Manufacturing PMI Slips to 54.6 as New Orders and Imports Both Cool

The Institute for Supply Management's Manufacturing PMI came in at 54.6% in August, down a full point from July's 55.2%, according to the ISM Manufacturing PMI Report on Business released Sept. 1. The reading marks an eighth consecutive month of sector expansion and a 22nd straight month of overall economic growth by ISM's reckoning, but nearly every forward-looking sub-index moved down.

New orders fell three points to 53.7%. Backlog of orders dropped 3.2 points to 51.8%. Imports slid the most of any component, down from 55.7% in July to 52.5% in August. ISM Manufacturing Business Survey Committee Chair Susan Spence said the sector "remained in expansion territory, though it has lost ground in a number of key measures — namely, the New Orders, Backlog and Imports indexes."

Production held up better, at 58.3%, and supplier deliveries rose 40 basis points to 59.3% — a ninth straight month of slower deliveries, which ISM treats as a sign of continued strain further up the supply chain rather than of demand alone. Capital-expenditure lead times averaged 171 days industrywide; production-materials lead times averaged 84 days. The prices index held at 71.1%, meaning input costs have now risen for 23 consecutive months.

Fifteen of ISM's 18 tracked industries reported growth in August, led by primary metals, electrical equipment and appliances, and transportation equipment. Wood products and chemical products were the only two in contraction.

Sentiment among survey respondents split 42% positive to 58% negative — down from a roughly 2-to-1 positive tilt in July. Pricing volatility accounted for 57% of negative comments, extended lead times for 46%, tariff uncertainty for 29%, and Iran-conflict-related disruption for 30%, reported respondents cited in ISM's release.

Forwarder angle

Two things in this report matter more to freight buyers than the headline number:

Imports cooling is the number to watch for ocean and drayage capacity planning. The imports index falling more than three points, from 55.7% to 52.5%, is a leading signal for inbound container volume even though it's still technically in expansion territory. If it keeps softening into the fall, that's demand easing on the West Coast and East Coast gateway ports simultaneously — worth flagging against any capacity commitments made assuming peak-season strength holds.

Slower supplier deliveries cut two ways. A rising supplier-deliveries index usually reads as tightening capacity — but ISM's own respondent commentary this month points to electronics-sector supply chain strain rather than freight capacity constraints as the driver. The 171-day capital-equipment lead time is a sourcing-side number, not a trucking or ocean transit number; forwarders should treat this month's reading as a component-shortage signal more than a transportation-capacity one.