Reliance Industries Ltd. 33.8 ONGC 14.5 BPCL 9.6 Indian Oil Corp. Ltd. 8.3 GAIL (India) Ltd. 8.0 Hindustan Petroleum Corp. 6.2 Oil India Ltd. 3.6 Petronet LNG Ltd. 3.6 Adani Total Gas Ltd. 3.0 Indraprastha Gas Ltd. 2.3 The remaining constituents (Gujarat Gas, Aegis Logistics, Castrol India, Gujarat State Petronet, and Mahanagar Gas) make up the balance of the index. This composition reflects the breadth and key players in India’s oil, gas, and petroleum sector.