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Sectoral Indices
Click for Free-float Concept
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Index Calculation & Maintenance
Click to search Historical Notices on Index Replacements
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BSE also constructs various sectoral indices "Sector Series (90/FF)" as detailed below. All these indices are calculated and disseminated on BOLT, BSE's trading terminal on a real time basis. "90/FF" implies that the index covers 90% of the sectoral free-float market capitalization and is based on the Free-Float methodology.
BSE Sector Series (90/FF) Indices
Index Specification:
|
Index |
Base Period |
Base Index Value |
Date of Launch |
Method of Calculation |
|
|
01 February, 1999 |
1000 |
23 August, 2004 |
Free-float market capitalization |
|
|
01 January, 2002 |
1000 |
23 June, 2003 |
Free-float market capitalization |
|
|
01 February, 1999 |
1000 |
09 August, 1999 |
Launched on full market capitalization method and effective August 23, 2004, calculation method shifted to free-float market capitalization |
|
|
01 February, 1999 |
1000 |
09 Augus, 1999 |
Launched on full market capitalization method and effective August 23, 2004, calculation method shifted to free-float market capitalization |
|
|
01 February, 1999 |
1000 |
09 August, 1999 |
Launched on full market capitalization method and effective August 23, 2004, calculation method shifted to free-float market capitalization |
|
|
01 February, 1999 |
1000 |
09 August, 1999 |
Launched on full market capitalization method and effective August 23, 2004, calculation method shifted to free-float market capitalization |
|
|
01 February, 1999 |
1000 |
09 August, 1999 |
Launched on full market capitalization method and effective August 23, 2004, calculation method shifted to free-float market capitalization |
|
|
01 February, 1999 |
1000 |
23 August, 2004 |
Free-float market capitalization |
|
|
01 February, 1999 |
1000 |
23 August, 2004 |
Free-float market capitalization |
|
|
03 January, 2005 |
1000 |
09 November, 2007 |
Free-float market capitalization |
|
|
2005 |
1000 |
09 July, 2007 |
Free-float market capitalization |
Note: Scrip-wise market capitalization, weightage of each scrip in sectoral indices can be viewed by clicking on the index name given in the table above.
Number of scrips in each of the sectoral indices at BSE is variable as it aims to represent minimum of 90% free-float market capitalisation from the universe of BSE-500 index. Similar to other BSE indices, sectoral indices at BSE are also calculated and disseminated on real time basis.
Scrip Selection Criteria for BSE Sectoral Indices
Eligible Universe
Scrips classified under various sectors that are present constituents of BSE-500 index would form the eligible universe.
Trading Frequency
Scrips should have a minimum trading frequency of 90% in preceding three months.
Market Capitalization
Scrips with a minimum of 90% average free-float market capitalisation coverage in each sector based on free-float market cap final rank will form part of the the index.
Buffers
A buffer of 2% both for inclusion and exclusion in the index is considered so that movements in and out of the index are minimized. For example, a company can be included in the index only if it falls within 88% coverage and an existing index constituent cannot be excluded unless it falls above 92% coverage. However, the above buffer criterion is applied only after the minimum 90% free-float market capitalisaton coverage is satisfied.
Index Review Frequency
The BSE Index Committee meets every quarter to discuss index related issues. In case of a revision in the Index constituents, the announcement of the incoming and outgoing scrips is made six weeks in advance of the actual implementation of the revision of the Index.
