The Nasdaq Composite Index is poised for what could be the best performance in its 51-year history on a day that the U.S. consumer-price index was released. As of Thursday morning, the index was up 5.8% after October's softer-than-expected CPI report. If that level is sustained into the close, it would surpass the Nasdaq's performance on Oct. 16 and Dec. 16 of 2008, when the index jumped 5.5% and 5.4%, respectively, after CPI releases, according to Dow Jones Market Data. Meanwhile, the S&P 500 Index appeared to be on track for its best CPI-day performance since Dec. 16, 2008, when it jumped 5.1%. The S&P 500 was up 4.3% as of Thursday morning.
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