South Korean Retail Investors Sell Kospi Shares at Record Pace After July Rout

South Korean retail investors sold a record amount of Kospi-listed shares on Friday, a significant retreat from the market after July's severe reversal damaged confidence, Bloomberg reported.

The selling pressure follows a period of extreme volatility that saw the benchmark index suffer its steepest monthly decline since the global financial crisis.

A Record Month of Volatility

The Kospi index ended July with a 22% loss, despite a sharp 18% rebound on the final trading day of the month. The scale of the market swings was so severe that trading in index constituents was halted four times during July, setting a new record for circuit-breaker suspensions.

This downturn came after a period of intense retail buying in May and June, when individual traders invested approximately 78 trillion won ($54.2 billion) into Kospi shares. That influx was partly encouraged by a government market-reform campaign and the recent introduction of single-stock leveraged exchange-traded funds (ETFs).

Leveraged Products Blamed for Swings

Market analysts suggest these leveraged products, which offer amplified exposure to single companies, contributed to the heightened volatility. As the market turned, leveraged investors were forced into a rush to exit their concentrated positions, exacerbating the downward spiral.

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In response, South Korean authorities temporarily suspended new listings of single-stock leveraged ETFs in mid-July. Officials have since pledged to introduce further measures to stabilize the market and restrict retail access to such high-risk financial products.

AI Stocks at the Epicenter

The sell-off was heavily concentrated in South Korea’s dominant AI and semiconductor firms, which have an outsized impact on the broader market. Key losses in July included:

• Samsung Electronics (KS:005930): Dropped 21%
• SK Hynix (KS:000660): Fell 35%

Together, these two memory-chip manufacturers account for more than half of the Kospi's weighting. Despite the sharp correction, analysts note that the decline was more reflective of unwinding crowded trades and excessive leverage rather than a fundamental collapse in the investment case for artificial intelligence. Further volatility is considered possible as investors continue to reduce leveraged positions.