Testing this system over the period 1996-2007 produces returns that beatthe S&P500 index by more than a percentage point a year with similarvolatility.

这套系统测试1996-2007年期间，在相似的波动性之下，所产出的回报每年平均超过标准普尔指数1个多百分点。

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Using our performance measure we compared the old economy and new economy stocks as proxied by the S&P500 index and two technology stock indices respectively.

利用我们的测度和检验函数对以S&P500指数和两个技术股票指数代表的旧经济和新经济进行了比较。

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Tuesday saw profit-taking in the US markets, with the S&P500 and NASDAQ down nearly 1%, with the DJIA down 1.5%.

周二美元市场获利，标准普尔500和纳斯达克指数下跌近1%，而道琼斯工业指数则下跌1.5%。

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Tuesday saw profit-taking in the US markets, with the S&P500 and NASDAQ down nearly 1%, with the DJIA down 1.5%.

周二美元市场获利，标准普尔500和纳斯达克指数下跌近1%，而道琼斯工业指数则下跌1.5%。

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