The CurrencyShares Euro Trust (FXE), an exchange-traded fund that tracks the USD/euro currency pair (X100), is up $1.35 to $140.42 and rebounding from 4-day, 2.9 percent, slide. In the options market, some traders seem to be using the strength to enter bearish trades. 5,635 puts and 1,300 calls traded. Buyers of July puts at the 136, 138, and 139 lines are leading the flow. Implied volatility is steady at 15.