Is ATA on Coinbase?

Excuse me, as a keen observer of the cryptocurrency market, I've been hearing quite a bit about the potential of ATA, but I'm not entirely sure about its availability. Could you please clarify if ATA is currently listed and tradable on Coinbase, one of the most popular cryptocurrency exchanges? I'm particularly interested in understanding if there's a direct way for investors to purchase and hold ATA tokens through this platform. Additionally, would you be able to shed some light on any potential considerations or implications for investors looking to add ATA to their portfolios? Thank you for your time and assistance in this matter.