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KOSPI Post-Crash Analysis: Real Bottom or Dead Cat Bounce?

Navigating Market Direction After the Circuit Breaker

2026-03-05KOSPI2-4 weeksNeutral8 min read

Quick Summary

TL;DR

📉KOSPI fell -12.06% on March 4 — one of the worst single-day drops in history
📈March 5 bounce of +9.6% — but mathematically still -3.6% below pre-crash
🌍Korea-specific crisis — same day S&P was +0.8%, BTC +6.5%
⚠️60% probability of retesting lows within 2-4 weeks post circuit breaker

KOSPI 2-4 weeks Chart | TradingView

📊Anatomy of the Crash

March 4th's -12.06% was not a simple decline. Circuit breakers triggered twice, halting trading for 20 minutes each time. At its worst intraday point, KOSPI was down over 14%. Key numbers: - KOSPI: 6,307 → 5,094 (-19.2% in 7 trading days) - Samsung: 218,000 → 172,200 won (-21%) - SK Hynix: 1,099,000 → 849,000 won (-23%) - USD/KRW: 1,427 → 1,483 (won -3.8%)

▸KOSPI down -19.2% in 7 trading days
▸Samsung -21%, SK Hynix -23%
▸Won crashed to 1,483 per dollar

📈Quality of the Bounce

Three criteria to evaluate the +9.6% bounce quality: 1. Volume: Bounce-day volume should be 80%+ of crash-day volume for a strong bounce. This bounce was approximately 75%. 2. Sector breadth: Did all sectors bounce evenly? This bounce was semiconductor-led and concentrated. 3. Foreign flows: Did foreigners switch to net buying? Still net selling.

▸Volume at 75% — moderate level
▸Semiconductor-concentrated bounce — lacking breadth
▸Foreigners still net selling — warning signal

📜Historical Precedents

Post-circuit-breaker patterns in the Korean market: - March 2020 (COVID): -8% circuit breaker → next day +8.6% bounce → retest 2 weeks later → real bottom - October 2008 (GFC): Circuit breaker → bounce → new low 3 weeks later Common pattern: Strong bounce immediately after circuit breaker → retest of lows within 2-4 weeks → real bottom confirmed after retest. Historically, the first bounce is the actual bottom only about 40% of the time.

🎯Key Technical Levels

Critical price levels to monitor over the next 2-4 weeks: Support: - 5,094 (March 4 close) — if held, bottom confirmed - 4,800 — next major support Resistance: - 5,800 — first resistance - 6,100 — trend recovery confirmation If KOSPI holds 5,094, the bottom is confirmed. If it breaks below, a decline to 4,800 is possible.

▸5,094 holds = bottom confirmed
▸5,094 breaks = 4,800 test
▸5,800 recovery = normalization begins

💹Trading Scenarios

Bottom Confirmed

Condition: KOSPI holds above 5,094 + foreigners turn net buyers + geopolitical de-escalation

Meaning: The crash was an overshoot and the bounce marks a genuine bottom

Expected Flow: 5,094 → 5,800 → 6,100 (2-4 weeks)

Strategy: Scale in at 5,094-5,200. Focus on quality semiconductor names.

Dead Cat Bounce

Condition: Bounce fades + foreign selling continues + won weakness persists

Meaning: First bounce was technical only — real bottom is lower

Expected Flow: 5,584 → retest 5,094 → possible 4,800

Strategy: Raise cash. Reduce on bounces. Reassess at 4,800.

📍Key Checklist

■Monitor KOSPI daily close relative to 5,094
■Track daily foreign net buy/sell data
■Watch USD/KRW for breach above 1,500
■Follow Hormuz Strait geopolitical developments
■Check if VIX stays above 25
■Monitor Samsung/SK Hynix individual support levels

🎯Conclusion

Historically, only 40% of first bounces after circuit breakers mark the real bottom. 60% see a retest within 2-4 weeks. Given persistent foreign selling, semiconductor-concentrated bounce, and won weakness, the probability of a retest is elevated. Scale-in buying with cash reserves is the prudent strategy. Lose less. Last longer.

Edu only — NFA.

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