India Index Services & Products Ltd. (IISL) is a joint venture between the National Stock Exchange of India Ltd. (NSE) and CRISIL Ltd. (formerly the Credit Rating Information Services of India Limited). IISL has been formed with the objective of providing a variety of indices and index related services and products for the capital markets.
IISL has a consulting and licensing agreement with Standard & Poor's (S&P), for co-branding IISL's equity indices.