The IPO market is far from over and the new issue market has had frenetic activity in the last 5.9 years, with nearly 155 companies having collectively raised nearly Rs. 272657.11 Cr. through initial shares - sales. The last few years have seen an increase in applications for buying initial shares. In IPO market, not every applicant gets an allotment in an over-demanded company as it is based on a lottery; investors get upset and then stop investing in the IPO over time. So without restricting till allotment, it is important that investors need to think about what kind of benefits or returns can be gained in the long run without stopping the investment just because of not getting allotment in IPO. Therefore, the main objective of the study was to analyse the performance of companies that came up with an IPO in the last 5.9 years at the National Stock Exchange in India. Researchers also tried to analyse the impact of IPO's offer size on listing gain and long-term gain. An attempt has been made to develop the module on Non Exclusive IPO Listing Day Investment Plan (NEILIP) and (EILIP-OS<Rs.2, 500 Cr.) for the stocks on listing day at NSE. To check the impact Z-test was used. Tabulation forms were used for developing the module. The study found significant impact of offer size below Rs.2, 500 cr. on listing gain as well as long-term gain. Internal rate of returns were found higher in NEILIP than Systematic investment Plan (SIP) and Fixed Deposit (FD). The study concluded that IPO investment option is more beneficial if investment done in the IPO is as per the offer size on listing day. This study will be beneficial to new retail investors. There will be new ways of understanding IPO investing which will help investors to build more sustainable wealth by diversifying and cutting out risk. The study suggests investors should not get upset because of non-allotment, in fact they could enjoy gains by making investment on listing day with less risk

IPO, listing gain, IPO offer size, allotment, SIP, FD, NEILIP, EILIP