Revision in Scheme of Strikes in Stock Options · NSE/FAOP/75809
NSE circular NSE/FAOP/75809 · 18 Aug 2026
Official record
Open source pageSummary
Check the official recordWhat changed
The National Stock Exchange of India Limited updates the strike price scheme for the security KALYANKJIL. This change defines new step values and strike counts for narrow and wide ranges. Trading members must load the updated contract file into their trading applications before the effective date. The exchange provides the updated contract files through the Extranet server and the official website. All other securities remain subject to existing strike schemes and step values.
What you must do
- Load the updated contract.gz or MII contract file on the trading application before trading.
Key dates
- Effective from
- 20 Aug 2026
- Effective date for the revised strike scheme.
- 20 Aug 2026
Document text
NSE Nifty50
National Stock Exchange of India Limited
Circular
| Department: FUTURES & OPTIONS | |
| Download Ref No: NSE/FAOP/75809 | Date: August 18, 2026 |
| Circular Ref. No: 116/2026 | |
All Members,
Revision in Scheme of Strikes in Stock Options
This is in continuation to Exchange circular download ref no: NSE/FAOP/74758 dated June 18, 2026, regarding the revision of scheme of strikes in stock options.
Members are requested to note that, applicable step values and number of strikes to be available for trading w.e.f August 20, 2026 in following security shall be as per below:
| Symbol | Narrow Range | Wide Range | Narrow Range | Wide Range | Narrow | Wide | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Near Step Value | Mid Step Value | Far Step Value | Near Step Value | Mid Step Value | Far Step Value | Near Strike Scheme | Mid Strike Scheme | Far Strike Scheme | Near Strike Scheme | Mid Strike Scheme | Far Strike Scheme | Near Reserve strike | Mid Reserve strike | Far Reserve strike | Near Reserve strike | Mid Reserve strike | Far Reserve strike | |
| KALYANKJIL | 10 | 10 | 20 | 20 | 20 | 40 | 6 | 6 | 3 | 5 | 5 | 2 | 12 | 12 | 6 | 10 | 10 | 4 |
Further, applicable step values and number of strikes available for trading for all other securities shall remain unchanged.
Members are advised to load the updated contract.gz/ MII contract (NSE_FO_contract_ddmmyyyy.csv.gz) file on the trading application before trading on effective date August 20, 2026. These files can be obtained from the directory faoftp/faocommon on the Extranet server.
Additionally, the MII contract file is also available on NSE website on the below path: https://www.nseindia.com/all-reports-derivatives
For and on behalf of
National Stock Exchange of India Limited
Khushal Shah
Associate Vice President
| Toll Free No | Email id |
|---|---|
| 1800-266-0050 (Option 1) | msm@nse.co.in |
Source details
- Source
- National Stock Exchange of India
- Type
- circular
- Published by source
- 18 Aug 2026
- Document number
- NSE/FAOP/75809
- Issuing division
- FUTURES & OPTIONS
- Effective date
- 20 Aug 2026
- Coverage area
- securities