Changes in Lot Size
What are the new lot sizes for index derivatives?
SEBI has increased the lot sizes for various index derivatives to ensure that the contract value ranges between ₹15 lakh and ₹20 lakh.
Effective 31stDec 2025 new lot size will be 65 for NIFTY.
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Sr. No.
Index
Market Lot Effe. from 2nd Jan, 2025
Market Lot Effe. from 30th June, 2025
Market Lot Effe. from 31st Dec, 2025
1
Nifty 50
75
75
60
2
Nifty Bank
30
35
30
3
Nifty Financial Services
65
65
60
4
Nifty Midcap Select
120
140
120
5
Nifty Next 50
25
25
25
6
BSE Sensex
20
20
20
7
BSE Bankex
30
30
30
8
BSE Sensex 50
60
70
70
For long-dated Nifty and Bank nifty:
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Index Derivatives
Expiration Cycle
Expiry Date
Particulars
NIFTY
Quarterly & Half Yearly
31-Mar-2026*
Lot size of all existing quarterly and half yearly expiry contracts will be revised from December 30, 2025 (EOD) i.e.,65
BANK NIFTY
Quarterly
31-Mar-2026*
Lot size of all existing quarterly expiry contracts will be revised from December 30, 2025 (EOD) i.e.,30
* Please note, the March 2026 contract which was introduced as quarterly contract will become far month contract of the respective index derivatives on December 2025 monthly expiry day (EOD)