A semiconductor flash crash erased roughly $51.6 million in leveraged positions during weekend trading on cryptocurrency platforms, according to a Blockonomi report. A large sell order on Binance at 21:21 UTC on Saturday set off a chain of liquidations that spread to venues including Hyperliquid, hitting contracts tied to SOXL, SanDisk, and SK Hynix. Thin liquidity worsened the drop because US stock markets were closed. Prices rebounded quickly afterward, and the wider crypto markets held steady. The event stood out because the losses were tied to stock prices rather than cryptocurrency prices, a reflection of how much traditional-market exposure now trades around the clock on crypto platforms.

Binance Sell Order Triggers Liquidations Across Venues

Analyst AN Crypto described the semiconductor flash crash in a post on X. According to the post, liquidations occurred between 21:22 and 21:32 UTC on Saturday, with positions tied to chip stocks and semiconductor funds closed by force during that ten-minute window.

The selling began on Binance. Within seconds, it reached stock contracts linked to Hyperliquid. These contracts stay open even when US exchanges are shut, keeping equity-linked positions live — and exposed to margin calls — during hours when no stock exchange is available to set a reference price.

$52 MILLION WIPED OUT IN JUST 10 MINUTES — WHILE WALL STREET WAS CLOSED. Crypto exchanges are becoming a 24/7 casino for stock traders. This weekend, leveraged bets on semiconductor stocks suffered a massive liquidation wave, even though the underlying U.S. stock market wasn't… pic.twitter.com/j4mTHAvzpk

— AN Crypto (@ANCrypto_) October 18, 2026

Thin weekend liquidity left few buy orders to absorb the large sell order. The sequence showed how quickly selling pressure can move across trading venues.

A liquidation occurs when an exchange forcibly closes a leveraged position after the trader's margin falls too low. Bullish traders took the largest share of the losses: about $38 million came from positions betting on higher prices, while the rest came from traders betting on lower prices.

SOXL, SanDisk, and SK Hynix Lead the Losses

SOXL, a leveraged fund that tracks US semiconductor stocks, recorded the biggest losses, with about $12.7 million liquidated. SanDisk and SK Hynix, two memory-chip makers, followed, each seeing around $10.8 million in liquidations. Together, the three contract groups accounted for about $34.3 million of the total, with other positions making up the remaining balance.

The liquidations came after a rough stretch for the semiconductor sector in regular trading. Chips had logged eight straight losing days, their worst streak since 2008, with pullbacks in AI spending accompanying the decline. The streak left the sector under pressure before the weekend session began, and the flash crash on crypto venues followed this run of losses. In effect, a sell-off that built up during regular trading hours carried over into a weekend session that Wall Street was not part of.

Lack of Live Stock Prices Complicates Weekend Trading

AN Crypto pointed to the absence of an opening bell as the central issue. With Wall Street closed, these contracts had no real-time share prices to anchor them. Traders were effectively reacting to each other, and leverage amplified the move.

US markets reopen on Monday. Actual share prices will then show how far weekend contract prices drifted from the underlying stocks. Until then, moves from the semiconductor flash crash cannot be compared with live stock data. For traders in these products, the gap between the weekend session and Monday's open is the data point to watch.

Tokenized stock exposure and perpetual contracts now allow markets to trade around the clock. Perpetual contracts have no expiry date, so traders can hold them as long as margin requirements are met. However, constant access does not guarantee reliable price discovery or deep liquidity. Longer trading hours offer more opportunity, but they also create more ways for traders to face liquidation.