The method involved here will be determined by the broker you choose. For instance, if you select an exchange without an in-built wallet, you’ll have to move your tokens to a private storage facility after purchasing them. This means you’ll equally have to transfer the tokens back to the exchange when you want to sell. On the other hand, a broker like eToro allows you to sell your NEO tokens directly from your portfolio — as the coins are stored in the platform’s in-house wallet!