Commercial corporations in the context of trading refer to companies that participate in futures and commodity markets primarily to hedge their business operations rather than for speculation. They use derivatives to manage price risk related to raw materials, currencies, or other inputs crucial to their core business. In the COT report, commercial positions are often viewed as 'smart money' because these companies have deep knowledge of their respective markets.
Example
“An airline company acting as a commercial corporation hedged its fuel costs by purchasing crude oil futures contracts.”