Gautam Adani is looking to expand his ports empire by closing in on buying a 65-70 per cent stake in Krishnapatnam Port, the entity promoted by Hyderabad-based CVR Group to run a private deep-water port at Krishnapatnam in Andhra Pradesh’s Nellore district. Adani Ports and Special Economic Zone (APSEZ) is expected to pay over Rs 5,500 crore to buy the stake.