Pump and dump are very natural in the crypto world. you don't need to be panic. if you are a long term investor of ethereum plz don't panic. because its the queen of the altcoin.just add more ethereum when it dump
personally I like ethereum. of course I am holding a few there and trying to add more ethereum when it dump more.my first target for ethereum is $500 and 2nd target is $600 per ethereum.so before $400 ethereum is bless for mine