India’s IPO market had a very strong August. New share sales drew huge demand, and many stocks made a sharp debut on the exchanges. For investors who entered at the issue price, the month offered some of the best short-term returns seen this year.
But a strong month can also create a new problem. When investors see large gains soon after an IPO, they may expect the same result from the next issue. That can push demand higher and make valuations more aggressive. At some point, the price of a new IPO can rise so much before the debut that there is less room left for a big gain on the first day.
This is why the key question after a hot August is simple: can IPO investors expect the same kind of gains again, or will high valuations make that much harder?
August Was a Big Month for IPO Investors
August 2026 stood out in India’s primary market. According to Trendlyne data, 19 mainboard stocks listed in August. All 19 opened above their issue price. The average gain at the open was 26.1%.
The numbers were also strong at the end of the first trading day. Seventeen of the 19 stocks closed above their issue price, while two closed below it. The average gain at the end of the first day was 26.5%.
This is a very high number. It shows how strong demand was for new shares during the month.
Business Standard reported that 18 mainboard IPOs raised ₹28,976 crore in August. Together, these companies had a market value of ₹2.48 lakh crore, or about 8.6 times the capital they raised.
The gains were not limited to a few small moves. Some stocks gave very large returns on debut. Tempsens Instruments, for example, had a listing gain of 111.33%. Behari Lal Engineering gained 60.95% on its debut.
Such returns can quickly change investor behaviour. A person who sees a stock rise 50% or 100% on the first day may start to view IPOs as an easy source of quick profit.
That can create more demand for the next issue.
September Has Already Shown a Different Picture
The first part of September offers a useful warning. The market has remained active, but the results have not been as uniform as they were in August.
Trendlyne data shows that 10 mainboard stocks had listed in September at the time of its latest data. Seven opened above their issue price, while three opened below it. The average gain at the open was 14.8%.
At the end of the first day, six stocks were in profit and four were in loss. The average gain at that point was 19.8%.
That is still a positive figure. But it is clearly below August’s 26.5% average gain at the end of the first day.
Recent price data also shows why investors need to look beyond the first session. Tempsens Instruments gained 111.33% on its debut, but its later price was about 17.41% below its issue price. Deepa Jewellers had a 24.86% debut gain, but its later price was about 23.47% below its issue price.
The lesson is important. A big debut does not always mean a lasting return.
High Demand Does Not Guarantee a Good Debut
One reason August was so strong was the huge demand for several issues.
Some IPOs received subscriptions many times higher than the shares offered. LAPPL Automotive, for example, received 344.31 times subscription in August. Poojaa Precision Engineering received 278.83 times subscription. MV Electrosystems received 200.66 times subscription.
But high subscription alone cannot tell investors what will happen after the shares reach the market.
Demand can come from several types of buyers. Some investors may want to hold the company for years. Others may only want a short-term profit. If many short-term buyers sell soon after the debut, the share price can fall even after a strong first session.
This is why an IPO should not be judged only by its subscription number.
Valuation Is Now More Important
The price at which a company enters the market matters a great deal.
Suppose a company has strong demand but comes at a very high valuation. Investors may already pay a large premium before the shares start trading. In that case, the stock needs even stronger future earnings to justify the price.
On the other hand, if the issue price leaves some room compared with similar listed companies, investors may have a better cushion if market sentiment changes.
This issue has become more important as India’s IPO market has grown. A Grant Thornton Bharat report cited by Business Standard said India’s IPO market raised a record ₹1.9 trillion in FY26. Mainboard IPOs alone raised about ₹1.77 trillion.
The report also said investors had become more selective about valuations, governance, earnings quality and cash flow.
That suggests the market is not simply chasing every new company. Investors are starting to pay more attention to what they receive for the price.
NSE IPO Shows the Shift in Valuation
The upcoming National Stock Exchange IPO offers a clear example of this change.
NSE has set its IPO price at ₹1,700 to ₹1,785 per share. At that range, the exchange has a valuation of about $46 billion. Reuters reported that this is 15% to 20% below the valuation sought during earlier pre-IPO roadshows and about 40% below private market estimates from 2024.
The difference is important.
A company does not need to sell its shares at the highest possible price. A lower IPO price can leave some value for public investors and may make the issue more attractive.
NSE’s management has also said that the price was set after talks with investors and that some value was deliberately left for retail buyers.
At the same time, NSE faces concerns about its derivatives business. Derivatives trading volumes have fallen 27% from their 2024 peak. NSE’s FY2026 revenue fell 3.1%, while profit fell 15.5%.
This shows how valuation and business performance must be viewed together.
A Busy IPO Pipeline Can Change the Mood
Another factor is the number of new issues in the market.
India has a large IPO pipeline, and fresh offers compete for the same pool of investor money. Reuters reported that 27 mainboard IPOs raised ₹225.72 billion, or $2.36 billion, in the first half of 2026. A strong pipeline then added more pressure on available capital.
When only a few attractive IPOs are available, investors may put more money into each one. When many issues arrive close together, buyers have more choices.
That can make it harder for every company to command a very high premium.
The current pipeline already shows a wide range of demand. For example, Kanohar Electricals had total subscription of 90.59 times, while Manipal Payment and Identity Solutions had total subscription of 0.67 times in the latest available data.
The gap shows that investors are not treating every new issue in the same way.
Can August’s Gains Repeat?
The answer may depend less on the overall IPO market and more on the price of each individual company.
August showed that strong IPO returns are possible. But September has already shown more mixed results. The difference suggests that investors should not use August’s 26.5% average first-day gain as a normal target for every new issue.
The market can remain strong while individual IPOs produce very different results.
A company with solid earnings, a clear growth path and a reasonable valuation may still attract strong demand. Another company with a high price and weak earnings visibility may struggle, even if the wider IPO market remains active.
For investors, the focus therefore needs to move beyond the question of whether an IPO will list at a premium.
The more useful question is whether the issue price gives enough room for the company’s future business growth.
The Real Test Comes After the Debut
The first trading day gets most of the attention because the gain is easy to see. But the longer-term price tells a more useful story.
August gave investors an average 26.5% gain at the end of the first trading day across 19 mainboard stocks. Yet individual stocks later showed very different results. Tempsens Instruments is a clear example: its 111.33% debut gain did not remain intact, and its later price stood about 17.41% below the issue price.
This does not mean August’s IPO boom was false. It simply shows that a debut premium and a lasting investment return are two different things.
After a very strong month, expectations can rise quickly. Valuations can also rise with them. That makes careful price checks even more important.
The IPO market may remain active, but the era of easy and uniform debut gains may prove harder to sustain. August gave investors a powerful reminder of what can happen when demand is strong. September is already showing why those results should not be treated as a guarantee.
For the next phase of India’s IPO market, valuation, earnings quality and the actual strength of each business may matter more than the excitement around the next big issue.
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