Spark Therapeutics (ONCE) Short Interest Ratio & Short Volume

Short interest is the volume of Spark Therapeutics shares that have been sold short but have not yet been closed out or covered. As of November 29th, investors have sold 3,470,000 shares of ONCE short. 9.97% of Spark Therapeutics' shares are currently sold short. Learn More on Spark 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. ONCE shares currently have a short interest ratio of 6.0. Learn More on Spark Therapeutics'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. 9.97% of Spark Therapeutics' floating shares are currently sold short.

Spark Therapeutics saw a decline in short interest during the month of November. As of November 29th, there was short interest totaling 3,470,000 shares, a decline of 2.0% from the previous total of 3,540,000 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.

Spark Therapeutics currently has issued a total of 38,523,000 shares. Some of Spark Therapeutics' 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. Spark Therapeutics currently has a public float of 34,800,000 shares.

9.97% of Spark Therapeutics' shares are currently sold short. Here is how the short interest of companies in the sector of "medical" compare to Spark Therapeutics: Cyclo Therapeutics, Inc. (3.55%), Cognition Therapeutics, Inc. (1.82%), Elevation Oncology, Inc. (16.57%), Passage Bio, Inc. (3.47%), BioAtla, Inc. (9.49%), IN8bio, Inc. (0.74%), SAB Biotherapeutics, Inc. (0.95%), Curis, Inc. (2.31%), Athira Pharma, Inc. (2.45%), BioCardia, Inc. (1.08%),

As of the most recent reporting period, the following stocks had the largest short interest positions: Slack Technologies, Inc. ($887.06 million), CrowdStrike Holdings, Inc. ($441.98 million), Spark Therapeutics Inc ($386.00 million), Carrizo Oil & Gas, Inc. ($169.28 million), Rocket Pharmaceuticals, Inc. ($153.59 million), CEL-SCI Co. ($51.42 million), Presidio Inc ($39.72 million), Vitamin Shoppe Inc ($22.16 million), Anavex Life Sciences Corp. ($14.63 million), and Affimed ($11.43 million). View all of the most shorted stocks.

Short selling ONCE is an investing strategy that aims to generate trading profit from Spark Therapeutics 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 Spark Therapeutics 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 ONCE, 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 ONCE, twice per month. The most recent reporting period available is November, 29 2019.