Revision in lot size of Bank Nifty from 30 to 35 and Midcap Nifty from 120 to 140

Circulars
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In line with SEBI’s new rules mandating a minimum contract value of ₹15 lakhs for index derivatives, NSE has announced revised lot sizes for Bank Nifty and Nifty Midcap Select. These changes will take effect from April 25, 2025.

Sr Underlying Index Symbol Existing Lot Size Revised Market Lot
1 Nifty Bank BANKNIFTY 30 35
2 Nifty Midcap Select MIDCPNIFTY 120 140

Note:

  • Lot sizes for existing monthly contracts (expiring on April 24, May 29, and June 26, 2025) will remain unchanged.
  • The new lot size will apply from the July 2025 expiry (July 31, 2025). This will be the first monthly contract with new lot size
  • All quarterly contracts traded from April 25, 2025, will follow the revised lot size.

You can check the circular from NSE here:

https://nsearchives.nseindia.com/content/circulars/FAOP67372.pdf

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What will happen to existing positions?

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You have to revise the position to a multiple of the new lot size, or the position cannot be squared off till the expiry of the contract.

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