
The Central Bank of Brazil cut its Selic rate by 50 basis points to a record low of 5.5% on September 18. The real sold off sharply the next day, and coffee fell about 1.5%.
A weaker real makes Brazilian exports cheaper in dollar terms, which tends to support export selling of soybeans, soymeal and other commodities. Lower Brazilian rates can also pressure the currency and push USD/BRL higher.
After 301 past bullish macro events, Brazilian Real (BRL per USD) moved a median +0.4% over 5 sessions (57% higher; middle half -1.2% to +1.7%), and +1.0% over 20.
Moves of each commodity's benchmark from the last close before the event. Historical reads pool past events of the same kind; they describe what happened, not what will. Not investment advice.