SENSEX – overview
Posted on 21-10-2015
first compiled in 1986 was calculated on a "Market Capitalization-Weighted" methodology of 30 component stocks representing a sample of large, well-established and financially sound companies. The base year of SENSEX is 1978-79. The index is widely reported in both domestic and international markets through print as well as electronic media. SENSEX is not only scientifically designed but also based on globally accepted construction and review methodology. From September 2003, the SENSEX is calculated on a free-float market capitalization methodology. The "free-float Market Capitalization-Weighted" methodology is a widely followed index construction methodology on which majority of global equity benchmarks are based.
The growth of equity markets in India has been phenomenal in the decade gone by. Right from early nineties the stock market witnessed heightened activity in terms of various bull and bear runs. More recently, the bourses in India witnessed a similar frenzy in the 'TMT' sectors. The SENSEX captured all these happenings in the most judicial manner. One can identify the booms and bust of the Indian equity market through SENSEX.
The launch of SENSEX in 1986 was later followed up in January 1989 by introduction of BSE National Index (Base: 1983-84 = 100). It comprised of 100 stocks listed at five major stock exchanges in India at Mumbai, Calcutta , Delhi, Ahmedabad and Madras. The BSE National Index was renamed as BSE-100 Index from October 14, 1996 and since then it is calculated taking into consideration only the prices of stocks listed at BSE.
All BSE-Indices are reviewed periodically by the "Index Committee" of the Exchange. The Committee frames the broad policy guidelines for the development and maintenance of all BSE indices. Department of BSE Indices of the Exchange carries out the day to day maintenance of all indices and conducts research on development of new indices.
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