Bubble · KOSPI Index (2007)
Replay 150 daily bars of the KOSPI from April to November 2007 as the index climbed 18.8% from 1520.78 to 1806.99, masking an 18.3% drawdown and a 6.9% single-day swing. Step through 26 decision points day by day, including 9 critical ones, and receive an AI coach review in a simulated training environment.
150 daily bars · 26 decision points · 2007-04 to 2007-11 · Stocks
Key facts
This window spans 222 days with a peak-to-trough drawdown of 18.3% and a 36.4% run-up.
- Max drawdown
- −18.3%
- Max run-up
- +36.4%
- Duration
- 222 days
- Largest single-day move
- −6.9%
- Bars
- 150 Daily bars
- Decision points
- 26
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
In spring 2007 the KOSPI index sat at the crossroads of a global liquidity surge and mounting concerns about an asset bubble in Korea. From April 13 to November 21 of that year the market offered a textbook case of a bull trend that rewarded confidence while punishing complacency. The scenario spans 150 daily bars, giving traders a granular view of how sentiment shifted across a seven-month stretch when the broader narrative was still unresolved.
The headline gain of 18.8% conceals the turbulence beneath. The index climbed from 1520.78 to 1806.99 while absorbing an 18.3% maximum drawdown and a single-day swing of 6.9%. Those sharp reversals tested every participant's conviction, and the 26 decision points—9 of them critical—forced real choices about entries, exits, and sizing. Navigating this environment required discipline regardless of which direction one leaned, because the price path was shaped as much by fear as by optimism.
The core lesson is that a rising market is not a safe market. The drawdown figure alone demonstrates that even a winning year contains periods where positions face severe unrealized losses. Decision training here centers on two skills: managing risk when momentum suggests holding on, and maintaining psychological resilience when fundamentals argue for staying put. Stepping through the 26 moments day by day—and receiving an AI coach review—lets trainees see exactly where process aligned with the market and where emotion overrode analysis. This is the value of historical replay: practicing judgment in a real price environment without any capital at risk.