Upstream (Horizon FZCO) is a securities exchange firm based in Dubai, United Arab Emirates that upstream is an app-based securities market for trading tokenized equities and other digital asset securities, powered by technology from horizon fintex and operated through a joint venture with merj exchange. it facilitates real-time trading and settlement of tokenized ipos, dual-listed equities, spacs, crowdfunded companies and compliant security tokens issued as erc-20 tokens on ethereum. investors can trade using usdc, paypal, cards and us dollar cash accounts, with shares tradable immediately after an offering. horizon fzco is based in dubai. They serve clients in Seychelles, United Arab Emirates, United States. Upstream (Horizon FZCO) is listed on The Token Playbook's vetted provider registry at thetokenplaybook.com/registry/upstream-horizon-fzco.