NSE has announced a revision in lot size of F&O contracts of NIFTY, FINNIFTY and MIDCPNIFTY indices. - The lot size of NIFTY has been revised from 50 to 25 - FINNIFTY from 40 to 25 - MIDCPNIFTY from 75 to 50 - No changes in the lot size of BANKNIFTY Heres when the new lot sizes come into effect. 15.7K viewsedited 15:46