Indian Oil Corporation (IOC) has reported a net profit of Rs 12,967.32 crore in the three months ending September 30, driven by higher refining and marketing margins. This represents more than half of its best-ever annual profit in just one quarter. The profit was aided by a boost in marketing margins, as well as a freeze on petrol and diesel price revisions, which helped recover losses incurred when oil prices were high last year. IOC sold 21.941 mn tn of petroleum products in the Sept quarter