Shares of Tata Chemicals gained up to 4 percent after the Reserve Bank of India (RBI) finalised revised guidelines for identifying upper-layer non-banking financial companies (NBFC-ULs). Under the new framework, NBFCs with an asset size of ₹1 lakh crore or more will be classified as upper-layer entities and become subject to stricter regulatory requirements, including public listing obligations.

The revised norms are widely seen as increasing the likelihood that Tata Sons, the holding company of the Tata Group, will eventually be required to list on the stock exchanges. While the RBI has not explicitly named Tata Sons in the final framework and the company's application for deregistration as an NBFC remains under consideration, the updated rules keep the possibility of a mandatory listing alive.

Investor sentiment towards Tata Chemicals improved because the company owns approximately a 3 percent stake in Tata Sons. A public listing of Tata Sons could potentially unlock value for shareholders of listed Tata Group companies with direct ownership in the parent company, leading to renewed buying interest in Tata Chemicals.

The RBI's revised framework replaces the earlier methodology for identifying upper-layer NBFCs with a simplified asset-based threshold, aiming to strengthen regulatory oversight of systemically important non-banking financial institutions. The central bank will continue to identify eligible entities periodically under the revised framework.