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 What is the difference between market & limit orders on the iSTOX Exchange? What are trading hours for the iSTOX exchange? Is there a minimum investment amount to trade on our secondary market? Is there a minimum investment amount for each issuance? Can the custodianship of my digitized securities be moved to another provider?