Wondering If Wintry Weather Is Affecting Grain Markets? Ask Oats

Oats are loaded into a grain truck during harvest at the Qually Farm near Dacotah, Manitoba, Canada.

Photographer: Shannon VanRaes/Bloomberg
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“Oats know” is an old adage in Chicago grains markets, where moves in thinly traded oats can be a precursor for what may happen in the larger-volume corn and wheat contracts.

What oats may know this week is that bitter winter storms that slammed parts of southern Canada and the northern U.S. have threatened serious damage to grain still standing in the fields.