MercadoLibre and the Spreadsheet Trick That Decides Everything

Revenue jumped 50%. Payment volume broke $100 billion. The credit portfolio reached $16 billion without credit quality breaking. And operating margin fell again. MercadoLibre is no longer asking investors whether its investments are working. It is asking how long they are willing to wait to be paid for them.

Last time I wrote about MercadoLibre, I gave the company five tests it had already agreed to take. It passed all five.

That made for a wonderfully clean conclusion. This quarter refuses to cooperate.

MercadoLibre just produced the first $10 billion revenue quarter in its history. Gross merchandise volume reached $21.9 billion. Mercado Pago processed more than $100 billion. Assets under management rose 68%. The credit portfolio grew 75%. By almost every measure of scale, reach, and customer engagement, the company is accelerating.

And operating margin fell to 6.7%.

Again.

That is the quarter in one sentence: the machine is moving more merchandise, processing more money, holding more customer assets, and issuing more credit—but keeping less operating profit from each dollar of revenue.

This is not a failed report card. It is something more interesting: a brilliant student submitting exceptional work with an expense account attached.

The Number That Refuses to Behave

Let us begin with the part management would probably prefer investors admire from a greater distance.

This is not three sequential declines; it is two declines across three quarter-ends. But it is also not statistical lint to be brushed from an otherwise handsome jacket. In the June quarter, operating income fell 17% year over year even as revenue rose 50%. Net income declined for a third consecutive quarter.

Growth investors have a dangerous phrase for moments like this: the company is investing through the income statement.

Sometimes that is exactly right. Amazon spent years making patient shareholders look clairvoyant. Sometimes it is simply a more flattering way to say that costs are rising faster than profits. The income statement does not label the difference for us.

We have to do the unpleasant work ourselves.

The relevant question is therefore not whether MercadoLibre is spending heavily. It plainly is. The question is whether the spending is purchasing durable economic advantages—or merely purchasing revenue.

Follow the Money, Then Follow the Packages

During the first half of 2026, MercadoLibre spent $712 million on capital expenditures, 31% more than a year earlier. Roughly $454 million went toward shipping facilities, offices, and other physical infrastructure across Brazil, Mexico, and Argentina; another $209 million went toward technology.

Those are not vague promises filed under “innovation.” They are buildings, systems, and capacity.

Brazil is receiving a 50% increase in investment for the year, including fourteen additional fulfillment centers that will bring the national total to 42. Mexico is receiving 35% more investment, with 8,500 jobs attached.

That matters because MercadoLibre's moat is not a website. Websites can be copied. Its moat is the dense commercial nervous system beneath the website: warehouses, last-mile delivery, payments, advertising, credit, data, and the habit of using them together.

A marketplace customer who also uses Mercado Pago is not merely two customers sharing an email address. Management says these “ecosystemic” users produce contribution profit several times greater than the combined value of a marketplace-only user and a fintech-only user. In other words, the pieces become more valuable when connected.

That is what the current spending is trying to buy: not another transaction, but another connection.

The early evidence is encouraging. Cross-border GMV grew 60% on a currency-neutral basis, with triple-digit growth in Brazil and Argentina. Volume through MercadoLibre's China fulfillment operation rose 170% in one quarter. This is a small business beside the core marketplace today, but it reveals something strategically important: MercadoLibre is building the infrastructure to become the commercial gateway into Latin America, not merely the region's domestic shopping mall.

That distinction may sound grandiose. The packages are already moving.

The Quiet $23 Billion Business

The least appreciated number in the quarter may not have involved commerce at all.

Mercado Pago's assets under management reached $23 billion, up 68% year over year. Assets per user rose 29%.

That second number matters more than the first.

User growth can be purchased. Deposits require trust. When existing customers leave more money inside an ecosystem, they are telling you that the product is becoming part of their financial lives rather than remaining an app they occasionally open.

This is how a payments service begins to resemble a financial platform. The customer receives money there, saves it there, spends from it, borrows against the relationship, and becomes progressively less interested in rebuilding that financial identity somewhere else.

Mercado Pago is not just processing transactions anymore. It is accumulating gravity.

Gravity, however, creates its own danger. A platform holding more customer assets and extending more credit can compound beautifully—right up until underwriting discipline weakens.

Which brings us to the number that mattered most to me.

Sixteen Billion Dollars of Credit—and No Cracks Yet

MercadoLibre's credit portfolio grew 75% in one year to more than $16 billion. A number like that deserves suspicion before admiration.

Fast loan growth can flatter nearly every line of a financial statement. It creates interest income, stimulates purchases, deepens customer engagement, and makes management presentations glow. The losses arrive later, after the celebration has moved on to a different slide.

