The National Stock Exchange (NSE) will reduce the lot sizes of several key Indian index futures and options starting October 28. The change applies to Nifty 50, Nifty Bank, Nifty Financial Services, and Nifty Mid‑Select futures, while the Nifty Next 50 contracts will stay the same.
New lot sizes
- Nifty 50 – from 75 contracts to 65
- Nifty Bank – from 35 contracts to 30
- Nifty Financial Services – from 65 to 60
- Nifty Mid‑Select – from 140 to 120
Existing contracts that expire before December 30, 2025 can keep trading with the old lot sizes. After that date, every new contract—regardless of maturity—will use the revised, smaller lot sizes.
Why the change matters
The NSE says lowering lot sizes brings the contract value into a more standard range, making them easier to afford for a wider group of traders. A smaller lot size also means traders expose themselves to less market risk and pay lower margin requirements, which can boost liquidity and overall market efficiency.
What traders need to do
- Keep an eye on the upcoming expiry dates: monthly and weekly contracts with current lot sizes expire on December 23, and the remaining monthly contracts expire on December 30.
- Inform any clients holding positions or planning new positions in quarterly or half‑yearly contracts about the upcoming lot‑size change.
These revisions aim to keep the derivatives market competitive and accessible. Traders should prepare for the new lot sizes to ensure smooth transitions and avoid surprises when they place future orders.
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