ETFs are exploding in number and variety. Bullish on China, but only on the small companies? Think stocks in Kazakhstan are about to soar? Or the Polish currency, the zloty? There are ETFs for that.
Or you can skip it all and bet on the only thing that's near-certain: That Wall Street will continue to sell the promise of high returns divorced from the U.S. stock market, and people will continue to pay for the effort.
Since its October low, the PowerShares Dynamic Financial Sector ETF, which holds stocks of U.S. banks and investment firms, is up 25 percent.
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