F&O stands for Futures and Options, which are contracts that derive their price from an underlying asset, such as shares, commodities, currencies, bonds, and more. Futures and options are traded in the derivatives market, and they allow traders to speculate on the future price movements of the underlying asset.

Groww is an online trading platform that allows users to trade in futures and options. To begin trading in F&O on Groww, users need to create a trading account with a broker where they can buy and sell futures and options contracts. Once the account is created, users can log in to their Groww account and click on F&O from the list of options available below the top gainers. This will take them to the option chains, where they can see all the available contracts, including index options, stock options, index futures, and stock futures. Users can choose the contract they prefer and place their F&O order by clicking on the Buy or Sell option.

In summary, F&O in Groww refers to the ability to trade in futures and options contracts on the Groww platform.