Regulation · KOSPI Index (2023)
Stocks and the KOSPI index collapsed up to 12.4% during South Korea's full short-selling ban from August 2023 to March 2024. Replay 150 daily bars, navigate 9 critical decision points, and receive an AI coach review in this simulated training scenario.
150 daily bars · 26 decision points · 2023-08 to 2024-03 · Stocks
Key facts
This window spans 225 days with a peak-to-trough drawdown of 12.4% and a 20.9% run-up.
- Max drawdown
- −12.4%
- Max run-up
- +20.9%
- Duration
- 225 days
- Largest single-day move
- +5.7%
- 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 August 2023, South Korea's financial regulators implemented a comprehensive ban on short selling for the KOSPI index, a measure designed to stabilize markets during a period of elevated volatility. This extraordinary intervention altered the fundamental rules of engagement for market participants, removing an entire category of trading strategies and creating profound uncertainty about market dynamics. The period from August 2023 to March 2024 tested investors under conditions where conventional hedging and bearish positioning became impossible, forcing a complete recalibration of risk management approaches.
Over the 150 trading days spanning this regulatory experiment, the KOSPI moved from 2601.56 to 2748.56, delivering a net gain of 5.7%. Yet this outcome masked substantial turbulence beneath the surface. The index experienced a maximum drawdown of 12.4%, with individual daily sessions seeing moves of up to 5.7%. Navigating this volatility required participants to confront 26 distinct decision points, of which 9 were deemed critical to outcome trajectories.
This replay illuminates how regulatory interventions create asymmetric market conditions that challenge conventional wisdom. The gap between the 12.4% drawdown and the eventual 5.7% gain underscores a critical insight: drawdowns do not dictate terminal outcomes, but they exact a psychological toll that can derail disciplined execution. The scenario trains participants to manage risk under constraints they cannot control, to distinguish between temporary dislocation and fundamental deterioration, and to maintain decision-making rigor when familiar tools are stripped away. The AI coach review process reinforces these lessons by examining each critical juncture, transforming historical volatility into structured learning for future uncertainty.