Dematerialised public shareholding threshold determines trading eligibility; non compliant scrips moved to Trade for Trade and disclosure enforced. Trading in the normal segment is conditional on a company having achieved at least fifty percent non promoter holding in dematerialised form; failure to meet this requirement based on the latest quarterly shareholding pattern will result in migration of the scrip to the Trade-for-Trade segment. Specified corporate events and certain listing circumstances will also require initial trading in the Trade-for-Trade segment with applicable price band provisions, and exchanges must ensure required disclosures are publicly disseminated prior to trading.