Hang Seng Tech Downtrend Replay (2021-06-28 to 2021-07-27)
Relive the 23.8% Hang Seng Tech drawdown from June to August 2021 across 42 daily bars, including a sharp 7.8% single-session plunge. Step through each decision point in this simulated replay and receive an AI coach review of your choices.
42 daily bars · 8 decision points · 2021-06 to 2021-08 · Stocks
Key facts
This window spans 61 days with a peak-to-trough drawdown of 23.8% and a 10.3% run-up.
- Max drawdown
- −23.8%
- Max run-up
- +10.3%
- Duration
- 61 days
- Largest single-day move
- +7.8%
- Bars
- 42 Daily bars
- Decision points
- 8
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 Hang Seng Tech Index entered a turbulent stretch in summer 2021, as tech valuations globally faced mounting headwinds. This replay spans 42 daily bars from June 10 to August 10, 2021—a period when investor sentiment shifted sharply and the index descended from elevated levels. Eight decision points punctuate the scenario, three deemed critical moments where positioning choices carried heightened consequence. Participants enter this replay to experience the pressures that defined that summer.
The closing level fell from 7.89 to 6.77, representing a -14.2% decline over the data span. More striking than the aggregate loss was the severity of individual sessions: the largest single-bar move reached 7.8%, and the maximum drawdown hit 23.8%—a level that would test even disciplined risk managers. These figures underscore how quickly paper losses can expand before stabilizing forces emerge, and why monitoring drawdown thresholds matters more than staring at headline percentages.
This replay sharpens three core competencies: process discipline under stress, risk calibration against actual volatility, and psychological resilience when positions move against you. The 7.8% single-session plunge and the 23.8% trough serve as concrete benchmarks for stress-testing one's sizing and stop-loss frameworks. Participants learn that surviving a drawdown requires both a sound system and the emotional fortitude to execute it when the environment feels hostile.