FinNifty
NSE's financial-services index and the derivatives on it. Smaller contract than Bank Nifty, broader than banks, and a monthly-only expiry since 2024.
In short: FinNifty is the trading name of the Nifty Financial Services index, a free-float market-cap weighted index of 20 NSE-listed financial companies: banks, non-bank lenders, insurers, housing-finance and other financial firms. NSE lists monthly futures and options on it, with a lot size of 60 and expiry on the last Tuesday of the month.
What the index holds
Where Bank Nifty stops at banks, FinNifty takes the whole financial sector from the Nifty 500 universe. In practice the two share their largest names, because the biggest private banks are also the biggest financial companies in India. The difference is the tail: FinNifty adds the large NBFCs, the listed life and general insurers, housing-finance companies and, at times, exchanges and asset managers. Those names respond to different things, such as bond yields, insurance regulation and credit-cycle data, which is what gives FinNifty a personality of its own.
The index is reviewed semi-annually, and weights are capped at each rebalance. Following the revision NSE Indices announced on 1 December 2025 to meet SEBI's eligibility norms for indices with derivatives, the three largest constituents are limited to 19%, 14% and 10%, which replaced the earlier rule of a 33% single-stock cap. Between rebalances the weights float with prices.
The contract
| Underlying | Nifty Financial Services index (NSE) |
|---|---|
| Lot size | 60 units (from January 2026; previously 65) |
| Expiry | Monthly only, last Tuesday of the month (previous trading day if a holiday) |
| Weekly contract | Discontinued from November 2024 under SEBI's one-weekly-index-per-exchange rule |
| Strike interval | 50 points |
| Style and settlement | European, cash-settled against the final settlement price |
Contract value is index level multiplied by lot size. Suppose FinNifty is at 26,000: one lot controls ₹15,60,000 of index exposure. NSE adjusts lot sizes so that this value stays inside the band SEBI prescribes, which is why the lot has changed several times.
Worked example (illustrative numbers)
Suppose FinNifty is at 26,000 with twelve days to the last-Tuesday expiry, and the 26,000 call trades at ₹210. One lot costs 210 × 60 = ₹12,600 of premium. If the index settles at 26,400, the call is worth 400 points and the buyer's profit is (400 − 210) × 60 = ₹11,400. If it settles at 25,900 the call expires worthless and the buyer loses the ₹12,600 paid.
The same trade on Bank Nifty at the same percentage move would involve a lot of 30 units at a higher index level; on Nifty, 65 units at a lower one. Comparing exposure per lot across the three indices is a routine first step before choosing which chain to trade, and it changes every time NSE revises a lot size.
Why it matters to an options trader
- Sector exposure without single-stock risk. A view on the financial sector as a whole, including the non-bank lenders and insurers, maps to FinNifty better than to Bank Nifty.
- A different expiry rhythm. With Nifty expiring every Tuesday and FinNifty only on the last Tuesday, FinNifty's option chain builds open interest over a full month, so its OI walls and PCR describe a month's positioning rather than a week's.
- Relative-value trades. The Bank Nifty–FinNifty spread is a clean way to express a view on NBFCs and insurers against banks.
- Liquidity. FinNifty options are liquid in the near strikes of the current month and thin elsewhere. Far strikes and next-month contracts need limit orders and patience.
Common mistakes
- Trading it as a weekly. Older guides, and some screens, still describe a Tuesday weekly expiry. There has been none since November 2024.
- Assuming Bank Nifty's lot size or strike gap. FinNifty is 60 units at 50-point strikes; Bank Nifty is 30 units at 100-point strikes.
- Expecting it to move like Bank Nifty point for point. The non-bank constituents damp the index on bank-specific news and move it on their own catalysts.
- Ignoring rebalance dates. Weight caps are re-applied at each rebalance; a constituent that has run up can be cut back, which shows up as flows in the stocks and in the futures basis.
Indian-market specifics
- SEBI's October 2024 circular allows each exchange one weekly-expiry index. NSE kept Nifty 50; Bank Nifty, FinNifty and Nifty Midcap Select became monthly-only. BSE kept Sensex weekly on Thursday.
- Lot sizes after the January 2026 revision: Nifty 65, Bank Nifty 30, FinNifty 60, Midcap Select 120.
- Securities Transaction Tax from 1 April 2026 is 0.15% of the premium on the sell side and 0.15% of intrinsic value on exercise, so an in-the-money option left to settle at expiry costs more in STT than one closed in the market.
- Constituent changes and cap revisions are published by NSE Indices in advance of each rebalance; the December 2025 cap revision was applied to FinNifty in a single tranche at the end of that month.
FAQ
What is the FinNifty lot size?
60 units per contract since January 2026. NSE revises lot sizes periodically to keep contract value within SEBI's band.
When do FinNifty options expire?
Last Tuesday of the month, monthly only. The weekly contract ended in November 2024 and the expiry day moved from Thursday to Tuesday in September 2025.
How is FinNifty different from Bank Nifty?
Bank Nifty is 14 banks; FinNifty is 20 financial companies including NBFCs, insurers and housing finance. The largest names overlap.
What are the FinNifty constituent weight caps?
19%, 14% and 10% for the three largest constituents at each rebalance, under the December 2025 revision; previously a 33% single-stock cap.
FinNifty option chain, max pain and PCR
The FinNifty chain shows strike-wise open interest, PCR and max pain from the latest close for the current monthly expiry; the app adds the live chain and the Scan Board view across all the index contracts.
Related terms
- Bank Nifty
- Lot Size
- Expiry
- Financial services sector page, the constituents' own option chains