Algorithmic trading or 'algo' in market parlance refers to orders generated at a super-fast speed by use of advanced mathematical models that involve automated execution of trade, and it is mostly used by large institutional investors.
The regulator said that stock exchanges will have to ensure that immediate or cancel orders are not placed through the algo trade route.
To promote fair use of the trading platform, Sebi said there will be some economic disincentives for algo trades based on the order-to-trade ratio.
According to Sebi, commodity exchanges will be able to process 20 orders per second from a user, irrespective of the order size. In case the order-to-trade ratio of a member reaches 500 during a trading day, the member will not be allowed to place any order for the first 15 minutes on the next trading day as a cooling off action.
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Co-Location, Co-Hosting involves setting up servers on the exchange premises, which puts some members in disadvantageous position vis-a-vis other members would not be allowed.
"Algorithmic trading shall not be permitted from exchange hosted CTCL terminals," Sebi added.
The regulator asked commodities exchanges to submit a monthly report on algo trading, including its percentage in total trade and the number of members of using such trading.
While approving the algo trading, the exchanges would have to ensure that they would not approve algo trade that may not be conducive to efficient price discovery or fair play.
The exchanges would have arrangements, procedures and system capability to manage the load on their systems in such a manner so as to achieve consistent response time to all members.
The capacity of the trading system of the exchange should be at least four times the peak order load encountered and the exchange system should be upgraded on a regular basis.