US Dollar Index ETFs
PowerShares DB U.S. Dollar Index Bullish Fund (UUP)
PowerShares DB U.S. Dollar Index Bearish Fund (UDN)
British Pound ETF
CurrencyShares British Pound Sterling Trust (FXB)
Japanese Yen ETFs
CurrencyShares Japanese Yen (FXY)
ProShares UltraShort Yen (YCS)
G10 Currency Basket ETF
PowerShares DB G10 Currency Harvest Fund (DBV)