Fundstrat co-founder Tom Lee has warned that Ethereum could face additional short-term selling pressure as a sharp downturn in South Korean equities raises the risk of forced liquidations across financial markets. The warning follows a decline of more than 6% in South Korea's benchmark KOSPI index on Tuesday, October 13, driven by heavy selling in technology and semiconductor stocks.
In a social media post, Lee highlighted the substantial participation of South Korean investors in cryptocurrency markets, arguing that severe equity losses could spill into digital assets through margin calls and liquidity pressures. His concern centers on the possibility that investors facing demands for additional collateral may be forced to sell cryptocurrency holdings to cover losses elsewhere.
Ethereum could be particularly vulnerable under such conditions, according to Lee. The potential pressure would not necessarily reflect a deterioration in Ethereum's underlying fundamentals but rather a broader process of investors reducing exposure or liquidating assets to meet immediate financial obligations.
The market disruption intensified after KOSPI 200 futures fell more than 5%, prompting the Korea Exchange to activate its sell sidecar mechanism at approximately 09:48 local time. The emergency measure temporarily restricts certain sell orders in the futures market to slow abrupt declines and reduce the risk of disorderly trading.
Despite the intervention, selling pressure continued across South Korean equities. The persistence of the downturn suggests that temporary trading restrictions were insufficient to reverse the broader repricing of risk, particularly among technology companies exposed to the semiconductor industry.
Samsung Electronics and SK Hynix were among the major companies affected as investors reassessed the outlook for artificial intelligence-related demand and the competitive position of South Korean memory chip manufacturers. Concerns intensified following technological advances by Chinese memory chip producer ChangXin Memory Technologies, which raised questions about potential competition, memory chip pricing and future profit margins.
Weakness in semiconductor equities also extended beyond South Korea. The Philadelphia Semiconductor Index declined 2.67% in the latest U.S. session, indicating that pressure on the sector was not confined to a single national market. The simultaneous weakness highlights how concerns about technology valuations and industry competition can affect investor sentiment across interconnected equity markets.
For cryptocurrency markets, the principal transmission risk lies in cross-asset deleveraging. When leveraged investors experience substantial losses in equities, brokers may demand additional collateral, potentially forcing the sale of other liquid holdings. If cryptocurrency assets are used to meet those obligations, selling pressure can emerge independently of developments specific to Bitcoin or Ethereum.
This distinction is important for interpreting Ethereum's potential market reaction. A decline driven by forced liquidations would reflect immediate funding requirements rather than necessarily signaling a fundamental change in the asset's longer-term outlook. Nevertheless, concentrated selling could amplify short-term volatility if liquidation activity triggers further reductions in risk exposure.
Lee's assessment also draws attention to South Korea's role in the cryptocurrency market. Significant participation by domestic investors creates a potential connection between local financial stress and digital-asset trading activity. However, the warning identifies a possible transmission mechanism rather than establishing that widespread Ethereum liquidations have already occurred.

