How are they calculated?
Indices can differ based on their method of calculation – which is based on certain specific theory of what elements will give a near perfect indicator of industry average etc.
Indices may be price-weighted (prices of the stock are considered for calculating the index), or, capitalization-weighted index which looks at market value of the stocks.
Mostly used method is market capitalization method, where
Market capitalization = market price of shares x number of shares outstanding (issued by the company)
Another method used is free float market capitalization method, where Market capitalization = market price of shares x number of share which are available for trading in the open market
How Sensex is Calculated
Famous indices and trivia:
Some very popular stock indices followed worldwide:
1. Dow Jones Industrial Average, The Global Dow
2. Dow Jones Asia Titans 50
3. S & P – Global 1000/1200 – (S&P = Standard and Poor’s)
4. S & P Asia 50
5. BBC Global 30
6. EURO STOXX 50
7. FTSE indices
8. NASDAQ indices