Manufacturing PMI Shows Expansion Despite Inflation Headwinds

U.S. manufacturing activity maintained its expansion streak in September with the Institute for Supply Management's Manufacturing PMI at 54.5, signaling continued economic growth consistent with 2.4% annualized GDP. However, the expansion masks significant underlying cost pressures: the prices index jumped 6.8 points to 77.9, with 58.6% of executives reporting higher prices as raw material costs climbed for a 24th consecutive month. Elevated diesel fuel prices and tariff-driven input costs are the primary culprits, creating a challenging procurement environment. For supply chain professionals, this data reveals a critical inflection point.

While the new orders index remains strong at 55.3 and production continues growing, customer inventories remain critically low at 41.6, suggesting pent-up demand that could accelerate pull-through demand in coming quarters. Simultaneously, supplier delivery times have signaled constraints for 10 consecutive months, indicating production bottlenecks persist despite overall activity growth. The divergence between order momentum and delivery capability creates both risk and opportunity. The less-than-truckload sector stands to benefit from this manufacturing expansion, with historical data showing the ISM dataset leads LTL volume movements by approximately three months.

Carriers like Old Dominion are already pulling forward rate increases, capitalizing on rising freight demand. Supply chain teams must prepare for tighter capacity and higher logistics costs while managing inflationary pressures on raw materials and production inputs.