A Shrinking Index Weight
Does Not Always Mean
Shrinking Earning Power.

If you only looked at a global index chart over the past year and a half, you would think India’s businesses had become less important to the emerging markets story. The weight has come down a lot, and it has come down fast. But an index weight measures something narrow. It tells you how much of a basket’s total market value sits in one country today. It does not tell you how much of that basket’s actual profit is being generated there. Those two numbers can move apart for a long time, and when they do, the gap itself becomes useful information for a patient investor.

This is not a small technical footnote. It touches a question every long-term equity investor eventually has to answer for themselves: should you follow where the index says the market’s attention currently sits, or should you follow where the underlying earnings are actually being produced? History has a fairly consistent answer, and it is not the one most headlines lead with.

The Setup

Why Index Weight and Earning Power Often Part Ways

A benchmark index like the MSCI Emerging Markets Index is built on free float market capitalisation. In plain terms, a country’s weight in the index goes up when its listed companies’ share prices rise relative to everyone else’s, and it goes down when they fall behind. That is a price-driven measure, not a profit-driven one. It reflects investor sentiment and capital flows in the here and now, filtered through whichever theme happens to be capturing global attention.

Earning power is a different animal altogether. It is the actual profit, revenue and cash flow a country’s listed companies generate, year after year, regardless of whether global investors are currently excited about them. A country’s businesses can keep growing profits steadily while its index weight falls, simply because money is chasing a different story elsewhere. That is close to what has been happening with India inside the MSCI Emerging Markets basket.

Source: MSCI Emerging Markets Index official factsheet, country weights as of June 30, 2026.

Over six quarters, India’s weight in the index has almost halved, from 19.4 percent to 11.1 percent, a fresh multi-year low. The bigger story is the ranking above it. China held the largest single country weight as recently as Q4 2024, at 27.8 percent. By June 2026, Taiwan had taken that position outright at 27.3 percent, and South Korea, the smallest of the four at just 9.0 percent when this period began, had overtaken China to move into second place at 23.7 percent. China now sits third, at 19.0 percent. The hierarchy has been rewritten in six quarters, driven almost entirely by global capital chasing semiconductor and artificial intelligence hardware names in Taiwan and Korea. None of these moves were primarily about a change in India’s underlying corporate profitability. They were about where global capital chose to chase a narrative.

The concentration this has produced is worth sitting with. On the latest factsheet, a single company, Taiwan Semiconductor Manufacturing, carries a weight of roughly 15 percent of the entire index, more than every listed Indian company in the index combined. Add Samsung Electronics and SK Hynix, and three semiconductor companies alone account for close to a third of the benchmark. That is a useful reminder of what an index weight actually captures. It is a statement about where global capital has concentrated its enthusiasm, not a scorecard of which economy is generating the most durable profit growth.

The Other Side of the Ledger

Why This Divergence Looks Overdone

There is a second, complementary way to look at this same gap, and it points in a more constructive direction for India specifically. Rather than tracking India’s index weight on its own, research from Morgan Stanley compares India’s share of the profit pool generated by companies in the MSCI All Country World Index against India’s share of that same index’s total weight. When the profit share sits meaningfully above the weight share, it implies India’s listed companies are contributing more to global corporate earnings than their market value currently reflects. On the most recent reading, that gap has widened to its highest level since 2009, a level last seen consistently in the years right after the global financial crisis, and well clear of the compressed readings of 2018 to 2021.

Two things stand out. The gap spiked sharply around 2009, in the aftermath of the global financial crisis, when India’s earnings held up relative to a global profit pool that had collapsed. It then settled into a plateau through 2013 to 2017, fell away through the 2018 to 2021 period alongside India’s own earnings slowdown, and has since climbed back to a level around where it stood in that earlier plateau. If earnings are the thing long-term equity returns eventually follow, a profit-to-weight gap this wide is arguably a more useful signal than a headline index-weight chart on its own, precisely because it captures the side of the equation, corporate earnings, that a price-based weight does not. None of this guarantees a particular outcome for index weight or for returns. But the size and direction of the current gap do suggest that the recent fall in India’s benchmark weight has run further than the earnings side of the ledger would justify, a rotation toward Taiwan and Korea’s AI-linked theme rather than fresh evidence of a slowdown in India’s own corporate profitability.

