Indian stock markets closed flat on the year's final expiry, influenced by mixed global cues and low trading volumes. Several key companies, including Titan, Indian Hotels, Bharat Forge, IndiGo, and Hyundai India, are in focus due to significant corporate news. Developments include Indian Hotels selling its stake in Taj GVK, Bharat Forge securing a Rs 1,661.9 crore defense contract, and IndiGo receiving a GST demand notice.