Korea Stock Trading Hits 153 Trillion Won Daily Amid Overheating Concerns

*Editor's Note: 'AI PRISM' (Personalized Report & Insight Summarizing Media) is an artificial intelligence-based personalized news recommendation and summary service developed with support from the Korea Press Foundation. It selects and provides six customized news articles tailored to each reader type.

1. Stock Market Overheating Concerns Mount…Trading Volume Doubles in Two Months

- Key Summary: Combined trading volume on the Korea Exchange and Nextrade reached 153.7501 trillion won on the 1st, up 45% from last month's daily average and more than doubling from April. With the KOSPI approaching the 9000 mark, additional buying by FOMO-stricken retail investors and the spread of pre-market and after-market enthusiasm are interpreted as having driven the trading surge. Foreign investors net sold 6.5644 trillion won on the KOSPI that day, the third-largest figure on record, while retail investors absorbed 6.2939 trillion won to support the index. Fatigue from the short-term surge, concentration in large-cap semiconductor stocks, and the increase in leveraged products combined to produce a roller-coaster session with intraday plunges of 430 points, raising vigilance over the possibility of an overheating correction, according to analysis.

2. Samsung Electronics Surpasses Meta to Climb to 10th in Global Market Cap…"Tesla in Sight"

- Key Summary: Samsung Electronics' combined common and preferred stock market capitalization reached $1.56 trillion, surpassing Meta ($1.524 trillion) to rank 10th globally. Amid analysis that corporate value is being fully re-rated as the supply of AI memory such as HBM gets underway in earnest, major domestic securities firms have projected that Samsung Electronics' operating profit will exceed 500 trillion won next year. SK Securities (001510) raised its target price for Samsung Electronics to 610,000 won and SK hynix to 4 million won, while UBS raised its target price for Micron by 204% to $1,625. SK hynix (13th) and Micron (12th) also surged more than 150% over three months each, lifting the KOSPI's total market capitalization to sixth in the world, with assessments that fifth place is within reach as the gap with Taiwan's stock market ($5.15 trillion) is minimal.

3. U.S. Banks' AI Company Loan Commitments at 700 Trillion Won…Bubble Trigger Concerns If Rates Rise

- Key Summary: Major U.S. banks' AI-related industry loan commitments reached $450 billion (about 683 trillion won) last year, a surge of 80% from a decade ago, approaching 25% of Tier 1 capital, a key indicator of bank soundness. Commitments to high-risk borrowers with credit ratings of B or below also reached $50 billion (about 75 trillion won), with the Chicago Fed warning that "if risks materialize, large-scale losses are feared." On the other hand, AI investment drove 0.97 percentage points of U.S. economic growth (2.51%) in the first three quarters of last year, equivalent to 39% of total growth, surpassing the contribution (28%) during the 2000 dot-com bubble. Amid the coexistence of AI bubble concerns and growth contributions, observers point out that overall financial system exposure could be larger than official figures when non-bank financial institutions and private credit lending are taken into account.

4. Corporate Bonds Hampered by High Rates…Net Issuance at 10-Year Low

- Key Summary: This year's net corporate bond issuance recorded 899.8 billion won, the lowest level in 10 years since 2016 (882.9 billion won), plunging to one-twenty-fifth of the same period last year (20.3507 trillion won). Three-year government bond yields have surged 83.9 basis points since the start of the year and AA- corporate bond yields have jumped 94.6 basis points, while the Bank of Korea's signaling of a possible rate hike within the year has added to issuance burdens. While Lotte Shopping (AA-) received 1.085 trillion won in valid orders during demand forecasting, Dongwha Enterprise (BBB+) recorded a complete failure to sell, marking clear polarization by credit rating. Choi Sung-jong, an analyst at NH Investment & Securities, stressed the need to monitor liquidity at companies rated BBB+ or below, saying that "the K-shaped credit structure across industries will deepen further."

5. Even in a Bull Market…Disclosure Violation Warnings Remain

- Key Summary: From the start of this year through the 29th of last month, the number of companies designated as unfaithful disclosure entities on the KOSPI and KOSDAQ was tallied at 20 and 36, respectively, with KOSPI designations notably higher than the same period last year (18). The number of pre-designation notices for unfaithful disclosure entities also rose to 76 this year from 70 last year, raising the possibility of expanded designations in the second half. According to the Korea Capital Market Institute, KOSDAQ unfaithful disclosure designations have accounted for about 70% of the total market over the past three years, with frequent disclosure reversals such as business withdrawals by small- and mid-cap and biotech companies. As the exchange imposes sanctions including stock trading suspensions when penalty points accumulate, observers point to the need to check disclosure histories when investing in KOSDAQ small- and mid-cap stocks.

6. Exchange Rate Surges Despite KOSPI Record High…Won Shaken by Foreign Selling and Taiwan Dollar Linkage

- Key Summary: The won-dollar exchange rate closed at 1,516.4 won, up 12.1 won from the previous trading day, soaring to its highest level in two months since April 2 (1,519.7 won). With the dollar index (DXY) showing weakness, the won's solitary weakness is attributed primarily to foreign net selling of stocks (8.1081 trillion won), with Wi Jae-hyun, an analyst at Kyobo Securities (030610), explaining that "the scale of capital exiting the stock market is overwhelming." The analysis notes that foreign stock investment funds directly affect the foreign exchange market without currency hedging, making them far more sensitive to exchange rates than bonds. While the authorities' defense will is strong in the 1,520-1,530 won range considered the alert line, assessments indicate that there is no clear catalyst for a turn to won strength unless foreign selling subsides.