IEX shares tumble 10% as market coupling rattles investors

IEX investors woke up to a power cut this morning—not in the grid, but in their portfolios.

Shares of Indian Energy Exchange (IEX) nosedived nearly 10 per cent to Rs 169.10, hitting the lower circuit in early trade on Thursday (July 24, 2025). The selloff came minutes after the Central Electricity Regulatory Commission (CERC) approved a plan to ‘couple’ the country's power markets—potentially disrupting IEX’s dominance.

Why the panic?

Two words: market coupling.

This regulatory move will create a unified platform for day-ahead electricity trades across all exchanges. In theory, it’s meant to improve price discovery. In reality, it could squeeze IEX’s market share—and by extension, its fat margins.

Investors aren’t thrilled.

IEX currently commands over 90 per cent share in short-term power trading. If that pie is now being served across the table, it’s only natural that the market is bracing for thinner slices.

The bigger picture

This hit comes just days before IEX is set to report its Q1 FY26 results. Ironically, business momentum has been strong:

• Power volumes for Q1 rose 15 per cent year-on-year
• REC (Renewable Energy Certificate) trading volumes surged 149 per cent
• But average electricity prices dropped 28 per cent YoY, which may pinch revenue growth

So, even as the operational metrics shine, regulatory clouds have cast a long shadow.

What should investors make of this?

This isn’t just about a bad day on the bourses—it’s a structural shift.

For long-term investors, the real question is: Can IEX still maintain its market share?

Yes, the fundamentals are solid. Yes, power demand in India is increasing. However, if revenue visibility weakens due to regulatory intervention, the growth premium attached to IEX could shrink.

Moreover, with regulators now rearranging the power play, it’ll need to fight harder to keep its leadership current flowing.

Quick check: IEX by the numbers

Value Research Online ratings

• Overall: 5/5
• Quality: 10/10
• Growth: 7/10
• Valuation: 4/10
• Momentum: 8/10

Should iEX be a part of your portfolio?

Had you purchased shares of IEX worth Rs 10,000 around five years ago, they would have been valued at nearly Rs 1.05 lakh today.

That said, these are short-term market movements and basing your investment decisions on short-term market movements can be risky. True wealth is built by staying invested for the long haul. Instead of reacting to a single quarter's results, invest with the aim of building wealth in the long term.

At Value Research Stock Advisor, our analysts cut through the noise to help you focus on what really matters – identifying long-term compounders such as IEX.

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Disclaimer: This article was crafted with the aid of artificial intelligence and meticulously reviewed and edited by our human experts to ensure accuracy and provide valuable insights. It's intended for informational purposes only. We encourage you to conduct your own thorough research before making any investment decisions.