defense ETF (MISL) Short Interest Ratio & Short Volume

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. MISL shares currently have a short interest ratio of 0.1. Learn More on First Trust Indxx Aerospace & Defense ETF's short interest ratio.

Companies that have a short interest as a percentage of float below 10% indicates positive investor sentiment and few short sellers. Stocks with a short interest percentage above 10% is considered high, suggesting some investors are pessimistic about the stock. Companies with a short interest percentage of 20% or more indicates widespread negative sentiment. 0.08% of First Trust Indxx Aerospace & Defense ETF's floating shares are currently sold short.

First Trust Indxx Aerospace & Defense ETF saw a increase in short interest during the month of April. As of April 30th, there was short interest totaling 28,283 shares, an increase of 5.1% from the previous total of 26,915 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.

0.08% of First Trust Indxx Aerospace & Defense ETF's shares are currently sold short. Here is how the short interest of companies compare to First Trust Indxx Aerospace & Defense ETF: U.S. Global Jets ETF (43.16%), First Trust Industrials/Producer Durables AlphaDEX Fund (0.05%), Invesco S&P 500 Equal Weight Industrials ETF (7.99%), Invesco S&P Global Water Index ETF (0.08%), First Trust Nasdaq Transportation ETF (0.17%), Invesco Dorsey Wright Industrials Momentum ETF (0.38%), Invesco Building & Construction ETF (0.39%), Direxion Daily Aerospace & Defense Bull 3X Shares (5.32%), Invesco Global Water ETF (0.01%), iShares Global Industrials ETF (0.14%),

As of the most recent reporting period, the following stocks had the largest short interest positions: SPDR S&P 500 ETF Trust ($86.09 billion), Invesco QQQ ($39.89 billion), iShares Russell 2000 ETF ($26.13 billion), Western Digital Corporation ($12.66 billion), Salesforce Inc. ($12.29 billion), Sandisk Corporation ($11.87 billion), SPDR S&P Biotech ETF ($9.82 billion), Lumentum Holdings Inc. ($8.51 billion), iShares 20+ Year Treasury Bond ETF ($7.76 billion), and Bloom Energy Corporation ($7.40 billion). View all of the most shorted stocks.

Short selling MISL is an investing strategy that aims to generate trading profit from First Trust Indxx Aerospace & Defense ETF as its price is falling. 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 First Trust Indxx Aerospace & Defense ETF 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 MISL, 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 MISL, twice per month. The most recent reporting period available is April, 30 2026.