What Makes a Business High Quality: Reading the Numbers Behind Superinvestor Holdings

Quality comes before price

Value investors going back to Graham and Buffett keep two questions apart that beginners tend to blur: is this a good business, and is it trading at a good price. A wonderful company bought at too high a price is still a bad investment. A mediocre one bought cheaply enough can work out fine. This guide is only about the first question. Price is its own discipline, and the numbers here say nothing about it.

There is no single 'quality' number. You build a picture from a few angles: how profitable the business is, whether that profit turns into cash, how well it earns on the capital it uses, and how steady all of it looks over time. The figures on Compounder's stock pages come straight from SEC filings, so you can run this read on any holding you find on the site.

Profit margins: the first look at pricing power

Net margin is the share of each dollar of revenue that survives all the way down to profit. It is the quickest read on pricing power. A business that can charge well above what it costs to serve a customer, and keep doing it, posts a high and steady margin. One fighting on price cannot.

The businesses superinvestors cluster in tend to sit at the high end. On their most recent filings shown here, Alphabet runs around a 57% net margin, Visa about 54%, Meta near 48%, Mastercard 46%, and Moody's 32%. Those are extraordinary numbers, and they are not an accident: a payment network or a ratings franchise takes a small cut of an enormous flow it does not have to fund. Apple, around 27%, and Amazon, near 17%, sit lower, which is the nature of selling physical products and running warehouses rather than tollbooths.

Two cautions. Compare margins inside an industry, not across it, because a supermarket and a software company live in different worlds. And read the trend rather than one quarter. A margin that has slid for several years usually means something the latest figure hides.

Free cash flow: does the profit turn into cash?

Accounting profit and cash are not the same thing, and the gap between them tells you a lot about a business. Free cash flow is the cash left after a company pays to run its operations and reinvest in them. FCF margin is that cash as a share of revenue. Buffett's 'owner earnings' is the same instinct: what the owner could actually take out at the end of the year.

Put net margin and FCF margin side by side and the businesses separate. Visa turns revenue into free cash at about 80%, higher than its net margin, because it barely spends on physical assets. Apple is similar, near 70%. These are capital-light machines. Alphabet is a different case: a 57% net margin but an FCF margin around 9% on its latest filing, because it is pouring money into data centers and chips. Amazon's FCF margin was negative on the same basis, near minus 10%, as it reinvests faster than the cash comes in.

A low or negative FCF margin is not automatically a red flag. It can mean a weak business, or a strong one spending hard on its future. Telling those apart is the actual work, and it is why one number is never enough.

Return on capital, and why it misleads

Return on equity asks how much profit a company earns on the money shareholders have left in it. A business that earns high returns on capital and can reinvest at those returns is the closest thing investing has to a compounding machine, which is why the metric sits near the center of quality investing.

It is also the easiest of these numbers to misread, in two ways. Debt and buybacks flatter it: equity is the denominator, so a company that borrows heavily or buys back stock until its equity is thin can show a dazzling return on a shaky base. A high number earned that way is worth less than the same number earned on a fortress balance sheet. And returns have to be read over full years and across a cycle, not from a single quarter. Compounder shows a per-filing figure, so use it as a prompt to pull up the multi-year picture and the debt behind it, not as a verdict on its own.

Reading them together

No single number settles anything, and the interesting cases are the ones where the metrics seem to disagree. Alphabet's thin free cash flow next to its fat net margin is not a flaw. It is a company in a heavy building phase, and the question is whether that spending pays off later. Berkshire Hathaway shows a low headline return on equity, which mostly reflects an enormous equity base built over decades rather than a weak business. Amazon spent most of its life with little or no free cash flow, by choice.

The reason to look at several metrics is that each one checks the others. A fat margin with no cash behind it, a high return on capital sitting on a pile of debt, a number that looks fine this quarter but has fallen for three years: each of those only shows up when you line the figures up together. Where the site marks data as incomplete or leaves a field blank, that is part of the read too. Treat a gap as a question, not a pass.

What the numbers can't tell you

These figures describe a business as it was on its last filing, up to a few months ago. They say nothing about what comes next. A moat can erode, a new manager can change how capital gets spent, an industry can turn. They also say nothing about price, which is what actually decides your return. A great business is not automatically a great investment. What you pay decides that.

So treat all of this as a way to ask better questions about the companies superinvestors own, not a scorecard that picks them for you. A 13F tells you who holds a stock. These numbers help you judge the business underneath it. What you do with that judgment, and at what price, is yours alone, and none of this is investment advice. Every figure here lives on the stock pages, refreshed each filing, if you want to run the read yourself.

Margin figures cited above are from each company's most recent filing on Compounder, through Q1 2026 (periods ending 2026-03-31). Source: SEC filings via SEC EDGAR.