Brazil's central bank announced daily traditional currency swap auctions starting September 29 to roll over $15.2 billion in swaps maturing November 1. The bank said auctions would continue until the expiring stock is fully renewed.
This is a routine liquidity operation that supports FX market stability and does not change the underlying supply of dollars for trade. It has little direct effect on feed commodity prices.
After 36 past policy events, Brazilian Real (BRL per USD) moved a median -0.5% over 5 sessions (44% higher; middle half -2.8% to +1.6%), and -0.3% 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.