Before the listing of stock, can we sell the stock allotted to us in an IPO?

You cannot do this in the stock exchange. This can be done through the grey market, or the over-the-counter market by a trusted broker in your area.

Stock exchanges open a special trading session for price discovery on the day of the IPO stock listing. This session is known as the Pre-open session. Pre-open sessions last 45 minutes (9:00 - 9:45 AM). Orders can be entered, modified or canceled during this time.

Notice:

1. The demand and supply of IPO shares during the pre-open session determine the listing price for the IPO share on day of listing.
2. The price will be determined between 9:45 and 10 AM. The pre-open sessions also have this time for orders. These orders are based on the following scenarios:
3. If the listing price is higher or equal to the price that you have pre-opened in order to sell in preopen, your shares will be sold at the listing prices in the preopen trading session.
4. Your pre-open order will be cancelled if the listing price falls below the sell price in the preopen market.
5. Trading in IPO shares is open to the public at 10:00 AM on the day of listing.