S&P 400 MidCap Downtrend Replay (1985-07-17 to 1985-10-08)
A 9.8% midcap drawdown between July and October 1985 offers a rare window into correction-era volatility for learners. You replay the daily tape, navigate 11 decision points, and receive an AI coach review after each simulated step.
116 daily bars · 11 decision points · 1985-06 to 1985-11 · Stocks
Key facts
This window spans 164 days with a peak-to-trough drawdown of 9.8% and a 9.7% run-up.
- Max drawdown
- −9.8%
- Max run-up
- +9.7%
- Duration
- 164 days
- Largest single-day move
- −1.5%
- Bars
- 116 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
The S&P 400 MidCap index in the summer of 1985 offered a window into a particular corner of the US equity market often overlooked during calmer periods. Between July 17 and October 8 of that year, the mid-cap space entered a correction phase, placing market participants squarely inside a multi-month challenge that demanded both analytical rigor and emotional steadiness. For those training their decision-making, this was a compressed lesson in how prolonged uncertainty tests even well-reasoned positions.
Over the full data span from June 4 to November 15, the close moved from 58.82 to 61.94, representing a 5.3% gain. Yet this outcome obscured a more turbulent journey: the market endured a maximum drawdown of 9.8% and navigated its largest single daily move of 1.5% during the drawdown period. Across 116 daily bars, participants faced 11 decision points, with 4 deemed critical junctures where positioning choices carried heightened consequence.
The scenario distills several hard lessons for decision trainees. First, the gap between peak and trough—9.8%—demonstrates how a correction that stops short of a bear market can still exact a psychological toll that tempts premature exits. Second, the 1.5% single-bar volatility highlights the danger of intraday anchoring, where a single large move can distort longer-term perspective. Finally, the eventual positive outcome reminds practitioners that surviving volatility is not merely about endurance; it requires disciplined process, clear risk thresholds, and the emotional capacity to distinguish temporary pressure from structural failure. This 1980s correction remains a disciplined training ground for exactly those skills.
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