Europe is weaker, with the euro at nine-year lows against the dollar; particular weakness in the Greek stock market, down almost 5 percent, with Greek debt yields also rising, on reports over the weekend that Germany might permit a Greek exit from the euro. Peripheral countries like Spain and Italy are also down 1 to 2 percent.

Lots of interest in investing in Europe, not so much in the euro. That's why the WisdomTree Europe Hedged Equity ETF (HEDJ) is getting a lot of attention: it invests in European equities but hedges out the effect of the euro.