The forward price/earnings ratio of the top 25% of S&P 500 stocks by dividend yield is 17, vs. a 36-year average of 12, according to Ned Davis Research.

据戴维斯研究机构，按股息算，标普500指数中排名前25%的股票市盈率达17倍，而过去36年市场平均市盈率为12倍。

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On average, stock markets in the past in the past five Olympic host countries rose strongly in the 12 months after the games and all outperformed the MSCI World Index, according to Ned Davis Research.

根据尼德-戴维思研究机构的资料，平均下来，过去凡是举办过奥运的五个举办国的股票在奥运结束后的12个月里都是长势凶猛，而且全都超过了MSCI 指数。

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The Chinese stock market typically moves in tandem with industrial-production growth, says Tony Welch, a global analyst at Ned Davis Research.

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Small caps have now outperformed large caps for nearly 14 years the longest such period ever seen, according to Ned Davis Research.

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"There are so many other things going on with Facebook right now, " said Amy Lubas, technology strategist at Ned Davis Research Inc.

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