What is an ETF? Explained simply.

An ETF is a basket of shares

Imagine you want to own shares in 400 companies across 23 countries. You'd need to buy each one individually, pay commission on every trade, and monitor all of them. That's not practical for most people.

An ETF (Exchange Traded Fund) solves that. It bundles hundreds of shares into one product. You buy one unit of the ETF, and you automatically own a tiny piece of every company inside it. One purchase. Instant diversification.

How it works in practice

Say ISWD (the most popular halal ETF for UK investors) is trading at £6.50 per unit. You buy 10 units for £65. You now own a proportional slice of all 400+ companies inside the fund, spread across the US, Europe, Japan, and more.

When those companies grow and their share prices rise, the value of your ETF units rises too. When you invest £50 next month, you buy more units at whatever the price is then. Over time, your holdings grow.

ETF vs single stock: why diversification matters

If you put £1,000 into one company and it goes bankrupt, you lose everything. That happens. Companies fail, get disrupted, make bad decisions.

If you put £1,000 into an ETF holding 400 companies, one failure barely moves the needle. A 0.25% weight in a single company dropping to zero costs you £2.50. Diversification doesn't eliminate risk: it distributes it.

Why fees matter more than you think

Every ETF charges an annual fee called the TER (Total Expense Ratio). It's taken automatically from the fund's value. You don't pay a bill, the NAV just reflects it.

0.30%/year sounds trivial. Over 20 years on £20,000 invested, the difference between a 0.30% fund and a 1.50% fund is roughly £8,000 in foregone growth. Fees compound against you just like returns compound for you.

ISWD charges 0.30%/year. That's reasonable for a screened, specialist fund. Avoid actively managed halal funds charging 1.5–2%, since most don't outperform the index anyway.

What ISWD actually owns

ISWD tracks the MSCI World Islamic index. It holds 400+ Shariah-compliant companies across 23 developed countries. The largest holdings tend to be US tech companies (Apple, Microsoft, NVIDIA), followed by European and Japanese industrials.

All holdings are screened against shariah criteria: sector exclusions, debt ratios, interest income limits, and cash-to-assets ratios. The screening is done by a shariah supervisory board and reviewed quarterly.

You can see the full holdings list on the iShares website at any time. It's completely transparent.

ISA-eligible and available on Trading 212

ISWD is fully eligible for a UK Stocks & Shares ISA, meaning all growth is tax-free. You can buy it on Trading 212 for as little as £1 (fractional shares), InvestEngine, or Hargreaves Lansdown.

That's the core product for most halal investors in the UK. Simple, low-cost, diversified, shariah-compliant.