
The euro fell sharply against the dollar on December 9 after the ECB extended its bond-buying programme through at least end-2017, with the monthly purchase amount reduced. The euro's biggest daily loss against the dollar since Brexit followed, trading near $1.0563.
A weaker euro makes US-priced commodities like corn and soybeans more expensive for European buyers and tends to lift dollar-denominated grain prices relative to euro-based demand; a stronger dollar typically pressures US commodity prices.
After 533 past bearish macro events, Euro (USD per EUR) moved a median -0.3% over 5 sessions (33% higher; middle half -1.2% to +0.2%), and -0.5% over 20.
After 2,356 past bullish macro events, US Dollar (Broad) moved a median +0.2% over 5 sessions (60% higher; middle half -0.3% to +0.7%), and +0.4% 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.