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Periods of low volatility are usually followed by potentially profitable periods of high volatility.
Here's how to trade the PowerShares Water Resources ETF and its five largest components: American Water, Danaher, Ecolab, Pentair and Roper Technologies.
Here are Wednesday's top research calls, including upgrades for F5 Networks, U.S. Steel, Lockheed Martin and Sysco, and downgrades for GoPro, Kansas City Southern, Globus and Constellation Brands.