NSE to Cut F&O Lot Sizes for Nifty, Bank Nifty & More; New Rules from 2026

• NSE will reduce F&O lot sizes for Nifty 50, Bank Nifty, Nifty Financial Services, and Nifty Midcap Select indices.
• Nifty 50 lot size drops from 75 to 65, Bank Nifty from 35 to 30, Nifty Financial Services from 65 to 60, and Nifty Midcap Select from 140 to 120. Nifty Next-50 remains unchanged.
• New lot sizes will be effective from the January 2026 cycle, after the December 30, 2025 expiry for existing contracts.
• The change is mandated by SEBI to maintain contract values between 10-15 lakh, aiming to enhance market efficiency and liquidity.
• Retail investors will benefit from lower capital requirements, potentially boosting market participation; traders must adjust position sizing and margin calculations.

Why It Matters: NSE reduces F&O lot sizes for key indices from 2026, making derivatives more accessible for retail investors.