NSE Lot Size Change 2025: Key Indices See Reduction as the National Stock Exchange (NSE) introduces major revisions in lot sizes for its derivative contracts. The NSE lot size change 2025 update affects key indices such as Nifty 50, Bank Nifty, and Nifty Financial Services, marking a significant shift in India’s derivatives trading landscape.
This NSE lot size reduction follows growing discussions about adjustments in weekly and daily expiries on GIFT Nifty, and aligns with SEBI’s ongoing efforts to enhance trading efficiency. Traders and investors should review the NSE lot size change 2025 details carefully to understand how these new rules impact Futures and Options (F&O) positions from October 2025 onward.
According to NSE, the new lot size rules will take effect from October 28, 2025, in line with SEBI’s latest guidelines.
Schedule for New NSE Lot Size Rules
The revised NSE lot sizes will apply to:
- Weekly and monthly contracts: Starting from January 2026 expiry
- Quarterly and half-yearly contracts: Effective from December 30, 2025
This change is part of NSE’s ongoing efforts to align market practices with investor convenience and trading efficiency.
NSE Lot Size Changes 2025 – Full List
As per the official NSE circular, the following updates will apply to derivatives contracts:
| Index | Old Lot Size | New Lot Size |
|---|---|---|
| Nifty 50 | 75 | 65 |
| Bank Nifty | 35 | 30 |
| Nifty Financial Services | 65 | 60 |
| Nifty Midcap Select | 140 | 120 |
| Nifty Next 50 | 25 | Unchanged |
Source: NSE
These NSE lot size reductions are expected to make derivatives trading more accessible, especially for retail participants.
Other Key NSE Derivatives Updates
The NSE circular also highlights that certain contract combinations — including November 2025–January 2026, December 2025–January 2026, and December 2025–February 2026 — will not have day spread order books available.
All NSE trading members are advised to:
- Inform clients about the changes
- Update trading applications with the latest contract files available on NSE’s extranet server
Record Growth in NSE Investor Base
In another milestone, NSE’s registered investor base crossed 12 crore unique investors as of September 23, 2025. The total number of investor accounts has surged to 23.5 crore, up from 23 crore in July 2025.
NSE’s investor growth has accelerated sharply in recent years:
- It took 14 years to reach the first 1 crore investors
- The next 1 crore came in 7 years
- Another 1 crore followed in just 3.5 years
- By March 2021, NSE reached 4 crore investors, adding 1 crore more in just 6–7 months
With its IPO preparations underway, this rapid growth reflects NSE’s expanding reach and the rising retail participation in India’s capital markets.
Introduction of Nifty 50 Index Options with Daily Expirations (0DTE) on GIFT Nifty
Meanwhile, National Stock Exchange(NSE) will introduce a daily expiry on GIFT Nifty contracts, it said in a notice late on 29 September. GIFT Nifty is a dollar-denominated derivative contract of the Nifty 50. These zero-day-to-expiry(0DTE) contracts will be introduced with effect from October 13.
These 0DTE options contracts will be available for trading at NSE IFSC Ltd with effect from October 13, 2025.
The contract specifications of the 0DTE contracts are as given below:
| Instrument Name | OPTIDX |
| Symbol | NIFTY |
| Tick Size | US $ 0.5 |
| Expiry date | Five serial Weekly expiries from Monday to Friday expiring on daily basis |
| Contract cycle | 0DTE Option contracts shall have weekly expiry on each day of the week. These options contracts shall be introduced on each trading day with weekly expiry excluding NSEIX market holidays. |
source :NSEIX
All other contract specifications shall be in line with the weekly expiring NIFTY 50 option contracts as mentioned in the Exchange circular ref. no. NSEIFSC/TRADE/2129 dated May 08, 2025, and NSEIFSC/TRADE/2199 dated July 02, 2025.
There will be no change in the structure of any of the reports provided by the Exchange.
The salient features are:
- On the date of introduction of 0DTE contracts (October 13, 2025), five serial weekly expiry contracts will be available for trading.
- On each trading day, the applicable 0DTE options contracts shall expire at 3.30 PM IST. Additionally, new 0DTE options contracts, as applicable, shall be made available for trading after 3.30 pm IST, ensuring that five serial weekly expiry contracts remain available for trading at all times
In case the expiry of any 0DTE options contracts coincides with any existing contracts (weekly or monthly), no duplicate contract shall be generated. The same contract shall be treated as the 0DTE contract.
The settlement procedure and other details have been intimated separately by NSE IFSC Clearing Corporation Limited (NSEICC).
Disclaimer:
The information presented in this article is based on publicly available data and official updates from the National Stock Exchange (NSE) as of 2025. While every effort has been made to ensure accuracy, readers are advised to verify details directly from the official NSE website (www.nseindia.com) before making any trading or investment decisions. This article is for informational purposes only and does not constitute financial advice.
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Kangkan Kishor Sharma, an M.A. in Media and Journalism, serves as the Chief Contributor at NestOfNews.com. He contributes regularly, bringing insight, passion, and a deep commitment to delivering stories that truly matter. His work reflects a thoughtful understanding of media, storytelling, and the issues shaping today’s world.