So I was not primarily interested in how quickly Mercado Crédito was growing. I wanted to know whether the borrowers were still paying.

The 15-to-90-day nonperforming-loan ratio was 7.0% for the portfolio as a whole and 4.6% for credit cards—both near historical lows. Management also reported no sign of deterioration in Brazil's credit book.

That is not proof that losses cannot rise. A young, rapidly expanding credit portfolio has not yet experienced every economic condition it will eventually meet. But this was the quarter in which aggressive growth could have begun exposing weak underwriting. It did not.

For now, MercadoLibre is doing the difficult thing: expanding credit at extraordinary speed while holding early-stage delinquency near the best levels in its own history.

That earns a checkmark—not immunity from future examinations.

Mexico Has One Quarter to Turn an Explanation Into Evidence

Part of the margin pressure came with a specific explanation.

Mercado Pago faced higher chip costs for point-of-sale devices in Mexico. It also recorded an upfront charge after restocking a large number of those devices. Because MercadoLibre sells the hardware at a loss to acquire merchants, stocking more devices pulls the loss forward before the future payment volume arrives.

That is plausible. It is economically coherent. It may even prove attractive.

It is not yet confirmed.

Management also pointed to weak consumption during the World Cup, when customers apparently spent more time watching football and less time shopping. Latin America may be the only region where a global sporting event can plausibly appear as a line item in an e-commerce margin discussion.

But a good explanation is not the same as recovered economics. If restocking was genuinely temporary and World Cup softness was genuinely transitory, Mexico's margin should improve next quarter. The company has given investors a clean falsifiable claim. I intend to treat it like one.

No improvement would change the interpretation. What looks today like a temporary invoice would begin to resemble a structural cost.

The Market Is Asking the Wrong Question

After the release, the stock fell despite revenue and earnings exceeding expectations. That reaction was not irrational. The market has stopped asking whether MercadoLibre can grow. Twenty-eight consecutive quarters of commerce revenue growth above 30% have made that question rather dull.

The harder question is what the growth will eventually earn.

This creates a peculiar valuation problem. If MercadoLibre were growing slowly with a 6.7% operating margin, the answer would be easy. If it were growing 50% with expanding margins, the answer would also be easy—although the stock would probably be priced somewhere north of common sense.

Instead, investors are being asked to value a company whose competitive position appears to be strengthening while its current profit conversion is weakening.

That is not contradiction. It is duration risk.

The investments may produce excellent returns, but shareholders do not receive those returns when the fulfillment center opens or the credit card is issued. They receive them when higher engagement, transaction density, advertising revenue, and financial-service adoption eventually produce more cash than the expansion required.

MercadoLibre has shown the first half of that equation magnificently. It has not yet finished showing the second.

My Revised Report Card

“Incomplete” is not a euphemism for failure. It is also not a ceremonial pause before an automatic A.

MercadoLibre has earned the right to invest aggressively because it has repeatedly turned infrastructure into stronger customer behavior. Lower free-shipping thresholds increased purchase frequency. Credit cards deepened engagement. Fulfillment density improved the shopping proposition. Mercado Pago grew from a checkout tool into a financial relationship.

The company has a history of making today's expense look intelligent in retrospect.

My job is not to assume that history repeats indefinitely.

Where I Land

I still own MercadoLibre. I am not adding at this price.

The business is stronger than a 6.7% operating margin makes it look. The margin trend is more serious than 50% revenue growth makes it feel. Both statements belong in the same analysis.

The valuation still leaves meaningful upside to my estimate of fair value, but less than it did when I wrote the previous installment. Importantly, that margin of safety narrowed because the share price rose—not because the central uncertainty disappeared.

Price appreciation is not thesis confirmation. Sometimes it is simply the market charging you more to live with the same unanswered question.

So I am holding, watching Mexico, tracking credit quality, and waiting for MercadoLibre to show that the extraordinary system it is building can retain more of the economics it creates.

The company passed commerce. It passed fintech. It passed credit quality. It passed the test of whether its spending is producing visible operational progress.

But profit conversion remains unfinished.

And report cards become most useful precisely when the student is too talented to grade on effort alone.

Disclosure: I hold a position in MercadoLibre, (currently 11.3% of my personal focused ~Rotation Engine Portfolio~) and I may buy or sell shares without further notice. This article reflects my own research and reasoning and is not financial advice. Do your own research.

Source notes

• MercadoLibre, Q2 2026 shareholder letter and financial results, August 5, 2026.
• MercadoLibre, Q2 2026 earnings call.
• Reuters, “MercadoLibre profit beats forecasts, but third straight decline dents shares,” August 5, 2026.