Apart from Adani Enterprises, the other two firms listed by the exchanges are — Adani Ports and Special Economic Zone and Ambuja Cements. The parameters for shortlisting securities under ASM include high-low variation, client concentration, number of price band hits, close-to-close price variation and price-earning ratio. The National Stock Exchange (NSE) and BSE said these companies have satisfied the criteria for inclusion in short-term additional surveillance measure or ASM. Under the short-term ASM, the exchanges said, "applicable rate of margin shall be 50 per cent or existing margin whichever is higher, subject to maximum rate of margin capped at 100 per cent, with effect from February 6, 2023 on all open positions as on February 3, 2023 and new positions created from February 6, 2023". Market experts believe that putting in this framework means intra-day trading would require 100 per cent upfront margin.