IDFC's shares opened the day on a strong note and further gained 8.71 per cent to Rs 139.15 on the BSE.
At the NSE, the stock rose by 8.76 per cent to Rs 139.
The Reserve Bank had yesterday granted an in-principle approval to IDFC and Bandhan Financial Services to foray into the banking business.
The approval will be valid for a period of 18 months, during which the applicants have to comply with the requirements under the guidelines and fulfil other conditions as may be stipulated by the RBI, said IDFC in a filing to the BSE today.
Until a regular licence is issued, the applicants would be barred from doing banking business.