“We have received several proposals and will soon put out final guidelines in this regard,” said a person privy to the development.
“Sebi’s new proposal would bring standardisation of the co-location (colo) facility. Most of the measures proposed earlier were regressive in nature. The new framework would be progressive in terms of equitable access without impacting liquidity,” said a source.
In 2015, Sebi began investigations after it received multiple complaints that some brokers had allegedly got preferential access to the National Stock Exchange’s (NSE's) colo facility. According to the source, the consultation paper is being prepared keeping in mind the best global practices and considering cost benefit analysis, which was not effectively done in the previous proposal.
Sebi’s new framework would ensure that liquidity is not impacted. For that, the regulator may put a cap on “order to trade ratio” to give level playing field. This could be done by formalising market maker scheme.
“To improve liquidity, the regulator should formalise the market-making scheme. There should be differentiated treatment and regulation in terms of market participation. The regulator should economically incentivise market makers rather than disincentivising all market participants uniformly,” said Harjeet Singh, consultant, department of economic affairs, ministry of finance.
Under the revised proposal, the regulator is said to be focusing on a real-time surveillance system so that it could get minute-by-minute surveillance of algo trades and, thereby, detect and prevent malfunctioning.
This could be done by improving the existing infrastructure and ramping up the systems by having an advance template of superior technology.
Currently, there is no structured data available at a prescribed time interval to provide real-time feed for surveillance.
Besides, Sebi also wants to have standarisation of colo facility, so that all participants would have fair and equitable access. “Publishing real-time colo-based latencies would help bring in transparency as well as provide benchmarking against global exchanges,” said Singh.
The regulator is not in favour of allowing retail participation in HFT at present. “It is not advisable as it would be highly risky for individual investors to use automated trading systems. The regulator wants to have guidelines in place first and it could perhaps consider domestic individual investors at a later stage,” said one of the sources cited above. Sebi also plans to address and mitigate the chance of flash crash and fat-finger trades.
Algo trading is a software programme designed to execute automated trades on fulfilment of certain criteria. These are typically trading strategies that make use of complex mathematical models. The most common is arbitrage, which tries to profit from differential pricing of the same security at the same time on different exchanges. According to the Sebi data, a little over 80 per cent of the orders placed are generated by algorithms. Such orders contribute to about 40 per cent of the trades on exchanges (not all orders result in trades).
The review of the HFT regulation was triggered by the NSE co-location controversy, where some brokers and officials allegedly made illegal gains through preferential access to the server. After the controversy, Sebi had published a discussion paper and had proposed seven ways to level the playing field between HFT traders and others. These included revising the order sequence, introducing a minimum resting time between HFT orders, and uniform access to market data.
To have real-time surveillance of all orders and trades
To detect malfunctioning while putting algo trades
To mitigate chances of 'flash crash' and fat-finger error
Standardisation of co-location facility to discourage preferential access
Exchanges to publish colo-based latency on their platforms to have equitable access
Formalise market-making scheme by capping 'order to trade' ratio
Differentiated policies surrounding this ratio would reduce chances of squeezing liquidity