Think off it as a box of apples.. say Ryan has 20 apples in his box and wants to sell them, and jack wants 2 apples at $4 (so she puts out a bid at 4.00)an apple and jill wants 3 apples at 3.75 (so he bids ) and peter want 3 apples at 3.65 (so he bids) and tom want 2 apples at 3.50 (s0 he bids)... But Ryan decided to sell his apples no lower than $2.00.. So he puts a limit order to sell them at 2.00 .. Well than Jack Jill Peter and Tom all get bid orders filled, but Ryan still has 10 Apples in his box, for sale at 2.00.. Ryan now sitting on the ask, and he is the low of the day.. He is asking $2.00 still for his apples.. but at $2.00 people are going to come in quick and buy up his ask