hbdstabilizer is at the top for buying but not selling because, as shown in your previous post, the HBD supply contracted during the year. So prevailing fundamental forces forced the stabilizer to participate in the buy side of the market, as the main vehicle for contracting HBD supply. During a different period, for example, one where HBD expands as a long term trend, hbdstabilizer would be mostly on the other side.