NSE Tweaks Lot Sizes in Select Stock Derivatives to Keep Contract Value in Check

What has changed:

NSE has updated the lot sizes for several stock F&O contracts as part of its periodic review mandated by SEBI, aimed at keeping the notional contract value broadly between ₹5–10 lakh. 

Most of the affected stocks have seen a modest increase in lot size, while a few, such as Eicher Motors, L&T Finance and Solar Industries, have seen reductions to bring contract values in line with the framework.

Notable updates in stock lots: (w.e.f. January 2026 Expiry)

• Bharat Dynamics: lot size revised from 325 to 350 shares per contract.
• HFCL: market lot raised from 6,450 to 7,125 shares.
• Inox Wind: lot size increased from 3,272 to 3,575 shares.
• KFin Technologies and KPIT Technologies: lots adjusted to 500 and 425 shares respectively, from 450 and 400 earlier.
• Mazagon Dock and Nuvama Wealth: lots raised to 200 and 100 shares, from 175 and 75 respectively.
• Petronet LNG: lot size revised from 1,800 to 1,900 shares; PG Electroplast from 700 to 950 shares.
• Piramal Pharma, REC and RVNL: lot sizes increased to 2,625, 1,400 and 1,525 shares respectively.
• Siemens, Sona BLW, Suzlon and Torrent Power: lot sizes increased to 175, 1,225, 9,025 and 425 shares.
• Varun Beverages: lot size revised from 1,025 to 1,125 shares.
• Eicher Motors, L&T Finance and Solar Industries: lots reduced to 100, 2,250 and 50 shares from 175, 4,462 and 75 respectively. 

Major takeaways for traders  

• Margin planning: Higher lot sizes in several stocks will push up per‑contract margin requirements, while reductions in names like Eicher Motors and Solar Industries could make participation more accessible for smaller traders.
• Contract rollover: Existing near-month contracts will continue with the current market lots; the revised sizes will apply only to fresh contracts from the specified expiries onward, so traders must check contract specifications while rolling positions.
• Risk management: The recalibration keeps the contract value more stable despite price rallies, helping traders manage position sizing, hedging strategies and risk better over time.

Sources: National Stock Exchange of India circular