This was not a question and let me give the possible reason. There is no major negative news and thus it is not because of it. There are next gen of ASCIs which had made mining easier. These are being tested by some pools and cost of mining btc is reduced because of this. They can thus sell for less and thus prices have reduced.
I think this is not the right reason for it
As far as We know that mining tools continue to grow, the new product come with greater specifications but until now it is not a problem because Bitcoin mining difficulties also continue to grow and not all miners make sales when they get mining results