Harbor Osmosis International Resource Efficient ETF (EFFI) 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. EFFI shares currently have a short interest ratio of 8.8. Learn More on Harbor Osmosis International Resource Efficient 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. 0.15% of Harbor Osmosis International Resource Efficient ETF's floating shares are currently sold short.

Harbor Osmosis International Resource Efficient ETF saw a increase in short interest in April. As of April 30th, there was short interest totaling 8,930 shares, an increase of 1,700.4% from the previous total of 496 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.

0.15% of Harbor Osmosis International Resource Efficient ETF's shares are currently sold short. Here is how the short interest of companies compare to Harbor Osmosis International Resource Efficient ETF: Harbor Osmosis Emerging Markets Resource Efficient ETF (0.02%), Astoria US Quality Growth Kings ETF (0.22%), International Developed Equity Active ETF (0.47%), MarketDesk Focused U.S. Momentum ETF (0.93%), AB International Buffer ETF (0.19%), Hedgeye Quality Growth ETF (1.71%), Tremblant Global ETF (0.05%), Invesco Bloomberg Analyst Rating Improvers ETF (0.02%), Invesco Bloomberg Pricing Power ETF (0.03%), Pacer Nasdaq International Patent Leaders ETF (0.93%),

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 EFFI is an investing strategy that aims to generate trading profit from Harbor Osmosis International Resource Efficient 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 Harbor Osmosis International Resource Efficient ETF 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 EFFI, 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 EFFI, twice per month. The most recent reporting period available is April, 30 2026.