A Retail Exodus? Korean Stock Market Plunges 9%, $4.1 Billion Flows Back into Crypto Market

TechFlow Insight: South Korea’s KOSPI index triggered its circuit breaker again on July 13. Samsung Electronics and SK Hynix plummeted by over 7% and 12%, respectively. The index has retraced more than 20% from its peak on June 19. Retail investors are voting with their feet: according to Coingecko data, the trading volume on Upbit, South Korea’s largest exchange, surged to $4.12 billion in the last 24 hours, a single-day increase of 436%. The top five tokens by trading volume were BTC, XRP, ETH, T, and BLAST.

The nearly week-long crash in the Korean stock market is driving retail funds towards the 加密貨幣 市場。

On July 13, the KOSPI index opened down 63.91 points at 7,412.03. Losses widened during trading, and at 10:34 AM, the KOSPI 200 futures fell more than 5%, triggering the 18th sell-side sidecar of the year. At the time of the trigger, the KOSPI stood at 7,162.21, down 4.20% from the previous trading day.

Samsung Electronics fell over 7.72% on the day, while SK Hynix plunged over 12%. SK Square (the largest shareholder of SK Hynix) dropped 15%, and Samsung Electro-Mechanics fell 17%.

KOSPI Retraces Over 20% from Peak, Semiconductor Super Cycle Faces Crisis of Confidence

The KOSPI has entered a technical correction from its intraday high of 9,385 points on June 19, with a cumulative retracement of over 20%.

The volatility on the Korea 交換 in 2026 has already surpassed that seen during the 2008 financial crisis. As of now, the Korea 交換 has triggered nearly 30 sidecars and multiple circuit breakers this year, breaking the 2008 record of 26 sidecars for the full year.

Samsung Electronics and SK Hynix together account for roughly half of the KOSPI’s market capitalization, effectively determining the index’s direction. eToro market analyst Zavier Wong previously noted that these two stocks had a combined weight of about a quarter in the index at the end of last year, which has now risen to around half. A significant move in either one can drag the entire index before the other nine hundred or so listed companies have a chance to react.

SK Hynix’s ‘Buy the Rumor, Sell the News’ Along with Earnings Forecast Cuts Drag Down the Entire Semiconductor Sector

SK Hynix had just listed its ADR on Nasdaq on July 10, surging 12.8% on its first trading day and raising approximately $26 billion for the company. However, in the Seoul market just three days later, the stock experienced a classic ‘buy the rumor, sell the news’ pullback.

On July 13, analyst Chae Min-sook from Korea Investment & Securities released a report forecasting SK Hynix’s second-quarter operating profit at 60.4 trillion won, about 8% lower than the market consensus of 65 trillion won. The reasoning was that SK Hynix’s higher sales proportion of HBM (High Bandwidth Memory, a high-speed storage technology crucial for 人工智慧 chips) compared to competitors has led to its average selling price growth lagging behind the industry average.

This downward forecast revision is particularly damaging in the current environment. Analyst Lee Kyung-min from Daishin Securities pointed out that due to the KOSPI’s over-concentration in semiconductors, leveraged investment liquidation, and supply-demand shocks, its forward P/E ratio has fallen to levels seen during the 2008 global financial crisis. However, he also noted that current valuations have entered an undervalued zone, where even a small positive catalyst could trigger a sharp rebound.

But other voices in the market urge caution. The KOSPI’s ‘Buffett Indicator’ (market cap-to-GDP ratio) reached 221% in June, far above the average of 70.2% between 2000 and 2025, suggesting that valuations still have room for adjustment.

Upbit Trading Volume Skyrockets 436%, Funds Flow from Stock 市場 to Crypto 市場

According to Coingecko data, Upbit’s 24-hour trading volume reached $4.12 billion, an increase of 436%. The top five tokens by trading volume were: Bitcoin, XRP, ETH, T (Threshold Network), and BLAST.

The migration of South Korean retail funds from stocks to 加密貨幣 is not a new phenomenon. This current shift closely follows the pattern seen in previous KOSPI crashes. During the KOSPI’s decline in May, XRP had already become the highest-volume crypto asset on Upbit and Bithumb, with daily trading volumes exceeding those of Bitcoin and Ethereum.

Tiger Research analyst Ryan Yoon attributes this phenomenon to the demographic of South Korean retail investors aged 40 to 50, who are moving funds from domestic and US stocks into the crypto market, with XRP being a preferred target.

Prior to this surge in trading volume, the Korean crypto market had actually experienced a contraction for five consecutive weeks. From July 3 to 10, the combined trading volume of South Korea’s top five won-based exchanges (Upbit, Bithumb, Coinone, Korbit, Gopax) was 9.9676 trillion won, down 25.75% from the previous week, marking the first time it fell below 10 trillion won since September 2023.

The volume explosion on July 13 represents a concentrated release after this period of contraction and consolidation. In terms of trading varieties, the appearance of Threshold (T) and BLAST in the top five reflects the speculative habits of Korean retail investors favoring small to mid-cap altcoins. According to Bitcoin Sistemi data, T’s 24-hour trading volume on Upbit reached $68.27 million, with total trading volume on Korean exchanges around $76.75 million.

The Seesaw Effect Between the Korean Stock Market and Crypto: A Continuously Validating Trading Logic

South Korea is one of the few global markets where retail funds massively switch between the stock market and the crypto market. As of now, over 16.2 million people in South Korea hold crypto accounts, accounting for about 32% of the total population, and the number of crypto holders has surpassed stock investors. According to Chainalysis data, South Korea has received over $722 billion in cumulative crypto asset value, making it the second-largest receiver of crypto assets globally, behind the United States.

Public data shows that from July 13 to 19, stablecoin trading volume on the top five Korean exchanges reached 2.226 trillion won (approximately $1.62 billion). The high trading enthusiasm among Korean investors was already apparent on July 11 when they aggressively bought XRP.

Following past patterns, the aggressive buying spree by Korean retail investors is typically concentrated within 1 to 3 trading days after a KOSPI crash, after which trading fervor gradually subsides as the stock market stabilizes. Investors need to watch carefully: if the KOSPI finds support at current levels, the ‘spillover effect’ funds in the crypto market could retreat just as quickly.

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