55k Bitcoin in a short position ? Holy mother.. 
55k contracts. IE $5,5000,000 which is 5.5k BTC and he's probably using 10x leverage so 5.5k/10 = 550
550 bitcoin short
And the worst part is that if we cross the 1150$ he'll lose everything Oo
You imagine that? Seeing 500k$... Disappearing...
The guys must be like a crazy bitch in front of his computer!!! Refreshing the chart every 2 seconds xD