Bubble · KOSPI Index (2023)
Korea's KOSPI Index drifted just 0.3% over 150 trading days ending October 2023, masking an 11.6% drawdown along the way. Replay this AI-and-chip-policy bubble day by day, face 26 decision points, and receive an AI coach review in a simulated training environment.
150 daily bars · 26 decision points · 2023-03 to 2023-10 · Stocks
Key facts
This window spans 223 days with a peak-to-trough drawdown of 11.6% and a 13.5% run-up.
- Max drawdown
- −11.6%
- Max run-up
- +13.5%
- Duration
- 223 days
- Largest single-day move
- −2.4%
- 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 the spring of 2023, the KOSPI Index stood at the crossroads of global technology policy shifts. Artificial intelligence was reshaping investment narratives worldwide, and semiconductor supply chains had become a geopolitical battleground. South Korea's market, heavily weighted toward chipmakers and tech exporters, faced a critical test: how would equity valuations respond to shifting government incentives, U.S. export controls, and the broader AI investment boom? The 2020s were witnessing a fundamental reconfiguration of technology trade flows, and Korean equities sat at the epicenter.
Over 150 trading days from mid-March to late October 2023, KOSPI drifted from 2348.97 to 2357.02—a nominal gain of just 0.3%. Yet this surface stability concealed significant turbulence: an 11.6% maximum drawdown tested portfolio resilience, while individual sessions saw moves as large as 2.4%. The market presented 26 decision points across this period, with 9 deemed critical moments demanding investor judgment. For someone experiencing this replay, the apparent calm of the endpoint would have offered little warning of the intermediate stress.
The scenario teaches several enduring lessons. First, aggregate returns obscure volatility—steady indexes can mask turbulent underlying positions. Second, policy-driven markets require continuous reassessment as incentives and restrictions evolve. Third, managing through a double-digit drawdown while the terminal number barely budges demands psychological discipline that abstract statistics cannot capture. Participants train to avoid anchoring on initial prices, size positions appropriately for volatility spikes, and maintain risk processes when the market offers no clear directional signal. This replay is not about predicting the next policy announcement; it is about building the decision-making framework to respond with discipline when the environment shifts under your feet.