Question: What are your thoughts on the argument that identifying a portfolio with a higher Sharpe ratio than the S&P 5 0 0 Index portfolio would

What are your thoughts on the argument that identifying a portfolio with a higher Sharpe ratio than the S&P 500 Index portfolio would warrant the rejection of the single-index Capital Asset Pricing Model (CAPM)? How might this assertion reflect on the validity and practical implications of the CAPM framework in portfolio management and asset pricing theory?

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