South Korea prosecutors seek death penalty for ex-President Yoon

South Korean special prosecutors have asked a Seoul court to sentence ousted President Yoon Suk Yeol to death over his December 2024 attempt to impose martial law, accusing him of a self-coup that threatened the constitutional order; the criminal trial for insurrection and related charges concluded after 11 hours and a verdict is expected on February 19. Yoon, who was impeached, removed from office and jailed after the Supreme Court deeming the decree unconstitutional, denies the charges and faces multiple additional trials—including an obstruction case with a separate verdict due Friday that could carry a 10-year term and an aiding-the-enemy probe over alleged drone flights toward North Korea—while the presidency of successor Lee Jae Myung says it expects the judiciary to act according to law; a death sentence is unlikely to be carried out given South Korea's de facto moratorium on executions since 1997.

Analysis

Market structure: Political-legal shock raises immediate risk premia on Korean domestic assets — equity risk premium should widen by 150–300bp vs. global EM peers in the first 2–4 weeks, pressuring cyclical/consumer names reliant on domestic demand while boosting defense and FX-hedged export names. FX will be the fastest-adjusting market: expect USD/KRW to gap +1–3% intraday on major negative headlines and trend +3–7% over 1–3 months if arrests/riots persist. Sovereign credit spreads vs. Bunds/USTs are likely to widen modestly (20–60bp) if capital outflows accelerate.

Risk assessment: Tail risks include capital controls (low probability, high impact), a North Korea escalation triggered by political distraction, or targeted sanction threats (each would cause >10% KOSPI drawdown). Near-term (days–weeks) volatility spike is most likely; medium-term (3–12 months) outcomes depend on judicial timeline (verdict Feb 19 and near-term obstruction verdict) — guilty verdicts that sustain political polarization prolong risk premium. Hidden dependencies: large foreign ownership of KOSPI (~30–40%) amplifies volatility via fast outflows; corporate governance reforms could accelerate if the new gov’t consolidates power.

Trade implications: Tactical trades favor FX hedges and idiosyncratic longs in defense/defense-supply chains while hedging broad market exposure: buy USD/KRW call spread (3m), long Korea defense names (Hanwha Systems 272210.KS, LIG Nex1 079550.KS) 1–2% each as 6–12m trades, and buy 1–3m EWY put spreads for downside protection. Pair trade: long 6–12m Hanwha Systems vs short 3–6m Korean banks (KB Financial 105560.KS or Shinhan 055550.KS) — political risk hurts domestic credit volumes more than offshore defense orders.

Contrarian angles: Consensus focuses on immediate risk-off; underappreciated is a selective re-rating of exporters with >50% foreign revenue (Samsung Electronics 005930.KS, Hyundai Motor 005380.KS) which could outperform if KRW weakens 5–10% — hedge local equity beta and buy currency-exposed exporters on 5–7% KRW moves. The market may overprice long-term capital flight; if Feb 19 verdict is lighter or moratorium on executions reaffirmed, expect a sharp snap-back (20–35% of initial loss) within 1–3 months — size protects should be scaled to event risk.

Key Decisions for Investors

• Establish a 2–3% portfolio hedge by buying 3-month EWY 5% OTM put spreads (sell nearer OTM) to cap cost, increase to 4–6% if KOSPI drops >7% within 10 trading days.
• Take a 1–2% long position in Hanwha Systems (272210.KS) and 1% in LIG Nex1 (079550.KS) as 6–12 month plays anticipating higher defense budgets; trim if share gains >30% or if USD/KRW eases below +3% from current.
• Deploy a 1–2% directional FX trade: buy a 3–6 month USD/KRW call spread targeting +3–7% move (entry if spot moves +1.5% intraday) with stop-loss if KRW strengthens >2% from entry.
• Open a relative value pair: short 1–2% in KB Financial (105560.KS) or Shinhan (055550.KS) vs. long 1% Hanwha Systems — close pair if spread narrows <20% of entry or after Feb 19 verdict; reassess on verdict outcome within 48 hours.