NSE IPO Opens Today: GMP Falls 43% — What Investors Should Know
The much-awaited NSE IPO has opened for subscription today, September 17, but investor attention is increasingly shifting from the excitement around India's largest stock exchange to a more important question: does the IPO price adequately reflect NSE's growth potential and risks?
The grey market premium (GMP) has cooled sharply ahead of the issue. The latest reported GMP was ₹125 per share, down from ₹218 on September 11 — a fall of about 43%. At the upper IPO price of ₹1,785, that GMP implies an indicative grey-market price of around ₹1,910, or roughly a 7% premium. GMP, however, is unofficial and does not guarantee the actual listing price.
The IPO comes with a price band of ₹1,700–₹1,785 per share, an eight-share lot and a minimum retail investment of ₹14,280 at the upper end. The issue closes on September 21, with listing tentatively scheduled for September 24 on BSE.
For investors, the NSE IPO presents a fairly unusual combination: a dominant financial-market franchise, very high profitability and strong market share, but also meaningful exposure to derivatives activity, regulation and changing trading behaviour.
NSE IPO: Key Details
The public issue is worth approximately ₹22,568.94 crore at the upper price band and consists entirely of an Offer for Sale (OFS) of 12.64 crore existing equity shares.
That distinction matters.
In an OFS, the company does not receive the money raised from investors. Instead, the proceeds go to the existing shareholders selling their shares. Therefore, NSE is not raising fresh capital through this IPO to expand its business or fund new projects.
The issue has been divided among investor categories, with 50% reserved for qualified institutional buyers, 15% for non-institutional investors and 35% for retail investors. NSE has also already completed its anchor allocation, raising ₹6,746.18 crore through institutional investors at ₹1,785 per share.
NSE's own investor-relations website has published the Red Herring Prospectus and other official offer documents, making those documents the primary source for investors assessing the issue.
Why the NSE IPO Is Getting So Much Attention
NSE is not a conventional company entering a crowded industry.
It operates critical market infrastructure and has maintained a dominant position across several segments of India's capital markets. Data cited in IPO research show that NSE had about 93% share of India's cash market and 99.79% of equity futures in FY26, while its equity-options market share by premium turnover was about 74.71%.
As of June 30, 2026, NSE had more than 261 million registered investor accounts and 132 million unique registered investors, according to figures cited in an IPO note. Its ecosystem includes trading, clearing, settlement, indices, market data and related financial-market services.
This creates a powerful network effect. More investors and brokers can attract more trading activity, while high trading liquidity can make the exchange more attractive to additional market participants.
That position is one of the main arguments investors need to consider when evaluating the IPO.
The Biggest Concern: NSE's Dependence on Trading Activity
NSE's market leadership is also linked to its biggest investment risk.
A large portion of its revenue comes from transaction charges. According to IPO analysis cited by NDTV Profit, around 79% of NSE's revenue comes from transaction charges, leaving earnings sensitive to market volumes and changes in trading activity.
The derivatives segment is particularly important.
Reuters reported that around 80% of NSE's revenue comes from trading, with options accounting for about 60% of revenue, while options volumes have fallen from their 2024 peak following regulatory changes.
This creates a clear trade-off.
High derivatives activity has helped NSE generate exceptional profitability, but regulatory changes affecting options trading can also have a direct effect on its earnings.
For investors, the crucial issue is therefore not simply whether derivatives remain large, but whether NSE can continue growing earnings while India's derivatives market evolves.
FY26 Profit Declined — But the Latest Quarter Improved
NSE's financial numbers add another layer to the IPO debate.
Revenue from operations fell from ₹17,140.68 crore in FY25 to ₹16,601.31 crore in FY26. Profit after tax declined from ₹12,187.69 crore to ₹10,302.06 crore, while operating EBITDA dropped from ₹12,646.88 crore to ₹11,097.90 crore. EBITDA margin also declined from 73.78% to 66.85%.
These numbers show that the recent regulatory changes and moderation in trading activity have already affected financial performance.
However, the most recent quarter provides a somewhat different picture.
In Q1 FY27, revenue from operations increased 13.1% year on year to ₹4,560.41 crore, while operating EBITDA rose 14.84% to ₹3,594.25 crore. Profit after tax increased 6.71% to ₹3,120.08 crore.
That improvement is important, but one quarter is not enough to establish a long-term trend.
Is the NSE IPO Valuation Expensive?
Valuation is likely to be one of the most debated aspects of the issue.
