DWX tracks an index of 100 high-yielding international common stocks. It seeks dividends outside the US, weighting securities by dividend yield, not by market cap, an entirely reasonable approach for a fund with this goal. It attempts to skirt volatility by screening for stability, looking at factors like trading volume, earnings growth, and dividend growth. Aside from the 3% single security weight constraint, DWX also caps sector and geographic exposure at 25% (15% for emerging markets). Although its capping does help to diversify the portfolio, keep in mind that some industries are not known for their record of paying dividends. Still, the fund offers a wide array of securities from around the globe, and is a viable choice if it matches your investment objective. The index is rebalanced annually.