BSE Sensex (and the Nifty) only keeps the winners. Companies have to constantly create wealth and increase their market cap or they will be left behind.
If we go down the memory lane, we had companies like Bombay Burmah, Mukand etc in the Sensex - and they have now been reduced to 'small caps'. Just three years ago, we had companies like Tata Power, HPCL, MTNL, Nestle, Castrol etc in the index. While these companies are still fairly large, they have been overtaken by nimbler companies like Bharti, RCom, Maruti etc.
You can check the complete history of Sensex replacements
here
Now take a look at the
current index constituents. Which are the companies in this list which would probably drop off in the next 3 years? These should be the companies which would grow at a slower rate than the other companies. My picks -
BAJAJ and HERO HONDA: These are 15% CAGR companies. And people in India would probably go purchase cars rather than bikes.
GUJ AMBUJA & ACC: Single commodity players generally don't last for long because of demand/supply issues.
DR. REDDY, RANBAXY & CIPLA: Indian pharma companies are not innovators. They are just a bunch of reverse-engineers.
REL ENERGY: Another 15 - 20% CAGR company.
SATYAM: A little more squeeze from the rupee and Satyam will drop down to a 15% CAGR company. Also a good takeover candidate (by IBM, EDS etc).
We will get to the replacement companies later.