How to Analyse Companies as a Muslim Investor: The DuPont Model, Leverage and Where Halal Ninja Stops Short: A Sharia Analysis for Muslim Investors (2026)

Verdict: Fundamental analysis is not merely permissible for a Muslim investor; it is the diligence the trust deserves. The right order of operations is screen first, analyse second. The DuPont decomposition of return on equity is the correct core tool, and Halal Ninja's guide to it is the strongest of the three Halal Ninja guides reviewed on this site. But it never connects its own best insight, that leverage is what kills companies, to the AAOIFI screen that already caps interest-bearing debt; it recommends technical analysis without a word on maysir; and it points readers at illiquid small caps without the gharar warning they need. Our version closes those loops.

Owning a share is owning a business. Before the price chart, before the analyst notes, there is a company that sells something, owes something, and earns something, and the investor's job is to understand all three. Allah says in Surah An-Nisa, verse 29:

يَٰٓأَيُّهَا ٱلَّذِينَ ءَامَنُوا۟ لَا تَأْكُلُوٓا۟ أَمْوَٰلَكُم بَيْنَكُم بِٱلْبَٰطِلِ إِلَّآ أَن تَكُونَ تِجَٰرَةً عَن تَرَاضٍ مِّنكُمْ

"O you who have believed, do not consume one another's wealth unjustly but only [in lawful] business by mutual consent." (Saheeh International)

Lawful business by mutual consent presumes you know what you are consenting to. Analysis is how you find out.

For a Muslim investor the sequence matters. AAOIFI Shari'ah Standard No. 21, Financial Paper (Shares and Bonds) (issued 2004; English edition 2015) gates the universe before any valuation question arises: the business activity must be permissible, interest-bearing debt and interest-bearing securities must each stay below 30 percent of market capitalisation, and impermissible income below 5 percent of revenue, as applied in practice by AAOIFI-based screens such as Zoya's. Analysis cannot rescue a company that fails the screen; a brilliantly profitable brewery is still a brewery. Screening also cannot replace analysis: SPUS holds roughly 200 screened companies, and they are not all equally good businesses. Run candidates through the stock screener first, then spend your effort on what survives. Our analyses of Apple and SpaceX show the two stages working together.

Return on equity is the profit a company generates per unit of shareholder capital. The DuPont decomposition splits it into three multiplied terms:

RoE = (Net Income / Sales) x (Sales / Assets) x (Assets / Equity)

Profitability, efficiency, leverage. The same headline number can be built three very different ways, and the construction matters more than the total.

Company B earns its 20 percent by selling profitably and sweating its assets. Company A earns the same figure by financing three dollars of assets with other people's money for every dollar of equity. For a conventional investor these are different risk profiles; for a Muslim investor they demand different questions, because the first thing to establish about A is how much of that financing bears interest.

Here is the connection Halal Ninja's guide walks straight past. The third DuPont term, assets over equity, rises when a company funds itself with liabilities, and not all liabilities are riba: payables, deferred revenue and insurance float inflate the term without a single interest contract. So treat the leverage term as a diagnostic rather than a verdict. When it is doing most of the work in a high RoE, open the debt note and establish what the liabilities actually are; where they are interest-bearing debt, the shareholders' return is being amplified by borrowed money whose cost is riba. The AAOIFI screen measures exactly that exposure, interest-bearing debt against market capitalisation. Note that the two ratios share a subject, not a denominator: DuPont divides book assets by book equity while the screen divides interest-bearing debt by market value, so a company trading far above book value can pass the screen while showing high book leverage. What survives the arithmetic is the direction of the discipline: a screened company's interest-bearing debt is capped, so the more of its RoE that comes from margin and turnover rather than borrowing, the more comfortably it lives inside the threshold. This is why fundamental analysis and Sharia screening are not parallel activities but one activity: preferring high-margin, high-turnover, low-leverage businesses is simultaneously the prudent stance and the compliant one. Interest coverage and the quick ratio, which Halal Ninja rightly recommends, then confirm the debt that does exist will not sink the firm. How discount rates and valuation interact with riba is covered in our DCF analysis.

Halal Ninja's guide closes by pointing readers at small, overlooked companies trading below tangible book value. As a value hunting ground this is respectable; as unqualified advice to retail Muslim investors it is incomplete in a way that matters. Small caps carry thin disclosure, wide spreads, and sometimes stale or unauditable asset values; a liquidation-value thesis depends on numbers the minority shareholder cannot verify and a liquidation that may never come. Gharar in fiqh is excessive uncertainty in what you are buying, and while statutory disclosure means buying a listed small cap does not amount to the contract-voiding gharar of classical fiqh, the practical uncertainty is real and deserves naming. The mitigation is diligence proportionate to opacity: read the filings, discount the intangibles, size the position to survive being wrong, and diversify as discussed in our risk and diversification analysis.

The guide's list of softer factors includes the relative strength index (RSI) and resistance levels. Technical analysis is a forecast of crowd behaviour from price patterns, and trading on it is a wager on price movement detached from the underlying enterprise. None of the scholars cited on this site has published a ruling on RSI, so what follows is this article's own application of the maysir principle. Chart-informed timing of an otherwise sound investment is not gambling outright, but a strategy that is only price patterns, with no claim about the business, sits close to maysir: profit sought from the movement itself rather than from productive risk-bearing. A guide written for Muslim investors should at least flag the tension. Fundamental analysis, by contrast, is the opposite of maysir: it ties your return to the fortunes of a real enterprise you have studied.

