Regulation · Nikkei 225 Index (2005)
Replay 144 trading days of Japan's 2005 corporate-fraud cleanup, watching the Nikkei 225 climb from 11966.69 to 13359.51 while navigating policy shocks. Step through each session, tackle 25 decision points including 9 critical ones, and receive an AI coach review of your simulated choices.
144 daily bars · 25 decision points · 2005-03 to 2005-10 · Stocks
Key facts
This window spans 211 days with a peak-to-trough drawdown of 9.5% and a 26.9% run-up.
- Max drawdown
- −9.5%
- Max run-up
- +26.9%
- Duration
- 211 days
- Largest single-day move
- −3.8%
- 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
In early 2005, Japan's stock markets faced a reckoning as regulatory authorities intensified scrutiny of corporate accounting practices. The Nikkei 225, Japan's flagship equity index, entered a period defined by revelations of financial fraud and the subsequent cleanup efforts. Over roughly seven months spanning from March to October, investors had to navigate an environment where policy announcements could strike suddenly, creating both danger and opportunity. The 144 trading days that followed became a proving ground for decision-making under regulatory uncertainty.
The index demonstrated resilience, climbing from 11966.69 to 13359.51, representing an 11.6% gain over the period. However, this ascent was far from smooth—the market experienced a maximum drawdown of 9.5% and faced individual sessions with moves as large as 3.8%. These sharp fluctuations tested the ability of participants to maintain composure when sudden policy shifts rattled sentiment. The gap between the headline return and the actual trading experience highlighted the importance of process over outcome prediction.
This replay offers valuable lessons in risk management and emotional discipline. Participants encounter 25 decision points, including 9 critical moments where policy surprises could have derailed unprepared strategies. The scenario emphasizes that surviving periods of regulatory volatility requires not just analysis but the psychological fortitude to act decisively when the market's direction shifts. Understanding how to position for and respond to policy-driven events separates disciplined traders from those who react impulsively.