The Blind Spot

How Benchmark Indices Can Underrepresent Future Earnings Leaders

A market-cap weighted index, by construction, gives the most space to whatever is already large and already popular. That is a reasonable way to track the market as it exists. It is a poor way to spot what the market is about to become. Businesses and, at a country level, entire economies, often build their earnings base quietly, well before global capital notices and re-prices them into a larger index weight.

Three structural reasons explain why this blind spot exists. First, indices are reconstituted periodically, not continuously, so weight always reacts to a change in profitability and sentiment with a lag. Second, weighting by free float market value means a country’s weight can be pulled around by a handful of very large, richly valued companies in a hot sector, even if the broader economy’s earnings are growing at a completely different pace. Third, global capital allocation tends to move in themes. When a theme such as artificial intelligence hardware captures attention, capital rotates toward the countries seen as direct beneficiaries, and away from others, regardless of what is happening in those other countries’ underlying corporate results.

India’s own equity history carries a domestic version of the same lesson. Sectors such as private sector banking, specialty chemicals and diagnostics were a small part of headline market capitalisation for years before their earnings compounded to a point where index weight had to catch up. The pattern repeats at the country level today. A falling weight inside a global benchmark measures a change in relative popularity. It does not automatically measure a change in a country’s capacity to generate profit.

The Longer Lens

Why Earnings Growth, Not Index Weight, Drives Long-Term Returns

Over short periods, price and sentiment dominate. Over long periods, equity returns tend to track the growth in earnings that businesses actually deliver. This is a well understood relationship in equity markets globally. A country, sector or company can be temporarily out of favour and underweighted in a benchmark while its earnings keep compounding underneath the surface. When investor attention eventually returns, and it usually does when the earnings gap becomes too wide to ignore, the re-rating in weight and valuation tends to happen quickly, not gradually.

The same logic applies within a single market, not just across countries. A stock or a sector with a small index weight today, but genuine and improving earnings growth, is not a mistake in the index. It is closer to a preview of where that index’s weight is headed, once enough investors do the work of connecting profit growth to price. The investor who waits for the index weight to confirm the story before acting is, by definition, buying in after a large part of the re-rating has already happened.

Looking Back to Look Forward

A Pattern That Has Shown Up Before

This is not the first time a fast-growing economy’s index weight has lagged its earnings story. Export-driven Asian economies have gone through repeated cycles where global capital rotated toward whichever theme was dominant at the time, be it commodities, financial liberalisation, manufacturing or, more recently, semiconductors and artificial intelligence infrastructure. In each cycle, countries left out of the prevailing theme saw their index weight compress even while their own corporate earnings kept growing at a healthy pace. In most of these episodes, the weight eventually adjusted toward the earnings trend once the theme rotated again, though the timing and scale of that adjustment varied and is never guaranteed to repeat in the same way.

India’s current position fits this broader pattern. The rotation of global capital toward Taiwan and South Korea reflects genuine strength in the semiconductor and artificial intelligence hardware theme, and that strength is real. It does not, on its own, tell us that India’s corporate earnings trajectory has weakened to the same extent that its index weight has fallen. Those are two different claims, and it is worth being careful not to collapse them into one.

Closing Thought

Weight Follows Earnings, Eventually

Markets spend a lot of time debating what an index chart is telling us about a country’s importance. Over a long enough horizon, the more useful chart is usually the quieter one, the one tracking actual profit growth rather than current market attention. India’s profit share within its regional peer set has stayed considerably firmer than its recent fall in index weight suggests. That kind of gap does not guarantee a particular outcome or a particular return, and no one should treat it as one. What it does offer is a reminder worth carrying into any long-term equity allocation decision. Index weight is a photograph of where capital is looking today. Earnings power is closer to a forecast of where that capital eventually has to go.