The Nifty Financial Services Index (also known as FinNifty) is a sectoral index maintained by NSE Indices Limited comprising 20 of the most liquid financial sector companies listed on NSE — broader than the Nifty Bank index as it includes not only banks but also NBFCs, housing finance companies, insurance companies, asset management companies, and payment companies. Constituents include major banks (HDFC Bank, ICICI Bank, SBI, Axis Bank, Kotak Mahindra Bank) alongside financial conglomerates like Bajaj Finance, Bajaj Finserv, HDFC Life, SBI Life, ICICI Prudential Life, ICICI Lombard, Muthoot Finance, and other diversified financial service providers. The index uses free-float market capitalisation weighting and is reviewed semi-annually by NSE Indices. FinNifty has become the underlying for weekly derivatives contracts on NSE — with FinNifty options expiring every Tuesday providing an active hedging and trading instrument specifically for financial sector exposure. The broader composition of FinNifty compared to Bank Nifty means it captures the performance of India's diversified financial ecosystem — including the insurance penetration story, NBFC-led retail credit growth, and the emerging fintech and digital payments theme — alongside traditional banking sector dynamics. For investors seeking sectoral exposure to India's financial services sector beyond just banks, FinNifty ETFs and index funds provide a more diversified single-instrument access to the full spectrum of India's financial intermediation industry.