The deal values MCX at Rs 600 a share, a discount of nearly 24 per cent to Friday's closing price of Rs 783.5 on the National Stock Exchange. Also, there is a steep discount to the price at which MCX issued shares to the public in March 2012 (Rs 1,032 a share).

The value of the country's largest commodity exchange in Kotak's purchase comes to Rs 3,060 crore; its market capitalisation by Friday's closing price stands at Rs 3,996 crore.

The deal has to be approved by the Forward Markets Commission (FMC) and the Securities and Exchange Board of India. The former's approval is seen as procedural, as Kotak Mahindra already owns a commodity exchange (the ACE), while the latter will have to clear FTIL from the lock-in of its 20 per cent stake at the time of MCX's listing two years ago.

The holding of FTIL, which earlier had a 26 per cent stake in the commodity exchange, will come down to only five per cent.

It had already diluted six per cent through open-market transactions and investor Rakesh Jhunjhunwala had raised his holding in MCX to a little above four per cent.

After the remaining five per cent stake has been sold, FMC would clear the way for approving new MCX contracts, which were put on hold till the exchange ensured an FTIL exit.

Financial Technologies' exit plan from the exchange business began after promoter Jignesh Shah resigned from MCX as a director ahead of Diwali last year, in the wake of the National Spot Exchange payment crisis. In December 2013, FMC passed an order declaring FTIL, Jignesh Shah and two others 'not fit and proper' to run a commodity exchange. As a result, FTIL was forced to sell stake.

"We have agreed to take a significant minority stake in MCX. We are excited by the potential presented by the financial infrastructure space in the country and believe an investment in MCX, with its significant franchise, will create long-term value," said Uday Kotak, executive vice-chairman and managing director of Kotak Mahindra Bank.