The initial public offer will see sale of 200,190,000 equity shares --10 per cent stake -- by the central government through an offer for sale (OFS) route, as per the Draft Red Herring Prospectus (DRHP).
San Francisco-based Anaplan, which helps companies with business planning, is in the early stages of prepping an IPO for 2017, according to sources familiar with the matter.
NSE said an external panel had found potential instances of some traders having preferential access to its network through co-location facilities - where private servers are placed at exchanges to speed up algorithmic trading.
The offer may give the National Stock Exchange a valuation of Rs 50,000-55,000 crore, sources said, adding that the IPO itself could be worth about Rs 10,000 crore.
The exchange also said its trading systems may have been "prone to manipulation," while noting that a lack of protocols on data retention meant that emails and information for some former employees were unavailable.
According to EY, the December quarter witnessed a robust performance for IPOs in India and this promising trend is expected to reverberate during next year as well.
Laurus Labs makes active pharmaceutical ingredients or APIs that go into the making a range of medicines, chiefly HIV/AIDS drugs.
RInfra is the second firm to file the DRHP after Sterling Power's India Grid Trust filed its offer document with the SEBI for raising around Rs 2,650 crore early this month.
So far in 2016, 26 companies have managed to collectively raise over Rs 26,000 crore through their respective IPOs.
The initial public offer is likely to see existing shareholders, including BSE, offloading shares through the offer-for-sale (OFS) route.