To invest in sukuk from the US, you buy one of three funds: the SP Funds Dow Jones Global Sukuk ETF (SPSK), the Amana Participation Fund (AMAPX) or the Azzad Wise Capital Fund (WISEX). Individual sukuk trade in large institutional lots, mostly outside US exchanges, so a retail investor who wants halal fixed income exposure uses a fund. The three differ in cost, yield, what they hold and how you buy them: SPSK charges 0.50% and trades on an exchange, AMAPX charges 0.82% with a $100 minimum, and WISEX charges 0.89% with a $4,000 minimum. This page compares them and says which suits an emergency reserve, a retirement income sleeve or a 401(k) brokerage window. Our sukuk explainer covers the instrument itself.
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What sukuk are and why bonds and T-bills fail the test
A conventional bond is a loan: you hand over principal and the issuer pays you interest and returns the principal at maturity. That is riba, regardless of whether the issuer is a corporation or the US Treasury, which is why Treasury bills, bond index funds and money market funds all fail a Shariah screen; our conventional bonds verdict explains the ruling. A sukuk is a certificate of ownership in an underlying asset or venture. The holder receives a share of the income that asset produces (rent from a building under an ijara sukuk, profit from a trade under a murabaha sukuk) and, at maturity, the proceeds of the asset's sale or redemption. The return is linked to an asset, not to the passage of time on a loan, and the structure must be approved by a Shariah board before issue.
In practice sukuk behave like bonds in a portfolio: their prices move with interest rates and credit conditions, and they pay regular distributions. That is what makes them useful as a stabilizer next to halal equities, and also why they are not a substitute for an FDIC-insured deposit.
Why US investors buy sukuk through funds
Most sukuk are issued by sovereigns and companies in the Gulf and Southeast Asia, denominated in US dollars, and sold in minimum denominations of $200,000 to institutions. US brokers rarely offer them to retail clients, and when they do the spreads are wide. A fund solves access, diversification across dozens of issuers, and the Shariah review of each holding. The trade-off is a management fee and, for the two mutual funds, a minimum investment and possible transaction fee at third-party brokers.
SPSK vs AMAPX vs WISEX at a glance
The figures below are from sp-funds.com, saturna.com and azzadasset.com (the Azzad fund's fact sheet and prospectus) on October 2, 2026. Yields change daily; the dates shown are the ones each provider published.
| Feature | SPSK (SP Funds) | AMAPX (Amana Participation) | WISEX (Azzad Wise Capital) |
|---|---|---|---|
| Structure | ETF, exchange-traded | Open-end mutual fund, Investor shares | Open-end mutual fund |
| Net expense ratio | 0.50% | 0.82% Investor; 0.59% Institutional | 0.89% net (0.95% gross), reimbursement contract runs through December 1, 2029 |
| Strategy | Tracks the Dow Jones Sukuk Total Return Index | Actively managed sukuk portfolio | Actively managed; sukuk and other Islamic income instruments, with under 10% in dividend stocks |
| 30-day SEC yield | 5.04% as of September 30, 2026 | 3.04% as of September 30, 2026 | Not shown on the Q2 2026 fact sheet; ask Azzad |
| Net assets | $456.12 million | Not restated here; see saturna.com | Not shown on the fact sheet |
| Inception | See sp-funds.com | See saturna.com | April 6, 2010 |
| Minimum investment | One share | $100 | $4,000 initial, $300 additional; waived in 401(k) plans |
| Distributions | Monthly | Monthly | Per prospectus; taxable as ordinary income or capital gains outside a retirement account |
What each fund holds
SPSK from SP Funds is the passive option. It tracks the Dow Jones Sukuk Total Return Index, a benchmark of US dollar-denominated, investment-grade sukuk, so its holdings are dominated by Gulf sovereigns, quasi-sovereigns and Islamic banks. Because it is an index fund, there is no manager discretion over credit; you get the market. Our SPSK verdict page covers the Shariah review of the index.
