A dramatic flash crash rocked GDAX's ETH-USD market on Wednesday, with Ethereum tokens briefly trading for as little as $0.10. The violent sell-off triggered a cascade of stop losses and liquidations, leaving many traders facing devastating losses. In response, a group of affected investors is attempting to mount a class-action lawsuit against the exchange, which is owned by Coinbase.
Multi-Million Dollar Sell Order Triggers Chain Reaction
Adam White, Vice President of GDAX, attributed the crash to a multi-million dollar sell order that pushed the ETH price from $317.81 to $244.48 in an instant — a 29.4% freefall. The sharp decline then triggered approximately 800 stop-loss orders, leading to widespread liquidations of leveraged positions. ETH tokens were sold at prices as low as $0.10, creating both devastation and opportunity: some fortunes were shattered, while a few traders managed to scoop up drastically undervalued ETH.
GDAX Defends Its Matching Engine, Calls Trades Final
In an official blog post, GDAX stated: “Our initial investigations show no indication of wrongdoing or account takeovers… Our matching engine operated as intended throughout this event. Trading with advanced features like margin always carries inherent risk.” The exchange emphasized that all properly executed trades are final per its Trading Rules (Section 3.1), arguing that honoring such orders is critical to exchange integrity. This position has angered traders who lost substantial capital.
Legal Action Faces Uphill Battle
Despite GDAX's insistence on finality, some investors are pushing forward with a class-action lawsuit. A Google document is circulating, inviting traders who suffered losses to join the legal effort. However, many in the cryptocurrency community are skeptical about the chances of success, citing a similar lawsuit against Poloniex that failed after that exchange suffered technical outages. Legal experts note that exchange terms of service typically include broad disclaimers, making it difficult to prove negligence.
Broader Context: Coinbase Technical Issues and Ethereum Network Strain
The flash crash is the latest in a series of technical problems for Coinbase and GDAX. Roughly a week earlier, both platforms experienced outages during peak trading volumes, locking users out of their accounts. In April, GDAX also saw extreme slippage to $0.06 during scheduled maintenance. Additionally, the Ethereum ecosystem has been under pressure from a glut of hyped ICOs, causing congestion on the network and overwhelming wallet services like MyEtherWallet. Some observers believe that these issues may dampen expectations for the much-anticipated “flippening” (Ethereum overtaking Bitcoin in market cap), as investors may seek to reduce risk.
The GDAX flash crash serves as a stark reminder of the risks inherent in leveraged cryptocurrency trading. Whether the class-action lawsuit gains traction remains to be seen, but the incident has already intensified calls for better risk controls and transparency on major exchanges.