Pandemic · KOSPI Index (2015)
A 15.8% drawdown scarred the KOSPI across 144 days of 2015 MERS-driven panic. Replay each trading day, weigh 25 policy and volatility decision points, and receive an AI coach review, simulated for education only.
144 daily bars · 25 decision points · 2015-02 to 2015-09 · Stocks
Key facts
This window spans 207 days with a peak-to-trough drawdown of 15.8% and a 10.3% run-up.
- Max drawdown
- −15.8%
- Max run-up
- +10.3%
- Duration
- 207 days
- Largest single-day move
- +3.0%
- Bars
- 144 Daily bars
- Decision points
- 25
Every figure above is computed programmatically from this replay’s own candle series — no editorial input, no LLM. Methodology: Methodology
The market advances day by day. You only see candles up to the current day — as if you were really there.
At key decision points choose Buy / Trim / Exit / Hold. Each decision advances the timeline by one day.
After settlement you get a six-dimension score and an AI coach review. Your result enters the scenario leaderboard.
Event Replay
What happened — and what it teaches
The Korean stock market faced one of its most turbulent periods in recent memory when Middle East Respiratory Syndrome (MERS) arrived in South Korea in spring 2015. The Korea Composite Stock Price Index (KOSPI), a barometer of the nation's economic health, would be tested across 144 trading sessions spanning from late February through late September. The scenario captures a market caught between policy uncertainty and genuine public health fear, where every trading day brought new decisions with real consequences.
From an opening close of 1993.08, the index ultimately settled at 1964.68, representing a modest decline of -1.4% over the full period. Yet this headline number conceals the true volatility experienced: the market endured a maximum drawdown of 15.8% at its worst point, with single sessions producing moves as large as 3.0%. Across these 144 days, traders and investors navigated 25 distinct decision points, including 9 critical junctures where choices carried heightened significance.
This replay teaches that headline performance metrics can be deeply misleading. Investors must develop the discipline to maintain perspective when facing extreme market turbulence, recognizing that temporary losses do not necessarily signal permanent capital destruction. Emotional resilience becomes crucial—panic-selling at market bottoms can transform a manageable drawdown into a devastating permanent loss. The core lesson emphasizes process over outcome: robust risk management, systematic decision-making, and psychological preparedness prove more valuable than predicting market movements.