AMAPX from Amana Funds, managed by Saturna Capital, is actively managed and also concentrated in dollar sukuk from Gulf issuers, with the manager choosing issuers and maturities. It is the oldest US sukuk mutual fund and pays distributions monthly, which suits an investor drawing income. The Institutional share class at 0.59% is available through some advisors and retirement plans.
WISEX from Azzad Asset Management is the broadest mandate. Its Q2 2026 fact sheet shows a weighted average effective maturity of 3.86 years, with 17.99% of the portfolio rated high yield and 9.56% not rated, 19.38% of holdings maturing in five to ten years and 1.76% beyond ten. The prospectus says the fund may hold a small portion, under 10%, in dividend-yielding stocks, and its portfolio turnover in the most recent fiscal year was 30.13%. The fact sheet describes the fund as seeking exposure to alternatives and emerging market yield, which means more credit risk than SPSK's investment-grade index in exchange for potentially higher income.
Yield, maturity and what the numbers mean
The 30-day SEC yield is the standardized figure to compare: it annualizes the fund's net income over the last 30 days after expenses. SPSK's 5.04% as of September 30, 2026 versus AMAPX's 3.04% on the same date is a meaningful gap, and part of it is the 0.32 percentage point difference in expense ratio; the rest reflects different holdings and maturities. Azzad does not print a 30-day SEC yield on its fact sheet, so ask for it directly before comparing. Maturity matters as much as yield: a fund with a shorter weighted average maturity, such as WISEX's 3.86 years, will see smaller price swings when rates move than a fund holding longer sukuk. Check each fund's current duration on its own page before relying on it as a stabilizer.
Where to buy each fund and what it costs to trade
- SPSK: any US brokerage account, including Roth IRAs and 401(k) brokerage windows. It trades like a stock, so the broker's ETF commission applies; at most large brokers online ETF trades are commission-free, but confirm on the schedule you are using.
- AMAPX: directly from Saturna Capital with a $100 minimum, or through most brokerages. At brokers that classify it as a transaction-fee fund, expect a purchase charge; Fidelity's BrokerageLink schedule, for example, lists transaction-fee funds at $49.95 or $100 per online purchase, so buying direct or in larger lumps avoids repeated fees.
- WISEX: directly from Azzad with a $4,000 initial and $300 subsequent minimum, or through platforms including Schwab and Fidelity according to the fact sheet. The minimum is waived for investors in 401(k) plans, which makes it a realistic request to put to your plan sponsor.
For a tax-advantaged account, SPSK is the simplest to hold because there are no minimums and no mutual fund transaction fees. For a taxable account where you want monthly income and do not mind a mutual fund, AMAPX direct at Saturna is cheap to set up. WISEX suits an investor who wants a manager actively seeking yield beyond the investment-grade index and who can meet the minimum.
How sukuk fund distributions are taxed
In a taxable account, all three funds report distributions on Form 1099-DIV. Income distributions from sukuk funds are generally ordinary dividends taxed at your marginal rate, not qualified dividends, because the underlying income is asset-based rental or trade profit rather than corporate equity dividends. Any capital gains the fund distributes are reported separately. Azzad's prospectus states the general rule for all three: unless you hold the fund in a tax-deferred arrangement such as a 401(k) or IRA, dividends and distributions are taxable as ordinary income or capital gains. That is a strong argument for holding your sukuk sleeve inside a Roth IRA or 401(k) window, where the income compounds untaxed, and keeping equity ETFs, whose dividends may be qualified, in the taxable account. The retirement planning hub covers which accounts suit which assets.
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Role in a portfolio: emergency fund, retirement income or 60/40 substitute
A sukuk fund is the halal portfolio's answer to the bond allocation, and it does three jobs well and one job badly.
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- Bond substitute in a balanced portfolio: a 60% halal equity, 40% SPSK or AMAPX mix behaves roughly like a conventional 60/40, with lower volatility than equities alone.
- Retirement income sleeve: monthly distributions from AMAPX or SPSK provide a cash flow to draw from, while the equity sleeve keeps growing.
- Parking money with a one-to-three-year horizon: a house down payment or a tuition payment due in two years can sit in a short-maturity sukuk fund with modest price risk.
