The RBI on Tuesday announced another “Operation Twist” as it sought to cool down bond yields, which have breached the 6-per-cent-mark.

The central bank said that it will conduct simultaneous purchase and sale of government securities under Open Market Operation for an aggregate amount of Rs 20,000 crore in two tranches of Rs 10,000 crore each.

The auctions would be conducted on August 27 and September 3. This is the third such auction conducted by the central bank during this fiscal. The previous such auction was conducted for Rs 10,000 crore in July 2 and April 27.