Right now all alts will go down because of bigger traders and whales spot that Bitcoin price has a momentum and it will increase, so they taking this opportunity and quick sell all alts they can. Most of the time is related BTC (up) - ALTS (down), sell quickly you portfolio and buy BTC, in other words, catch the train when price is still rising, this will cause alts price to drop and will help Bitcoin price rise as well, once Bitcoin price is significantly higher (enough profit - dump) sell BTC on first sign it will drop in value and enjoy profit!