Fastly (FSLY) Short Interest Ratio & Short Volume

Short interest is the volume of Fastly shares that have been sold short but have not yet been closed out or covered. As of March 31st, investors have sold 10,400,000 shares of FSLY short. 7.94% of Fastly's shares are currently sold short. Learn More on Fastly'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. FSLY shares currently have a short interest ratio of 3.0. Learn More on Fastly's short interest ratio.

As of the most recent reporting period, the following institutional investors, funds, and major shareholders have reported short positions of Fastly: IMC Chicago LLC, GTS Securities LLC, Wolverine Trading LLC, Squarepoint Ops LLC, Millennium Management LLC, Group One Trading LLC, D. E. Shaw & Co. Inc., Citadel Advisors LLC, Balyasny Asset Management L.P., Jane Street Group LLC, Parallax Volatility Advisers L.P., Susquehanna International Group LLP, Concourse Financial Group Securities Inc., Walleye Trading LLC, Walleye Capital LLC, Barclays PLC, Capital Fund Management S.A., JPMorgan Chase & Co., and IMC Chicago 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. 7.94% of Fastly's floating shares are currently sold short.

Fastly saw a drop in short interest during the month of March. As of March 31st, there was short interest totaling 10,400,000 shares, a drop of 1.2% from the previous total of 10,530,000 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.

7.94% of Fastly's shares are currently sold short. Here is how the short interest of companies in the industry of "computer software" compare to Fastly: Zeta Global Holdings Corp. (11.71%), AvePoint, Inc. (6.08%), BlackLine, Inc. (9.21%), IAC Inc. (4.94%), ZoomInfo Technologies Inc. (4.78%), DigitalOcean Holdings, Inc. (11.44%), nCino, Inc. (12.93%), Alarm.com Holdings, Inc. (4.88%), Alkami Technology, Inc. (6.76%), Weibo Co. (12.54%),

As of the most recent reporting period, the following stocks had the largest short interest positions: Invesco QQQ ($21.93 billion), iShares 20+ Year Treasury Bond ETF ($9.31 billion), Strategy Incorporated ($8.42 billion), Charter Communications, Inc. ($4.52 billion), Apollo Global Management, Inc. ($4.26 billion), Super Micro Computer, Inc. ($3.98 billion), Capital One Financial Co. ($3.79 billion), TC Energy Co. ($3.43 billion), AppLovin Co. ($2.91 billion), and Schlumberger Limited ($2.89 billion). View all of the most shorted stocks.

Short selling FSLY is an investing strategy that aims to generate trading profit from Fastly as its price is falling. FSLY shares are trading down $0.09 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 Fastly 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 FSLY, 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 FSLY, twice per month. The most recent reporting period available is March, 31 2025.