KOSPI Trends and Domestic Market Investment Strategy Amid Semiconductor Concentration

KOSPI Trends and Domestic Market Investment Strategy Amid Semiconductor Concentration | Chesley Investment Advisory Executive Director Park Se-ik
Watch on YouTube ↗  |  May 30, 2026 at 00:00  |  25:40  |  Chesley Investment Advisory (체슬리투자자문)
Speakers
Park Se-ik — CEO, ex-Chief Strategist

Summary

Park Se-ik analyzes the extreme concentration in KOSPI where only Samsung Electronics and SK Hynix rise while most other stocks fall. He warns that many stocks are moving on narrative without earnings support, using Samsung SDS, Hyundai Mobis, and active ETFs as examples. He also presents a tactical RSI-based trading rule for Samsung Electronics.

  • Only about 15 out of 200 KOSPI stocks are positive on a day the index gains 2.25%.
  • Samsung Electronics and SK Hynix are the only consistent winners, driven by earnings.
  • Samsung SDS and Hyundai Mobis are flagged as narrative-driven with weak margins.
  • KOSDAQ active ETFs have fallen 21% since launch, echoing past active ETF failures.
  • Foreign investors sold KOSPI/KOSDAQ and maintained a bearish options spread.
  • Park Se-ik recommends a strict RSI 70 breakout sell rule for Samsung Electronics traders.
  • He emphasizes that without operating margin improvement, many stocks will remain unattractive.
  • The market is heavily concentrated in semiconductors, making it difficult for other sectors.
Trade Ideas
Park Se-ik CEO, ex-Chief Strategist 11:35
Avoid Samsung SDS on low margin narrative
Samsung SDS has risen recently but its operating margin is only 6.87% and has been declining; without an explosive improvement in operating profit margin, the stock is moving on narrative (AI/cloud story) rather than fundamentals. Given the low margin and high valuation (PBR ~1.5x), it is unattractive and should be avoided.
018260.KS MED
Park Se-ik CEO, ex-Chief Strategist 13:39
Avoid Hyundai Mobis on declining margin
Hyundai Mobis is rising on a governance narrative (merger with Boston Dynamics, becoming a holding company), but its operating margin has been declining steadily. The same story played out in 2021 and the stock subsequently fell. Without margin improvement, the stock is overvalued and should be avoided.
012330.KS LOW
Park Se-ik CEO, ex-Chief Strategist 23:24
Trade Samsung Elec with RSI 70 rule
For Samsung Electronics, use an RSI-based trading rule: if RSI (70 level) breaks downward, sell immediately; if the stock recovers and RSI rises again, chase the uptrend. This approach helps manage risk in a volatile market while staying aligned with the stock's strong earnings-driven momentum.
005930.KS MED
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This Chesley Investment Advisory (체슬리투자자문) video, published May 30, 2026, features Park Se-ik discussing 018260.KS, 012330.KS, 005930.KS. 3 trade ideas extracted by AI with direction and confidence scoring.

Speakers: Park Se-ik  · Tickers: 018260.KS, 012330.KS, 005930.KS