Nonconvergence
Some exchanges tolerate 'nonconvergence', the failure of futures contracts and the value of the physical commodities they represent to reach the same value on 'contract settlement' day at the designated delivery points. An example of this is the CBOT (Chicago Board of Trade) Soft Red Winter wheat (SRW) futures. SRW futures have settled more than 20ยข apart on settlement day and as much as $1.00 difference between settlement days. Only a few participants holding CBOT SRW futures contracts are qualified by the CBOT to make or receive delivery of commodities to settle futures contracts. Therefore, it's impossible for almost any individual producer to 'hedge' efficiently when relying on the final settlement of a futures contract for SRW. The trend is for the CBOT to continue to restrict those entities that can actually participate in settling commodities contracts to those that can ship or receive large quantities of railroad cars and multiple barges at a few selected sites. The Commodity Futures Trading Commission, which has oversight of the futures market in the United States, has made no comment as to why this trend is allowed to continue since economic theory and CBOT publications maintain that convergence of contracts with the price of the underlying commodity they represent is the basis of integrity for a futures market.
It follows that the function of price discovery, the ability of the markets to discern the appropriate value of a commodity reflecting current conditions, is degraded in relation to the discrepancy in price and the inability of producers to enforce contracts with the commodities they represent.
Read more about this topic: Futures Contract