Is the iShares MSCI World Islamic UCITS ETF (ISWD) Halal? Thirty Points Less America, Nine Points Less Technology, and Why the Screen Travels With You: A Sharia Analysis for Muslim Investors (2026)

Author: Zaid Alissa, CTO and Halal Finance Researcher | Published: September 2026 | Updated: September 2026

The iShares MSCI World Islamic UCITS ETF and its American sibling launched on the same day, 7 December 2007, from the same provider, at the same fee, under the same screening rulebook. The only thing that changes between them is the universe. That makes the pair a controlled experiment, and the result is worth knowing before you buy either: going global cuts the American weight of a Sharia screened portfolio by thirty percentage points and its top ten concentration by about fifteen, but it only takes nine points off the technology weight.

The reason is structural. The screen removes conventional banks, insurers and lenders in every country it touches. Diversifying the map does not diversify the filter.

Fund facts from the justETF profile for IE00B27YCN58, retrieved 4 September 2026. On 3 September 2026 stockanalysis.com reported 440 holdings and 1.21 billion dollars of assets for the London line.

The top ten are 36.11 percent of the fund: Microsoft 12.79, Micron Technology 3.96, Tesla 3.49, AMD 3.18, ExxonMobil 2.62, ASML Holding 2.58, Johnson and Johnson 2.48, Cisco Systems 1.80, Intel 1.61 and Applied Materials 1.60. Those add to 12.79 plus 3.96 plus 3.49 plus 3.18 plus 2.62 plus 2.58 plus 2.48 plus 1.80 plus 1.61 plus 1.60, which is 36.11. By country: United States 59.54 percent, Japan 7.11, United Kingdom 4.67, Canada 3.87, everywhere else 24.81. By sector: technology 41.65 percent, industrials 12.51, healthcare 12.43, non energy materials 10.19, everything else 23.22.

Set the two funds side by side on the same 30 July 2026 snapshot. This is the part of the decision that nobody publishes.

The arithmetic: 89.54 minus 59.54 is 30.00 percentage points off the American weight. 50.92 minus 36.11 is 14.81 points off the top ten. 15.80 minus 12.79 is 3.01 points off the single largest position. But 50.46 minus 41.65 is only 8.81 points off technology, and the fund is still more than two fifths in one sector after adding twenty three developed countries and 249 holdings.

That last number is the one to sit with. The conventional MSCI World has a financials sector of substantial size in every region. The Islamic screen removes it everywhere at once. What is left, in every developed market, leans towards companies that fund themselves from retained earnings rather than debt, and in 2026 that is disproportionately technology and pharmaceuticals. Our article on risk and diversification in halal investing works through what that means for a portfolio built entirely from screened funds.

Allah says in Surah Al-Baqarah, verse 275:

وَأَحَلَّ اللَّهُ الْبَيْعَ وَحَرَّمَ الرِّبَا

"But Allah has permitted trade and has forbidden interest [riba]." (Saheeh International)

MSCI World Islamic belongs to the MSCI Islamic Index Series, which uses total assets as the denominator of its financial ratios. That matters, because MSCI also runs an M-Series that uses a 36 month average market capitalisation instead, and the two produce different answers on the same company. The thresholds for this family, from the MSCI Islamic Index Series Methodology of December 2025, are 33.33 percent of total assets for total debt and for cash plus interest bearing securities, with an entry buffer at 30.00 percent and an exit buffer at 35.00 percent, and 70.00 percent of total assets for accounts receivable plus cash, with an entry buffer at 46.00 percent.

Business activity comes first: a company is out if it is directly active in, or derives more than 5 percent of its revenue cumulatively from, alcohol, tobacco, pork, conventional financial services and the rest of the prohibited list. MSCI defines that ratio as the sum of revenue from prohibited activities including interest income, divided by total income.

For the impure remainder MSCI computes a dividend adjustment factor: total income minus the sum of revenue from prohibited activities and interest income, divided by total income, updated quarterly. Take a company with total income of 100, prohibited revenue of 1 and interest income of 2. The factor is 100 minus 3, giving 97, divided by 100, which is 0.97, so 3 percent of that dividend is impure. MSCI applies the factor to reinvested dividends inside the index. iShares pays you cash twice a year and publishes no investor level purification figure. AAOIFI Shari'ah Standard No. 21 on Financial Paper treats your share as an undivided ownership interest in the company, which is why the impure fraction is yours to deal with rather than the index's.

