Copper Historical Replay: 2021-05 to 2021-08
Copper's 2021 boom-cool swing shaved 8.2% off closes between May and August, with a 13.7% drawdown testing even seasoned hands. Replay the 64 days bar by bar, face 11 decision points, and let the AI coach grade your calls—purely simulated training.
64 daily bars · 11 decision points · 2021-05 to 2021-08 · Commodities
Key facts
This window spans 91 days with a peak-to-trough drawdown of 13.7% and a 10.3% run-up.
- Max drawdown
- −13.7%
- Max run-up
- +10.3%
- Duration
- 91 days
- Largest single-day move
- −4.8%
- Bars
- 64 Daily bars
- Decision points
- 11
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
Copper prices were on a wild ride in the summer of 2021. The base metals complex, particularly copper, was caught in the crossfire of post-pandemic demand surges, supply bottlenecks, and tightening expectations. Between May 21 and August 20, 2021, traders faced a market that could swing violently on policy whispers and economic data surprises. This 64-day window tested everyone's conviction and risk management in a decade defined by unprecedented policy experiments.
The close price slipped from 4.5 to 4.13, a decline of -8.2%. But the headline number obscures the real story—a max drawdown of 13.7% that swept through positions with brutal efficiency. The largest single-bar move of 4.8% reminded traders that momentum can evaporate in a single session. Across the 64 daily bars, the market presented 11 decision points, with 4 deemed critical for navigating the reversal.
This replay distills the essence of decision training under uncertainty. The 13.7% max drawdown shows why stops matter—not as prophecy but as process. The 11 decision points, 4 critical, reveal that market turns rarely announce themselves clearly. Traders learn to manage size, control emotion, and respect volatility without being paralyzed by it. Purely simulated, this training grounds you in history without risking real capital.
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