SME IPO vs mainboard IPO: what is the difference?
Updated 19 October 2026
Indian IPOs list either on the main exchange boards or on the separate SME platforms — NSE Emerge and BSE SME. The two look similar on an IPO page, but they work differently and carry different risks.
Size of the company and the issue
Mainboard IPOs are usually larger companies raising hundreds or thousands of crores. SME IPOs are small and medium enterprises, often raising a few crores to a few tens of crores.
Minimum application
Mainboard lots are designed so that one lot costs roughly ₹15,000. SME lots are much bigger — usually a minimum application of more than ₹1 lakh — which puts SME IPOs beyond many small investors and concentrates risk.
Who checks the offer document
Mainboard offer documents are filed with and observed by SEBI. SME offer documents are reviewed by the stock exchange platform instead. Disclosure requirements are lighter, so you need to read the document more carefully yourself.
Trading after listing
- SME shares trade in lots, not single shares, so you can only buy or sell in multiples of the lot.
- Trading volumes are usually thin, so it can be hard to sell at the price you want.
- Market makers are appointed to provide some liquidity, but spreads can still be wide.
Why people say SME IPOs are riskier
Small companies have less track record, fewer analysts follow them, and a few large orders can move the price sharply. High subscription numbers and big grey market premiums are common in SME IPOs and are not a reliable sign of quality.