win

Is Jim Cramer Right? Is Apple Really a Market Barometer?

I think Cramer may have been speaking of Apple's predictive value. Simultaneous price correlation and the other tools you use would be useless to assess this metric. Instead, I would use a delay of one day and assess AAPL's price correlation with the SP, then 2 days and so on up to 5 days. Then I would do the same on a weekly chart. That is one way of measuring predictive value.