QQQ is the Invesco QQQ Trust. Tracking the Nasdaq-100 Index, it is a USA-domiciled ETF launched in 1999 and converted from a unit investment trust to a standard open-end fund on 22 December 2025. It is one of the oldest, largest and most liquid vehicles for capturing large-cap US growth and technology equities.
CSPX is BlackRock's iShares Core S&P 500 UCITS ETF. As an Ireland-domiciled, accumulating fund with about $157 billion in assets (as of October 2026), it is the largest and most established S&P 500 ETF available to Indian investors looking for tax-efficient US market exposure.
Indian investors are often confused between these two because both serve as highly liquid, primary vehicles for US large-cap market exposure. Here is exactly how and where they differ under the hood, and which one makes the most sense for your portfolio.
| Feature | QQQ | CSPX |
|---|---|---|
| Provider | Invesco | iShares (BlackRock) |
| Index | Nasdaq-100 Index | S&P 500 |
| TER | 0.18% | 0.07% |
| AUM | One of the world's largest ETFs | ~$157B (Oct 2026) |
| Launched | 1999 | 2010 |
| Replication | Physical (full) | Physical (full) |
| Domicile | USA | Ireland |
| Structure | Open-end ETF (distributing) | Accumulating |
| ISIN | US46090E1038 | IE00B5BMR087 |
Table of contents
- What QQQ and CSPX have in common
- Where they differ
- Which should Indian investors buy?
- Already holding one? Should you switch?
What QQQ and CSPX have in common
- Both are massive, highly liquid primary vehicles for capturing large-cap US equities.
- Both physically hold the underlying shares of their respective indices.
- Both feature heavy allocations to dominant "Magnificent Seven" companies like Apple, Microsoft, Amazon, and Nvidia.
- Both share the same Indian tax treatment: Short-Term Capital Gains (STCG) at your applicable slab rate if held for 24 months or less, and Long-Term Capital Gains (LTCG) at 12.5% if held for more than 24 months.
- Both are readily available on global platforms like Interactive Brokers and Paasa.
Where they differ
Index focus and concentration risk
While CSPX provides broad market exposure across all sectors via the S&P 500, QQQ is highly specialized. By rule, the Nasdaq-100 strictly excludes all financial companies. As a result, QQQ is heavily concentrated in Information Technology (roughly 49%) and Communication Services.
The portfolio is exceptionally top-heavy, with its top 10 holdings routinely accounting for 45% to 50% of the total fund weight. While this concentration has historically driven massive outperformance over the broader market, it introduces distinct growth-factor risks and significantly higher historical volatility compared to CSPX.
Domicile and tax efficiency
Because QQQ is USA-domiciled, holding it exposes Indian investors to a severe 40% US Estate Tax risk upon death. Furthermore, it operates as a distributing fund, which creates an ongoing tax drag for international investors.
CSPX is legally domiciled in Ireland. This completely shields your assets from the 40% US Estate Tax. Additionally, CSPX utilizes the US-Ireland double taxation treaty to legally reduce dividend withholding taxes to just 15%, providing a massive structural advantage for non-US residents.
Fund structure and internal mechanics
CSPX is a modern, open-ended accumulating ETF. It automatically reinvests dividends internally without creating an annual taxable event in India. Furthermore, BlackRock actively lends out CSPX's physical shares to short sellers, generating extra revenue that effectively offsets its low 0.07% Total Expense Ratio.
QQQ was launched in 1999 as a unit investment trust (UIT), a structure that barred it from lending its securities. After a shareholder vote, QQQ converted to a standard open-end ETF on 22 December 2025, and its expense ratio fell from 0.20% to 0.18%.
The open-end structure allows QQQ to lend securities, as CSPX does. QQQ still pays its dividends out, though, so for an Indian investor it remains a distributing fund taxed every year at the slab rate.
Which should Indian investors buy?
For long-term Indian buy-and-hold investors, CSPX is the mathematically and structurally superior choice. Its Ireland domicile protects your wealth from the US Estate Tax, its accumulating structure prevents annual dividend tax leakage, and its broad S&P 500 exposure provides a robust, diversified foundation for building long-term wealth.
You should pick QQQ only if you are an active tactical trader or institutional hedger who requires its unmatched daily trading volume and deep options market.
If you want a pure Nasdaq-100 allocation without US estate tax risk, use an Ireland-domiciled UCITS Nasdaq-100 ETF instead of QQQ. The accumulating options are iShares' CNDX on the London Stock Exchange in USD and Invesco's EQQQ Nasdaq-100 UCITS ETF Acc, which trades as EQAC on the SIX Swiss Exchange in USD and as EQQB on Xetra in EUR. Both charge 0.30% a year.
Already holding one? Should you switch?
If you already hold QQQ, deciding whether to switch requires weighing immediate switching costs against structural tax risks. Selling your QQQ shares triggers a capital gains event in India, meaning you will pay STCG at your slab rate if held for 24 months or less, or LTCG at 12.5% if held for more than 24 months.
However, unlike switching between two identical UCITS funds, transitioning out of QQQ removes your exposure to the 40% US Estate Tax. If your US portfolio is large, absorbing the capital gains tax hit today might be a necessary defensive move to protect your overall estate.
If your portfolio is smaller and you wish to avoid triggering immediate taxes, simply leave your existing QQQ shares alone and direct all future capital into CSPX, or into CNDX or EQAC if you want to stay with the Nasdaq-100.
Building your portfolio with Ireland-domiciled UCITS ETFs is a tax-efficient way for Indian investors to access global markets. You can read our complete LRS guide to learn how to fund your global account seamlessly.
Compare more: CSPX vs IWDA, CSPX vs VWCE.
See also: how to invest in the Nasdaq-100 from India and UCITS alternatives to QQQ.
Related: What are UCITS ETFs? and Top UCITS ETFs for Indian investors
About Paasa
Paasa is a global investing platform for Indian residents and NRIs, with access to stocks and ETFs across 11 markets: the US, Canada, the UK, Germany, France, Switzerland, the Netherlands, South Korea, Japan, Hong Kong and Singapore.
- Estate Tax Protection: Paasa gives you direct access to Ireland-domiciled (UCITS) ETFs, including CSPX. This allows you to legally shield your long-term wealth from the 40% US Estate Tax.
- Seamless Funding & LRS: We handle the LRS compliance process and secure competitive FX rates, ensuring your capital reaches the global markets efficiently.
- The Compliance Advantage: We generate ready-made capital gains and Schedule FA tax reports tailored for the Indian tax system, so you can focus entirely on growing your portfolio instead of managing spreadsheets.
