Argentina Markets: Merval & the Peso — July 30, 2026

01 The session in one read

The S&P Merval — Argentina’s main stock index, which tracks the biggest companies listed on the Buenos Aires exchange — closed at 3,233,105 points on Wednesday, down 0.71% from the previous session. The fall had little to do with Buenos Aires and everything to do with a sharp technology sell-off that swept through Wall Street, where the benchmark S&P 500 dropped 1.52%.

The pain travelled to Argentina through CEDEARs, which are peso-denominated certificates that represent shares in US companies and often dominate the local exchange’s trading volumes. Nvidia’s CEDEAR crashed 4.0% on turnover of $6 million, the single most damaging blow of the day.

Apple and Microsoft trackers also lost ground, but the real domestic story was one of quiet resilience: energy producer YPF managed a 0.3% gain, while the peso firmed 0.28% to 1,496 per dollar, staying inside the narrow managed band the central bank has defended since President Javier Milei took office in December 2023.

The session felt like a passing storm — imported turbulence that tested the local market’s recent strength without breaking it.

02 The day’s numbers

The Merval’s 0.71% decline to 3,233,105 does not yet threaten the index’s medium-term uptrend, which has been driven by the Milei reform trade — the investor bet that deregulation, fiscal tightening and eventual currency liberalisation will unlock value in Argentine assets. The session range is not available from the verified scan.

The Argentine peso, quoted here at the official wholesale rate of 1,496 per dollar, strengthened 0.28% on the day. That puts the currency just 0.3% below its 52-week high of 1,500, a level that has served as a soft ceiling under the central bank’s crawling-peg policy. The 52-week low stands at 1,292 per dollar.

03 Why it moved — global tech rout meets local rotation

Wednesday’s dominant force was a rotation out of technology stocks on Wall Street, where the S&P 500 fell 1.52%. The move was particularly fierce in the semiconductor and artificial-intelligence names that had led the market higher earlier in 2026, with Nvidia’s US-listed shares taking heavy fire.

In Buenos Aires, that translated directly into losses for the CEDEAR versions of those same stocks. Nvidia’s local tracker fell 4.0% on $6 million of turnover, Microsoft shed 1.1% on $6 million, and the SPY fund — a tracker of the S&P 500 itself — dropped 2.2% on $4 million. Because CEDEARs account for a large share of daily BYMA volume, their declines pulled the headline Merval lower even though most purely domestic names held up reasonably well.

Beneath the global noise, there was evidence of a modest rotation into Argentina’s hard-asset stories. YPF, the country’s largest oil-and-gas company and its main vehicle for developing the vast Vaca Muerta shale formation, eked out a 0.3% gain on $9 million of volume, making it the second most-traded name of the day.

The banking and utility sectors, which had rallied strongly in recent weeks on optimism about Milei’s deregulation push, saw some gentle profit-taking. Grupo Galicia, one of Argentina’s largest private financial groups, fell 0.8% on $9 million traded, while Pampa Energía — a bellwether for electricity-tariff normalisation hopes — slipped 1.5%, the worst performance among domestic names.

04 The day’s movers

The session’s turnover table tells a clear story: four of the six most-traded names were CEDEARs tracking US stocks — Nvidia, Microsoft, Google’s parent Alphabet and the S&P 500 SPY tracker. Together they accounted for $20 million of the reported volume, and every single one fell. Nvidia’s 4.0% plunge was the standout blow, reflecting the fierce rotation out of semiconductor shares on Wall Street.

Among genuine Argentine companies, the picture was more nuanced. YPF’s 0.3% gain on $9 million of turnover suggests that institutional investors still have appetite for the Vaca Muerta shale story, even on a down day. Grupo Galicia’s 0.8% dip on matching $9 million volume was mild by comparison, while Pampa Energía’s 1.5% slide — the poorest domestic showing — looked like simple profit-taking after a strong run. The cross-listed CEDEARs for MercadoLibre and Berkshire Hathaway also slipped, but their moves largely reflected currency and the US tape rather than any Argentina-specific news.

