We obtain our shares outstanding data from MSN Money
and our price data (split and dividend adjusted) from Yahoo! Finance.
We use split and dividend adjusted prices because they ignore the uninteresting distortions caused by those events, giving us a more
informative picture of the history of a stock.
We define market capitalization on a certain date to be opening price per share on that date multiplied by the most recent shares outstanding figure reported prior to that date.
Our database contains price data from the first trading day of each month, and as such, the lines of our graphs have resolution up to the month. When analyzing market cap, long-term trends are much more interesting than short-term fluctuations.
When comparing sets of data using percentages, we define the 100% base values to be the values associated with the first date on which we have all three sets of data (shares outstanding, market cap, and price).
We define market capitalization on a certain date to be opening price per share on that date multiplied by the most recent shares outstanding figure reported prior to that date.
Our database contains price data from the first trading day of each month, and as such, the lines of our graphs have resolution up to the month. When analyzing market cap, long-term trends are much more interesting than short-term fluctuations.
When comparing sets of data using percentages, we define the 100% base values to be the values associated with the first date on which we have all three sets of data (shares outstanding, market cap, and price).