ProShares UltraShort S&P500 (SDS) Short Interest Ratio & Short Volume

Short interest is the volume of ProShares UltraShort S&P500 shares that have been sold short but have not yet been closed out or covered. As of August 31st, traders have sold 1,500,000 shares of SDS short. 5.17% of ProShares UltraShort S&P500's shares are currently sold short. Learn More on ProShares UltraShort S&P500's current short interest.

As of the most recent reporting period, the following institutional investors, funds, and major shareholders have reported short positions of ProShares UltraShort S&P500: Squarepoint Ops LLC, Jane Street Group LLC, and Squarepoint Ops 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. 5.17% of ProShares UltraShort S&P500's floating shares are currently sold short.

ProShares UltraShort S&P500 saw a increase in short interest during the month of August. As of August 31st, there was short interest totaling 1,500,000 shares, an increase of 23.0% from the previous total of 1,220,000 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.

5.17% of ProShares UltraShort S&P500's shares are currently sold short. Here is how the short interest of companies compare to ProShares UltraShort S&P500: Invesco S&P 500 Equal Weight Income Advantage ETF (0.53%), VistaShares Target 15 Berkshire Select Income ETF (0.05%), Invesco S&P 500 High Beta ETF (18.18%), AllianzIM U.S. Large Cap Buffer20 Oct ETF (0.01%), ProShares Ultra Dow30 (1.76%), BNY Mellon Dynamic Value ETF (0.11%), Direxion Daily S&P 500 Bear 3X Shares (10.61%), SPDR Global Dow ETF (0.29%), ClearBridge Large Cap Growth ESG ETF (0.02%), ETC 6 Meridian Mega Cap Equity ETF (0.25%),

As of the most recent reporting period, the following stocks had the largest short interest positions: SPDR S&P 500 ETF Trust ($73.23 billion), Invesco QQQ ($29.52 billion), iShares Russell 2000 ETF ($20.82 billion), iShares 20+ Year Treasury Bond ETF ($10.76 billion), Palo Alto Networks, Inc. ($9.37 billion), Strategy Inc ($7.58 billion), Invesco S&P 500 Equal Weight ETF ($6.78 billion), SPDR S&P Biotech ETF ($6.72 billion), AppLovin Corporation ($6.37 billion), and iShares iBoxx $ Investment Grade Corporate Bond ETF ($6.29 billion). View all of the most shorted stocks.

Short selling SDS is an investing strategy that aims to generate trading profit from ProShares UltraShort S&P500 as its price is falling. SDS shares are trading down $0.12 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 ProShares UltraShort S&P500 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 SDS, 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 SDS, twice per month. The most recent reporting period available is August, 31 2025.