[Sep 22, 2026 Korea Market Closing] Why Did KOSPI Reverse After Topping 7,100, and What Does the Meta AI Boom Mean? Korean Stock Market Closing Briefing: Mixed Session Driven by Meta AI Fever and Oil Volatility

Market Summary

The Korean stock market right before the Chuseok holiday witnessed a tug-of-war between global AI optimism and commodity price fluctuations. While world-class technology innovation expectations strongly boosted the market early in the session, external pressures and supply dynamics led to a breather.

• 📌 [Index Movement]: KOSPI closed slightly higher (+0.15%) after briefly topping 7,100 on Meta AI enthusiasm before pulling back due to oil price surges and retail selling, while KOSDAQ closed lower (-0.23%).
• 📌 [Supply & Demand]: Individual investors sold over 9 trillion KRW in stocks over five trading sessions ahead of the holiday to secure cash, weighing heavily on market sentiment.
• 📌 [Corporate Highlights]: SK Telecom developed quantum cryptography digital twin verification technology, while JR Global REIT faced delisting triggers after receiving a ‘disclaimer of opinion’ from its external auditor.

Beginner investors should remain mindful of holiday-specific liquidity fluctuations and focus on calmly verifying the fundamental value of companies and global tech trends rather than reacting to short-term price swings.

Author’s Opinion & Investment Strategy

Seeing the screen glowing red this morning only for indices to taper off in the afternoon made me realize once again that holiday-wrought markets spare no breathing room. Many of you must have checked your portfolios with a sigh of relief just like I did.

• 💡 [Key Strategy 1] Read Pre-Holiday Liquidity Objectively: When individual investors flood the market with sell orders to secure cash before holidays, temporary supply shocks can occur regardless of a stock’s actual merit, so emotional chasing should be avoided.
• 💡 [Key Strategy 2] Separate AI Momentum from Noise: Trends driven by global catalysts like Meta’s AI boom should be evaluated based on whether domestic tech stocks can genuinely benefit, rather than chasing short-term price noise.
• 💡 [Key Strategy 3] Maintain Rigorous Risk Management: As seen in JR Global REIT’s auditor disclaimer, unexpected audit issues or earnings shocks can strike anytime, making financial health checks a mandatory habit.

The stock market always tests us with unexpected homework. I hope today helps you calmly review your portfolio and maintain a sound investment mindset amidst complex pre-holiday market conditions.

Deep Dive of News Channels

① Naver Pay Securities - Summary

Provides real-time individual trading trends and corporate disclosures quickly and transparently, helping investors grasp shifts in market supply and demand at a glance.

• 🔹 [Concentrated Retail Selling]: Captured real-time supply data showing individual investors offloading over 9 trillion KRW ahead of the Chuseok holiday
• 🔹 [Delisting Notice Disclosure]: Delivered disclosures regarding JR Global REIT receiving an auditor ‘disclaimer of opinion’ and related rehabilitation proceedings

• JR Global REIT: Undergoing rehabilitation procedures, the company received a ‘disclaimer of opinion’ from its external auditor, triggering delisting criteria and requiring strict investor caution.
• Cellid: Disclosed a third-party allocation paid-in capital increase targeting Centrust Investment Association and others to raise approx. 3 billion KRW for operational funds.
• SK Telecom: Co-developed digital twin technology with KISTI to pre-verify performance and operational feasibility before deploying quantum cryptography communication networks.
• Meta: Sparked enthusiasm with its artificial intelligence agent ‘Muse’ craze, driving early morning gains for global and domestic semiconductor stocks.

② Yonhap News Economy - Summary

Rapidly and accurately reports macroeconomic policies, labor-management social dialogue, and sovereign wealth fund initiatives.

• 🔹 [Sovereign Wealth Fund & Policy]: Newly appointed Deputy Prime Minister and Minister of Economy and Finance Lee Hyung-il officially stated plans to steadily prepare the Korean-style strategic sovereign wealth fund
• 🔹 [Social Dialogue]: Labor, management, and government held their first working-level consultative body meeting for a ‘one-point social dialogue’ to discuss labor special provisions in the mega-special zone special law

• Cellid: A KOSDAQ-listed firm that attracted market attention by executing a third-party paid-in capital increase to secure operational funding.
• JR Global REIT: Faced an auditor disclaimer notice during rehabilitation, raising vigilance regarding REIT investment stability.
• SK Telecom: Proved its technological prowess by co-developing digital twin-based integration technology in quantum cryptography communications, the future of telecommunications security.
• Bucheon Daejang Public Housing District: The 3rd-generation new town housing site visited by the Minister of Land, Infrastructure and Transport as his first housing supply field action after taking office.

③ Maeil Business - Summary

Delivers vibrant industrial news, global geopolitical issues, and comprehensive market closing analyses to offer deep insights to investors.

• 🔹 [Market Closing Analysis]: Detailed the background behind KOSPI’s fluctuations driven by Meta AI fever, soaring oil prices, and retail selling pressure
• 🔹 [Industry Trend]: Reported on the expansion of K-beauty medical tourism into major commercial hubs such as Myeongdong and Hongdae

• Meta: A key global platform company that sparked early morning surging momentum in domestic semiconductor stocks through its AI agent ‘Muse’ craze.
• SK Telecom: Successfully developed digital twin technology enabling virtual verification of quantum cryptography communication networks in collaboration with KISTI.
• Hyde Park Myeongdong: A representative building located in Myeongdong that absorbs K-beauty medical tourism demand by integrating shopping, procedures, and lodging under one roof.
• JR Global REIT: Faced adverse news of an auditor disclaimer of opinion amidst rehabilitation procedures, running into delisting procedural requirements.

Top 5 Key Companies of the Day

1. SK Telecom: Collaborated with KISTI to develop digital twin technology capable of pre-verifying performance and operability before deploying quantum cryptography communication networks. It continues to pave future growth drivers by leading telecommunications security innovation.
2. JR Global REIT: Received an auditor ‘disclaimer of opinion’ from its external auditor while undergoing rehabilitation proceedings, triggering delisting criteria. This serves as a critical reminder to investors regarding financial stability and audit transparency.
3. Cellid: Disclosed a plan to conduct a third-party allocation paid-in capital increase targeting Centrust Investment Association to raise approx. 3 billion KRW in operating funds, demonstrating active capital securing efforts on KOSDAQ.
4. Meta: Ignited global tech market excitement with its artificial intelligence agent ‘Muse’ craze. This positive catalyst served as a stepping stone for early morning surges across domestic semiconductor stocks.
5. Bucheon Daejang Public Housing District: A 3rd-generation new town housing site inspected by the Minister of Land, Infrastructure and Transport as his inaugural housing supply field action. It highlighted the government’s focus on execution over planning.

Source & Disclaimer

• Source: Naver Pay Securities, Yonhap News Economy, Maeil Business News
• This content represents a personal opinion and is for reference only.