'A' a long signal
The commercials are at a maximum long position (highest in three years) and there had been a moderate acceleration of buying in the previous six weeks (a bit less than 30% at the green line at the bottom). A long signal occurred on August 30, 2013, after the previous bearish trend was broken. Holding this long position until the trend ended on October 24, 2013, would have yielded a gain of $2,318 per contract.
'B' a short signal
The commercials are at a maximum short position (lowest in three years) and there had been a high acceleration (above 60% in the green line at the bottom) of selling in the previous six weeks. Shortly after the bullish trend ended, there was a short entry signal on October 28, 2014. Holding that position until the bearish trend ended on January 31, 2014 would have yielded a gain of $4,189 per contract.