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Beginner Guide

IPO Investment Guide for Beginners: Everything You Need to Know

01 Apr 2026 8 min read MainboardGMP Team
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What Is an IPO?

An Initial Public Offering (IPO) is the process by which a privately held company offers shares to the public for the first time on a stock exchange such as the NSE or BSE. It's essentially the company's invitation for retail investors to become part-owners.

For investors, IPOs present a unique opportunity to get in at the ground level — before shares are freely traded in the secondary market. However, they also carry unique risks that differ from buying an already-listed stock.

Key Terms Every IPO Investor Must Know

DRHP (Draft Red Herring Prospectus): The document filed with SEBI containing all details about the company — its financials, risk factors, promoter background, and intended use of funds. Reading this is non-negotiable before any IPO investment.

Price Band: The range within which you can bid for shares. For example, ₹190–₹200 means you can bid anywhere in that range, but allotment happens at the final cut-off price.

Lot Size: The minimum number of shares you must apply for. IPOs are allotted in lots — you can't apply for half a lot. Each lot's value is typically kept between ₹13,000–₹15,000 for retail investors per SEBI norms.

Subscription Ratio: How many times the IPO was subscribed vs. shares available. An oversubscription of 10x means 10× more applications than available shares — a useful signal of investor appetite.

The IPO Application Process (Step by Step)

Applying for an IPO in India is done through ASBA (Application Supported by Blocked Amount). Your application amount is blocked in your bank account and only debited if you receive allotment. Here's how it works:

  1. Log into your broker's platform (Zerodha, Groww, Upstox, etc.) or your bank's net banking.
  2. Navigate to the IPO section and find the open issue you want to apply for.
  3. Choose your lot quantity and bid price (usually the upper end of the price band for maximum allotment chance).
  4. Submit your UPI mandate or bank ASBA form. The amount is blocked, not debited.
  5. Wait for allotment — usually 6 business days after the IPO closes.

Increasing Your Allotment Chances

When an IPO is heavily oversubscribed, allotment is done via computerised lottery. SEBI mandates that every retail applicant gets an equal chance, regardless of how many lots they applied for. The common strategies are:

  • Multiple demat accounts: Each family member can apply separately — one application per PAN card.
  • Apply at the cut-off price: This means you accept the final issue price, ensuring your bid isn't rejected.
  • Apply on Day 1: Avoid last-minute UPI glitches by applying early in the subscription window.

Understanding the Allotment and Listing Process

After the IPO closes, the registrar (like KFin or Link Intime) processes all applications. You can check allotment status on their website using your PAN or application number. If you receive allotment, shares are credited to your demat account on T+6 day. Listing happens on T+6, when shares start trading freely on the exchange.

Final Thoughts

IPOs can be rewarding, but they're not guaranteed profits. Always read the DRHP, understand the business model, and assess valuation before applying. Use tools like MainboardGMP to track Grey Market Premium (GMP) — it's an unofficial but widely-watched indicator of listing sentiment.