When exploring investment opportunities in the Indian stock market, investors often come across two types of Initial Public Offerings (IPOs): Mainboard IPOs and SME IPOs. Both allow companies to raise funds from the public and get their shares listed on a stock exchange, but they differ in terms of company size, listing requirements, application amounts, trading arrangements, and investment risks.
Mainboard IPOs are generally associated with larger businesses, while SME IPOs provide smaller and medium-sized enterprises with access to the capital market.
Understanding the difference between Mainboard IPO and SME IPO can help investors evaluate an issue, understand its requirements, and make informed investment decisions.
What Is a Mainboard IPO?
A Mainboard IPO is a public offering through which a company offers its shares for listing on the main equity platforms of recognised stock exchanges such as the National Stock Exchange (NSE) and the Bombay Stock Exchange (BSE).
Companies seeking a Mainboard listing generally have larger operations and must satisfy the applicable eligibility, disclosure, and listing requirements.
Mainboard IPOs may include businesses from sectors such as banking, information technology, manufacturing, healthcare, infrastructure, and consumer goods.
After listing, investors can trade the company’s shares through the stock exchange, subject to the applicable trading rules.
What Is an SME IPO?
An SME IPO is a public offering through which a small or medium-sized enterprise raises funds and lists its shares on a dedicated SME platform.
In India, the two major SME platforms are:
- NSE Emerge, operated by the National Stock Exchange.
- BSE SME, operated by the Bombay Stock Exchange.
These platforms provide smaller businesses with a route to raise capital for expansion, working capital, technology upgrades, and other disclosed business purposes.
SME IPOs have specific eligibility and compliance requirements. Investors should also understand that trading in SME shares can involve larger application sizes and different liquidity conditions compared with many Mainboard stocks.
Mainboard IPO vs SME IPO: Key Differences
The following table highlights the major differences between the two IPO categories.
| Particulars | Mainboard IPO | SME IPO |
| Company size | Generally larger businesses | Small and medium-sized businesses |
| Listing platform | Main NSE and BSE equity platforms | NSE Emerge or BSE SME |
| Company eligibility | Mainboard eligibility requirements | SME-specific eligibility requirements |
| Application amount | Retail applications are commonly around ₹10,000–₹15,000, depending on the issue price and lot size | Minimum application amount is generally ₹1 lakh or more, subject to current rules |
| Minimum lot size | Retail investors can generally apply for one lot | Usually involves a larger application and trading lot |
| Investor participation | Retail, non-institutional and institutional categories, as applicable | Investor categories and participation requirements depend on current regulations |
| Market making | No general SME-style mandatory market-making requirement | Mandatory market-making arrangements apply |
| Trading liquidity | Often supported by broader market participation | Liquidity may be limited, depending on the company and trading activity |
| Financial disclosures | Applicable Mainboard disclosure and reporting requirements | SME-specific disclosure and reporting requirements |
| Investment risk | Depends on the company’s fundamentals and market conditions | May involve additional liquidity and volatility risks |
The actual application amount, lot size, eligibility conditions, and trading arrangements should always be checked in the latest offer document and exchange rules.
- Difference in Company Size and Eligibility
One of the main differences between Mainboard IPOs and SME IPOs is the size and eligibility of the issuing company.
Mainboard IPOs are generally suitable for companies that meet the applicable requirements for listing on the main equity platforms.
SME IPOs are designed for smaller businesses that meet the eligibility requirements of the relevant SME exchange.
For example, a growing manufacturing company that wants to expand its production capacity may explore an SME IPO if it meets the applicable criteria. A larger company with established operations may consider a Mainboard IPO.
However, company size alone does not determine whether an IPO is suitable for an investor. Financial performance, valuation, business risks, and the purpose of the issue also matter.
- Difference in IPO Application Amount and Lot Size
The minimum investment amount is an important consideration for retail investors.
In a typical Mainboard IPO, the retail application amount may be around ₹10,000 to ₹15,000 for one lot, depending on the issue price and lot size.
SME IPOs generally require a larger application amount. Under the current framework, the minimum SME IPO application is generally at least ₹1 lakh, with the applicable amount and lot size specified in the offer document.
For example, suppose an investor wants to apply for an IPO with a minimum application amount of ₹1,20,000. The investor must arrange sufficient funds for the application and follow the applicable bidding and payment requirements.
