PTC Therapeutics (PTCT) Short Interest Ratio & Short Volume

Short interest is the volume of PTC Therapeutics shares that have been sold short but have not yet been covered or closed out. As of January 31st, investors have sold 4,160,000 shares of PTCT short. Learn More on PTC Therapeutics' 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. PTCT shares currently have a short interest ratio of 6.0. Learn More on PTC Therapeutics's short interest ratio.

As of the most recent reporting period, the following institutional investors, funds, and major shareholders have reported short positions of PTC Therapeutics: Squarepoint Ops LLC, Group One Trading LLC, Caption Management LLC, Citadel Advisors LLC, Jane Street Group LLC, Concourse Financial Group Securities Inc., JPMorgan Chase & Co., and Wolverine Asset Management LLC. These positions are disclosed in Form 13F filings with the Securities and Exchange Commission.

PTC Therapeutics saw a decrease in short interest in the month of January. As of January 31st, there was short interest totaling 4,160,000 shares, a decrease of 1.9% from the previous total of 4,240,000 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 in the industry of "pharmaceutical products" compare to PTC Therapeutics: Summit Therapeutics Inc. (2.83%), Genmab A/S (0.26%), Intra-Cellular Therapies, Inc. (1.50%), Viatris Inc. (2.60%), Moderna, Inc. (11.84%), Dr. Reddy's Laboratories Limited (1.90%), Vaxcyte, Inc. (10.86%), Sarepta Therapeutics, Inc. (5.29%), Qiagen (1.18%), Ascendis Pharma A/S (5.42%),

As of the most recent reporting period, the following stocks had the largest short interest positions: AppLovin Co. ($5.21 billion), Charter Communications, Inc. ($4.07 billion), Reddit, Inc. ($3.33 billion), The Kroger Co. ($2.67 billion), Cencora, Inc. ($2.29 billion), Hims & Hers Health, Inc. ($2.17 billion), SoFi Technologies, Inc. ($1.99 billion), Live Nation Entertainment, Inc. ($1.87 billion), Rivian Automotive, Inc. ($1.76 billion), and Moderna, Inc. ($1.60 billion). View all of the most shorted stocks.

Short selling PTCT is an investing strategy that aims to generate trading profit from PTC Therapeutics as its price is falling. PTCT shares are trading up $0.31 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 PTC Therapeutics 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 PTCT, 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 PTCT, twice per month. The most recent reporting period available is January, 31 2025.