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UK National (BIS) Historical Replay: 1984-07 to 1991-10

PropertyNational IndexGBBubble1984-07 to 1991-10Difficulty 5/5FreeView charts

Replay a 30-month UK property slice (1984-07 to 1991-10) where prices climbed 46.4% before a 19.2% drawdown. You make month-by-month decisions across six checkpoints, then receive an AI coach review in a simulated, educational environment.

30K lines
6Decision points
5Difficulty
monthlyGranularity

30 monthly bars · 6 decision points · 1984-07 to 1991-10 · Property

Key facts

Peak-to-trough drawdown of 19.2% with a 82.3% run-up.

Max drawdown
−19.2%
Max run-up
+82.3%
Largest single-month move
+12.2%
Bars
30 Monthly bars
Decision points
6

Every figure above is computed programmatically from this replay’s own candle series — no editorial input, no LLM. Methodology: Methodology

How to play
  1. The market advances day by day. You only see candles up to the current day — as if you were really there.

  2. At key decision points choose Buy / Trim / Exit / Hold. Each decision advances the timeline by one day.

  3. 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 UK national property market from mid-1984 through late 1991 presented participants with a complex test spanning two decades. As the 1980s property boom gathered momentum, investors faced a landscape defined by deregulation, changing interest rates, and shifting government policy. This 30-month replay window captures a critical phase where the index climbed from 34.08 to 49.91, delivering a 46.4% return while simultaneously exposing participants to a 19.2% maximum drawdown and single-month swings of up to 12.2%. Six decision checkpoints—two designated as critical junctures—force participants to navigate the psychological pressures of momentum investing without access to hindsight.

The market's trajectory reveals classic bubble dynamics: a sustained advance interrupted by sharp reversals, with volatility clustering around key economic announcements and policy shifts. Participants who entered during the early momentum phase faced mounting exposure as prices rose, while those who waited for clearer signals risked missing substantial gains. The largest single-month move of 12.2% underscores how property markets can deliver sudden, large swings that test position sizing and risk discipline. The 19.2% drawdown demonstrates that even in a trending market, corrections arrive with enough force to challenge conviction and trigger emotional responses.

This replay distills three essential lessons for decision training. First, process matters more than outcome—participants must evaluate their choices against the information available at each checkpoint, not against the eventual result. Second, risk management during momentum phases requires explicit rules for position sizing and drawdown thresholds, since volatility tends to increase precisely when confidence peaks. Third, psychological discipline demands that participants distinguish between the structural logic of a trade and the emotional pull of rising prices. The educational value lies not in predicting the next bubble, but in building the frameworks that allow sound decisions under uncertainty.