Brazil's Bovespa stock index .BVSP fell 0.5% and the real BRL= was steady ahead of the country's interest-rate decision at 5:30 p.m. ET (2130 GMT).
The Monetary Policy Committee, Copom, is expected to cut Brazil's Selic benchmark rate by 25 basis points for a fifth straight meeting to 13.75%, according to a Reuters poll.
Central bank watchers will focus on how the committee describes an ongoing economic slowdown as they assess expectations that further easing will follow the presidential election next month.
Data on the day showed economic activity in Brazil fell a seasonally adjusted 0.2% in July from June, compared with expectations for a 0.1% contraction.
Investors were also monitoring the closely contested presidential race, with opinion polls indicating a tight battle between incumbent Luiz Inácio Lula da Silva and challenger Flávio Bolsonaro.
In Colombia, the benchmark COLCAP index .COLCAP declined 2.2% and the peso COP= weakened 0.8%. Central bank board member Olga Lucia Acosta said August's inflation surge warrants a reassessment of monetary-policy tightness, adding that further action is needed to guide prices back toward the long-term target.
Annual inflation rose to 6.24% in August, its highest level in two years and above analysts' forecasts.
Chilean stocks .MICL00000PUS fell 0.8%, while the peso CLP= gained 0.2%. Minutes from the central bank's latest meeting showed policymakers unanimously held the benchmark rate at 4.5% last week, citing unusually high uncertainty.
The Mexican stock market was closed for a holiday.
Key Latin American stock indexes and currencies at 2011 GMT:
| | |
|---|
| Stock indexes | Latest | Daily % change |
| MSCI Emerging Markets .MSCIEF | 1684.04 | 0.19 |
| MSCI LatAm .MILA00000PUS | 3089.37 | -0.78 |
| Brazil Bovespa .BVSP | 185547.66 | -0.51 |
| Mexico IPC .MXX | - | - |
| Argentina MerVal .MERV | 3024637.88 | -1.79 |
| Colombia COLCAP .COLCAP | 2511.76 | -2.16 |
| | |
| Currencies | Latest | Daily % change |
| Brazil real BRL= | 5.1522 | -0.01 |
| Mexico peso MXN= | 17.2433 | -0.6 |
| Chile peso CLP= | 953.92 | 0.19 |
| Colombia peso COP= | 3135 | -0.82 |
| Peru sol PEN= | 3.3564 | -0.04 |
| Argentina peso (interbank) ARS=RASL | 1,512.0 | -0.33 |
| Argentina peso (parallel) ARSB= | 1,540.0 | 1.28 |