Amarin (AMRN) Short Interest Ratio & Short Volume

Short interest is the volume of Amarin shares that have been sold short but have not yet been closed out or covered. As of July 31st, investors have sold 476,700 shares of AMRN short. 2.31% of Amarin's shares are currently sold short. Learn More on Amarin'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. AMRN shares currently have a short interest ratio of 4.0. Learn More on Amarin's short interest ratio.

As of the most recent reporting period, the following institutional investors, funds, and major shareholders have reported short positions of Amarin: Group One Trading LLC, and Jane Street Group LLC. These positions are disclosed in Form 13F filings with the Securities and Exchange Commission.

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. 2.31% of Amarin's floating shares are currently sold short.

Amarin saw a increase in short interest in the month of July. As of July 31st, there was short interest totaling 476,700 shares, an increase of 15.2% from the previous total of 413,800 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.

Amarin currently has issued a total of 20,710,000 shares. Some of Amarin's outstanding shares are available for trading, while others are subject to various restrictions. The public float, also referred to as floating shares or "the float", are shares that publicly owned, unrestricted and available to trade on the open market. Amarin currently has a public float of 20,680,000 shares.

2.31% of Amarin's shares are currently sold short. Here is how the short interest of companies in the industry of "pharmaceutical products" compare to Amarin: Avadel Pharmaceuticals PLC. (11.84%), Evotec AG (0.19%), Phibro Animal Health Corporation (5.04%), Tilray Brands, Inc. (17.02%), CureVac N.V. (0.78%), Collegium Pharmaceutical, Inc. (13.98%), Xeris Biopharma Holdings, Inc. (12.06%), Enliven Therapeutics, Inc. (12.93%), Pharvaris N.V. (1.98%), Intellia Therapeutics, Inc. (28.56%),

As of the most recent reporting period, the following stocks had the largest short interest positions: SPDR S&P 500 ETF Trust ($70.87 billion), Invesco QQQ ($30.12 billion), iShares Russell 2000 ETF ($19.85 billion), iShares 20+ Year Treasury Bond ETF ($10.34 billion), Strategy Inc ($8.98 billion), iShares iBoxx $ Investment Grade Corporate Bond ETF ($7.61 billion), SPDR S&P Biotech ETF ($6.81 billion), Invesco S&P 500 Equal Weight ETF ($6.14 billion), Palo Alto Networks, Inc. ($5.97 billion), and Super Micro Computer, Inc. ($5.28 billion). View all of the most shorted stocks.

Short selling AMRN is an investing strategy that aims to generate trading profit from Amarin as its price is falling. AMRN shares are trading down $0.03 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 Amarin 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 AMRN, 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 AMRN, twice per month. The most recent reporting period available is July, 31 2025.