If you have been anywhere near an Indian trading terminal in 2026, you already know it has been a brutal year for technology stocks. We covered the day Nifty IT fell 3.65 percent after Accenture slashed its revenue guidance, and that single session was really just one chapter in a much longer story. The Nifty IT index itself is down over 22 percent on a one year basis as of the latest NSE data, making it one of the worst performing major sectoral indices on the exchange right now.

But most retail investors who track this decline only ever look at the overall sector weightage inside Nifty 50, without actually understanding the dedicated Nifty IT index that trades and moves separately. If you already know how the broader Nifty 50 sector split works, this piece zooms in specifically on the IT sectoral index, its composition, how weight is assigned, and what is actually driving the pain, along with where the growth story still genuinely holds up.

What Exactly Is the Nifty IT Index

The Nifty IT index is a sectoral benchmark maintained by NSE Indices that tracks the ten largest and most liquid Information Technology companies listed on the exchange. Unlike Nifty 50, where the constituent count and sector mix can shift, Nifty IT is deliberately fixed at ten stocks. It was launched with a base date of January 1, 1996, and like the broader indices we covered in our guide on how Nifty 50 is calculated, it uses the free float market capitalisation method, meaning only publicly tradable shares count toward a company's weight.

There is one meaningful difference worth flagging. Nifty IT applies a periodic capped free float methodology, which means no single stock can carry more than 33 percent weight, and the top three stocks combined cannot exceed 62 percent at the time of rebalancing. This cap exists specifically to stop the index from becoming a one or two stock show, something that free float weighting alone would otherwise allow.

The Nifty IT Composition and Weightage Table

Here is the exact constituent breakdown, based on NSE Indices' own official Nifty IT factsheet.

Company	Weight in Nifty IT	Primary Business
Infosys Ltd.	27.08%	IT services and consulting
Tata Consultancy Services Ltd.	19.71%	IT services and consulting
Tech Mahindra Ltd.	11.45%	IT services, telecom-focused
HCL Technologies Ltd.	10.68%	IT services and products
Wipro Ltd.	7.09%	IT services and consulting
Persistent Systems Ltd.	6.87%	Digital engineering and product development
Coforge Ltd.	6.01%	IT services, BFSI and travel focused
LTIMindtree Ltd.	4.58%	IT services and consulting
MphasiS Ltd.	3.65%	IT services, BFSI focused
Oracle Financial Services Software Ltd.	2.88%	Banking and financial software products

Source: NSE Indices official Nifty IT factsheet.

Together, Infosys, TCS and Tech Mahindra make up just over 58 percent of the index, comfortably inside the 62 percent cap but still concentrated enough that a bad quarter from any one of these three names moves the whole index meaningfully.

Why Infosys Outranks TCS Despite Being the Smaller Company

Here is something that surprises a lot of investors the first time they see this table. By full market capitalisation, TCS is a considerably larger company than Infosys. Yet Infosys carries almost 7 percentage points more weight in the Nifty IT index. The answer comes down to free float, not size.

Tata Sons holds a very large promoter stake in TCS, which means a smaller portion of its shares are actually available for public trading. Infosys, on the other hand, has a much lower promoter holding, so a bigger slice of its total market value counts toward its free float market cap. This is the same free float logic explained in our piece on Nifty 50's free float market cap methodology, and it is a good reminder that index weight reflects tradable float, not the size of the underlying business.

How Much Does IT Still Move Nifty 50

It is worth remembering that Nifty IT was not always a secondary story. In the years right after the dot com boom, technology names carried a far heavier share of Nifty 50 than they do now. Today, Information Technology sits at just over 7 percent of Nifty 50's overall weight, a fraction we broke down in detail in our Nifty 50 sector weightage guide, and a level that has been steadily compressed as Financial Services has pulled further ahead. That shrinking weight means a bad quarter for Infosys or TCS no longer single handedly drags the broader index the way it might have a decade ago, even though it still moves Nifty IT itself violently.

This is not a new story either. During the dot com boom of 2000 and 2001, technology stocks briefly commanded a weight in Nifty 50 that would look almost unrecognisable today, before crashing hard when the bubble burst. Our detailed history of Nifty 50 traces how dramatically the index's sector mix has reshuffled since 1996, and IT's rise, fall, partial recovery and current slide are one of the clearest examples of how no sector holds its position in Indian markets forever.

Key Drivers Behind Nifty IT's Performance

A handful of factors decide whether this index has a good quarter or a painful one, and most of them originate outside India entirely.

