Bitcoin price movements are generally able to influence Altcoin prices. The relationship is not always predictable. However, it should be noted that every event in the future is not necessarily the same as the conditions in the past, and anything can happen. In this case I think bitcoin prices are falling, while altcoin prices are rising because they are affected by highly anticipated forks, the possibilities that will occur is altcoins are depressed as a result of money flowing into fiat, which causes the altcoins to experience unexpected booms; especially in the BTC pair, because money flows to Altcoins through BTC sales. Hope you can help.!