Indexes might be relatively efficient but underneath it all is something different. Individual stocks can fluctuate quite a bit in a matter of a year. That was the basis for Graham’s argument in the last post for using certain criteria to profit from those moves. Mr. Market can quote ridiculous prices for individual companies and it happens more often than you might expect.
Well, curiosity got the best me. I did some digging to see just how much stock prices fluctuate in a given year.
I settled on the S&P 500 stocks (via Wikipedia since the ticker symbols were readily available), dropped it into a spreadsheet, and pulled the data from Google Finance. For the record, there are currently 505 stocks, from 500 companies, in the S&P 500. Continue Reading…