Bubble · Shanghai Composite Index (2021)
Shanghai Composite Index drifted only -0.7% from 3565.91 to 3540.38 across 150 daily bars, yet suffered a 9.2% drawdown fueled by policy shifts and bubble unwinds. Replay each trading day, face 26 decision points including 9 critical ones, and receive an AI coach review in this simulated educational scenario.
150 daily bars · 26 decision points · 2021-01 to 2021-08 · Stocks
Key facts
This window spans 223 days with a peak-to-trough drawdown of 9.2% and a 8.0% run-up.
- Max drawdown
- −9.2%
- Max run-up
- +8.0%
- Duration
- 223 days
- Largest single-day move
- −2.5%
- 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 Shanghai Composite Index entered 2021 as China’s new energy sector attracted concentrated institutional capital, forming the so-called "bubble" dynamic. From January 14 to August 25, 2021, policy signals shifted repeatedly while market sentiment swung between euphoria and anxiety. The period presented traders with a deceptive environment where apparent stability masked deeper structural tensions.
Across 150 daily bars, the index closed at 3540.38 from 3565.91, a mere -0.7% decline. Yet this flat headline number concealed a 9.2% maximum drawdown and a largest single-bar move of 2.5%, revealing that the path was far calmer in appearance than in reality. Twenty-six decision points, nine of them critical, demanded continuous recalibration as policy announcements and sector rotations tested positions.
This scenario trains traders to resist anchoring on surface-level calm. The gap between modest net performance and substantial intra-period swings illustrates how drawdown risk persists even in rangebound markets. Participants practice reading policy-driven inflection points, managing risk under uncertainty, and maintaining psychological discipline when a -0.7% outcome contains a 9.2% valley. The lesson: disciplined process matters more than outcome labels in volatile policy environments.