Collapse · S&P 500 Index (2008)
Replay the 2008 S&P 500 collapse across 144 daily bars as the index slid from 1239.49 to 832.23, a 32.9% decline. Walk through 25 decision points with AI coach feedback in a simulated, educational replay of authentic market history.
144 daily bars · 25 decision points · 2008-07 to 2009-02 · Stocks
Key facts
This window spans 208 days with a peak-to-trough drawdown of 42.4% and a 24.2% run-up.
- Max drawdown
- −42.4%
- Max run-up
- +24.2%
- Duration
- 208 days
- Largest single-day move
- +11.6%
- 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 the summer of 2008, the S&P 500 Index entered a period that would test the convictions of every investor holding equities. The market had already begun showing signs of strain as the subprime mortgage crisis rippled through financial institutions, yet the full scale of the dislocation remained uncertain. Over the following months, participants faced mounting uncertainty about the stability of the global financial system, with policy responses still evolving and the economic outlook deteriorating rapidly.
The numbers tell a stark story. Across 144 daily bars spanning July 11, 2008 to February 4, 2009, the index fell from 1239.49 to 832.23, a decline of 32.9%. The maximum drawdown reached 42.4%, and the largest single-bar move measured 11.6%, underscoring the extraordinary volatility. Participants confronted 25 decision points throughout this period, with 9 classified as critical, each requiring careful navigation of rapidly deteriorating conditions.
This replay is designed to sharpen judgment under pressure. It invites participants to experience how decisions unfold when the full picture remains obscured, when information arrives inconsistently, and when market moves can overwhelm rational analysis. The value lies not in predicting outcomes but in examining decision processes, managing risk exposure, and recognizing psychological tendencies during prolonged drawdowns. By confronting the authentic historical sequence without hindsight, participants can assess whether their discipline would have held when it mattered most.
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