Logistics Managers' Index: Latest Reading, Historical Chart & Investor Guide

Indicator Snapshot

What Logistics Managers' Index Measures

Logistics Managers' Index measures logistics and supply chain activity across inventories, warehousing and transportation. The indicator is published by Council of Supply Chain Management Professionals on a monthly basis and is one of the primary datasets used by investors and economists to monitor this area of the economy.

Monthly diffusion index of conditions in the U.S. logistics industry, built from a survey of supply chain executives. A reading above 50 indicates that logistics activity is expanding and below 50 indicates that it is contracting.

Why Investors Watch Logistics Managers' Index

It shows pressure points in the movement and storage of goods, such as warehouse capacity and freight prices, that other indicators capture only indirectly. It is used to assess supply chain strain, freight costs and goods inflation.

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 Logistics Managers' Index Is Calculated

The overall index is a weighted average of eight component indexes covering inventory levels and costs, warehousing capacity, utilization and prices, and transportation capacity, utilization and prices. Each component comes from respondents reporting whether the item rose, stayed the same or fell versus the prior month, and the figures are seasonally adjusted.

The official methodology documentation from Council of Supply Chain Management Professionals describes the full calculation process including sample design, weighting and revision procedures.

Reference: Council of Supply Chain Management Professionals: Logistics Managers' Index data and methodology

Release Schedule and Revisions

Logistics Managers' Index is typically released monthly by Council of Supply Chain Management Professionals. 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 Logistics Managers' Index Changes

When analyzing Logistics Managers' Index data, investors should consider multiple dimensions simultaneously:

• Above 50 indicates logistics activity expanding on balance and below 50 contracting. It covers inventories, warehousing and transportation, so it tracks the movement of goods through the economy.
• Read its components alongside the headline. Inventory costs, warehousing prices and transportation prices often move differently, and a price-driven rise can lift the index without more volume.
• It reports breadth of change rather than size, and a reading of 60 is not 10 percent growth. Compare it with freight volumes for the quantity of goods moved.

Market Impact of Logistics Managers' Index

Logistics Managers' Index can influence multiple asset classes depending on its implications for economic growth, inflation, and monetary policy:

• Equities: Changes in Logistics Managers' 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 Logistics Managers' Index across economies can affect relative currency valuations.
• Commodities: Economic activity indicators can affect commodity demand expectations and prices.

Historical Context

Logistics Managers' 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 Council of Supply Chain Management Professionals documentation will note any significant definitional or methodological changes.

Limitations of Logistics Managers' Index

Like all economic indicators, Logistics Managers' Index has limitations that investors should understand before drawing conclusions:

• The index has a short history, starting in the late 2010s, so it covers few full economic cycles and its relationship to GDP and recessions is less established.
• It is a survey of supply chain executives with a modest sample, and capacity and price components can reflect a few large carriers or shippers.
• No single indicator captures the full complexity of economic conditions, so read this series next to the ones linked below.

Related Economic Indicators

Logistics Managers' Index is best interpreted alongside related indicators that provide complementary perspectives on logistics and supply chain activity across inventories, warehousing and transportation. Confirming or diverging signals across related indicators help investors form more robust views of the economic environment.

• Freight TSI
• Cass Freight Shipments
• Truck Tonnage Index
• Global Supply Chain Pressure Index

See the Energy Supply Chain And Logistics indicators section and the Macro & Market Regimes hub for broader context and related data.