'A' a short signal
The commercials are at a maximum short position (longest in three years) and their acceleration of trading activity over the previous six weeks is very high (over 50% in the green line at the botton). Entering short on March 28, 2013, soon after the previous bullish trend was broken and holding that position until this bearish trend ended on June 3, 2013, would have yielded a gain of $3,780 per contract.
'B' a long signal
The commericals are at an almost maximum long position and the commercials' activity in the last six weeks has accelerated to a high level (about 40% in the green line at the bottom). Shortly after the bearish trend ended, there was a long entry on January 28, 2015. Holding that position until the bullish trend ended on February 27, 2015 would have yielded a gain of $2,040 per contract.