Sebi also asked the NSE to deposit the profit from its co-location operation to the tune of Rs. The matter pertains to some broking firms having preferential access to the NSE’s high-speed algorithmic trading platform through its colocation service between 2011 and 2014. Some of the trading members were able to consistently log in to the NSE systems before the rest. Thereafter, Sebi ordered a forensic audit of NSE systems and the brokerage firms that secured an alleged unfair advantage. Till date, NSE systems and these brokerage firms have undergone at least 6 audits.

Source: Mint April 30, 2019 15:22 UTC