India Index Services and Products (IISL), an NSE group company, has launched a series of six AAA-rated corporate bond indices for the Indian bond markets. The Nifty AAA Corporate Bond Index series comprises five indices across different maturities and one composite index.

Each of the five maturity-based indices represents performance of liquid corporate bonds falling in specific residual maturity buckets. The composite index, on the other hand, covers all five distinct maturity buckets to represent the dynamics of the entire AAA corporate yield curve. The base date for all the indices is December 31, 2013, and base value 1,000.

The index composition will be reviewed on a quarterly basis. The indices will be calculated on an end-of-day basis.