
The peso closed at 18.71 per dollar on October 22, its weakest level since September 2025, down about 9.7% since early September. The decline is attributed to the narrowing Fed-Banxico rate gap, risk aversion tied to the US-Iran war, and USMCA uncertainty.
A weaker peso makes Mexican imports of US feed grains and meal more expensive in local currency, which can dampen demand at the margin and weigh on US export prices.
Not enough comparable past events yet for a historical read.
After 301 past bearish macro events, CORN moved a median -0.1% over 5 sessions (47% higher; middle half -2.2% to +1.3%), and +0.2% 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.