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Should Correlations Drive Your Investment Decisions?

Do stock market correlations matter? Statisticians use correlations (or cross-correlation) to measure the relationship between asset classes or investments. The general idea is to better understand the similarity or dissimilarity in how investments perform against each other and to build a portfolio of investments that can benefit. The CBOE S&P 500 Implied Correlation Index (ChicagoOptions:^KCJ) …

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