As harvest approaches, many factors go into the decisions for bushels not priced before harvest and 2021 has very unique factors that should be considered.  In addition to basis vs. history, the carrying charge offered by the market and other factors, a historical look at the interaction between the volume of crop marketed and the price is worthwhile background for the decision.

A short 16 minute recorded presentation is a good primer for many of the factors to recognize as harvest approaches and is linked at this site: