Based on the technology as well as the environmental concerns the future of Bitcoin versus the other major coins can actually be significantly divergent in the years to come.  So, the short answer is if you are betting on cryptocurrencies in general it might be a good time to switch away from Bitcoin to Ethereum, Cardano, and Others.  If you are not particularly keen about other currencies, then it might be a good time to start taking some profits.

High tech investors feel that it is good to stick to Bitcoin and Ethereum.  Those who want to take a little more risk can look in to the first 30, 40 or 50 coins.  Those who are looking for great bargains, which has extra ordinary opportunity, which in the stock market for example would double within days and in the crypto market could do much more than that within days.  Those people can look at the smaller tokens.

There are investors who play both the extremes.  On the one hand because someone is bullish about his entire space. And, then on an issue by issue, case by case and use case by use case basis when investors are confident about the founder, team or the community then micro gaps of investments can be done.

Currently, Bitcoin is the oldest cryptocurrency and it is known as the big daddy of the crypto world. It is the most liquid and it is the largest market cap currency, therefore it is hard to ignore it. At the same time one can easily see that rarely would a currency rise when bitcoin is falling.  May not be in a day, but in months.  Therefore, they are highly correlated anyway.

So, when there is a big rally in Bitcoin, it is very unlikely the other currencies will be faltering. Thus, it can be a good idea to invest in other major cryptocurrencies and different technologies.  These need not be copies of Bitcoin or other, but have interesting technological offerings of their own. So, it is okay to not have bitcoin at all in your portfolio, but for those of them where cryptocurrencies are interesting then, the appraisal that Bitcoin will anyway make will be like safe enough.

Investors should plan their moves when there is an up move or down move in the markets in a way to ensure they sustain a profitable strategy. Investors should expect months and weakness after which it can rebound and the move continues in short- and long-term cycles.