Been looking at the order market depth books and seems that people got front run who wanted to buy in the $7500 area. It's very clear on Bitmex that people were either looking to long there or shorts looking to close there. Reason why the $7500 area was important is because it's an important psychological number and it was resistance during the rally and was strong support during the dip afterwards, people were expecting a quadruple type of bottom I guess.

And what happened was price came close, rally happened and now those orders were moved up all of a sudden. This is why when trading crypto you need to be careful of those simple common support and resistance areas since most traders are looking at the same thing. People were expecting $9000 to be support also but look what happened instead.