Composite Leading Indicators and Their Application

Composite Leading Indicators Composite Leading Indicators (CLI) aggregate numerous economic variables that have historically preceded the turning points of the business cycle. These indicators help forecast the direction of the economy over a horizon of 6–12 months. Understanding the methodology and limitations of CLI is critically important for their proper use in investment analysis.

Methodology of Construction The OECD publishes CLI for 39 countries and regions. The methodology includes several stages: selection of components, normalization, aggregation. Components are selected based on their leading properties relative to the reference series (usually industrial production or GDP), economic relevance, and data quality. Typical components include: orders in manufacturing, building permits, business confidence indices, interest rate spreads, stock indices, working hours in manufacturing, claims for unemployment benefits.

The Conference Board publishes the Leading Economic Index (LEI) for the US and other countries. The methodology is similar, but differs in the set of components and weights. For the US, the LEI includes 10 components, among them: average duration of the working week, initial claims for unemployment benefits, orders for consumer goods, residential building permits, S&P 500 index, credit index.

Interpretation of Signals Changes in the direction of CLI signal a possible change in the phase of the cycle. A sustained decline of CLI from a peak precedes a recession, while a sustained rise from a trough indicates recovery. However, not every change in CLI translates into an economic turning point—false signals do occur.

The amplitude of the change is just as important as the direction. A deep drop in CLI predicts a more serious recession. Weak growth from troughs signals a feeble recovery. Normalized CLI allow comparison of amplitude between countries and periods.

Diffusion indexes show what proportion of components are rising. If CLI is rising but diffusion is declining (fewer and fewer components are positive), this signals a weakening momentum. Broad growth of components indicates a sustainable trend.

Limitations False signals are the main problem with CLI. The famous remark by Paul Samuelson: "The stock market has predicted nine of the last five recessions" also applies to CLI. A decline in the indicator may not lead to a recession if countercyclical policy offsets negative factors.

The lead horizon varies. CLI does not provide precise timing for economic turning points—the lead can be from 3 to 12 months. This creates a problem for tactical positioning—reacting too early can be costly.

Structural changes in the economy can disrupt historical patterns. The shrinking share of manufacturing, expansion of the services sector, changes in the financial system alter the behavior of traditional leading indicators.

Practical Application CLI are most useful for identifying the phase of the cycle and the general direction of the economy, not for precise timing. A sustained decline of CLI over several months is grounds for caution, even if economic data are still strong.

Comparison of CLI between countries helps to identify relative opportunities. If US CLI is falling while Europe's CLI is rising, this is an argument for overweighting European assets.

CLI should be used in combination with other sources of information—manager surveys (PMI), labor market data, financial conditions. Convergence of signals from different sources increases confidence in the forecast.