Trail Up is a feature that lifts the lowest buy orders higher to follow an upward trend of a bullish market. Figure 3 shows an illustration of Trail Up. Transitioning between the left-hand side sub-figure (3A) and the middle sub-figure (3B) shows the lowest orders that are lifted higher to accommodate the current price, which is higher than the highest buy order. After the current price slightly drops and matches with the highest buy order, a sell order after Trail Up is placed higher than the current price as shown in Figure 3C.
3A 3B 3C