The Reserve Bank of India (RBI) will simultaneously buy and sale government securities worth ₹10,000crore each in December 2019 under its open market operations — a move aimed at managing the yields. 

• The RBI will purchase the longer-term maturities, that are trading at a spread of 150 bps (basis points) over the repo rate, so that the yield of these papers will soften and sell the shorter duration ones. 
• The central bank said it will buy ₹10,000 crore of 6.45% government bonds maturing in 2029 and simultaneously sell ₹10,000 crore of short-term bonds maturing in 2020. 

• Operation Twist is a move taken by U.S. Federal Reserve in 2011-12 to make long-term borrowing cheaper. 

Source: The Hindu