A larger minimum investment can make SME IPOs less accessible to investors with smaller investment budgets.
- Difference in Listing Platforms
Mainboard IPOs list on the main equity platforms of NSE and BSE.
SME IPOs list on dedicated SME platforms, such as NSE Emerge or BSE SME.
The listing platform affects how shares are traded and which trading arrangements apply.
Investors should check the exchange on which the company is proposed to list before applying for an IPO. They should also understand the applicable trading lot and any restrictions that may affect buying or selling shares.
- Difference in Market Making and Liquidity
Market making is an important feature of SME platforms.
SME IPOs generally have mandatory market-making arrangements under the applicable exchange rules. A market maker provides buy and sell quotes to support trading in the shares.
However, market making does not guarantee that an investor can sell shares immediately or at a desired price.
SME stocks may have fewer active buyers and sellers compared with some Mainboard stocks. As a result, investors may face difficulty exiting their investment, especially when trading activity is low.
Mainboard stocks may benefit from broader participation, but liquidity also varies significantly between companies.
Therefore, investors should evaluate actual trading volumes and market conditions rather than assuming that every Mainboard stock is highly liquid or every SME stock is difficult to trade.
- Difference in Investment Risk
Both Mainboard IPOs and SME IPOs involve investment risk. The level and type of risk depend on the individual company and the market environment.
SME IPOs may involve additional considerations, including:
- Smaller business operations and limited operating history.
- Dependence on a small number of customers or suppliers.
- Limited liquidity in the secondary market.
- Greater price volatility.
- Higher minimum investment requirements.
Mainboard IPOs can also involve substantial risks, including expensive valuations, high debt, weak financial performance, and uncertain business prospects.
Investors should not assume that a company is a good investment simply because it is launching a Mainboard IPO or that an SME IPO is automatically unsuitable.
The company’s financial statements, offer document, valuation, and disclosed risk factors should be reviewed in both cases.
- Difference in Financial Disclosure and Regulatory Requirements
Both Mainboard IPOs and SME IPOs are subject to applicable securities laws and exchange regulations.
However, the specific eligibility, disclosure, reporting, and listing requirements can differ between the two platforms.
For a Mainboard IPO, investors should review the Draft Red Herring Prospectus (DRHP), Red Herring Prospectus (RHP), and other relevant disclosures.
For an SME IPO, investors should also review the offer document carefully, including the company’s financial statements, risk factors, promoter details, and intended use of the funds.
The SME platform does not mean that investors can ignore regulatory disclosures. Reading the offer document is essential before applying for any public issue.
Can an SME Company Move to the Mainboard?
Yes. An SME-listed company may be eligible to migrate to the Mainboard if it satisfies the applicable regulatory and stock exchange requirements.
Migration is not automatic. The company must meet the relevant conditions and complete the required process.
A Mainboard migration may provide access to a different listing platform and broader investor participation, but it does not guarantee improved share prices, higher liquidity, or better financial performance.
Investors should evaluate a company’s actual business progress rather than relying only on the possibility of future migration.
How to Evaluate a Mainboard IPO or SME IPO
Before applying for an IPO, investors can review the following factors:
- Company fundamentals: Understand the business model, products, services, and competitive position.
- Financial performance: Examine revenue, profitability, debt, cash flow, and financial trends.
- IPO valuation: Compare the issue price with financial performance and relevant listed companies.
- Purpose of the issue: Check whether the funds will be used for expansion, debt repayment, working capital, or an offer for sale.
- Risk factors: Read the risks disclosed in the offer document.
- Liquidity: Understand the trading platform, lot size, and potential difficulty of selling shares.
- Investment budget: Consider whether the minimum application amount fits your financial situation.
An IPO’s subscription figures or grey market premium should not be treated as guarantees of listing gains or future returns.
Conclusion
Mainboard IPOs and SME IPOs provide different routes for companies to enter India’s public capital market. They differ in listing platforms, eligibility requirements, application amounts, trading arrangements, and potential liquidity.
Before applying, investors should understand these differences and carefully examine the company’s financial position, valuation, and risk factors. The decision should be based on the individual IPO and the investor’s financial circumstances rather than the listing category alone.
Disclaimer: This article is for educational purposes only and does not constitute investment advice or a recommendation to apply for any IPO.
