How much of the variability of your security's return is "explained" by the variability of returns in the "market"? (Note: In your case, the market is represented by the S&P 500 Index.) Do you think that a different market index might be a better representation of the market for your particular security? Why/Why not?

What is the correlation of returns for your security with the market for the selected time period? Might this relationship change over time, and if so, how and why?

Does the relationship between your security and the market appear to be statistically significantly different than zero? What evidence from the regression supports your conclusion?

Review the standardized residuals and comment about the importance of individual data points (if any) that may have influenced your estimation of beta.