UltraShort S&P500 ProShares (NYSE: SDS) is recently trading at $65.10 in pre-open trading, below its close of $72.50. SDS seeks daily investment results that correspond to twice the inverse daily performance of the S&P 500. SDS October option implied volatility of 66 is above its 26-week average of 46 according to Track Data, suggesting larger price movement.

UltraShort FTSE/Xinhua China 25 Proshares (NYSE: FXP) is recently trading at $88.52 in pre-open trading, below its close of $108.55. FXP October option implied volatility of 133 is above its 26-week average of 79 according to Track Data, suggesting larger price movement.

UltraShort Financials ProShares (NYSE: SKF) is recently trading at $87.96 in pre-open trading, below its close of $115.44. SKF is an exchange-traded fund seeking daily investment results that correspond to twice (200%) the inverse (opposite) of the daily performance of the Dow Jones U.S. Financials Index. SKF October option implied volatility of 161 is above its 26-week average of 75 according to Track Data, suggesting larger price movement.

Option Update is provided by Stock Specialist Paul Foster of theflyonthewall.com.