Corn and Soybeans Need Different Storage Strategies, 40 Years of Data Show

Corn vs. Soybeans: Why One Storage Strategy Won't Fit Both

US grain growers have no shortage of post-harvest marketing tools — selling off the combine, filling the on-farm bin, hedging with futures or using options. The hard part is matching the tool to the crop. A new Farm Futures Storage Strategies Study, covering crop years back to 1985 — when agricultural options trading resumed after a roughly 50-year ban — argues that corn and soybeans behave so differently after harvest that no single storage formula can serve both.

On-farm storage was, on average, the most profitable route for either crop, because prices typically firm once harvest pressure lifts. But the payoff gap is wide. On-farm soybean storage returned more than the harvest price in two of every three years — the best record of the nine strategies tested — and storing the 2025 soybean crop added 88 cents a bushel, 35 cents better than the next-best tactic. The same approach on 2025 corn lost 12 cents a bushel, before accounting for facility depreciation.

The divergence comes down to market structure. Corn futures build carrying charges deep into the crop year, which makes a hedge against stored inventory through July futures attractive. Soybean futures do not: the market wants the crop moved fairly quickly after harvest, before a new wave of South American supply reaches world markets. That timing difference, along with local basis patterns and end-user demand, determines which strategy fits which crop — and why one-size-fits-all marketing usually fails somewhere.

All results in the study are hypothetical, calculated from official Chicago Board of Trade settlement prices, with a few dates estimated using a widely followed options model. And, as the analysts themselves stress, four decades of history is no guarantee of next season's outcome.

What Four Decades of CBOT Data Say About Post-Harvest Storage

What Four Decades of CBOT Data Say

The study measured nine post-harvest tactics for each crop — cash sales at harvest, on-farm storage, commercial storage, short futures hedges, long futures replacements, and call and put strategies — using July contract settlement prices. The standout average performer was simply keeping grain in the bin: on-farm storage netted more than the harvest price for soybeans in two of every three years, the strongest hit rate of any method. Commercial storage fared far worse, eating into soybean profits and leaving corn at little more than breakeven.

Averages, however, hide the year-to-year swings that actually decide farm income. The 2025 soybean crop earned 88 cents a bushel in storage, while the same tactic on corn lost 12 cents. The lesson cuts both ways: a strategy that looks reliable across 40 years can fail in an individual season.

Why Corn Builds Carry and Soybeans Refuse To

Futures carry is the mechanical core of every storage decision. When later delivery is priced higher, a grower can store grain and sell July futures, profiting if futures fall or if basis — the gap between cash and futures — narrows enough to open bin doors. Corn reliably offers that setup: short July futures as a storage hedge beat the harvest price in roughly three of every four years since 1985. Soybeans move on a different clock. The market declines to build carry all the way to July because it wants inventory shifted before South American supply arrives, so the same hedge averaged a penny below the harvest price, even after gaining in 25 of the past 40 years. The 2025 corn crop was the exception that proved the rule: futures rose faster than cash, the storage hedge lost, and the only strategy in the black was selling grain off the combine and buying it back on the board.

Why Protected Storage Beat Call Buying on Both Crops

Options give growers two ways to stay in the market after fixing a price. Buying calls is the lottery ticket: at-the-money calls captured roughly half of the gains of the underlying July futures on average, but they beat a plain harvest sale less than half the time. The steadier approach was the mirror image — store the grain, buy a put, and let the position act as a synthetic call. Because that structure posted average gains on both the futures and the basis side, it outperformed outright call buying on corn and soybeans alike.

Building a Storage Plan for the Next Crop

For growers mapping out the next post-harvest plan, the historical record argues for treating corn and soybeans as two separate marketing decisions:

• Soybeans: on-farm storage is the highest-probability play on record. It beat the harvest price in two of every three years since 1985 and added 88 cents a bushel on the 2025 crop — 35 cents more than the next-best strategy. Because soybean basis gains tend to arrive early, plan to move stored beans well before South American supply pressures the market.
• Corn: hedge stored inventory with July futures. That tactic outperformed the harvest price in roughly three of four years since 1985, the most consistent record of any corn strategy. The 2025 season was the exception — futures outran cash, so the winning 2025 play was selling at harvest and replacing the grain with long futures, the only strategy that finished in the black.
• For rally exposure, put-protected storage beat call buying on both crops on average, because it captured gains on futures and basis together. If you prefer calls, expect at-the-money calls to capture about half of a July futures rally — and to beat a harvest sale less than half the time.
• Recalculate for your own basis and costs. The study uses CBOT settlement prices and excludes on-farm facility depreciation, which varies widely. Local basis patterns and end-user demand can flip which strategy wins on a specific farm.