Rebar Historical Replay: 2021-05 to 2021-08
Step into a 66-trading-day Chinese rebar window where prices swung from 5112 to 5102 with a 12.8% drawdown. Replay each session in FinFable, face 12 decision points, and receive an AI coach review of your simulated choices.
66 daily bars · 12 decision points · 2021-05 to 2021-08 · Commodities
Key facts
This window spans 94 days with a peak-to-trough drawdown of 12.8% and a 23.3% run-up.
- Max drawdown
- −12.8%
- Max run-up
- +23.3%
- Duration
- 94 days
- Largest single-day move
- −5.6%
- Bars
- 66 Daily bars
- Decision points
- 12
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 Chinese rebar futures market entered a turbulent chapter in the spring of 2021, when policy signals surrounding the "black series" commodities prompted sharp reversals after a sustained rally. Over 66 trading days spanning May 21 to August 23, 2021, traders faced a market that had already experienced significant gains and now confronted regulatory headwinds. This replay captures the tension between momentum trading and the need to respond swiftly when policy shifts alter market fundamentals.
Price action during this period proved deceptive: closing at 5112 on the first day and 5102 on the final day, the market delivered a net change of just -0.2%. Yet this superficial stability concealed a 12.8% maximum drawdown and intraday swings of up to 5.6%, creating multiple trap scenarios for undisciplined participants. With 12 decision points—4 deemed critical—traders were repeatedly forced to choose between holding positions through volatility and repositioning defensively.
This replay sharpens three essential skills. First, position sizing becomes paramount when drawdowns can reach double digits without a directional break. Second, the psychological discipline to avoid overreacting to single-bar spikes separates measured responses from panic exits. Third, recognizing that policy-driven markets require flexible frameworks, not rigid forecasts, prepares traders for real-world complexity beyond technical analysis alone.
Featured in the archive