The general guidelines for selection of constituents in SENSEX are as follows:

• Listed History:The scrip should have a listing history of at least 3 months at BSE. Exception may be considered if full market capitalisation of a newly listed company ranks among top 10 in the list of BSE universe. In case, a company is listed on account of merger/ demerger/ amalgamation, minimum listing history would not be required.
  
   

• Trading Frequency:The scrip should have been traded on each and every trading day in the last three months. Exceptions can be made for extreme reasons like scrip suspension etc.
  
   

• Final Rank:The scrip should figure in the top 100 companies listed by final rank. The final rank is arrived at by assigning 75% weightage to the rank on the basis of three-month average full market capitalisation and 25% weightage to the liquidity rank based on three-month average daily turnover & three-month average impact cost.
  
   

• Market Capitalization Weightage:The weightage of each scrip in SENSEX based on three-month average free-float market capitalisation should be at least 0.5% of the Index.
  
   

• Industry Representation:Scrip selection would generally take into account a balanced representation of the listed companies in the universe of BSE.
  
   

• Track Record:In the opinion of the Committee, the company should have an acceptable track record.

All About Sensex, Launch of BSE Sensex

What is Sensex in the stock market?

What are the objectives of SENSEX?

How to calculate BSE SENSEX?

What is the beta of SENSEX scrips?

SENSEX - Scrip selection criteria

Maintenance of SENSEX

How is the closing Index calculated?

What are the criteria for selection and review of scrips for the SENSEX?

Who selects these 30 stocks & How do they select these 30 stocks?

Dollex series of BSE indices

Book Building - About Book Building

Definition of Free-float & Determining Free-float factors of companies

Understanding Free-float Methodology & Its Major advantages

Book Building - Glossary