The candid assessment: this is Halal Ninja at their best and still short of what the topic needs. The DuPont framing is correct and well chosen; the instinct that leverage is the likeliest killer is exactly right; analysing profitability at several levels of the income statement is sound practice; comparing against industry averages is the right discipline. We are glad the article exists.

What it lacks is the Muslim half of its own audience's question. It names halal investing and then never applies a screen, cites no standard and quotes no scholar; a reader finishes knowing how to decompose RoE and not knowing that the borrowing behind the leverage term is the thing the AAOIFI screen exists to cap. There are no sources to check, no worked screening example, no purification note, and recommendations, technicals and micro caps, whose fiqh tensions go unmentioned. It teaches the arithmetic and skips the amanah. Our version is better not because the finance is different but because the finance is finished: the same DuPont engine, connected to Standard 21, to riba, gharar and maysir, and to sources you can verify yourself.

The scholars in scope agree that equity analysis is permissible and that screening precedes it; they differ on how much of the compliance question analysis must carry. Mufti Taqi Usmani (An Introduction to Islamic Finance, 1998) sets qualitative conditions, a permissible core business, purification of interest income, and the condition that the company hold some illiquid real assets before its shares may trade above face value, which makes the analyst's judgement about what the company really owns and does central. Sheikh Joe Bradford, as Shariah advisor to Zoya (joebradford.net, 2020), works within the AAOIFI quantitative thresholds, which turn screening into checkable arithmetic and leave analysis free to focus on business quality. Mufti Faraz Adam's methodology through Amanah Advisors is the most granular, tracing individual revenue streams, which demands the deepest analysis of the three before a verdict is even possible. The practical divergence: a company can pass Bradford's ratios while Faraz Adam's revenue tracing flags it, and Usmani's conditions can exclude structures the ratios never see. This blog presents all three and does not arbitrate between them.

Work in this order. Screen the candidate against Standard 21 and drop it on failure; if it passes with residual impermissible income, purify that fraction of your return using the method set out in our AAOIFI guide. Decompose its RoE and insist the answer come from margin and turnover rather than leverage. Stress the debt that remains with interest coverage and the quick ratio. Compare every ratio with the industry's, not the market's. Read the last two annual reports before trusting any of it. Then, and only then, weigh softer signals such as management quality and insider transactions, and treat chart patterns as curiosities rather than reasons. Apply the identical discipline of verify-then-buy to digital assets through the crypto screener, where the screening layer matters even more because the disclosure layer is thinner. The screening thresholds themselves, and why they sit at 30 and 5 percent, are explained in our AAOIFI guide.

Analysing companies is where halal investing stops being a filter and becomes a craft. The DuPont model is the right spine for that craft, provided the Muslim investor reads its third term with Muslim eyes: leverage-built returns are riba-built returns, and the screen and the analysis are enforcing the same principle from two directions. Halal Ninja's guide teaches the spine well and omits the eyes, no screen, no sources, no fiqh, plus two recommendations that needed warnings they never received. Take its framework; it is sound. Then finish the job here: screen first, favour margin and turnover over leverage, respect what you cannot know about small companies, and keep your returns tied to enterprises rather than price wiggles. That is analysis as amanah, and it is what this site is built to make checkable.

This analysis is educational and is not a fatwa or financial advice. Screening data changes with each filing; verify before acting.

Is fundamental analysis halal? Yes. Studying a business before buying its shares is diligence, not speculation, and it is the practice the sources here uniformly assume. The compliance questions attach to what you buy and how it is financed, not to the act of analysing.

What is the DuPont model in one sentence? It splits return on equity into profit margin times asset turnover times leverage, so you can see whether returns come from the business or from borrowed money.

Why does leverage matter more for Muslim investors? Because much of it is interest-bearing debt. A high assets-to-equity ratio is the signal to open the debt note: the AAOIFI screen caps interest-bearing debt at 30 percent of market capitalisation, and returns amplified by such debt are returns amplified by riba. The discipline pushes screened companies to earn their returns mainly from margin and efficiency.

Is technical analysis haram? Not categorically, but trading purely on price patterns detaches profit from productive risk-bearing and sits uncomfortably close to maysir. Used at all, it should season a fundamental thesis, never replace one.

Are small cap value stocks halal? Screening applies identically at any size, and passing small caps are permissible. The added concerns are practical: thin disclosure, wide spreads and unverifiable asset values raise real uncertainty, so diligence and position sizing must rise to match.

What did Halal Ninja's analysis guide get wrong? Less wrong than unfinished. The DuPont framework and the focus on leverage risk are correct, but the guide never applies a Sharia screen, cites no standards or scholars, and recommends technicals and micro caps without flagging the maysir and gharar tensions.

Which ratios should I check first? In order: the three AAOIFI screening ratios, then the DuPont trio, then interest coverage and the quick ratio, each compared against the company's industry rather than the whole market.