[Edaily Reporter Lee Jeong Hun ] A “flash crash”—a sudden, sharp drop in price—occurred during trading hours for a futures contract tracking the stock price of SK hynix(000660), which is traded on Hyperliquid (HYPE), a decentralized exchange (DEX) that handles derivatives, including perpetual futures.

The price of the SK hynix perpetual futures contract listed and traded on Hyperliquid plummeted to $927 at one point on the morning of the 28th (local time)—equivalent to approximately 1.36 million won based on the current won-dollar exchange rate.

This plunge is believed to have been caused by a chain reaction of liquidations in leveraged long positions. However, the futures price recovered to a level linked to SK hynix’s stock price within about two minutes. Observers say this incident highlights the high volatility inherent in the decentralized derivatives market.

The flash crash occurred amid growing market-wide anxiety. South Korea’s KOSPI index fell sharply from the opening bell on the 28th, triggering a sell-side circuit breaker. At the time of the futures price plunge, SK hynix’s stock was trading at 1,622,000 won, down 10.68% from the previous trading day.

The sharp decline in the KOSPI coincided with a broad sell-off across Asian stock markets. Analysts attribute this to concerns over global interest rate outlooks and a slowdown in semiconductor demand, which dampened investor sentiment. As a leading memory semiconductor company, SK hynix is inevitably particularly sensitive to shifts in the tech sector and the semiconductor industry.

For this reason, as the price of SK hynix—the underlying asset—plummeted, it appears that stop-loss orders and margin calls occurred in rapid succession on HyperLiquid. Consequently, long positions were quickly liquidated, and the futures price temporarily fell significantly below the underlying asset’s fair value.

This illustrates just how risky leveraged perpetual futures products on decentralized exchanges—which track highly volatile individual stocks—can be. Traditional futures markets have circuit breakers to limit sharp price swings and obligations for market makers to provide liquidity. In contrast, HyperLiquid adjusts the divergence between futures prices and underlying asset prices through an automated liquidation engine and a variable funding rate mechanism.

When prices move sharply and liquidations of long positions occur all at once, the selling pressure generated during this process can overwhelm the liquidity in the order book. As a result, the futures price may temporarily diverge significantly from the price of the underlying asset.

In particular, this incident once again demonstrates that liquidity in decentralized derivatives markets can rapidly dry up when market volatility increases. Although prices recovered relatively quickly, investors caught up in the chain liquidation likely realized actual losses.

Furthermore, the adequacy of risk management tools provided by platforms such as HyperLiquid may become a point of contention. Specifically, there are calls to review whether measures such as position size limits, advance warnings of liquidation prices, trading restrictions during sharp price fluctuations, and safeguards against illiquid market conditions are sufficient. In particular, as the line between traditional financial markets and the crypto asset market rapidly blurs, similar incidents are likely to draw even greater scrutiny and debate from regulatory authorities and market participants in the future.