What Is Sensex ?

BSE Sensex or Bombay Stock Exchange Sensitive Index is a value-weighted index composed of 30 stocks started in 01 of jan, 1986. It consists of the 30 largest and most actively traded stocks, representative of various sectors, on the Bombay Stock Exchange. These companies account for around one-fifth of the market capitalization of the BSE. The base value of the sensex is 100 on April 1, 1979, and the base year of BSE-SENSEX is 1978-79.

At irregular intervals, the Bombay Stock Exchange (BSE) authorities review and modify its composition to make sure it reflects current market conditions. The index is calculated based on a free-float capitalization method; a variation of the market cap method. Instead of using a company's outstanding shares it uses its float, or shares that are readily available for trading. The free-float method, therefore, does not include restricted stocks, such as those held by company insiders

List of Companies in Sensex:-

(As of January 12, 2009)

Code	Name	Sector	Adj. Factor
532174	ICICI Bank	Finance	1.00
500510	Larsen & Toubro	Capital Goods	0.90
500010	HDFC	Finance	0.85
500180	HDFC Bank	Finance	0.85
500209	Infosys	Information Technology	0.85
500300	Grasim Industries	Diversified	0.75
500520	Mahindra & Mahindra Limited	Transport Equipments	0.75
500400	Tata Power	Power	0.70
500440	Hindalco Industries	Metal, Metal Products & Mining	0.70
500470	Tata Steel	Metal, Metal Products & Mining	0.70
500875	ITC Limited	FMCG	0.70
500390	Reliance Infrastructure	Power	0.65
500570	Tata Motors	Transport Equipments	0.65
532532	Jaiprakash Associates	Housing Related	0.60
500410	ACC	Housing Related	0.55
500325	Reliance Industries	Oil & Gas	0.50
500696	Hindustan Lever Limited	FMCG	0.50
532500	Maruti Udyog	Transport Equipments	0.50
500112	State Bank of India	Finance	0.45
500359	Ranbaxy Laboratories	Healthcare	0.40
500900	Sterlite Industries	Metal, Metal Products, and Mining	0.40
524715	Sun Pharmaceutical Industries	Healthcare	0.40
500103	BHEL	Capital Goods	0.35
532454	Bharti Airtel	Telecom	0.35
532712	Reliance Communications	Telecom	0.35
532540	Tata Consultancy Services	Information Technology	0.25
500312	ONGC	Oil & Gas	0.20
507685	Wipro	Information Technology	0.20
532555	NTPC	Power	0.15
532868	DLF Universal Limited	Housing related	0.15