A Mainline IPO (also called a Mainboard IPO) is when a large company offers its shares to the public for the first time.
These companies get listed on major stock exchanges such as the National Stock Exchange (NSE) or Bombay Stock Exchange (BSE).
🏢 Who Can Launch a Mainline IPO?
Companies with post-issue capital of ₹10 crores or more.
Must meet SEBI’s eligibility criteria, including profitability, net worth, and corporate governance standards.
💡 Key Features
Feature
Description
Exchange
Listed on NSE or BSE
Company Size
Large, well-established firms
Minimum Capital
₹10 crores post-issue
Investor Categories
Retail, Institutional, and Non-Institutional
Subscription Period
Typically 3 working days
🔍 Mainline vs SME IPOs
Aspect
Mainline IPOs
SME IPOs
Company Size
Large companies
Small & Medium Enterprises
Listing Platform
NSE/BSE Mainboard
NSE/BSE SME Platform
Investor Base
Wider, includes institutions
Mostly retail investors
Regulatory Norms
More stringent
Relaxed norms
📊 Example Snapshot
Orkla India IPO (Oct 2025)
Price Band: ₹695–₹730
Issue Size: ₹1,667.54 Cr
Subscription: 0.79x overall
📊 What Are Mainline IPOs?
A Mainline IPO (also called a Mainboard IPO) is when a large company offers its shares to the public for the first time and gets listed on a major stock exchange like the NSE or BSE in India.
🏢 Who Can Launch a Mainline IPO?
Companies with post-issue capital of ₹10 crores or more
Must meet SEBI’s eligibility criteria, including:
Minimum net tangible assets
Track record of profitability
Corporate governance standards
💡 Key Features
Feature
Description
Exchange
NSE or BSE Mainboard
Company Size
Large, established firms
Investor Categories
Retail, Institutional, HNIs
Regulatory Norms
Stringent SEBI guidelines
Subscription Period
Typically 3 working days
🔍 Mainline vs SME IPOs
Aspect
Mainline IPOs
SME IPOs
Company Size
Large companies
Small & Medium Enterprises
Listing Platform
NSE/BSE Mainboard
NSE/BSE SME Platform
Investor Base
Wider, includes institutions
Mostly retail investors
Regulatory Norms
More stringent
Relaxed norms
📌 Why It Matters
Offers investment opportunities in well-known companies