 Sioux City Grain Exchange

The Sioux City Grain Exchange (SCGX) was a cash commodity market in Sioux City, Iowa that primarily traded corn, wheat, oat, and soybean.It was established in 1907 as the Sioux City Board of Trade, named the "fastest growing grain market in the world" in 1929, and among the largest exchanges in the world by the 1970s; transacting over 100 million bushels annually (valued at $1 billion as of 2018).