Argentina Markets: Merval & the Peso — August 1, 2026

01 The session in one read

Argentina’s stock market ended Friday on a slightly defensive note. The Merval index, which tracks the largest firms trading on the Buenos Aires stock exchange, fell 0.41% to settle at 3,291,323 points. The decline was entirely driven by investors deciding to cash in profits on some of the year’s most beloved bank stocks.

At the same time, the Argentine peso showed a bit of muscle. The official exchange rate closed at 1,485 pesos per US dollar, a small gain of 0.27% for the local currency. It was a mixed bag that tells a clear story: the rally built on President Javier Milei’s pro-market reforms is maturing, and investors are now being pickier about which sectors to back.

Trading was unusually busy, but not because of domestic news. The day’s most-traded instruments were not Argentine companies at all, but local listings of US giants like Amazon and Apple. Their wild swings—Amazon shot up 15.7% after its earnings report—dominated the exchange’s computer screens and likely pulled some attention, and capital, away from local shares.

02 The day’s numbers

The peso’s firmness is the session’s hidden message. The currency is holding within a whisper of its strongest level in a year, a direct result of the central bank’s rigid crawling-peg policy that only allows tiny daily depreciations. For a foreign investor holding Argentine shares in dollar terms, this currency stability is a quiet but crucial tailwind.

The US benchmark S&P 500’s solid 0.70% rise to 7,490 points provided a friendly global atmosphere. With the ‘risk-on’ switch firmly on abroad, Argentina’s mild dip looks especially like an isolated, internal decision to bank some coins rather than any broader emerging-market anxiety.

03 Why it moved — profit-taking meets energy optimism

The Merval’s drop has a clear villain and a clear hero. The villains were the top private banks, Grupo Galicia and Banco Macro, which have been the absolute superstars of President Milei’s reform trade. These lenders have often doubled or tripled in value over the past year on bets that economic liberalisation would reignite credit growth. On Friday, that trade simply took a breather.

Grupo Galicia shares fell 1.6%, making it the biggest single anchor on the index and one of the highest-turnover domestic names at 11 million dollars in volume. There was no bad news; it was just a classic case of month-end book-squaring, where fund managers sell their winners to lock in performance.

The heroes were the energy producers. YPF, the state-controlled oil and gas giant, rose a solid 1.9% with the day’s best domestic turnover at 8 million dollars. Transportadora de Gas del Sur, a key natural gas pipeline company, jumped 2.4% to lead all gainers. Investors are clearly betting that the government’s plan to let oil and fuel prices float freely will enormously boost revenues for these firms, outweighing the short-term profit-taking elsewhere.

04 The day’s movers

The table confirms the session was a tale of two markets. The real liquidity and fireworks were in cross-listed US tech trackers known as CEDEARs. Amazon’s 15.7% post-earnings rocket was the whole story on the volume front, dragging Microsoft and others with it. For an analyst, this means the ‘Argentine market’ today was largely a proxy for Wall Street’s technology sector.

Stripping away the US noise, the local scene was a gentle rotation. Money moved out of the banks—Grupo Galicia’s 1.6% slip on high volume is a clear red flag for short-term momentum—and moved straight into the energy patch. The 2.4% pop in the gas transporter TGS shows the conviction behind energy deregulation is alive and kicking, promising a more balanced market going forward.

05 The regional scoreboard

Argentina found itself in the middle of a fragmented Latin American pack. Colombia’s COLCAP was the star of the region, jumping 2.12% in a powerful rally. Brazil’s Ibovespa also clocked a respectable 0.47% gain, continuing its own rate-cut-fuelled momentum. Argentina’s mild loss meant it underperformed the two regional outperformers.

Mexico’s IPC index suffered the region’s steepest drop, down 0.58%, and Chile’s IPSA barely moved. The lack of a single, regional direction reinforces that these were all homegrown, idiosyncratic sessions. For Argentina, local politics and position-squaring ruled the day, isolating the Merval from the gains seen in Bogotá and São Paulo.

06 The technical picture

The Merval’s pullback to 3,291,323 looks orderly on a chart. After a tremendous run-up for the majority of 2026, a digit-dropping sell-off did not materialise; instead, the market ticked down in a tightly controlled fashion. Technically, the index is building a flag, slowly digesting its gains through time rather than through a painful drop in price.

The peso is an even more striking picture of control. At 1,485 per dollar, it is hugging the strong end of a 52-week range that stretches from 1,292 to 1,500. A clean break below 1,480 on sustained volume would be technically significant, signalling real foreign confidence in Argentina’s managed exchange rate. For now, the chart says calm: the currency is sleepy, and the stock index is pausing to catch its breath after a long run higher.

07 What to watch

• Bank profit-taking: Will the selling in Grupo Galicia and Banco Macro accelerate on Monday, or was it a one-day month-end flush?
• Energy momentum: Keep an eye on YPF and TGS. Continued buying without the help of bank stocks would confirm a broad and healthy rotation.
• Peso’s tight range: If the USD/ARS moves decisively towards the 1,500 ceiling or breaks below 1,480, it would signal a major shift in capital-flow assumptions.
• US tech proxy flows: Watch Amazon and Apple CEDEAR turnover. Their dominance shows that global, not local, catalysts now drive Buenos Aires daily activity.

Background: Argentina’s Central Bank Opens Door to Dollar Payroll Accounts.

Background: IMF’s Georgieva Heads to Argentina: Reserves Yes, Fiscal Doubts.

Frequently Asked Questions

What is the Merval?

The Merval is Argentina’s benchmark stock market index, tracking the most valuable and liquid companies listed on the Buenos Aires Stock Exchange.

Why did the Merval fall on Friday?

It fell 0.41% mainly because investors sold bank shares like Grupo Galicia to lock in profits after a very long rally driven by President Milei’s reform hopes.

What is a CEDEAR?

A CEDEAR is an Argentine certificate that lets local investors buy shares of foreign companies, like Amazon or Apple, using pesos. Their price moves are mostly driven by the US market and the exchange rate.

Why is the peso so stable?

Argentina’s central bank uses a strict ‘crawling peg,’ where it deliberately lets the peso weaken by only tiny, controlled amounts each day to fight inflation.

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