Altcoin I may reconsider holding should be either exchange tokens or altcoins that has taste the hit of time like ETH, BCH, XRP and some good ones out there aside them nothing again.
True, if you want to make a lot of profit, then hold altcoin born from exchanges or tokens that have been hit on various exchanges, but the thing to remember is the risk of loss is also greater, and if we hold a stable token or coin then the risk of loss is very little , although the benefits are also small.