My latest column at Yahoo is about the Underreported Sensex P/E Ratio . In there, I speak of how the earnings structure has changed dramatically if you look at the Standalone Earnings (which BSE uses to report) versus the Consolidated earnings (which they ignore). You might be interested in the way the Consolidated and Standalone Earnings are:
And then, how these earnings play a role in the Sensex EPS (according to the weights):
And if you wanted to look an unweighted contribution (that is, if you disregard weights:
Different kinds of calculations for the Sensex EPS:
Now what we need is EPS Growth and how it has happened for each stock, which stock has contributed how much to the Sensex EPS growth, both standalone and consolidated. But for that there is too much data gathering required; something that will need much more effort on my part. Something for another day.