Earlier this month, Diageo agreed to buy a majority stake in United Spirits, controlled by businessman Vijay Mallya, for $2.1 billion, fuelling a push by the world's biggest spirits group into fast-growing markets.
The tender offer, which is part of the two-tranche deal that will give Diageo a 53.4 percent stake in India's largest spirits company, will close on January 18, JM Financial said in a notice to the exchange on Tuesday.
Shares in United Spirits ended up 0.6 percent at 1,762 rupees, higher than Diageo's offer of 1,440 rupees a share to minority shareholders. The sharp jump in the stock has clouded the outcome of the tendering process, analysts said.
United Spirits shares have risen more than 30 percent since the announcement of the deal on November 9.