About Nifty Bank
The Nifty Bank (commonly called “Bank Nifty”) tracks the 12 most liquid and large-cap Indian banking stocks listed on the National Stock Exchange. It captures both public sector banks (SBI, PNB, Bank of Baroda) and large private sector banks (HDFC Bank, ICICI Bank, Axis Bank, Kotak Mahindra Bank, IndusInd Bank).
Why Bank Nifty matters
Banking is the single largest sector in the Nifty 50 (~35% weight) and the most rate-sensitive segment of the Indian economy. Bank Nifty therefore tends to amplify directional moves in the broader index — its beta to the Nifty is typically 1.2 to 1.4. This makes Bank Nifty F&O the most actively-traded index derivatives in India by volume and open interest.
Sub-sectoral lens
Public sector banks (PSBs) carry lower weights but higher volatility — moves driven by NPA recognition cycles, government recapitalisation, and policy reform. Private banks dominate the index by weight and tend to drive day-to-day moves with their quarterly results and asset quality updates.
Trading specifics
Nifty Bank weekly options expire every Wednesday. The contract is the most actively-traded index option contract in India by volume. Lot size: 15 (as of latest revision).