2011 Mock Question 19 average, neither, difference, 2011

brain_wash_your

How come in the answer they use the ending market period to calculate return?

To me, the correct method is to do a weighted average of the stock price changes using the Market Cap at 1/1/09 as weight.

The problem says no stock splits or dividends, so the only reason for a difference between the price change and the market cap change is an acquisition or a spinoff, neither of which would cause a value weighted index to apprecaite.

I got equally weighted as very narrowly beating out price weighted.

thanks for any help in advance.