=CustomBetaFiveYears("MSFT")
- Calculates beta against SPY on a daily basis.
=CustomBetaFiveYears("MSFT","AAPL")
- Calculates beta against AAPL on a daily basis.
=CustomBetaFiveYears("MSFT","AAPL", "monthly")
- Calculates beta against AAPL on a monthly basis.