Ethereum, cardano and polkadot are portfolios that are quite popular today, and we can see if the three altcoins continue to experience price changes from time to time, so in my opinion, you are right in holding these three altcoins as your investment asset portfolio, while the other three For your other assets, I don't dare to give an opinion, because to be honest, I don't really follow the news about these three assets and for me personally, theta, avax and therra luna are less familiar so far, so it might be a little risky to hold them.