Oats

Oats are the smallest of the cereals that still has a real futures contract. World production runs around 22 to 23 million tonnes a year, roughly one fiftieth of the corn crop and about three percent of wheat, and it is a high-latitude map: the European Union as a bloc, then Canada, Russia, Australia, Brazil, the United Kingdom, and the northern edge of the United States. Oats want a cool, damp summer, tolerate poor and acid soils, need less nitrogen than corn or wheat, and ripen fast, which is why they persist where the season is short and why the crop is grown as much for what it does to a rotation as for the grain cheque.

The defining fact about oats is that the market lost its customer. Oats were the fuel of the animal-powered economy, the grain that fed the horses and mules that pulled the plows and the city drays, and US area peaked at 45.5 million acres in 1921, within a few years of the peak American horse herd. The internal combustion engine took the demand away. Nothing about the plant failed; the buyer simply disappeared. By 2021 the United States harvested oats for grain on well under a million acres and imported more than 90 percent of the oats its mills ground, almost all of it from Canada. It is the clearest case in the whole grain complex of a crop displaced by a technology rather than by agronomy or taste.

What survived is a market that runs in two directions at once. Globally the crop is still mostly animal feed, particularly in Russia and much of the EU, where oats go to livestock and horses. In the United States the split is inverted: USDA's 2024/25 balance sheet puts domestic use at roughly three quarters food, seed, and industrial and one quarter feed and residual, because the American feed base died with the horses while the milling demand for rolled oats, oat flour, and oat bran did not. That milling demand has a regulatory tailwind behind it. In 1997 the FDA granted soluble fibre from whole oats the first health claim it had ever awarded to a specific food rather than to a nutrient, on the strength of beta-glucan and cholesterol, with a threshold of 3 grams a day. The claim was later extended to barley and other soluble fibres through rules in 2002, 2005, and 2008.

The newest buyer is oat milk, and it is worth being precise about its size. Oat drink took share aggressively inside the plant-milk aisle, rising from roughly 18 percent of US retail plant-based milk in 2021 to about 24 percent in 2023, and it was widely blamed for tightening the oat balance during the 2021 squeeze. But a carton is mostly water: oat milk is on the order of ten percent oats by weight, so even a multi-billion-dollar beverage category is the marginal buyer of the crop, not the main one. The category's standard bearer made the point painfully. Oatly listed on Nasdaq on May 20, 2021, selling 84.4 million ADSs at $17 to raise $1.4 billion at a valuation near $10 billion, with Blackstone and Oprah Winfrey among the backers, and then lost about 97 percent of its value, taking a 20-for-1 reverse split in February 2025 to hold its listing. The category worked. The company did not. The crop barely noticed either way.

Two arguments follow oats onto the supermarket shelf. The first is gluten. Oats contain no wheat gluten, only a related protein called avenin, but they are grown, harvested, and stored on the same equipment as wheat and barley, so cross-contact rather than the plant itself is the usual problem; separately, something like 8 to 12 percent of coeliac patients react to avenin even in clean oats. The US "gluten-free" label means below 20 parts per million and is self-declared unless a certification mark is present, and "purity protocol", the term for oats grown on dedicated wheat-free land and equipment, has no legal definition at all. The second is glyphosate, sprayed pre-harvest as a desiccant to dry an uneven crop in the damp Canadian Prairies. The Environmental Working Group found residues in nearly all of 45 conventional oat products it tested in 2018, measured against its own 160 parts-per-billion child-health benchmark; every result was far below the EPA tolerance of 30 parts per million, so the fight is about whether that tolerance is protective, not about whether anyone broke a rule. EWG's own 2023 retest found residues had fallen sharply, which says the buyers quietly changed their sourcing.

For a trader the point about oats is liquidity, or the absence of it. The CBOT oat contract is one of the exchange's founding grains and is now comfortably the smallest in the complex: open interest of a few thousand lots against roughly 630,000 in corn, and daily volume measured in hundreds of contracts rather than hundreds of thousands. The entire open interest of the oat market is worth on the order of 60 million dollars, less than a single day's turnover in most listed commodities. That thinness is not a footnote, it is the market's main risk. When the 2021 Canadian Prairie drought cut supply by roughly a tenth and buyers had already contracted 60 to 80 percent of their needs at pre-drought prices, the entire shortfall had to clear in the residual, and the spot price went from $3.56 a bushel in May 2021 to $7.65 in November, then to a record near $8.00 in April 2022. It has since round-tripped the whole move. Oats is the textbook illustration of what a small physical shortage does to a market with no speculative depth underneath it.