The sudden shutdown of ZKX, a social derivatives trading platform on the Starknet layer-2 network, has left investors and market makers, including Amber Group, frustrated. On July 30, ZKX founder Eduard Jubany Tur announced the closure, citing economic unfeasibility, but the abruptness and lack of prior communication upset stakeholders.

Amber Group, which provided liquidity for ZKX, expressed shock at the decision. Despite challenges, Amber continued to support the platform, accumulating 3 million ZKX tokens to maintain liquidity. The group criticized the lack of transparency from ZKX, calling it a concerning industry precedent.