Interesting to note, how someone stacks their sell order at 27.5 but quickly changes when buying happens at 27.5. Below is the market depth prior to buying.
2 lots of 29,000 are then bought at 27.5 for at total of 58,000 shares
27.5 29000 14:15.14 27.5 29000 14:14.56
Then what happens is that the above sell order for 126863 automatically gets transferred to the back of the line at 27.5 but now has an extra 58,000 shares added on to it to make it 184863. It seems they really dont want to sell but want to give the impression that there is a huge supply at 27.5