Or for reasonable reason , maybe like China decide to ban bitcoin also affect bitcoin globally but as long as you believe bitcoin, no need to do panic sell, Just hold it !
Since this thread is open in the last week to know about the dump happend because of the hard fork and segwit2x. I see many people are saying that bitcoin dumping is the reason. If the regular people hold the bitcoin we will find the demand in the market about bitcoin. Henceforth, its value will increase enormously to sky rocket.
I do not know why mentioned Chinese BTC and ICO ban and all because that is happened more than a 50 days ago. You simply saying a dead news.