Since Bitcoin is the King's currency, all alternative currencies follow Bitcoin, because alternative currencies have no life of their own, if Bitcoin goes up, the immediate effect is that alternative currencies go down, if Bitcoin goes down in the same way, so that other cryptocurrencies rise in price, Bitcoin must remain on a lateralization or upward trend, in the case of the 5 main alternative currencies of the CMC, the graphics are very similar to those of Bitcoin, and it is logical, they follow the same path of Bitcoin And that's why it's his behavior. I think that a more viable way to diversify would be with gold or real estate investment.
It could be a usual mindset that most coins were depending on how it's going to be affected with bitcoin's increase, but for now I would still remain fair on what I believed. Because as far as altcoins were most concerned here, that doesn't confirmed with the actual changes that we see right now in the market. Most of the promising coins that pumped the highest during 2017, has no definite position to obtain a nicer price nowadays. In fact it has a slow trading volume compared with bitcoin.
In order to minimize some possible risk, never panic and choose holding while there's still chance for altcoins to soar back higher.