At ₹1,785 per share, NSE's valuation is estimated at more than ₹4.4 lakh crore. NDTV Profit cited an FY26 P/E of around 42.9 times at the upper price band, while Reuters reported estimates of roughly 35–38 times forward earnings depending on the forecast period used.
BSE is the most obvious Indian listed comparison, although the two exchanges differ considerably in scale and business mix.
Some brokerage research views NSE's valuation as reasonable relative to its market dominance and profitability. Other analysis has highlighted that investors are still paying a substantial multiple while the exchange faces regulatory uncertainty and slower derivatives growth.
The important point is that valuation depends heavily on future earnings. A lower P/E than a peer does not automatically mean a stock is cheap, just as a higher multiple does not automatically make it expensive. Investors need to consider expected growth, margins, regulatory risk and the durability of the company's competitive advantage.
What Does the 43% GMP Fall Really Mean?
The decline in GMP is certainly worth noticing.
NSE's GMP reportedly stood at ₹218 on September 11. It then moved through ₹208, ₹210, ₹208, ₹160 and ₹145 before reaching ₹125 on September 17. That represents a ₹93 decline, or approximately 43%, in less than a week.
But investors should be careful about treating this as a direct signal to accept or reject the IPO.
Grey-market trading is unofficial, and GMP can change rapidly based on sentiment, liquidity and expectations. It does not represent the company's intrinsic value and does not guarantee the eventual listing price.
The falling GMP may instead be interpreted as evidence that short-term expectations for listing gains have become less aggressive.
That distinction is important for someone considering the IPO primarily for a quick listing gain.
Should You Subscribe to the NSE IPO?
There is no single answer that applies to every investor. The decision depends on the investor's objective, valuation comfort, risk tolerance and time horizon.
For investors considering the issue, the main factors can be grouped into two sides.
Factors Supporting the Investment Case
NSE has:
A dominant position in India's capital markets
Strong network effects and high trading liquidity
Very high operating margins
A diversified market-infrastructure ecosystem
Exposure to India's long-term financialisation trend
Significant scale in cash and derivatives markets
The company has also been expanding into areas such as electricity futures, electronic gold receipts, natural-gas futures and the national coal exchange, which could help diversify revenue over time.
Risks Investors Need to Weigh
The major risks include:
Dependence on transaction-based revenue
Regulatory changes affecting derivatives
Lower options-trading volumes
High expectations embedded in the valuation
Cybersecurity and technology risks
Revenue concentration among large trading members
The fact that the IPO is entirely an OFS
NSE's future earnings could therefore be influenced significantly by changes in trading behaviour and market regulation.
NSE IPO: Listing Gain vs Long-Term Investment
The answer can look different depending on the investment horizon.
Someone applying mainly for a listing gain should pay attention to GMP trends, subscription demand and broader market sentiment, while recognising that none of these guarantees the listing price.
A long-term investor, meanwhile, needs to focus much more on NSE's earnings trajectory, derivatives volumes, regulatory developments, market share, diversification and valuation.
The 43% GMP decline makes the short-term picture less certain than it appeared a week earlier. At the same time, it does not by itself change the underlying business fundamentals of NSE.
That is why the IPO should be assessed on the company's financial performance and valuation rather than the GMP alone.
What Investors Should Watch After the IPO
Once NSE becomes listed, several indicators could become particularly important:
Equity and derivatives trading volumes
Transaction revenue growth
Options-market activity
Regulatory changes
Operating margins
Revenue diversification
Market share
Valuation relative to earnings
The most important question will be whether NSE can maintain its exceptional market position while reducing its sensitivity to regulatory changes in the derivatives segment.
Bottom Line
The NSE IPO opens on September 17 with a ₹1,700–₹1,785 price band, while its grey-market premium has fallen about 43% from ₹218 on September 11 to ₹125. At the current GMP, the implied grey-market price is around ₹1,910, but this is only an unofficial indication and should not be treated as a guaranteed listing outcome.
The investment case rests on NSE's extraordinary market position, profitability and long-term exposure to India's expanding capital markets. Against that, investors must weigh the FY26 earnings decline, derivatives dependence, regulatory uncertainty and the valuation being asked.
For anyone considering the NSE IPO, the key question is not simply “What is the GMP?” but “Am I comfortable paying the IPO valuation for NSE's future earnings, while accepting the risks surrounding trading volumes and regulation?”
The answer will depend on individual investment objectives and risk tolerance.
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This article is for informational and educational purposes only and should not be considered investment advice.