Looking at the Percent Change of Stock Indexes is Relevant . . .
nThis measures the rate of return on the investment
ni.e., how many more dollars you would have at the end of the day if you invested $100 at the beginning of the day
nThe sixty largest percent changes in the S&P 500 (or in the DJIA) have been before the last 10 years
nThe only exceptions among these sixty days are in 1997 and 1998