Yes, you can exchange out your IOTA tokens at any given time. The status of the token may change if it’s held in an offline wallet because, unlike Bitcoin and other cryptocoins where there are no intermediaries to manage the transactions, with IOTAs you cannot move them without first verifying your balance. So if the transaction is unsuccessful or delayed due to full or low network congestion then you will not be able to execute this transaction until that happens again which means that the status of these tokens may change. But once they become fully confirmed by the network, they are irreversible.
Do i need a special iota wallet for trade?
No! You can use any desktop or mobile web platform as long as you have the wallet address. For example, using chrome browser allows you to save all usernames and passwords associated with your coins on local servers so that its security is dependent on your computer hardware rather than their digital nature making it one of safest digital wallets where online cybercriminals are not likely to try their luck against hackers since almost impossible for them getting access into something that has been saved locally even though internet connected systems are vulnerable at times owing to vulnerabilities in software security……………….(therefore avoid saving long complex usernames and pass codes saved within applications)…………..as at times phishing emails have already received enough information about users present account details prior being deleted whereas some parts of credentials left behind by others which otherwise could easily get