The lot sizes for Index F&O contracts are as follows:
NSE
| Index | Symbol | New lot size |
| Nifty 50 | NIFTY | 65 |
| Nifty Bank | BANKNIFTY | 30 |
| Nifty Financial Services | FINNIFTY | 60 |
| Nifty Midcap Select | MIDCPNIFTY | 120 |
| Nifty Next 50 | NIFTYNXT50 | 25 |
BSE
| Index | Symbol | New lot size |
| BSE Sensex | SENSEX | 20 |
| BSE Bankex | BANKEX | 30 |
| BSE Sensex 50 | SENSEX50 | 75 |