Manufacturing PMI Update: Is the Factory Sector Growing or Shrinking?

October 27, 2026 | ATN Trade & Finance

The headline answer is yes — the US factory sector is growing, and by the widest margin in more than four years. The September ISM Manufacturing PMI came in at 54.5%, the ninth consecutive month of expansion, and the S&P Global flash reading for October jumped to 56.0, a 53-month high. But within those strong numbers lies a more complicated story: prices are rising at nearly war-onset levels, supply chains are tightening again, the ISM chair is openly hedging on sustainability, and roughly 60% of September survey respondents submitted negative comments alongside a broadly positive headline. Here is a full breakdown of where the factory sector stands.

The ISM Reading: Nine Months of Growth, With Caveats

The Institute for Supply Management released its September 2026 Manufacturing PMI Report on October 1. The headline figure of 54.5% — anything above 50 signals expansion — was down just 0.1 point from August's 54.6%, but still corresponds to annualized real GDP growth of approximately 2.4% according to ISM's historical correlation model. Manufacturing has been in expansion territory every month since January 2026.

The five subindexes that feed the headline PMI showed a mixed picture. New Orders rose to 55.3%, up 1.6 points from August, growing faster for the ninth straight month. Production held at 56.7%, still in solid expansion but down 1.6 points — the second consecutive monthly decline in the production index. Employment climbed to 52.7%, up 1.5 points, growing faster for the third consecutive month after 32 months of straight contraction that preceded January 2026. Supplier Deliveries came in at 59.0% — a reading above 50 means deliveries are slowing, indicating stretched supply chains — and has been signaling slower deliveries for 10 months. Inventories tipped into contraction at 48.6%, falling two points from a brief expansion in August.

Twelve industries reported expansion in September, led by Electrical Equipment, Primary Metals, Computer and Electronic Products, Transportation Equipment, Machinery, and Chemical Products. Only two industries — Printing and Textile Mills — reported contraction.

The Prices Number Is the Alarm Bell

The one index that demands separate attention is Prices Paid. The September Prices index hit 77.9%, up 6.8 points from August's 71.1% and the highest reading since the early months of the US-Iran conflict. A reading this elevated means 58.6% of respondents — up 12.4 percentage points from August — reported paying higher input prices. ISM Chair Susan Spence attributed the jump to steel and aluminum costs, tariffs, and petroleum-based product prices elevated by the ongoing Middle East disruption. Brent crude near $110–$117 per barrel, combined with Section 338 tariffs stacking on Canadian metals and Section 232 steel and aluminum duties at 50%, is running directly through manufacturing input costs. Customers' Inventories have been "too low" for 24 consecutive months, which historically supports future production orders — but at current price levels, it also means restocking will happen at elevated cost.

Spence's public commentary was notably cautious for a period of nine consecutive months of growth. "A 0.1% decrease is nothing, but what if it is the start of something?" she said. On the order and backlog trend: "It has not given me confidence for a sustained and steady expansion." She added simply: "There are definitely reasons for concern." Approximately 60% of panelist comments submitted with the September report were negative, even as the headline PMI remained comfortably in expansion.

S&P Global Flash October: The Strongest Reading in 53 Months

The S&P Global flash US Manufacturing PMI — a preliminary estimate for October released on October 23 — painted an even stronger picture than the ISM's September data. The headline reading of 56.0 was up from September's 55.9 and marked the best operating conditions for US manufacturers since May 2022. The Manufacturing Output subindex came in at 55.8, a two-month low but still elevated.

New orders for manufactured goods rose to their highest level in over four and a half years. Export orders turned positive for the first time since June 2025 — a notable reversal given the tariff environment. Employment rose at the fastest pace since March 2012, meaning manufacturers are hiring at a rate not seen in 14 years. Backlogs of uncompleted orders rose at the fastest pace since May 2022, indicating that factories are busy enough that they cannot immediately fulfill all incoming demand.

The cost side matched the ISM's concern. Input costs rose at their fastest pace since November 2022. Supplier delivery times lengthened to their greatest degree since July 2022. Selling prices rose at the sharpest pace since August 2022. Respondents cited oil-based inputs, energy, freight, steel, aluminum, copper, tariffs, and supply shortages as drivers.

Chris Williamson, Chief Business Economist at S&P Global Market Intelligence, described the composite picture as a boom: "October's flash PMI data indicate that the US economy continues to boom at the start of the fourth quarter." His GDP growth estimate implied by the data is approximately 5% annualized for Q4, following roughly 4% in Q3. He characterized recent months as "the best growth spell for US businesses since early 2015," excluding the post-COVID reopening period. On inflation, he warned that the price increases "are the sharpest in over four years, pointing to consumer price inflation likely rising further above the Fed's target in coming months."

Canada: A Cooling Expansion

Canada's manufacturing sector is growing, but barely, and the trend is the wrong direction. The S&P Global Canada Manufacturing PMI came in at 51.5 in September, down from 53.0 in August. Still above 50, still in expansion — but moderating, and the Section 338 tariffs the US imposed in August are now running through Canadian input cost surveys. For manufacturers sourcing Canadian inputs, the cost pressure is bidirectional: US importers pay the Section 338 additional duties, and Canadian producers have responded by absorbing some portion or passing it through, with varying results by sector.

The Bottom Line on Factory-Sector Direction

The data for October 2026 is unambiguous on the headline: US manufacturing is expanding at its fastest pace in more than four years by the S&P Global measure, and at a solid rate of 54.5% by the ISM measure. Employment is recovering. New orders are strong. Backlogs are building.

What the data does not resolve is how durable this expansion is. The ISM chair herself expressed explicit uncertainty. A Chemical Products executive specifically flagged pull-forward purchasing and delayed price increases as drivers of better recent performance — effects that reverse. Prices Paid at 77.9% does not coexist easily with stable margins or controlled inflation. The Fed's September dot plot and current futures pricing both point to at least one more rate hike before year-end, and a monetary environment where rates may stay at 4%+ through 2027. Manufacturing has been able to absorb higher rates so far. The question for Q4 is whether the expansion is powered by genuine end-demand or by temporary dynamics that the numbers cannot distinguish from the outside.

What this means: For businesses tracking the industrial cycle — whether as suppliers to manufacturers, logistics providers, or companies with capex decisions tied to factory activity — the short answer is that the factory sector is growing, and growing fast. The ISM's 54.5% and S&P Global's 56.0% are not ambiguous readings. The longer answer is that the expansion carries unusually high price and supply-chain stress alongside it. Prices Paid at 77.9%, delivery times at multi-year highs, and an ISM chair openly questioning sustainability are not the usual accompaniments to a nine-month growth streak. The next ISM Manufacturing PMI report — covering October activity — publishes on November 2, five days from now. Given the S&P Global flash October print of 56.0, a strong headline is expected. Whether Prices Paid holds near 77.9% or climbs further will be the detail to watch.

Sources:

Manufacturing PMI Update: Is the Factory Sector Growing or Shrinking?

Manufacturing PMI Update: Is the Factory Sector Growing or Shrinking?

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