What you see , whats happening and whats going to happen is some powerful people plans, all forks (BCH , BTG , Segwit , Segwit2x) all are planed , and we all are plaything for few people that making their money thousand times more. I am not telling this emotionally but we really know who makes the real profit.
Don't trade emotionally. all the altcoins are oversold because people sold all they had to buy BTC to get free BTG, but who knows maybe BTG is just a scam so few people make a good profit of this opportunity (buying BTC on -3000$ and selling on +6200$ only in one month).
after all , it is obvious right after BTG fork people will sell their BTC and BTG to buy altcoins like (NEO , OMG , LTC , DASH , Zcash) because who does not like OMG for 7$ which the real price is + 9$ or all the coins that i told above.