Boom · KOSPI Index (2023)
Replay 150 trading days on the KOSPI from February to September 2023 as the index climbed 5.0% from 2452.7 to 2574.72. Step through daily bars, tackle 26 decision points including 9 critical ones, and receive an AI coach review of each call—simulated capital, educational only.
150 daily bars · 26 decision points · 2023-02 to 2023-09 · Stocks
Key facts
This window spans 217 days with a peak-to-trough drawdown of 6.1% and a 13.5% run-up.
- Max drawdown
- −6.1%
- Max run-up
- +13.5%
- Duration
- 217 days
- Largest single-day move
- −2.6%
- 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
The KOSPI index in early 2023 presented traders with a nuanced challenge: navigating 150 trading days from February to September while the market climbed modestly but with meaningful internal swings. The Korean equity benchmark moved within a broader context of policy uncertainty and chip-sector revival expectations, creating an environment where directional conviction had to be weighed carefully against sudden reversals. With 26 decision points embedded in the replay—including 9 designated as critical—participants faced a stream of moments requiring clear strategic thinking rather than reactive adjustments.
Over the 150-bar span, the index advanced from 2452.7 to 2574.72, delivering a 5.0% total return. That figure obscures the journey: a maximum drawdown of 6.1% tested anyone holding positions through intermediate weak periods, while the largest single-bar move of 2.6% reminded participants that volatility clusters unpredictably. The modest overall gain punctuated by sharper localized moves made this period a case study in the gap between simple directional calls and disciplined position management.
The replay's value lies not in predicting outcomes but in confronting the decision-making process under uncertainty. Navigating 9 critical points teaches traders to separate signal from noise, manage exposure relative to drawdown tolerance, and maintain psychological steadiness when individual bars conflict with longer-term thesis. For educational purposes, this KOSPI run offers a controlled environment to practice these distinctions with simulated capital only.