Lagging Economic Index: Latest Reading, Historical Chart & Investor Guide

Indicator Snapshot

What Lagging Economic Index Measures

Conference Board Lagging Economic Index measures business cycle conditions that confirm turning points after they have occurred. The indicator is published by The Conference Board on a monthly basis and is one of the primary datasets used by investors and economists to monitor this area of the economy.

Composite index from the Conference Board of seven economic indicators that tend to change after the business cycle has turned. It is meant to confirm that a peak or trough has occurred rather than to forecast one, and it is expressed with a fixed base year set to 100.

Why Investors Watch Lagging Economic Index

It is used to confirm turning points that other indicators have flagged, and the ratio of the coincident to the lagging index is sometimes read as a cycle signal. It helps show whether late-cycle cost and credit pressures are building.

The indicator's impact on financial markets depends on multiple factors: whether the reading was expected, the current economic regime, central bank policy stance, and investor positioning. A single data point is rarely sufficient to draw firm conclusions.

How Lagging Economic Index Is Calculated

The index combines seven components: average duration of unemployment, the inventories-to-sales ratio, change in unit labor costs, the average prime rate, commercial and industrial loans, the ratio of consumer installment credit to income and the change in the CPI for services. Monthly changes are weighted by volatility-based standardization factors and chained into an index.

The official methodology documentation from The Conference Board describes the full calculation process including sample design, weighting and revision procedures.

Reference: The Conference Board: Lagging Economic Index data and methodology

Release Schedule and Revisions

Lagging Economic Index is typically released monthly by The Conference Board. Release dates are announced in advance through the official release calendar. Investors should monitor both the scheduled release dates and any unscheduled revisions.

Economic data is frequently revised as additional information becomes available. Initial releases may be revised materially in subsequent publications. Tracking revision patterns alongside absolute levels can provide additional insight into data quality and economic momentum.

How to Interpret Lagging Economic Index Changes

When analyzing Lagging Economic Index data, investors should consider multiple dimensions simultaneously:

• A rising index suggests the expansion has been in place long enough for its lagging components to catch up, and a decline signals that a downturn is already underway. It confirms rather than forecasts.
• Compare it with the leading and coincident indexes. The Conference Board has also followed the ratio of coincident to lagging indexes as a rough signal of cycle position.
• A common error is using it to predict turning points. Because its parts react after the cycle turns, a change in the lagging index usually arrives late.

Market Impact of Lagging Economic Index

Lagging Economic Index can influence multiple asset classes depending on its implications for economic growth, inflation, and monetary policy:

• Equities: Changes in Lagging Economic Index can affect earnings expectations, discount rates and sector rotation preferences.
• Fixed income: The indicator may influence Treasury yields and credit spreads depending on its monetary policy implications.
• Currency markets: Divergence in Lagging Economic Index across economies can affect relative currency valuations.
• Commodities: Economic activity indicators can affect commodity demand expectations and prices.

Historical Context

Conference Board Lagging Economic Index has a long history that provides context for interpreting current readings. Key reference points include major economic cycles, recessions, recovery periods and policy regime changes. Historical comparison helps investors avoid placing excessive weight on any single data point outside its longer-run context.

Investors should be aware that methodology changes over time can affect comparability across long historical periods. The official The Conference Board documentation will note any significant definitional or methodological changes.

Limitations of Lagging Economic Index

Like all economic indicators, Lagging Economic Index has limitations that investors should understand before drawing conclusions:

• Some components, such as the prime rate and the consumer credit ratio, respond to policy decisions and lending behavior as much as to the cycle, which blurs the signal.
• The component set and standardization factors have been revised over time, and published values are revised with component data, so older vintages are not like for like.
• No single indicator captures the full complexity of economic conditions, so read this series next to the ones linked below.

Related Economic Indicators

Lagging Economic Index is best interpreted alongside related indicators that provide complementary perspectives on business cycle conditions that confirm turning points after they have occurred. Confirming or diverging signals across related indicators help investors form more robust views of the economic environment.

• Leading Economic Index
• Coincident Economic Index
• Inventory-to-Sales Ratio
• C&I Loans

See the Business Cycle And Financial Conditions indicators section and the Macro & Market Regimes hub for broader context and related data.