NSE vs BSE: Key Differences Before the NSE IPO

Background of NSE and BSE

BSE has been around since 1875. That makes it one of the oldest exchanges in Asia, not just in India. It listed itself as a company several years ago and now trades on NSE under the ticker BSE.

NSE came into existence in 1992. For almost all of that time, it has stayed unlisted. There was an attempt to go public back in 2016, when draft offer documents were first filed with SEBI. That process did not move forward.

SEBI held back approval because of governance concerns and the co-location controversy; a situation where certain brokers were found to have allegedly received faster access to the exchange's trading infrastructure than others. The case lingered for years and went through multiple legal rounds. Things shifted in January 2024 when the Securities Appellate Tribunal set aside SEBI's disgorgement order against NSE. The exchange filed a settlement application in June 2025, offering ₹1,387.39 crore to close out the co-location and dark fibre cases. It was the largest settlement plea ever placed before the markets regulator. SEBI issued its No-Objection Certificate on February 6, 2026, and the NSE board approved the IPO shortly after.

How is the NSE IPO Structured?

This will not be a fresh issue. The IPO is structured entirely as an Offer for Sale (OFS), which means NSE raises nothing from this transaction, no new shares are created, and no capital comes into the exchange. What happens instead is that existing shareholders sell a slice of what they already own. The dilution is estimated to be roughly 4 - 4.5% of total equity, and the entire proceeds go to those selling shareholders.

In terms of size, the issue is expected to land somewhere between ₹22,000 crore to ₹23,000 crore. NSE's unlisted shares were trading above ₹2,000 as of June 16, 2026, suggesting the market is already pricing the exchange at well around ₹5 lakh crore. LIC is the single largest shareholder with a 10.72% stake. SBI and its subsidiary SBI Capital Markets, taken together, hold close to 7.5%.

Market Share of NSE and BSE

The difference in scale between NSE and BSE is hard to overstate. As of 2025, NSE's share of equity derivatives volume runs between 93% and 98%. That figure is what has led to it being described as the world's largest derivatives exchange by volume. In the cash equity segment, it holds 85% to 90% of overall market share. On most trading days, the vast majority of Indian equity activity,  whether it originates from a retail investor, a mutual fund house, or a foreign portfolio investor, is being executed on NSE.

BSE has been trying to chip away at NSE's lead in derivatives, and to some extent it did make gains in 2024. That changed in September 2025 when both exchanges restructured their expiry schedules. NSE moved its Nifty expiry from Thursday to Tuesday; BSE responded by shifting its Sensex expiry to Thursday. The net effect was that NSE's expiry day now precedes BSE's, which largely undid the competitive edge BSE had built. 

As of April 2026, NSE's share of options premium turnover stood at around 66%, compared with BSE’s 34%. While BSE at approximately 55% of notional F&O turnover with NSE’s share declined to 44.6% from 56.4%.

BSE's FY26 Financial Performance

FY26 was a strong year for the exchange. Consolidated net profit rose 88% on an annual basis to ₹2,487.25 crore, while revenue from operations grew 63%. The fourth quarter was particularly sharp, Q4 FY26 revenue came in at ₹1,563 crore, up around 85% from ₹846 crore in Q4 FY25, and consolidated net profit grew 61% YoY to ₹797 crore. Transaction charges, which make up the largest share of exchange revenues, rose 114% YoY in Q4. The average daily notional turnover in equity derivatives reached ₹245 trillion during the quarter, up from ₹112 trillion in the year ago period. The board declared a final dividend of ₹10 per share for FY26.

NSE's FY26 Financial Performance

NSE's quarterly trajectory in FY26 showed improvement even as the full-year numbers came under pressure. In Q4 FY26, total income rose 22% both sequentially and on a YoY basis to ₹5,360 crore, supported by an increase in trading activity. Revenue from operations grew 27% QoQ and 32% YoY. Operating EBITDA came in at ₹3,633 crore, up 27% QoQ and 30% YoY, with margins holding steady at 73%. PAT for the quarter rose 19% QoQ and 8% YoY to ₹2,871 crore.

The annual picture was under pressure. Total income declined 2% on an annual basis to ₹18,713 crore in FY26, while EBITDA fell 12% to ₹11,098 crore. PAT for the full year came in at ₹10,302 crore, down 15% from FY25. The divergence between a strong Q4 and a weaker full year reflects the uneven trading environment through much of FY26, with volumes recovering more clearly in the latter part of the year.

Conclusion

A listing before December 2026, if the timeline holds, would put NSE's IPO in the same bracket as some of the largest public offerings the country has ever seen. The primary market went through a slower phase in the first half of 2026  after a particularly strong 2025  with mainboard activity subdued and most new issuances coming from the SME segment. An offering of ₹22,000–23,000 crore from an institution of NSE's standing could shift that mood fairly quickly.

Beyond the money, there is something structurally important about this listing. NSE has spent most of its life outside the public disclosure framework. It has not had to file quarterly results, disclose related-party transactions in the way listed companies do, or maintain the kind of continuous regulatory compliance that public listing demands. All of that changes once it lists. The exchange will be subject to the same reporting obligations BSE already follows. For an institution that sits at the centre of India's financial infrastructure, that level of accountability is not a small thing.