Almost all altcoins are pump and dump coins. The price of altcoins is very unpredictable, and almost everyone wants to gain profit on them.
Do a lot of research of how to trade. And learn about trading patterns, etc.
Yeah all altcoin is unpredictable and it needs a lot of research to know if the altcoin has a great future..
For me i am relaying in marketcap i choose top 15 to 20 altcoin to invest because i know those coins are living long unlike new altcoin..