U.S. manufacturing extended its expansion streak in March 2026, posting the strongest growth in factory activity since mid-2022. Both the ISM Manufacturing PMI and the S&P Global Manufacturing PMI registered readings above 50, confirming a solid third consecutive month of growth. Production accelerated and new orders remained firmly in expansion territory. But the picture is far from uncomplicated.
A sharp surge in input costs—driven by the war in the Middle East, rising energy prices, and ongoing tariff pressures—pushed the ISM Prices Index to its highest level in nearly four years. Employment stubbornly remained in contraction for a 30th straight month, and survey respondents cited growing uncertainty from shifting trade policies and geopolitical conflict.
On the investment side, March delivered another round of major new factory and expansion announcements spanning 13 states and representing billions in committed capital. AI infrastructure, semiconductor manufacturing, defense production, and life sciences dominated the headlines, signaling a continued realignment of U.S. manufacturing around strategic, high-stakes industries.
A Month in Manufacturing Data
The ISM Manufacturing PMI registered 52.7 percent in March, up from 52.4 in February—the strongest reading since August 2022 and the longest expansion streak in years. Production was a standout at 55.1 percent, up from 53.5, with ten industries reporting growth. New orders held in expansion at 53.5 percent, though down 2.3 points from February. Of the six largest manufacturing industries, four—transportation equipment, computer and electronic products, machinery, and chemical products—reported increased new orders. However, demand sentiment weakened sharply, with positive-to-negative respondent comments falling to a 1-to-1 ratio after running two-to-one positive the prior month.
The most alarming signal came from prices. The Prices Index surged to 78.3 percent—a 7.8-point jump and its highest reading since June 2022. The nearly 20-point rise over just two months reflects intensifying cost pressures from steel and aluminum tariffs, rising energy costs tied to the Middle East conflict, and broad-based supplier price increases. Employment remained in contraction at 48.7 percent, continuing a 30-month streak. ISM chair Susan Spence noted that companies are holding staffing levels steady or increasing overtime rather than hiring. March also marked the first ISM report in which panelists explicitly cited the Middle East war as a direct business impact.
The S&P Global US Manufacturing PMI told a similar story, rising to 52.3 from 51.6 and extending the sector’s expansion to eight consecutive months. S&P Global placed particular emphasis on the conflict’s supply chain effects: average delivery times deteriorated to their worst since October 2022 as transportation disruptions worsened existing shipping and port congestion. Input price inflation surged to its highest since last August. Some order strength reflected precautionary safety stock building rather than organic demand, with purchasing activity hitting its joint-highest level since June 2025. Employment was essentially flat, and business confidence softened slightly as companies weighed the longer-term impacts of higher energy prices and tariff uncertainty.
Together, the surveys paint a picture of genuine growth under mounting stress. The ISM’s March reading corresponds to an estimated 1.8-percent annualized increase in real GDP, and the three-month expansion run is the longest in years. But the Prices Index at a four-year high signals significant margin pressure, weakening demand sentiment suggests fragility beneath the headline numbers, and the persistent employment contraction—now approaching three years—underscores that manufacturers are expanding output without adding workers.
Major New Factory and Expansion Announcements
Despite survey-level uncertainty, corporate investment showed no signs of slowing. Major announcements in March spanned defense, AI, life sciences, food manufacturing, and industrial automation.
Tesla and SpaceX are advancing Terafab, a major semiconductor initiative in the Austin, Texas region focused on producing next-generation AI chips for autonomous systems and high-performance computing. The project represents a significant push toward vertical integration and domestic semiconductor capacity.
Belgian pharmaceutical company UCB announced a $2 billion investment to build its first U.S. biologics manufacturing facility in Gwinnett County, Georgia. The 460,000-square-foot campus will create approximately 330 permanent jobs and serve as UCB’s primary U.S. biologics hub.
CSL broke ground on a $1.5 billion expansion of its Kankakee, Illinois facility to expand production of plasma-derived therapies, expecting to create at least 300 new jobs. Chobani committed to a $567 million multi-phase expansion of its La Colombe plant in Norton Shores, Michigan, adding over 200,000 square feet and nearly 340 jobs.
Hadrian opened a new advanced manufacturing facility in Cherokee, Alabama supporting the U.S. Navy’s Columbia- and Virginia-class submarine programs, with potential for up to 1,000 jobs at full capacity.
Additional notable investments included Valeo’s $225 million software-defined vehicle plant in Texas, Hyundai Translead’s two new Illinois trailer plants creating 2,500 jobs, Conagra’s $220 million frozen food expansion in Arkansas, IKO’s $500+ million fiberglass facility in South Carolina, and Crusoe’s modular AI factory site in Colorado. The breadth of these announcements underscores the diversity of the current domestic manufacturing investment cycle.
Future Outlook
March 2026 captures U.S. manufacturing at an inflection point. The sector is unambiguously growing, posting its strongest expansion in nearly four years, and corporate capital continues to flow into domestic production across AI, defense, semiconductors, and life sciences. The pipeline of new facilities announced in Q1 alone points to meaningful capacity additions in 2027 and 2028.
But the expansion is navigating increasingly difficult conditions. The Prices Index surge is a warning on margins and potentially on demand—if costs remain elevated, manufacturers face the familiar squeeze of passing through prices or absorbing margin erosion. The Middle East conflict is straining supply chains and lifting energy costs with no clear end in sight. On trade, the Supreme Court’s invalidation of IEEPA tariffs removed one source of uncertainty but left Section 122 tariffs intact through late July alongside ongoing Section 301 investigations.
The coming months will be pivotal. If energy prices stabilize and supply disruptions ease, the expansion has underlying momentum to continue. If cost pressures escalate, the safety stock building observed in March could give way to an order correction. The sector’s ability to sustain growth depends on how quickly these external headwinds either resolve or intensify.
