Latin American FX: Real, Peso and Andean Currencies — 2026-10-12
Brazil’s real surged following the first-round election results, with the dollar falling 4.6% to near R$5.00, while the Mexican peso depreciated to a 10-month low of 18.40 per dollar due to US rate expectations. In Argentina, the gap between the official and blue dollar narrowed significantly as the BCRA accelerated reserve purchases. <!-- /headline --> **Brazil Real Soars on Election Upset; Mexican Peso Hits 10-Month Low** <!-- /headline -->
Latin American FX: Real, Peso and Andean Currencies — 2026-10-12
Brazil’s real surged following the first-round election results, with the dollar falling 4.6% to near R$5.00, while the Mexican peso depreciated to a 10-month low of 18.40 per dollar due to US rate expectations. In Argentina, the gap between the official and blue dollar narrowed significantly as the BCRA accelerated reserve purchases.
<!-- /headline -->Brazil Real Soars on Election Upset; Mexican Peso Hits 10-Month Low
<!-- /headline -->Top developments
Brazil: Real rallies 4.6% post-election, dollar hits R$5.00
On October 5, the Brazilian real appreciated sharply after Senator Flávio Bolsonaro led the first round of presidential elections, reducing political risk premiums for markets. The dollar fell 4.6% against the real, closing at R$5.0022, while the Ibovespa stock index jumped 7.7% to a record high of 206,912 points. This move reflects market anticipation of pro-market reforms and fiscal tightening under a Bolsonaro-led runoff scenario, boosting carry trade appeal for the BRL.
Mexico: Peso slips to 10-month low amid Fed caution
The Mexican peso weakened to 18.4072 per dollar on October 9, marking its lowest level since November 2025 and accumulating a 9% depreciation over five consecutive weeks of losses. The decline is driven by "cautious" monetary policy signals from Banxico and rising US Treasury yields, which have reduced the relative attractiveness of MXN carry trades. Analysts note that despite the peso's historical resilience, the divergence in rate expectations between the Fed and Banxico is pressuring the currency.
Argentina: Blue dollar gap narrows as BCRA buys reserves
The Argentine blue dollar recorded its largest weekly drop in two months, falling $20 to close near parity with the official retail rate at Banco Nación ($1,540 official vs. $1,550 blue on Oct 5). The Central Bank of Argentina (BCRA) accelerated dollar purchases, adding $69 million on Friday to reach nearly USD 15 billion accumulated in 2026, with gross reserves surpassing $48.6 billion. This narrowing gap suggests improved market confidence in the official exchange rate band policy.
Local view
- Forbes Brasil reports that the dollar's crash below R$5.00 reflects a significant reduction in the "political risk premium," though experts warn that volatility remains high ahead of the runoff.
- El Financiero (Mexico) highlights that the peso's depreciation to 18.40 is driven by a combination of Fed hawkishness and local inflation data, with investors now pricing in fewer Banxico cuts than previously expected.
- Ámbito Financiero (Argentina) notes that the convergence of the blue and official dollar rates is a key indicator of the success of the current "exchange rate band" strategy, reducing speculative pressure.
Context & numbers
- USD/BRL: Fell from ~R$5.25 to R$5.0022 on Oct 5; traded around R$5.02 on Oct 8.
- USD/MXN: Weakened to 18.4072 on Oct 9; Banxico fixed rate was 18.1343 on Oct 5.
- ARS Official/Blue: Official sale rate $1,540; Blue rate $1,550 (Oct 5); Blue dropped to $1,520-$1,540 range by Oct 11.
- BCRA Reserves: Gross reserves exceeded US$48.6 billion; YTD purchases ~US$15 billion.
On the radar
- US CPI Release (Oct 14): September US inflation data is due, forecasted at 3.6% headline. A higher-than-expected number could strengthen the dollar further, putting renewed pressure on the MXN and COP.
- Brazil Runoff Anxiety: Market sentiment remains volatile as Brazil heads toward the October 27 runoff; any polling shifts could trigger immediate FX swings.
- Holiday Closures: Monday, October 12, is a holiday in Brazil, Argentina, and Chile, limiting liquidity and price discovery in these major LatAm markets.
This content was collected, curated, and summarized entirely by AI — including how and what to gather. It may contain inaccuracies. Crew does not guarantee the accuracy of any information presented here. Always verify facts on your own before acting on them. Crew assumes no legal liability for any consequences arising from reliance on this content.
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