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NSE co-location scam

Indian stock exchange scam

  • 17 min read
  • 6 chapters

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Through Securities and Exchange Board of India

The NSE co-location case is under investigation by the Central Bureau of Investigation (CBI), the Securities and Exchange Board of India (SEBI) and the Income Tax Department who are probing the involvement of NSE and SEBI officials, as well as NSE's former and current executives and brokerages.

In 2019, the Madras High Court issued a notice to SEBI, MCA, ED in response to a Public Interest Litigation (PIL) filed by the Chennai Financial Markets and Accountability (CFMA).

Background

In January 2010, the NSE began offering a co-location facility to members. Members could place their servers in the Exchange's premises in return for a fee. This allowed them faster access to the buy and sell orders being disseminated by the exchange's trading engine. The term 'co-location' means 'a setup wherein the broker's computer is located in the same area as the stock exchange's server.' In addition, High-frequency trading (HFT) or algorithmic trading refers to the use of electronic systems, which can potentially execute thousands of orders on the stock exchange in less than a second. Also, retail investors monitoring prices are subject to a delay as compared to the tick-by-tick data broadcast a user receives in a co-location facility. Unusually, the SEBI did not put out a discussion paper to collect market feedback before permitting to proceed with the facility. There are no public records on HFT executed on the NSE. SEBI needs to consult with Technical Advisory Committee (TAC) for such market developments. However, no notification was received from SEBI in regard to it approving for all exchanges. During that time, the managing director of the NSE was Ravi Narain and C. B. Bhave was the chairman of SEBI. It is mentioned in passing in the NSE's 2009-10 annual report statement: "In keeping with global trends, the exchange has provided members a co-location facility for low latency high frequency trading. The Co-location data center is an international standard, state of the art, highly robust, resilient and secure infrastructure."

The whistle-blower's letter that was addressed to SEBI and copied to the leading financial magazine, Moneylife. clearly stated that:

when the co-location was started by NSE it took some time for the more enterprising to figure out what was happening in the system. By the end of the year, smart people had all figured out the way to game the system lay in being the first one to connect to the server and preferably the server, which was fastest.

The co-location case was initiated when certain members associated with HFT allegedly teamed up and worked in coalition for about four years, i.e. 2010- 2014 overriding rules and regulations set in place by SEBI, the market regulator. According to an unnamed individual familiar with SEBI's investigation: "Access to co-location facilities and HFT trading gave the select brokers differential advantage such as display of market data, viewing order book prior to order execution."

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