05 The regional scoreboard

Wednesday was a broadly negative day for Latin American equities, with the two largest markets — Brazil and Mexico — suffering the deepest losses. Brazil’s Ibovespa, its main stock index quoted in reais, fell 1.52%, matching the decline on Wall Street’s S&P 500 tick for tick. Mexico’s IPC, the benchmark for the country’s largest and most-liquid shares, dropped 1.23%.

Chile and Colombia bucked the trend, albeit modestly. Chile’s IPSA — which tracks the 30 most-traded names on the Santiago exchange — added 0.52%, while Colombia’s COLCAP edged 0.15% higher. Argentina’s 0.71% decline placed it in the middle of the regional pack, faring better than Brazil and Mexico but worse than the Andean markets. The live market board above carries the latest closes for all regional indices.

06 The technical picture

The S&P Merval’s 0.71% decline to 3,233,105 leaves the index in a consolidation phase after a powerful rally driven by the Milei reform trade. From a chart-watcher’s perspective, the 3,100,000 level represents a psychologically important support — a round number where buyers have stepped in during past pullbacks. A close below that threshold would signal a deeper correction is underway.

The index is trading well above its recent lows but remains some distance from its all-time highs. The 52-week positioning data from the verified scan does not provide exact levels for the Merval, so precise percentage distances cannot be confirmed here.

The currency picture offers a clearer signal. The peso at 1,496 per dollar is hugging the top of its 52-week range, just 0.3% below the 1,500 ceiling. That tight band is by design: the Milei administration’s economic team has used a crawling peg — a system where the central bank allows the peso to depreciate at a controlled, predictable pace — to anchor inflation expectations. As long as the 1,500 level holds, the FX backdrop remains supportive for peso-denominated equities.

For traders watching the interplay between Buenos Aires and Wall Street, Wednesday’s session underscored an old truth: when the US sneezes, Argentina’s CEDEAR-heavy board catches a cold. The Merval’s near-term direction will depend heavily on whether the tech sell-off on Wall Street deepens or fades.

07 What to watch

• US tech sector momentum: whether Wednesday’s rotation out of Nvidia and other AI names accelerates into a broader correction — the Merval’s CEDEAR exposure means Buenos Aires will follow Wall Street down
• Argentina country risk: the sovereign bond spread over US Treasuries remains the single best barometer of investor confidence in the Milei reform programme — a widening would hit bank stocks like Galicia and Macro first
• Central bank crawling peg: the 1,500-per-dollar level is a soft ceiling; any break higher would signal a policy shift that could rattle the local equity market’s inflation assumptions
• Vaca Muerta production data: YPF’s ability to hold gains on down days suggests energy is the market’s favourite domestic sector — monthly shale output figures will either validate or undermine that confidence

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 S&P Merval?

It is Argentina’s main stock-market index, tracking the largest and most-traded companies listed on the Buenos Aires exchange (BYMA). It is quoted in Argentine pesos and is the headline barometer of Argentine equity risk.

What are CEDEARs and why do they matter?

CEDEARs are peso-denominated certificates that track US shares — like Nvidia, Apple or the S&P 500 itself — and trade on the Buenos Aires exchange. They often account for the bulk of daily volume, so a big move on Wall Street directly moves the Argentine market.

Why did the peso strengthen when stocks fell?

The official exchange rate is managed by Argentina’s central bank through a crawling peg, so the peso’s 0.28% firming to 1,496 was part of the controlled policy rather than a market-driven move linked to equities.

What is the Milei reform trade?

It is the investor bet that President Javier Milei’s programme of deregulation, fiscal austerity and eventual currency liberalisation will unlock long-suppressed value in Argentine banks, energy companies and utilities — making their shares worth more over time.

This article was produced by The Rio Times’ automated newsroom system. How we use AI · Report an error

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