Brock Associates owner and market analyst Richard Brock says it makes sense for the grain markets to move higher in response to the lower-than-expected yield estimates from the USDA. Brock highlights the corn markets. “People need to tone down the bullishness. This is a rally to do some catch up selling on. It depends where the producer lives. If you’re in the Dakotas and Minnesota, you are probably still concerned about the crop. All you can do is sit and wait.”