U.S. manufacturing activity improved in March, but the details pointed to a more complicated picture for factories and inflation. The Institute for Supply Management said its manufacturing PMI edged up to 52.7 from 52.4 in February. That marked the third straight month above 50, the line that separates expansion from contraction, and it was the strongest reading since August 2022.
- PMI: 52.7, up from 52.4
- Supplier deliveries: 58.9, up from 55.1
- Prices paid: 78.3, up from 70.5
The headline gain was helped in part by slower supplier deliveries, which can sometimes signal strong demand. This time, the move likely reflected disrupted supply chains rather than healthy operating momentum. The survey’s supplier deliveries index rose to 58.9, a sign that materials are taking longer to arrive. That strain showed up in costs. The survey’s prices paid measure climbed to 78.3, the highest level since June 2022, as factories paid more for inputs. The increase tracked a broader rise in producer goods prices and comes as shipping routes and commodity flows face pressure from the war in the Middle East.
- Crude prices have surged more than 50% since the conflict began at the end of February
- Shipments of fertilizers and aluminum have also been affected
- Shipping restrictions through the Strait of Hormuz are adding to supply concerns
The inflation backdrop matters because it shapes expectations for the Fed. Some economists think the war could keep inflation elevated this year and reduce the odds of interest-rate cuts. The U.S. central bank left its benchmark overnight rate in the 3.50%-3.75% range last month and projected higher inflation along with only one reduction in borrowing costs in 2026. Manufacturing still faces another headwind: tariffs. The sector accounts for 10.1% of the economy, but it has not seen the rebound once expected from import duties. The survey also showed some softening in demand and hiring.
- New orders fell to 53.5 from 55.8
- Backlog orders growth slowed
- Factory employment remained subdued
- Manufacturing jobs have fallen by 100,000 since January 2025
The mix of firmer activity, slower deliveries, and higher input costs leaves the factory sector in a tricky spot. Output is still expanding, but the cost pressure is rising at the same time that demand signals are losing some momentum. For markets, the key issue is whether supply shocks start to feed more broadly into inflation data. If that happens, it could keep the Fed cautious even if growth holds up. Investors will also watch whether new orders and factory hiring stabilize in the months ahead.
WSA Take
March’s factory data showed resilience, but not clean strength. The rise in the ISM manufacturing PMI was encouraging on the surface, yet it came alongside slower deliveries and a sharp jump in input costs. That combination is important because it can support headline activity while still squeezing margins and lifting inflation pressure. The softer new orders reading suggests demand is not accelerating fast enough to offset those cost risks. For now, the report points to a manufacturing sector that is growing, but under strain.
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