US and European enterprise technology budgets sit right at the top of that list. Roughly half the revenue of the big Indian IT names comes from North America, so when American corporations tighten discretionary tech spending, order books at Infosys, TCS, HCL Tech and Wipro feel it within a quarter or two. The Accenture guidance cut that triggered the June selloff we detailed in our IT slump coverage was exactly this kind of signal, a bellwether flashing a warning about enterprise spending well before Indian companies confirmed it themselves.

Currency movement matters more here than in almost any other Nifty sector. A weaker rupee against the dollar is generally good news for IT exporters since their revenue is dollar denominated while a large part of their cost base is in rupees, so INR depreciation tends to support margins even when growth is soft.

Deal pipeline and total contract value announcements move individual stocks sharply on results day, since they are the clearest forward indicator of revenue for the next several quarters. And increasingly, the market is trying to price in how generative AI tools might compress the billable hours model that Indian IT services has relied on for two decades, a structural question that neither analysts nor company managements have fully answered yet.

Not Just a Downturn Story

It would be unfair to paint Nifty IT purely as a sector in decline. AI adoption, cloud migration and rising cybersecurity spending are all long term secular themes that Indian IT companies are positioning around, even while near term guidance stays cautious, a more optimistic framing we explored in our piece on whether IT stocks are worth buying in 2026. The smaller names further down this table, Persistent Systems and Coforge in particular, have leaned harder into these newer themes and have generally held up better than the larger legacy players during this downturn.

Rebalancing and How the Composition Changes

Like every major NSE Indices product, Nifty IT is reconstituted semi annually, with cut off dates of January 31 and July 31 each year, using average data from the preceding six months. Eligible companies must be part of the Nifty 500 universe, belong to the IT sector, and meet minimum trading frequency and listing history requirements, with preference given to stocks already trading in the F&O segment. A four week notice period is given to the market before any change takes effect, so shifts in this table do not happen overnight or without warning.

What This Means If You Invest or Trade

For long term investors, several mutual funds and ETFs track the Nifty IT index directly, offering a low cost way to take a pure sector bet without picking individual IT stocks yourself. Given the current drawdown, some investors view this as a contrarian entry opportunity, while others prefer to wait for clearer signs that US enterprise spending is recovering before adding exposure. Neither approach is automatically right, and the answer depends heavily on your own time horizon and conviction, something worth thinking through using the same framework covered in our guide on active versus passive investing in India.

For traders, Nifty IT futures and options let you express a sector specific view without the noise of banking, energy or auto news bleeding into your position, which is exactly what makes sectoral indices useful hedging and speculation tools in the first place. Given the 33 percent single stock cap, though, remember that Nifty IT will never behave like a leveraged bet purely on Infosys or TCS individually, even when one of them is driving most of the headlines that week. It is also worth watching implied volatility around large earnings weeks, since a poor showing from Infosys or TCS in isolation can still swing the whole index sharply given their combined near 47 percent share.

The Bottom Line

Nifty IT is a tightly constructed, ten stock index dominated by three names, shaped as much by free float mechanics as by business fundamentals, and currently going through one of its toughest stretches in years. Understanding its composition and the caps that govern it gives you a much sharper read on why the index moves the way it does, rather than just watching the headline number swing without knowing what is actually underneath it.

Disclaimer: This article is for educational and informational purposes only and should not be construed as investment advice or a recommendation to buy, sell or hold any security. Index composition and weightage figures are sourced from NSE Indices and are subject to change with each semi-annual rebalancing. Please verify the latest figures on the official NSE Indices website before making investment decisions, and consult a SEBI-registered investment advisor to understand what is suitable for your own financial situation.

Frequently Asked Questions (FAQ)

1. What is the Nifty IT index?

The Nifty IT index is a sectoral benchmark maintained by NSE Indices that tracks the performance of the ten largest and most liquid Information Technology companies listed on the National Stock Exchange.

2. How many companies are in the Nifty IT index?

The Nifty IT index has a fixed count of ten constituent companies, unlike broader indices where the number of stocks in a sector can vary over time.

3. Which stock has the highest weight in Nifty IT?

Infosys Ltd. currently holds the highest weight in the Nifty IT index at around 27 percent, ahead of Tata Consultancy Services, due to its higher free float compared to TCS.

4. Why has Nifty IT underperformed in 2026?

Weak US and European enterprise technology spending, cautious hiring by global clients, and guidance cuts from IT bellwethers like Accenture have driven the Nifty IT index down sharply over the past year.

5. Can retail investors invest directly in the Nifty IT index?

Yes, several mutual funds and ETFs in India track the Nifty IT index, allowing investors to gain exposure to the sector without picking individual IT stocks.

6. How often is the Nifty IT index rebalanced?

The Nifty IT index is rebalanced semi-annually, with cut-off dates of January 31 and July 31 each year, based on average data from the preceding six months.