ESM Stage 2 Rules Revised: The Securities Exchange Board of India (Sebi) and Exchanges, in a joint surveillance meeting held on July 25, revised the criteria for shortlisting stocks and deciding their stage-wise progression under the Enhanced Surveillance Measure (ESM) framework. Under the new framework, only those stocks already placed in Stage I and trading at a price-to-earnings (PE) ratio of zero or below, or at a PE ratio exceeding twice that of the Nifty 500 index, will be moved to Stage II.