Can I buy digitized securities without participating in an issuance? iSTOX January 22, 2020 02:38 Yes. Registered iSTOX investors may buy and sell securities on the iSTOX Exchange, our secondary market trading platform. Related articles How do I liquidate my digitized securities? What fees does iSTOX charge investors? Is there a minimum investment amount to trade on our secondary market? What are trading hours for the iSTOX exchange? Do I qualify as an iSTOX investor?