Market Review: The Ant Rebellion—Individual Power Reverses a 180p Dip to Hit KOSPI 5,200

On Thursday, January 29, 2026, the KOSPI demonstrated extraordinary volatility and resilience, closing at a fresh record high of 5,234.07 (+1.22%). The session was a testament to the power of individual investors, who effectively reversed an intraday collapse of nearly 180 points. While foreign investors utilized record earnings from Samsung and SK Hynix as a “sell-on-news” opportunity, a massive wave of retail liquidity—totaling over 1.7 trillion KRW—stabilized the index. The KOSDAQ followed suit, rising +1.90% to 1,155.03, marking its 9th gain in the last 10 trading sessions.

1. Individual Dominance: The 1.7T Reversal

The day was defined by a classic tug-of-war between institutional/foreign profit-taking and retail conviction.

• The Ant Army: After the KOSPI dipped significantly mid-day due to macro concerns and tech guidance, individual investors stepped in with unprecedented aggression. They absorbed the 1.5 trillion KRW sell-off from foreign investors, preventing a technical breakdown and pushing the index to its first-ever 5,200 close.
• Liquidity Surge: Total market trading volume remained near the 50 trillion KRW level, confirming that the current rally is backed by a historic influx of retail capital.

2. Semiconductor Giants: Record Profits vs. Sell-on-News

The earnings season reached its peak as Korea’s chip leaders reported generational financial results, leading to a complex market reaction.

• SK Hynix’s Victory: SK Hynix (000660) maintained its upward trend (+3.0%) after confirming its FY2025 record profit of 47.2 trillion KRW. Sentiment was bolstered by news that it has secured an exclusive HBM3e supply deal for Microsoft’s Maia 200 chip and two-thirds of Nvidia’s HBM4 volume.
• Samsung’s Sell-Off: Despite reporting a quarterly profit near 20 trillion KRW and announcing HBM4 supply for Nvidia in February, Samsung Electronics (005930) closed down -0.8% as foreigners offloaded shares in a typical “sell-the-fact” move.

3. Tesla’s Robotics Pivot: From Model S to Optimus

Shockwaves from the U.S. overnight affected the automotive and battery sectors, though the robotics theme remained the primary beneficiary.

• The Fremont Transformation: Tesla announced it would discontinue production of its flagship Model S and Model X in Q2 2026 to convert its Fremont factory into a dedicated production hub for the Optimus humanoid robot.
• Sector Impact: While this caused temporary uncertainty for traditional battery suppliers, it fueled a massive rally in robotics-related tech. Pure-play robotics firms saw renewed speculative interest as the “Physical AI” era moves from vision to mass manufacturing.

4. Macro Pressure and the ‘Reflex Benefit’ from China

The market wrestled with mixed signals from the U.S. Treasury and shifting regional travel flows.

• Bessent’s Trade Warning: U.S. Treasury Secretary Scott Bessent warned that there is “no trade deal” with South Korea until the National Assembly ratifies the recent agreement. This pressure regarding the 25% tariff hike contributed to the mid-day dip.
• The China-Japan Inversion: Sentiment was lifted by news that China has canceled all 49 air routes to Japan for February due to rising diplomatic friction. This has triggered a “reflex benefit” for South Korean tourism, cosmetics, and airlines as Chinese Lunar New Year travelers pivot toward Seoul and Jeju.

5. Sector Rotation: Securities, Space, and Bio

• Securities Boom: With daily trading volumes hitting record highs, brokerage firms like Mirae Asset Securities (006800) surged over +14% on expectations of record-shattering commission revenue.
• Space Economy: Anticipation for SpaceX’s June IPO continues to drive aerospace stocks, with HVM (489920) and Satrec Initiative maintaining strong upward momentum.
• KOSDAQ Bio: The biopharma sector staged a robust recovery as the 6-day institutional buying streak on the KOSDAQ targeted “Oversold Growth” names.

Institutional Conviction: Top 5 High-Trend Tickers

While individuals led the KOSPI, institutions focused on sectors with high policy visibility and regional geopolitical benefits:

1. Mirae Asset Securities (006800): The primary beneficiary of the 50 trillion KRW daily trading volume environment.
2. SK Hynix (000660): The undisputed leader of the AI memory monopoly, supported by exclusive Big Tech supply deals.
3. Amorepacific (090430): Gaining “Reflex Benefit” as Chinese tourism shifts from Japan to Korea.
4. HVM (489920): Leading the space economy charge as SpaceX’s IPO timeline becomes a tangible catalyst.
5. Rainbow Robotics (272410): Riding the wave of Tesla’s robotics pivot and the upcoming Boston Dynamics IPO.

Investor Strategy: The KOSPI has successfully navigated a high-volatility “Sell-on-News” event, anchored by the massive liquidity of individual investors. While the 5,200 level is a historic high, the HBM Monopoly, Robotics Transformation, and China-Japan Friction provide structural tailwinds. I recommend maintaining a focus on “Oversold Growth” mid-caps on the KOSDAQ and utilizing any macro-driven dips in the semiconductor sector as long-term accumulation points. Expect heightened volatility next week as the market enters a technical overbought zone (ADR), but the underlying upward trend remains firmly intact.