Replication data for: "Information Disclosure versus Structural Friction: Evaluating Regulatory Efficacy in the Presence of Composition Bias

Monthly panel dataset (144 observations, April 2013–December 2025) and Stata replication code for: "Information Disclosure versus Structural Friction: Evaluating Regulatory Efficacy in the Presence of Composition Bias." Contains equity derivatives notional turnover from SEBI Bulletin, CDSL individual active demat accounts, India VIX, and regime classification variables. All source data are publicly available. Replication code produces Tables II–VI (main text) and Tables VII–IX and Appendix A (supplementary).