Quote from spersky:
Can you explain to me why the soy bean spread works like that? Is it harvest related?
July is considered "old" crop and November is considered "new" crop. A large part of farmer selling occurs during the winter months and drives prices down. The idea is that supplies of old crop beans dwindle as spring approaches and the thus the July contract becomes more valuable. The November contract does not keep pace since the market expects to have fresh supply coming in from the harvest of new crop beans in October/November. Historically old crop beans will peak around May 15 and then again around July 4th and then there will be a frost scare in September driving prices up that month just prior to a final downturn. In any event, the July contract will tend lose ground to the November contract after May 15 , when new crop scares may carry a premium in the November contract. To look at the seasonality of beans, pull up a Soybean perpetual chart and you can see it. Look at Summer 2004 and see the massive amount of money that could have been made on the downside. You can see the frost scare bounce as well. There is also a well known "February break" each year prior to the beginning of a rally towards May.