How to Analyse an IPO Before Investing — Red Flags and Green Flags

My First IPO Experience (And What It Taught Me)

I applied for my first IPO in 2017 with ₹15,000. I had no idea what I was doing. I saw everyone talking about it on social media, the grey market premium was high, and I assumed it would be a guaranteed profit. I got allotment, the stock listed at a 30% premium, and I sold immediately. I felt like a genius.

Then I applied for the next five IPOs with the same approach. Two gave me decent listing gains. One listed flat. Two actually listed below the issue price, and I lost ₹8,000. That’s when I realized I needed to actually evaluate IPOs instead of blindly applying for everything.

What an IPO Actually Is

An IPO (Initial Public Offering) is when a private company sells shares to the public for the first time. The company raises capital, early investors get an exit, and public investors get access to a new stock. Simple enough. But the evaluation process requires genuine analysis.

How to Read the DRHP

The Draft Red Herring Prospectus is the IPO Bible. It contains everything about the company: financials, business model, risks, use of funds, and promoter details. I know reading a 400-page document isn’t fun, but you don’t need to read all of it. Focus on these sections:

Business Overview: What does the company actually do? Is it in a growing industry? Does it have a clear competitive advantage?

Financial Statements: Look at the last 3 years of revenue, profit, and cash flow. Is revenue growing consistently? Is the company profitable, or is it burning cash? Check the debt levels.

Risk Factors: Every DRHP lists risks. Read them carefully. Some risks are standard boilerplate. Others are company-specific red flags. I once avoided an IPO because the risk section mentioned ongoing legal disputes worth ₹500 crore.

Objects of the Issue: Where will the IPO money go? If it’s going towards debt repayment, that’s less exciting than money going towards expansion. If most of the IPO is an “offer for sale” where existing promoters are selling shares, ask yourself: why are the insiders selling?

Key Metrics for IPO Evaluation

PE Ratio: Compare the IPO’s PE ratio with listed peers. If the company is priced at 60x earnings while similar companies trade at 30x, you’re paying a premium. Check our PE and PB ratio guide for detailed understanding.

Revenue Growth: Look for consistent 15-25% annual growth over the last three years. Erratic growth or declining revenue is a red flag.

Promoter Holding: After the IPO, promoters should retain at least 50-60% stake. If they’re diluting heavily, they might be looking to exit. High promoter retention signals confidence in the business.

Profit Margins: Net profit margins above 10% for services companies and above 5% for manufacturing indicate healthy operations. Loss-making IPOs can work (like Zomato), but they carry higher risk.

Grey Market Premium: What It Really Tells You

The grey market premium (GMP) is the unofficial price at which IPO shares trade before listing. If an IPO is priced at ₹100 and the GMP is ₹50, the market expects it to list around ₹150. But GMP is not a guarantee.

I’ve seen IPOs with ₹80 GMP list at just ₹30 premium. And IPOs with low GMP surprise with strong listing gains. Use GMP as one data point, not the only data point.

Real IPO Case Studies

Zomato IPO (2021): Listed at 51% premium. Was loss-making at the time but had massive revenue growth. Investors who held long-term saw 2x returns by 2024 as the company turned profitable.

LIC IPO (2022): India’s largest IPO. Listed at a discount and stayed below issue price for months. The lesson? Size doesn’t guarantee success. The pricing was aggressive, and the business model wasn’t growing fast enough to justify the valuation.

Tata Technologies IPO (2023): Listed at 140% premium. Strong parentage, profitable business, and reasonable pricing made it a winner. Shows that fundamental quality matters.

Listing Day Strategy vs Long-Term Holding

Some investors only play IPOs for listing day gains, selling immediately at a premium. This works when the market is hot and IPOs are oversubscribed. But it’s not consistent income. Some IPOs list flat or below issue price.

My approach now: if I believe in the business fundamentally, I hold for at least 6-12 months post-listing. Initial volatility settles, and the stock finds its true value. Keep track of your IPO investments in a trading journal to evaluate which approach works better for you over time.