Here is the graph of the Soybean daily movement.  As I turn my strategy into mainly focus on Short-term speculation, I focus more on technical analysis.

Seeing from the graph, Soybean fulctuate between $1527 and $1575 during the past two week.  Of course, Soybean is a substitute of corn.   The performance is soybean are influence by the performance of Corn.

Seeing from the graph, Corn are trying to break the pressure line at around $770 for four times.  It is highly unlikely that corn price will breakthrough this limitation in the near future. This trend will continue influence the performance of soybean.

In a long term perspective, here is the performance Weekly movement. 

It is very clear, there is not neck and shoulder between June and Oct.  Compared to the previous year, it is clear that the soybean price will handing to the south until Dec.

Thus, I will probably go short on corn and Soybean, again. If the price break the $1490 next week. It is a strong sign of go short in the future.