as a Reliable and Trusted News Source Addas a Reliable and Trusted News Source Add Now! The changes will apply specifically to quarterly and half-yearly contracts expiring after December 30, while weekly and monthly contracts will continue with the existing lot sizes until that date.The revised market lots affect four major indices. Since the lot size is tied to margin and exposure, a smaller lot size could lower the notional value per contract, which may influence how they plan their trades.For retail investors, the reduced lot size might make it slightly more accessible to participate in some index contracts, as the capital needed to trade one lot could reduce if the index price remains steady. : Recommendations, suggestions, views and opinions given by the experts are their own. These do not represent the views of The Economic Times)