Is it possible that the whales, miners and schemers who are against Segwit BIP141 and BIP148-UASF are dumping? Yes that means Roger Ver, Jihan Wu and their gang. What scheme are the planning?
Actually, they are not dumping, but there are a lot of sources claiming that bitcoin will drop in value very fast after it's split, so it makes people feel very nervous, and they accept it. Sell it at low prices to minimize damage.