Perpetual futures contracts tied to semiconductor stocks and ETFs experienced a sharp liquidation event on October 18, 2026, resulting in approximately $51.6 million in losses within 10 minutes between 05:22 and 05:32 UTC, according to data compiled across multiple exchanges.
The liquidations hit hardest on long positions, which accounted for around $38.1 million, or 73.8% of the total. The Direxion Daily Semiconductor Bull 3X Shares (SOXL), a leveraged ETF, led the decline with roughly $12.73 million in liquidations. Other affected contracts included SanDisk (SNDK) at approximately $10.85 million, SK Hynix (SKHY and SKHYNIX combined) at roughly $10.72 million, SOXS at about $9.07 million, and Micron (MU) at around $4.40 million.
How Off-Hours Trading Created Volatility
Equity perpetual futures are derivative contracts that track stocks or ETFs but trade continuously on crypto platforms, unlike traditional futures with expiration dates. These contracts can be held indefinitely with leverage, and positions are forcibly closed when losses exceed the trader's collateral.
The liquidation event occurred entirely outside US equity market hours, when the underlying ETFs and stocks were not trading on their home exchanges. This allowed perpetual prices to move independently based on derivative market momentum rather than spot market activity.
SOXL compounds risk for leveraged traders because it is designed to deliver three times the daily move of a semiconductor index. Traders using leverage on a SOXL perpetual effectively stack borrowed exposure on top of the ETF's built-in leverage.
Market Implications
Off-hours trading typically features thinner liquidity, meaning larger price movements can result from individual sell orders or clusters of liquidations. The concentration of liquidations on the bullish side suggests the market had positioned heavily on AI chip exposure.
This incident follows other off-hours liquidation events earlier in 2026 involving equity perpetuals on crypto platforms. The episode highlights the structural difference between crypto derivatives platforms offering 24-hour trading and the limited hours of their underlying US equity markets.
