The policymaker said the RBI had not reached the point where specific actions were under consideration.
Sebi also approved new delisting rules.
Consumer food price inflation, under a new series published by the government, eased to 5.59 per cent last month from 7.67 per cent in September.
Despite no change in interest rates, India's largest lender, State Bank of India, last week became among the latest to lower deposit rates, often a precursor to lower lending rates, something some banks have already done for certain consumer loans.
Companies are legally allowed to invest in markets in India, but the practice has seldom stirred central bank concern until recently, when they have become much more active players.
Sebi has asked clearing houses to establish separate funds for all segments of the market including equity, debt and currency.
The drive against insider trading comes after SEBI last year received enhanced investigation powers from parliament, including the ability to monitor call records.
Both companies can now complete the deal.
The Securities and Exchange Board of India (SEBI) unveiled new proposals, broadening the scope of who can be held liable for insider trading violations.
The market regulator is wielding an unprecedented level of control over how mutual funds operate, delaying new launches and dictating investment strategy, frustrated insiders in the embattled industry say.
It was put on hold in 2008 after the global financial crisis.
The RBI cracked down on offshore foreign exchange trading by Indians through online trading websites.
The Indian rupee slumped to a record low near 69 to the dollar on Wednesday on growing worries that foreign investors will continue to sell out of a country facing stiff economic challenges and volatile global markets.
RBI banned banks from proprietary trading and Sebi doubled the margin requirement on the domestic dollar-rupee forward trade.