Starting September 4, 2023, NSE will be revising strike schemes for USDINR options contracts, to bring more efficiency in trading of USDINR options. As per the new scheme, along with strikes at intervals of 0.25, there will be 3 ITM, 1 ATM and 3 OTM strikes available for trading at intervals of 0.125.
| Particulars | Existing Strike Price and Strike Interval | Revised Strike Scheme and Strike Interval |
|---|---|---|
| All weekly and near monthly expiry | Strike Interval of INR 0.25 with 12-1-12 number of strikes (ITM-ATM-OTM) | Strike Interval of INR 0.125 with 3-1-3 number of strikes (ITM-ATM-OTM) |
| AND | ||
| Strike Interval of INR 0.25 with 12-1-12 number of strikes (ITM-ATM-OTM) (includes strikes generated due to 0.125 strike interval) | ||
| Middle-month, Far-month and Quarterly expiries | Strike Interval of INR 0.25 with 12-1-12 number of strikes (ITM-ATM-OTM) | No change |
Others points to be noted:
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Accordingly, all subsequent new weekly expiry cycles introduced from September 01, 2023 (end of the day) will be based on the revised strike scheme in USDINR options.
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All un-expired weekly and near-month expiries created before September 01, 2023 and available for trading from September 04, 2023 will follow the revised strike scheme from September 01, 2023 (end of the day).
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On the expiry day of the near-month contract, the strike scheme in the middle month contract will be available as defined for the near-month contract. For example, on trade date September 26, 2023, the near-month expiry cycle having expiry date of September 26, 2023, will expire at 12.30 pm. The strike scheme in the middle-month expiry cycle having expiry date of October 27, 2023, will be as defined for new near-month expiry cycle from the start of the trading day itself.