As Dr Dann said $1.40 is the current hurdle before it should...

As Dr Dann said $1.40 is the current hurdle before it should continue on its merry way. Support has been well tested at $1.35 and the last 2 days have seen continued support at $1.38 to $1.39. Maybe that $1.40 will be tested tomorrow but there are some big sellers wanting to take profit at that level, one in particular for 500,000 odd shares. Can someone tell me why someone would put such a large sell order for all to see?