Why Are IPO Shares Divided Into Categories?
SEBI mandates that IPO shares in a book-built offering be divided across different investor categories to ensure fair and structured access for all types of investors — from large institutions to small retail participants. Each category has its own allocation quota, eligibility criteria, and allotment methodology. Understanding which category you fall into and how allotment works in that category is essential for every IPO investor.
Category 1 — Qualified Institutional Buyers (QIB)
QIBs are the largest and most sophisticated investors in the IPO ecosystem. This category includes mutual funds, commercial banks, insurance companies, foreign portfolio investors, pension funds, and venture capital funds registered with SEBI. In a standard book-built IPO, 50% of the total issue size is reserved for QIBs. Of this QIB portion, up to 60% can be further allocated to anchor investors one day before the subscription opens. QIBs do not pay the full application amount upfront — they pay only 10% at the time of application and the balance after allotment.
Category 2 — Non-Institutional Investors (NII) or HNI
The NII category — commonly referred to as HNI or High Net Worth Individual — covers investors who apply for shares worth more than ₹2 lakhs in a single application. This category is further divided into two sub-categories as per SEBI's revised guidelines. The small HNI or sHNI sub-category covers applications between ₹2 lakhs and ₹10 lakhs, and the big HNI or bHNI sub-category covers applications above ₹10 lakhs. In a standard IPO, 15% of the total issue is reserved for the NII category. Allotment in this category is done on a proportionate basis, not through a lottery.
Category 3 — Retail Individual Investors (RII)
The retail category is for individual investors applying for shares worth up to ₹2 lakhs per application. This is the most accessible category and the one that most individual investors in India participate in. In a standard book-built IPO, 35% of the total issue is reserved for retail investors. When the retail category is oversubscribed, allotment is done through a computerized lottery where every valid retail application gets one equal chance regardless of the number of lots applied for.
Category 4 — Employee Reservation Portion
Many companies reserve a portion of their IPO specifically for their existing employees as a way of rewarding them for their contribution to the company's growth. The employee reservation portion is separate from the main issue size and employees can apply at a discount to the issue price — typically between 5% and 10% below the cap price. This category has its own independent allotment process and does not compete with retail or HNI applications.
Category 5 — Shareholder Reservation Portion
Some IPOs — particularly those involving subsidiaries or associate companies of already listed entities — reserve a portion of shares for existing shareholders of the parent or holding company. Shareholders who hold shares of the related listed company as of a specified record date are eligible to apply in this reserved category, usually at the same price as the main issue or at a small discount.
How Does Your Category Affect Your Allotment Chances?
Your investor category significantly affects how allotment is determined. Retail investors benefit from the lottery system which gives every applicant an equal chance, regardless of application size. NII investors receive proportionate allotment which means larger applications receive proportionately more shares when the category is oversubscribed. QIBs receive discretionary allotment managed by the company and lead managers. Understanding your category helps you set realistic allotment expectations before applying.
Conclusion
Knowing which IPO investor category you belong to and how allotment works in that category is fundamental to planning your IPO investment strategy. Whether you are a retail investor relying on the lottery system or an HNI applicant benefiting from proportionate allotment, each category has its own dynamics that directly impact your returns. Track category-wise subscription data in real time for all active IPOs on IPOView to make smarter application decisions.