- Emergency fund: this is the job it does badly. Fund prices fall when rates rise and sales take a day or more to settle, so a true emergency reserve belongs in a non-interest checking account; the emergency fund guide for Muslims explains the options.
Who should not use these funds
Anyone who needs the money within a few months, because a 2% or 3% price drop in a bad quarter can wipe out a year of yield. Anyone who needs FDIC or NCUA insurance, because a fund is an investment and can lose value; none of these three is a deposit. Anyone who cannot meet WISEX's $4,000 minimum or wants to avoid mutual fund transaction fees should stick to SPSK. And anyone looking for the yield of a high-yield bond fund should understand that WISEX's 17.99% high-yield allocation is the most aggressive of the three, while SPSK's investment-grade index is the most conservative on credit.
Verdict: which fund for which purpose
SPSK is the default for most US investors: the lowest expense ratio at 0.50%, the highest published 30-day SEC yield at 5.04% as of September 30, 2026, no minimum, and it fits inside any Roth IRA or 401(k) brokerage window with no transaction fee. AMAPX is the choice for someone who wants an active manager with a long record and monthly income direct from Saturna at a $100 minimum, accepting the 0.82% fee and lower published yield. WISEX is for investors who want a manager reaching for yield beyond the investment-grade index, can meet the $4,000 minimum, and accept the higher credit risk shown on its fact sheet. None is an emergency fund, and all belong preferentially in a tax-advantaged account. Facts checked against sp-funds.com, saturna.com and azzadasset.com on October 2, 2026.
Frequently asked questions
Are bonds halal?
No. A conventional bond is a loan that pays interest, which is riba, whether the issuer is a company, a municipality or the US Treasury. That rules out bond funds, Treasury bills and money market funds. Sukuk are the halal alternative: certificates of ownership in an asset or venture whose return comes from the income that asset produces, structured under Shariah board approval. US investors access them through SPSK, AMAPX or WISEX.
Is SPSK halal?
SPSK tracks the Dow Jones Sukuk Total Return Index, which includes only sukuk that have passed Shariah review at issue, and SP Funds runs its ETFs with Shariah oversight. Our SPSK verdict page covers the review in detail. The fund charges 0.50%, published a 30-day SEC yield of 5.04% as of September 30, 2026, and held $456.12 million in net assets on the SP Funds site when we checked.
What is the minimum to invest in a sukuk fund?
SPSK has no minimum beyond the price of one share, since it is an ETF. AMAPX can be opened directly with Saturna Capital for $100. WISEX requires $4,000 to open and $300 for additional purchases when bought directly from Azzad, though the minimum is waived for investors in 401(k) plans. Brokerage platforms may apply their own minimums or transaction fees to the two mutual funds.
Can I hold sukuk funds in a Roth IRA or 401(k)?
Yes, and it is usually the best place for them. Sukuk fund distributions are taxed as ordinary income in a taxable account, so holding them in a Roth IRA or a 401(k) brokerage window lets the income compound untaxed. SPSK is the easiest to hold in those accounts because it has no minimum or transaction fee. WISEX's prospectus waives its $4,000 minimum for 401(k) plan investors, which makes it a reasonable request to your plan sponsor.
Can a sukuk fund replace my emergency fund?
No. All three funds can lose value when interest rates rise or credit conditions worsen, and sales take at least a day to settle, so they are not a substitute for cash you may need next week. Keep your emergency reserve in a non-interest-bearing checking account and use sukuk funds for money with a horizon of at least one to three years, such as the bond sleeve of a retirement portfolio or a down payment due in two years.
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Which is better, SPSK or AMAPX?
SPSK is cheaper (0.50% versus 0.82% for AMAPX Investor shares), had the higher published 30-day SEC yield (5.04% versus 3.04% as of September 30, 2026), and trades without minimums or mutual fund fees, so it is the default for most investors. AMAPX offers active management from Saturna, a long record and monthly distributions direct from the fund company at a $100 minimum, which suits investors who prefer a manager choosing issuers over an index.
