I would like to ask you what is the key criteria for you when you decide to buy an altcoin? Graphic analyze, project quality, news or any other thing?
Of course you will need to do your own research to prevent shitcoins from your portfolio,overall quality of the project,the team behind it,and its vision,you shouldnt be buying altcoins from the peak,wait for the perfect time which would be when the market has dipped too much.Never let anyone dicatates your investments.
You must consider everything when buying altcoins because I think it can be more volatile compare to bitcoin so you really have to make an effort to study about that coin so you will not fall on a trap coin. Make your money worth for this kind of investment, don't waste the opportunity of making higher profit.