SENSEX

Not eligible

The general guidelines for selection of constituents in S&P BSE SENSEX are as follows:

• Equities of companies listed on Bombay Stock Exchange Ltd. (excluding companies classified in Z group, listed mutual funds, scrips suspended on the last day of the month prior to review date, scrips objected by the Surveillance department of the Exchange and those that are traded under permitted category) shall be considered eligible.
• Listing History: The scrip should have a listing history of at least three months at BSE. An exception may be granted to one month, if the average free-float market capitalization of a newly listed company ranks in the top 10 of all companies listed at BSE. In the event that a company is listed on account of a merger / demerger / amalgamation, a minimum listing history is not required.
• The scrip should have been traded on each and every trading day in the last three months at BSE. Exceptions can be made for extreme reasons like scrip suspension etc.
• Companies that have reported revenue in the latest four quarters from its core activity are considered eligible.
• From the list of constituents selected through Steps 1-4, the top 75 companies based on free-float market capitalisation (avg. 3 months) are selected as well as any additional companies that are in the top 75 based on full market capitalization (avg. 3 months).
• The filtered list of constituents selected through Step 5 (which can be greater than 75 companies) is then ranked on absolute turnover (avg. 3 months).
• Any company in the filtered, sorted list created in Step 6 that has Cumulative Turnover of >98%, are excluded, so long as the remaining list has more than 30 scrips.
• The filtered list calculated in Step 7 is then sorted by free float market capitalization. Any company having a weight within this filtered constituent list of <0.50% shall be excluded.
• All remaining companies will be sorted on sector and sub-sorted in the descending order of rank on free-float market capitalization.
• Industry/Sector Representation: Scrip selection will generally attempt to maintain index sectoral weights that are broadly in-line with the overall market.
• Track Record: In the opinion of the BSE Index Committee, all companies included within the S&P BSE SENSEX should have an acceptable track record.

Source : BSE

Free-float methodology refers to an index construction methodology that takes into consideration only the free-float market capitalization of a company for the purpose of index calculation and assigning weight to stocks in the index. Free-float market capitalization takes into consideration only those shares issued by the company that are readily available for trading in the market. It generally excludes promoters' holding, government holding, strategic holding and other locked-in shares that will not come to the market for trading in the normal course. In other words, the market capitalization of each company in a free-float index is reduced to the extent of its readily available shares in the market.

Subsequently all BSE indices with the exception of BSE-PSU index have adopted the free-float methodology.

Source : BSE

Shareholding of investors that would not, in the normal course come into the open market for trading are treated as 'Controlling/ Strategic Holdings' and hence not included in free-float. Specifically, the following categories of holding are generally excluded from the definition of Free-float:

• Shares held by founders/directors/ acquirers which has control element
• Shares held by persons/ bodies with 'Controlling Interest'
• Shares held by Government as promoter/acquirer
• Holdings through the FDI Route
• Strategic stakes by private corporate bodies/ individuals
• Equity held by associate/group companies (cross-holdings)
• Equity held by Employee Welfare Trusts
• Locked-in shares and shares which would not be sold in the open market in normal course.

Source : BSE

A Free-float index reflects the market trends more rationally as it takes into consideration only those shares that are available for trading in the market.

Free-float Methodology makes the index more broad-based by reducing the concentration of top few companies in Index.

A Free-float index aids both active and passive investing styles. It aids active managers by enabling them to benchmark their fund returns vis--vis an investible index. This enables an apple-to-apple comparison thereby facilitating better evaluation of performance of active managers. Being a perfectly replicable portfolio of stocks, a Free-float adjusted index is best suited for the passive managers as it enables them to track the index with the least tracking error.

Free-float Methodology improves index flexibility in terms of including any stock from the universe of listed stocks. This improves market coverage and sector coverage of the index. For example, under a Full-market capitalization methodology, companies with large market capitalization and low free-float cannot generally be included in the Index because they tend to distort the index by having an undue influence on the index movement. However, under the Free-float Methodology, since only the free-float market capitalization of each company is considered for index calculation, it becomes possible to include such closely-held companies in the index while at the same time preventing their undue influence on the index movement.

Globally, the Free-float Methodology of index construction is considered to be an industry best practice and all major index providers like MSCI, FTSE, S&P and STOXX have adopted the same. MSCI, a leading global index provider, shifted all its indices to the Free-float Methodology in 2002. The MSCI India Standard Index, which is followed by Foreign Institutional Investors (FIIs) to track Indian equities, is also based on the Free-float Methodology. NASDAQ-100, the underlying index to the famous Exchange Traded Fund (ETF) - QQQ is based on the Free-float Methodology.

Source : BSE