At fund level, the answer is clean. justETF records securities lending for this fund as none, so there is no interest fee earned on the portfolio behind your back. Ferri describes that lending revenue in exactly those terms in The ETF Book (2008, p. 62), and Mufti Faraz Adam treats it as a defect in his research paper "Solving the Dynamics of Shariah in ETFs and ETNs".

AAOIFI's thresholds, as Mufti Faraz Adam sets them out in "Making Sense of the 30% Rule in Islamic Finance" (Amanah Advisors, 14 December 2020), are interest bearing debt at or below 30 percent of market capitalisation, interest bearing deposits and securities at or below 30 percent, and prohibited income at or below 5 percent of total income.

The impure income test is identical. The debt test is not, and the difference is the denominator rather than the headline number. MSCI's ceiling in money is 0.3333 times total assets. AAOIFI's is 0.30 times market capitalisation. They coincide when market capitalisation divided by total assets equals 0.3333 divided by 0.30, which is 1.111. Above that ratio AAOIFI is the more permissive rule; below it, AAOIFI is the stricter one.

For a developed market index whose largest constituents trade at several times their book value, the total assets divisor is the binding constraint almost everywhere. FTSE Russell makes the same point in its research on Shariah indexing, describing asset based screening as the more conservative approach because it does not move with the share price. Post 71 works the arithmetic through on this fund's largest holding, and you can run the AAOIFI test on any individual name with our stock screener.

AAOIFI Shari'ah Standard No. 31 on Controls on Gharar in Financial Transactions makes a contract defective where its object is not adequately knowable. The methodology here is published in full, with the buffers, the purification formula and the capping rule all stated, and iShares publishes holdings daily. That places the fund at the good end of Ferri's disclosure scale, well away from the proprietary indexes where, in his words, "not enough public information is available to determine" the selection rule (p. 139).

What is not disclosed is the working. MSCI's Sharia advisers certify quarterly that the constituent list reconciles with MSCI's screening reports. The reports themselves are not published, so an investor can check the rule but not the application of it to a particular company.

None. The fund is long only, physically backed, holds no derivatives and takes no leverage. The gambling risk in a product like this belongs to the investor's behaviour, not the fund's construction, and Ferri's warning that intraday dealing "may cause some investors to trade too much" (p. 101) is the relevant one.

Replication is where this fund beats its American sibling. ISWD replicates the index in full. ISUS uses optimised sampling. Ferri treats sampling as manager discretion and therefore as a source of tracking error (pp. 78 to 79, p. 138). The world fund holds a far wider universe and yet takes less discretion doing it, which is unusual and worth crediting.

Cost. The unscreened comparison is the iShares Core MSCI World UCITS ETF at 0.20 percent a year. ISWD charges 0.30. The gap is 0.30 minus 0.20, which is 0.10 percentage points, and on a 10,000 pound holding that is 10,000 times 0.0010, or 10 pounds a year. That is a notably smaller screening premium than on the American pair, where the same calculation gives 23 pounds. Against Ferri's own averages, 0.21 percent for market index ETFs and 0.51 percent for custom index ETFs (p. 200), ISWD sits 0.09 points above the first and 0.21 points below the second.

Scale. At EUR 1,398 million the fund is 1,398 divided by 479, which is 2.92 times the size of the USA version. Ferri's point that "There is a critical level of assets needed to make a fund profitable" (p. 33) is a closure risk argument, and on that measure this is the more secure of the two.

Tax. The fund has UK reporting status and can be held in an ISA or a SIPP through the London lines. Ferri's note that the foreign withholding tax credit is available only in taxable accounts (p. 203) is the one place where a sheltered account costs a global fund something an American fund does not lose.

