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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. |
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