Reviewed on 24 Oct 2026 · Source: IPO Bulletin explainer; checked against BSE SME and NSE Emerge listing guidelines
An SME IPO is a public issue by a small or medium-sized company that lists on a dedicated exchange platform, such as BSE SME or NSE Emerge, instead of the main board. These platforms have lighter listing requirements than the mainboard, which lets smaller companies raise money from the public. The trade-off is higher risk for investors. SME companies are usually smaller, have shorter track records, and their shares trade less often, so prices can swing sharply and exits can be difficult. Application sizes are also larger: one lot usually costs Rs 1 lakh or more, so SME issues are aimed mostly at investors who can accept bigger bets. A market maker is required to quote prices for a period after listing to keep some trading going. Retail investors can apply, but the lot size and the risk level are very different from a mainboard issue. Read the offer document carefully, check the promoters’ track record, and understand that the exchange rules for SME stocks, including trading bands and later migration to the mainboard, are different.
Example: An SME IPO has a lot of 1,200 shares at Rs 100, so one lot costs Rs 1,20,000. A retail investor cannot apply for less than that amount, which is much higher than a typical mainboard minimum.
A market maker is a broker-dealer that is obliged to keep buying and selling the shares of a particular company so that investors can always find a buyer or seller. In India, market makers are mandatory for SME IPOs. The lead manager appoints at least one market maker, who commits to quoting two-way prices for the shares for a minimum period, typically three years from listing, and to maintain a minimum quote size and a maximum spread between the buy and sell price. This is needed because small-company shares trade thinly, and without a market maker a seller might not find any buyer at all. The market maker usually receives a part of the issue, often around five percent, as a reserved portion so that it can start with some inventory. It earns its income from the spread between buy and sell prices. For investors the presence of a market maker supports liquidity but does not protect against price falls. The name of the market maker and the reserved portion are stated in the offer document and shown on IPO Bulletin's SME IPO pages.
The lot size is the smallest number of shares you can apply for in an IPO, and every application must be a whole multiple of it. The company and its lead managers set the lot size so that one lot costs roughly Rs 14,000 to Rs 15,000 at the upper end of the price band for a mainboard issue. This keeps the smallest application inside the retail range, because a retail investor may apply for no more than Rs 2 lakh in total. If a lot is 100 shares and the upper price is Rs 150, one lot costs Rs 15,000 and a retail investor can apply for up to thirteen lots without crossing the limit. In SME issues lots are much larger, usually costing Rs 1 lakh or more, because the exchange sets a higher minimum application size for that segment. The lot size also decides how many shares you receive if you are allotted: you are never given a fraction of a lot. Always read the lot size in the price band announcement before you apply.
An SME IPO is a public issue by a small or medium-sized company that lists on a dedicated exchange platform, such as BSE SME or NSE Emerge, instead of the main board. These platforms have lighter listing requirements than the mainboard, which lets smaller companies raise money from the public. The trade-off is higher risk for investors. SME companies are usually smaller, have shorter track records, and their shares trade less often, so prices can swing sharply and exits can be difficult. Application sizes are also larger: one lot usually costs Rs 1 lakh or more, so SME issues are aimed mostly at investors who can accept bigger bets. A market maker is required to quote prices for a period after listing to keep some trading going. Retail investors can apply, but the lot size and the risk level are very different from a mainboard issue. Read the offer document carefully, check the promoters' track record, and understand that the exchange rules for SME stocks, including trading bands and later migration to the mainboard, are different.
Worked example
An SME IPO has a lot of 1,200 shares at Rs 100, so one lot costs Rs 1,20,000. A retail investor cannot apply for less than that amount, which is much higher than a typical mainboard minimum.
