Study the market, as long as those new tokens are very liquid then invest but that doesn’t mean their liquidity will stay for long. Most of the new altcoins whether added in cmc or not, they’re not staying for long because there are more investors that are going back to the reputable cryptocurrencies. No one can stop you if you want  to stop or continue or whatever you want to do. You’re the captain of your own investment and capital

When it comes to future or long term holds then better stick with bitcoin and other top alts like ETH or in top ranks and dont look for something new which hadnt really able to get some popularity and recognition in the market but i would tell you this that you should
always remember that nothing is assured in crypto investment.

Dont put your life savings on it and always remember about the risk involve on crypto investment which basically means that only make use of the amount that you can only afford to lose.

If you are really eager with new altcoin investment then make out some better research.Look for project relevance and usability rather
than on investing into something due to pure hype and shill.