Vanguard S&P Small-Cap 600 ETF (VIOO) Short Interest Ratio & Short Volume $102.74 +0.02 (+0.02%) Closing price 08/6/2025 04:10 PM EasternExtended Trading$102.76 +0.02 (+0.01%) As of 04:00 AM Eastern Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Polygon.io. Learn more. Add Compare Share Share Short Interest Stock AnalysisChartDividendHeadlinesHoldingsOwnershipRatingsShort InterestBuy This Stock Vanguard S&P Small-Cap 600 ETF Short Interest DataVanguard S&P Small-Cap 600 ETF (VIOO) has a short interest of 61,800 shares. This marks a 138.61% increase in short interest from the previous month. The short interest ratio (days to cover) is 0.5, indicating that it would take 0.5 days of the average trading volume of 160,894 shares to cover all short positions.Current Short Interest61,800 sharesPrevious Short Interest25,900 sharesChange Vs. Previous Month+138.61%Dollar Volume Sold Short$6.35 millionShort Interest Ratio0.5 Days to CoverLast Record DateJuly 15, 2025Outstanding Shares27,735,000 sharesPercentage of Shares Shorted0.22%Today's Trading Volume45,547 sharesAverage Trading Volume160,894 sharesToday's Volume Vs. Average28% Short Selling Vanguard S&P Small-Cap 600 ETF? Sign up to receive the latest short interest report for Vanguard S&P Small-Cap 600 ETF and its competitors with MarketBeat's FREE newsletter. Email Address Skip Charts & View Short Interest HistoryShort Interest ChartDays to Cover ChartShort Percent of Float ChartVIOO Short Interest Over TimeVIOO Days to Cover Over TimeVIOO Percentage of Float Shorted Over Time Vanguard S&P Small-Cap 600 ETF Short Interest History Export to ExcelReport DateTotal Shares Sold ShortDollar Volume Sold ShortChange from Previous ReportPercentage of Float ShortedDays to CoverPrice on Report Date 7/15/202561,800 shares $6.35 million +138.6%N/A0.5 $102.76 6/30/202525,900 shares $2.62 million +324.6%0.1%0.8 $101.23 6/15/20256,100 shares $598.78 thousand -91.5%0.0%0 $98.16 5/31/202571,400 shares $6.96 million -15.3%0.2%0.4 $97.42 5/15/202584,300 shares $8.38 million -51.6%N/A0.4 $99.44 4/30/2025174,100 shares $16.07 million +27.3%N/A0.8 $92.33 4/15/2025136,800 shares $12.16 million +93.2%N/A0.6 $88.92 3/14/202545,100 shares $4.36 million +44.1%N/A0.2 $96.74 2/14/202543,100 shares $4.65 million -61.9%N/A0.3 $107.81 1/31/2025113,100 shares $12.33 million +205.7%N/A0.7 $109.02 VIOO Short Interest - Frequently Asked Questions What is Vanguard S&P Small-Cap 600 ETF's current short interest? Short interest is the volume of Vanguard S&P Small-Cap 600 ETF shares that have been sold short but have not yet been closed out or covered. As of July 15th, investors have sold 61,800 shares of VIOO short. Learn More on Vanguard S&P Small-Cap 600 ETF's current short interest. Which institutional investors are shorting Vanguard S&P Small-Cap 600 ETF? As of the most recent reporting period, the following institutional investors, funds, and major shareholders have reported short positions of Vanguard S&P Small-Cap 600 ETF: Belvedere Trading LLC, and Belvedere Trading LLC. These positions are disclosed in Form 13F filings with the Securities and Exchange Commission. Is Vanguard S&P Small-Cap 600 ETF's short interest increasing or decreasing? Vanguard S&P Small-Cap 600 ETF saw a increase in short interest during the month of July. As of July 15th, there was short interest totaling 61,800 shares, an increase of 138.6% from the previous total of 25,900 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. How does Vanguard S&P Small-Cap 600 ETF's short interest compare to its competitors? Here is how the short interest of companies compare to Vanguard S&P Small-Cap 600 ETF: Schwab Fundamental International Small Equity ETF (0.04%), SPDR S&P 600 Small Cap Growth ETF (0.19%), Direxion Daily Small Cap Bull 3X Shares (9.60%), Fidelity Enhanced Small Cap ETF (0.45%), SPDR S&P 600 Small Cap Value ETF (0.16%), iShares U.S. Small Cap Equity Factor ETF (0.82%), WisdomTree U.S. SmallCap Dividend Fund (0.03%), Invesco S&P SmallCap Momentum ETF (0.14%), Avantis U.S. Small Cap Equity ETF (0.24%), WisdomTree Emerging Markets SmallCap Dividend Fund (0.21%), Which stocks are the most shorted right now? As of the most recent reporting period, the following stocks had the largest short interest positions: Coinbase Global, Inc. ($5.11 billion), Charter Communications, Inc. ($4.76 billion), Reddit Inc. ($2.84 billion), SoFi Technologies, Inc. ($2.79 billion), Seagate Technology Holdings PLC ($2.79 billion), Live Nation Entertainment, Inc. ($2.67 billion), Rocket Lab Corporation ($2.49 billion), AST SpaceMobile, Inc. ($2.12 billion), Moderna, Inc. ($2.09 billion), and Omnicom Group Inc. ($2.04 billion). View all of the most shorted stocks. What does it mean to sell short Vanguard S&P Small-Cap 600 ETF stock? Short selling VIOO is an investing strategy that aims to generate trading profit from Vanguard S&P Small-Cap 600 ETF as its price is falling. VIOO shares are trading up $0.02 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. How does a short squeeze work against Vanguard S&P Small-Cap 600 ETF? A short squeeze for Vanguard S&P Small-Cap 600 ETF 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 VIOO, which in turn drives the price of the stock up even further. How often is Vanguard S&P Small-Cap 600 ETF's short interest reported? Short interest is typically published by a stock exchange once per month. However, NASDAQ publishes a report for U.S. stocks, including VIOO, twice per month. The most recent reporting period available is July, 15 2025. 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