Is Your International Diversification Really Just 5 US Tech Stocks?

A Three-Fund Example

Here is a simple, hypothetical portfolio that many people would call "globally diversified": 40% in a Nasdaq-100 fund, 30% in an S&P 500 fund and 30% in a world index fund. The table shows how much each of five giant US companies weighs in each index, and what you would hold of each in total.

Illustration only, not a recommendation. Nasdaq-100 and S&P 500 weights are from SlickCharts (viewed 16 Oct 2026); MSCI ACWI weights are from the MSCI factsheet (30 Sep 2026). The dates differ, and a real fund can differ slightly from its index.

Three funds, three fund houses and three expense ratios, but about 35% of the combined portfolio sits in the same five companies. Nothing is wrong with owning NVIDIA, Apple, Microsoft, Amazon or Alphabet. The problem is thinking three funds gave you three different bets.

Why Every Index Holds the Same Giants

All three indices weight companies by market value, so the biggest companies get the biggest slices everywhere. In the MSCI ACWI, the ten biggest companies make up 25.40% of the whole index, and nine of the ten are American: NVIDIA 5.11%, Apple 4.76%, Microsoft 3.52%, Amazon 2.35%, Alphabet class A 1.97%, TSMC 1.87%, Alphabet class C 1.55%, Meta 1.55%, Broadcom 1.55% and Micron 1.17%. The United States is 64.21% of MSCI ACWI, so a "world" fund is mostly one country.

What Our Refreshed Data Shows

In October 2026 we rebuilt our international fund data from the funds' own disclosures. We compared 12 Indian international funds on their latest disclosed top holdings, so every figure below is a minimum, not an exact overlap.

Computed by OverlapIQ from holdings disclosed between 30 Jun and 16 Oct 2026; dates differ by fund. Open the international sample in the analyzer to see the full matrix.

Active global funds are not immune. ABSL International Equity Fund's biggest holdings at 30 September 2026 were NVIDIA 4.79%, Alphabet 4.31% and Microsoft 2.93%. PGIM India Global Equity Opportunities, through its underlying fund (29 June 2026), held TSMC 7.09%, Alphabet 6.93% and Lam Research 5.26% at the top, and it still overlaps a Nasdaq tracker by at least 24%.

Where Real Variety Comes From

Spreading across regions changes the picture, because other markets are less top-heavy and hold different companies:

• Developed markets outside the US. MSCI EAFE's ten biggest companies are only 14.20% of the index (ASML 3.28%, HSBC 1.59%, Roche 1.37%, Shell 1.28%, Novartis 1.22%), and Japan is 24.87% of it.
• Japan and Taiwan funds. In our data, Nippon India Japan Equity Fund (top 20 holdings, 30 Sep 2026) and Nippon India Taiwan Equity Fund (top 10, 31 Jul 2026) share no disclosed top holdings with the Nasdaq-100 tracker. The Taiwan fund's top holding was MediaTek at 7.34%, and TSMC was not in its top 10.
• Emerging markets. MSCI Emerging Markets is 28.94% Taiwan, 21.40% South Korea, 19.80% China and 10.65% India. Note that information technology is 43.78% of it and TSMC is its largest holding at 15.63%, so it is not free of the same chip theme, and its India weight overlaps your Indian funds.

How to Check Your Own Portfolio

1. List everything with foreign exposure: international funds, index funds, flexi cap funds that hold overseas shares, and direct US stocks or ETFs.
2. Look inside each one, not at its name. A "US Bluechip" fund can look very different from the S&P 500 (ICICI Prudential US Bluechip's biggest holding at 30 Sep 2026 was Microsoft at 2.97%).
3. Add up the repeats. If direct NVIDIA sits on top of a Nasdaq-100 fund, that is the same bet twice.
4. Run the overlap check in the analyzer below.

Frequently Asked Questions

Do a Nasdaq-100 fund and an S&P 500 fund overlap?

Yes. From the top 20 holdings alone, Motilal Oswal Nasdaq 100 FoF and Motilal Oswal S&P 500 Index Fund overlap by at least 42.0% in our October 2026 data. The real figure is higher because the rest of the holdings also share names. Two Nasdaq-100 funds overlap by 100%, since they copy the same index.

Is a world index fund enough diversification?

It spreads you across thousands of companies, but the US is 64.21% of MSCI ACWI and 72.94% of MSCI World, and its ten biggest companies are 25.40% of ACWI. Adding a separate US fund mostly adds more of the same US giants.

Is buying US stocks directly diversification if I hold international funds?

Only if you buy different companies. Buying NVIDIA or Apple directly on top of a Nasdaq-100 or S&P 500 fund adds to a holding you already have. Direct investing also brings LRS, 20% TCS above Rs 10 lakh a year, Schedule FA reporting and possible US estate tax exposure above USD 60,000.

Can I still buy international funds in India?

Mostly not. The USD 7 billion industry limit has been full since 2022 and most funds are closed to fresh money. Value Research listed 4 funds as open or reopening on 25 September 2026, none US-focused, and the list changes often. Check the fund house before you plan around any fund.

Disclaimer: This article is for educational purposes only and is not investment, tax or legal advice. The three-fund portfolio is a hypothetical illustration, not a recommendation. Index weights change daily; fund holdings are the latest disclosed top holdings and understate full portfolios, so overlap figures are minimums. Verify details with the fund house and a registered adviser.