Business Cycle

Context & Mechanics

The four phases

The business cycle ideally runs through four phases: expansion (growing output, falling unemployment), peak (capacity utilised, price pressure rising), contraction (shrinking demand, in the pronounced case a recession) and recovery. In the US the NBER dates recessions officially – but only in retrospect, often many months after they begin. Cycle lengths vary widely; historically one to ten years lay between US recessions.

Indicators

Traders classify the phase via three indicator classes: leading indicators such as purchasing managers' indices (PMI, threshold 50), new orders and the yield curve turn before the economy. Coincident ones such as GDP describe the current state. Lagging ones such as labour-market data (NFP) and inflation confirm turns only late – the labour market is regularly still strong at the end of the cycle while leading signals are already turning.

Cycle and markets

The cycle phase shapes the market regime: the policy rate path follows the cycle, sectors rotate (cyclicals in the expansion, defensives in the downturn), and volatility rises in transition phases. Important is the lead logic of equity markets: prices reflect expectations and historically often turned around six months before the real economy – in both directions. Reading the stock market as a mirror of the current economy is a systematic misinterpretation.

Why it matters for traders

The business cycle is a regime filter, not a forecasting tool: it does not answer when the turn comes but which environment currently prevails – and thus which setups and risk budgets fit. In the GlanWick chart, historical cycle phases and market reactions can be traced by way of example – GlanWick is a training and simulation tool and not a prop firm itself.

Execution Example

The purchasing managers' index falls below 50 for the third month in a row, the yield curve has been inverted for months, and the labour market still reports solid numbers. A swing trader classifies the regime for setup selection.

Classification: leading signals (PMI 47, inverted curve) point to cooling; the lagging labour market is still robust – a typical late-cycle constellation.
Market picture: defensive sectors have been outrunning cyclicals for weeks, volatility jumps more sharply at data releases than before.
Regime consequence: trend-following setups in indices deliver weaker results, failed breakouts accumulate – the trader reduces risk per trade from 1% to 0.5%.
Protocol: instead of forecasting a recession, the trader defines markers (PMI recovery above 50, re-steepening of the curve) at which the risk budget is raised again.

Execution Risk & Errors

Treating cycle phases as precisely timeable signals

Reading lagging indicators such as the labour market as early warnings

Equating stock market and real economy although prices historically lead by around six months

Over-interpreting a single data point instead of considering indicator combinations

Ignoring regime changes in one's setup mix and trading identically in every phase

Frequently Asked

How long does a business cycle last?

It varies widely: historically one to ten years lay between US recessions. There is no fixed length – cycles end at shocks, rate tightening or imbalances.

Who officially determines whether a recession exists?

In the US the NBER (National Bureau of Economic Research) – but retrospectively, often many months after the recession begins. The rule of thumb of two negative GDP quarters is only an approximation.

Which indicators lead the cycle?

Purchasing managers' indices (PMI), new orders, building permits and the yield curve. The labour market and inflation lag and confirm turns only late.

What does the cycle mean for trading in practice?

It defines the regime: rate path, sector strength and volatility depend on the phase. Traders use it as a filter for setup selection and risk budget, not as a timing signal.