According to the Bombay Stock Exchange web site, as on July 21, 2006, these are the constituents of the Sensex and their sectors.

Housing related
1. Associated Cement Companies Ltd
2. Gujarat Ambuja Cements Ltd

Transport Equipments
3. Bajaj Auto Ltd
4. Hero Honda Motors Ltd
5. Maruti Udyog Ltd
6. Tata Motors Ltd.

Capital Goods
7. Bharat Heavy Electricals Ltd
8. Larsen & Toubro Limited

Telecom
9. Bharti Airtel Ltd
10. Reliance Communications Limited

Healthcare
11. Cipla Ltd
12. Dr Reddy's Laboratories Ltd
13. Ranbaxy Laboratories Ltd

Diversified
14. Grasim Industries Ltd

Finance
15. HDFC
16. HDFC Bank Ltd
17. ICICI Bank Ltd
18. State Bank of India

Metal, Metal Products & Mining
19. Hindalco Industries Ltd
20. Tata Steel Ltd

FMCG
21. Hindustan Lever Ltd
22. ITC Ltd

Information Technology
23. Infosys Technologies Ltd
24. Satyam Computer Services Ltd
25. Tata Consultancy Services Limited
26. Wipro Ltd

Power
27. NTPC Ltd
28. Reliance Energy Ltd

Oil & Gas
29. ONGC Ltd
30. Reliance Industries Ltd