Latin American FX: Real, Peso and Andean Currencies — 2026-10-30
Brazil’s real and Mexico’s peso faced significant volatility this week following Lula’s election and the US Federal Reserve’s rate hold. While Brazil saw a sharp depreciation and central bank intervention, Mexico’s peso hit a one-year low, and Argentina’s blue dollar gap remained minimal.
Latin American FX: Real, Peso and Andean Currencies — 2026-10-30
Top developments
Brazil’s Real Weakens as Ibovespa Falls Four Days Straight
On October 29, Brazil’s Ibovespa index fell 1.06% to 169,186, marking a fourth consecutive day of losses, while the real weakened to R$5.38 per US dollar. By October 30, reports indicated the real trading near R$5.40, driven by fiscal uncertainties and the market pricing in a potential pause in Selic rate cuts. The currency’s slide has led traders to expect a hold on the Selic rate at the November 4 meeting, rather than continued cuts.
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Mexican Peso Hits One-Year Low After Fed Hold
The Mexican peso depreciated significantly on October 29, closing at 18.87 per US dollar, its weakest close in over a year. The currency lost 21 centavos, or roughly 1.12%, as markets adjusted to the Federal Reserve’s decision to hold rates at 3.75%-4.00% and increased expectations for a hike in December. Analysts note that the peso’s weakness is amplified by a widening yield gap, with Banxico expected to keep rates on hold through 2026.
Argentina’s Blue Dollar Gap Narrows to Minimal Levels
In a stark contrast to previous volatility, Argentina’s blue dollar closed at $1,565 on October 30, just $5 above the official rate of $1,560. This near-zero brecha suggests a stabilization in the parallel market despite ongoing inflation concerns. The Central Bank of Argentina (BCRA) continued accumulating reserves, purchasing $47 million on October 29, bringing total reserves to approximately $50 billion.
Local view
Brazil: Fiscal Anxiety Drives Market Panic Local media outlets like O Globo and G1 reported that the Central Bank of Brazil (BCB) injected $3.75 billion into the futures market on October 26 to stem the real’s depreciation, which spiked 8.21% in a single day—the largest daily gain since 1999. InfoMoney highlights that economists now view the currency pressure as a primary factor that could force the Copom (Monetary Policy Committee) to adopt a more cautious stance on future rate cuts.
Mexico: Peso Under Pressure from US Rates El Economista and El Financiero emphasize that the peso’s decline is directly linked to US inflation data and the Fed’s hawkish signals. El Financiero noted that the peso was one of the most depreciated currencies globally against the dollar this week, with specialists warning that a December hike in US rates could further pressure the MXN if Banxico does not follow suit.
Context & numbers
- Brazil (BRL): Closed near R$5.38–R$5.40. The BCB conducted swap auctions of up to $4 billion to roll over contracts expiring in November.
- Mexico (MXN): Closed at 18.87 per USD on Oct 29. The IPC stock index rose 0.87% to 69,787, showing a divergence between equity and currency performance.
- Argentina (ARS): Official rate at $1,560; Blue rate at $1,565. The gap is effectively below 1%.
- Carry Trade Rankings: Recent data places Colombia in first place for carry trade attractiveness (~30%), followed by Brazil (~20%) and Argentina (~19%). Mexico’s yield advantage is significantly lower at ~3%.
On the radar
- Brazil Copom Meeting (Nov 4): Markets are heavily positioned for a pause in rate cuts as the real stabilizes above R$5.35.
- US Fed December Meeting: Mexican peso traders are watching for signals on a potential 25 basis point hike, which would widen the interest rate differential with Banxico.
- Argentine Reserves: The BCRA’s ability to continue accumulating dollars while keeping the blue dollar gap minimal will be a key indicator of the program's sustainability.
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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