Almost all the companies have replied to Sebi's queries in this regard.
According to top officials, the regulator is taking a tough stand on the companies that fail to fix individual responsibility for any leak of price-sensitive information. Besides, the market operators, including staff members of some brokerage firms, are also under the scanner for colluding with the company executives in the case, which came to light late last year.
Among various companies from which Sebi had sought details through its interim orders, HDFC Bank last week disclosed in a regulatory filing that it has submitted the requisite information to the regulator.
Referring to Sebi's February 23 directions, HDFC Bank said, "In this regard, and keeping with its commitment to the highest standards of corporate governance and the integrity of its systems, controls and processes, the Bank has submitted the requisite information and reports to Sebi in compliance with the Sebi directions and within the timelines prescribed therein."
Sebi had asked the bank to conduct internal investigations to identify those guilty of the leak and take steps to check any recurrence, and also provide necessary information to the regulator within three months.
Apart from HDFC Bank, the regulator has already passed initial orders against Tata Motors, Axis Bank and Bata India in this high-profile case, wherein they were asked to conduct internal probes and report back to the regulator. The probe concerns about a dozen listed firms.
The preliminary probe by Sebi found that the firms' quarterly financial results were matching with the figures that were in circulation on WhatsApp groups prior to the official announcement.
Sebi began a probe in November after a media report surfaced with respect to circulation of unpublished price sensitive information in various private WhatsApp groups about certain companies before their official announcements.
The regulator had also conducted search and seizure operations in this regard at various places, including on the premises of various market entities.
Those being probed by Sebi include auditors, brokers, analysts and investment advisors, besides the company executives, with whom the financial information was shared before being made public through regulatory disclosure on stock exchanges.