ProShares UltraShort S&P500 SDS ETF

The SDS is an ETF managed by ProShares, an investment fund manager. This ETF seeks a return of -200% of the return of the S&P500 index for a single day. (Note: compounding effects will make the multi-day return different.)

Compare this to ProShares Ultra S&P500 SSO.

ProShares official page on the SDS: http://www.proshares.com/funds/sds.html

Ticker: SDS Intraday Ticker: SDS.IV CUSIP: 74347R883 Inception Date: 7/11/06 Expense Ratio: 0.91% NAV Calculation Time: 4:00 p.m. ET