Copper is forming an ending diagonal on the daily chart.In the last trading session, the metal has closed above the upper end of the pattern as well as above its 50DEMA. The daily MACD has formed a higher top-higher bottom, which has been reflected in the price as well. The red metal will now attempt for the equality target with the previous up-leg. The level coincides with the swing high of $3.18. On the downside, the reversal can be trailed to the swing low i.e. $2.84.