Shares of Tata Chemicals and Tata Investment Corporation surged by up to 12% on the Bombay Stock Exchange (BSE) amid speculation regarding a potential public listing of their parent company, Tata Sons. As of 2:19 PM, Tata Chemicals was trading 4.34% higher, while Tata Investment was up 8.64%, contrasting with the 0.85% decline of the BSE Sensex at 76,891.56. Tata Sons holds a 31.9% stake in Tata Chemicals and 68.51% in Tata Investment, making both stocks sensitive to developments about the listing. The rally follows renewed calls from the Shapoorji Pallonji Group, which owns 18.4% of Tata Sons, advocating that the listing is crucial for unlocking investor value. Chairman Shapoorji Pallonji Mistry emphasized that a public listing would benefit over 120 million shareholders of listed Tata companies and enhance the transparency of dividend streams for Tata Trusts, the philanthropic arm of the group. However, the proposal faces opposition from Tata Trusts, which fears that a public listing could dilute control over the group’s listed entities. This push for listing gains importance as the Reserve Bank of India classified Tata Sons as an “upper-layer” non-banking financial company (NBFC), requiring it to list within three years of this designation.