The gross open position limit for all brokers currently stands at up to 15 per cent of the total open interest or USD 100 million, whichever is higher.
"However, for bank stock brokers, as authorised by RBI, the gross open position across all contracts shall not exceed 15 per cent of the total open interest or USD 1 billion, whichever is higher," Sebi said in a circular.
The move is aimed at maintaining orderly conditions in the domestic foreign exchange market and the decision is based based on the recommendation from RBI, Sebi said.
In April last year, Sebi had raised the transaction limit in exchange traded currency derivatives to USD 15 million, from USD 10 million previously, for both foreign and domestic investors without having any underlying exposure.
Requirement of an underlying exposure had been placed to check speculation in the currency market.