India Is About 1.5% of Global Equity. Should It Be All of an Indian Portfolio?

Indian households use global products every day, from smartphones to software built by companies such as Apple, Microsoft and Alphabet¹.

Their wealth, however, stays largely at home, concentrated in real estate and gold ² and, increasingly, in Indian equities: the National Stock Exchange had 13.5 crore unique registered investors as of August 2026³.

But these holdings share common drivers: one economy, one interest rate cycle and one currency.

So, when that economy slows, some of these assets can come under pressure at the same time, leaving little in the portfolio to offset the decline.

The question, then, is whether a single market, however promising, should account for all of an investor's long-term wealth?

Answering it begins with a simple measure: how much of the world's equity market India actually represents.

India's share of global equity

At the end of August 2026, the MSCI India IMI, which covers large, mid and small-cap Indian companies, had a market capitalisation of about $1.75 trillion⁴.

At the end of September 2026, the MSCI ACWI IMI, or the All Country World Index, which spans developed and emerging markets, stood at about $114.75 trillion⁵.

Basis this, India represents roughly 1.5% of global investable equity.

The two indices also differ in composition. Five of the ten largest constituents of the MSCI India IMI⁶ were banks or financial companies.

In the MSCI ACWI IMI, eight of the nine largest companies were US technology firms, including NVIDIA, Apple and Microsoft⁷.

The UBS Global Investment Returns Yearbook 2025 reports that the US presently accounts for 64% of world market capitalisation⁸, largely due to the outperformance of its major technology stocks.

An India-only portfolio therefore has limited exposure to sectors that weigh significantly in global markets.

Why correlation matters

Diversification depends less on how many investments a portfolio holds than on whether those investments rise and fall at different times.

Correlation measures this on a scale where 1 means two assets move together exactly and 0 means they move independently.

S&P Dow Jones Indices has observed that most Indian mutual funds have a correlation above 90% with one another⁹, which suggests that adding another domestic fund to a portfolio may add limited diversification.

It has also observed that Indian and US equities have shown lower correlation, and that combining them has historically been associated with lower portfolio volatility.

Currency as a second source of return

A dollar-denominated asset gives an Indian investor two sources of return: the performance of the investment and the movement of the rupee against the dollar.

After the devaluation of June 1966, the official rate was ₹7.50 per dollar¹⁰. At the end of June 2026, the FBIL reference rate was about ₹94.67¹¹. This implies average depreciation of roughly 4.3% a year over six decades.

This is particularly relevant for goals priced in foreign currency, such as overseas education or international travel, whose rupee cost rises as the currency weakens.

Risk-adjusted returns

The case for global allocation is often framed around which market will deliver higher returns. Market leadership, however, has shifted over time: UBS notes that the global equity market of 1900 was relatively balanced¹², whereas the US now dominates.

A more useful measure is risk-adjusted return: how much an investment earns for the ups and downs an investor has to sit through.

Over the ten years to August 2026, the MSCI India IMI swung more than the global MSCI ACWI IMI, with annual volatility of 19.58% against 14.95%¹³. It also earned less for that risk. Its Sharpe ratio, which measures return earned per unit of volatility, was 0.39, against 0.69 for the global index.

Put simply, over this period global equities delivered nearly twice as much return for each unit of risk taken.

Limitations

Global diversification does not entirely eliminate losses. During the global financial crisis of 2007-09, the MSCI ACWI IMI fell 58.59% from peak to trough, while the MSCI India IMI fell 74.17%¹⁴. Markets can decline together during periods of global stress.

Currency movements can also reduce returns over shorter periods, as the rupee does not depreciate in a straight line. With the US accounting for nearly two-thirds of global market capitalisation¹⁵, an allocation directed only to US equities may only end up replacing one concentration with another.

Costs also affect net outcomes, including fund expenses, remittance charges and tax collected at source on remittances above ₹10 lakh a year ¹⁶.

Implications for portfolio construction

The appropriate allocation depends on individual circumstances, including the currency of future goals, the capacity to hold through extended underperformance, and the total cost of the chosen route.

Indian investors can access global markets through domestic international funds, or invest directly abroad under the Liberalised Remittance Scheme, which permits up to $250,000 per financial year¹⁷. Investments in funds based in GIFT City¹⁸ are also made under this scheme and count towards the same annual limit. Each route carries different limits, costs and documentation requirements.

Conclusion

Investing globally is not a judgment against India's growth prospects. It recognises that a portfolio tied to a single economy, market and currency carries concentration risk, which a measured global allocation may potentially help to reduce.

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