The divisor. AAOIFI measures against market capitalisation. MSCI's Islamic Index Series measures against total assets, its M-Series against a 36 month average market capitalisation. Neither AAOIFI nor any of the named scholars declares the assets divisor invalid, and MSCI does not claim AAOIFI conformity. Some hold the assets divisor to be the sounder measure precisely because it is not moved by market sentiment; others hold that AAOIFI's text specifies market capitalisation and that a different divisor is a different standard. Both readings are held by people working from the same documents.

Purification across jurisdictions. Mufti Taqi Usmani, in "Principles of Shari'ah Governing Islamic Investment Funds", places the duty to give away the impure proportion on the investor. For a fund holding several hundred companies across two dozen countries, discharging that duty precisely is materially harder than for a single country fund, and the provider publishes nothing to help. Usmani's account makes no exception for difficulty. Some contemporary practitioners accept a conservative flat estimate; others insist on the fund's own figure and decline funds that do not publish one. This article does not choose.

Developed markets only. MSCI World excludes emerging markets by construction, so an investor holding only this fund is holding no Muslim majority market at all. Whether that matters is an allocation question rather than a fiqh one, and the emerging market version of the same screen is the subject of a separate article.

Do not buy both the USA and the World fund. Ferri's warning against redundant funds (p. 308) applies exactly here: MSCI World Islamic is 59.54 percent American, so holding it alongside MSCI USA Islamic doubles up on the same names. Pick one.

Expect the sector tilt to survive. Two fifths in technology after adding twenty three countries is the screen's signature, not a temporary condition.

Compute your own purification. Nothing in the semi annual cash distribution has been cleansed for you.

Check the securities lending line for any competitor you compare this fund with. For this one it is none. That is not universal among Sharia screened ETFs, and it is one of the few fund level facts a company screen cannot reach.

Size the position as a single sector concentrated equity holding, not as a world portfolio. Our portfolio design article sets out how, and if part of your allocation is in digital assets the crypto screener applies the same discipline there.

ISWD is the better engineered of the two long standing iShares Islamic equity funds. It replicates in full rather than sampling, it is nearly three times the size, its screening premium over the unscreened equivalent is ten pounds a year on ten thousand rather than twenty three, and it lends nothing. The concentration it removes is real and the arithmetic above quantifies it.

What it cannot remove is the shape the screen imposes. A Sharia screened global equity fund is a technology and healthcare fund with a geographic spread, and an investor should choose it knowing that rather than discovering it in a drawdown. The compliance is sound against MSCI's published rulebook. The rulebook is not AAOIFI's, and the difference is in the denominator, not the headline.

This article is educational and is not a fatwa. Consult a qualified scholar for a ruling on your own circumstances.

Yes. Both are London lines of the same share class of the iShares MSCI World Islamic UCITS ETF, ISIN IE00B27YCN58. ISWD is quoted in pence and ISDW in US dollars. The holdings, the fee and the net asset value are the same; only the currency in which the trade settles differs.

No. MSCI World covers developed markets only, so the fund's universe stops there. An investor who wants Sharia screened emerging market exposure needs a separate fund tracking the emerging market version of the same MSCI screen.

Because the screen removes conventional banks, insurers and lenders in every country, and then removes companies whose debt exceeds a third of their total assets. Across developed markets that leaves a universe tilted towards companies funded by retained earnings. Adding countries moves the country weights, not the sector logic.

It is better on Ferri's terms, because sampling introduces manager discretion and therefore tracking error (pp. 78 to 79). It is neutral in fiqh: both hold shares in screened companies. The practical benefit is that what you own matches what the published rulebook says you own.

No. justETF records securities lending as none for IE00B27YCN58. That matters because lending income is an interest fee earned at fund level, which no company screen would catch.

0.30 percent against 0.20 percent for the iShares Core MSCI World UCITS ETF, a gap of 0.10 percentage points, which is 10 pounds a year on a 10,000 pound holding. That is the fee difference only. It says nothing about return, and Ferri's finding that screening does not improve risk adjusted performance (p. 146) is worth remembering when anyone claims otherwise.

MSCI's dividend adjustment factor is applied to reinvested dividends within the index calculation. The fund pays you cash and does not publish an investor level purification figure. On Mufti Taqi Usmani's account the obligation to compute and give away the impure proportion remains with you.