
The State Bank of Vietnam set the reference exchange rate at 22,475 VND per USD on April 9, down 2 dong from April 6. The trading band of plus or minus 3 percent gives a ceiling of 23,153 and a floor of 21,709.
Opening rates at major commercial banks were mixed.
The move is marginal and stays well inside the managed band, so it has little effect on Vietnamese feed import costs. A slightly firmer dong marginally lowers the local-currency cost of dollar-priced feed ingredients such as US corn and soymeal.
Not enough comparable past events yet for a historical read.
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.