Economy March 31, 2026

South Korea's Manufacturing Activity Posts Strongest Expansion in Over Four Years, PMI Shows

Semiconductor demand and new product launches lift output in March even as export orders cool amid Middle East conflict

By Avery Klein
South Korea's Manufacturing Activity Posts Strongest Expansion in Over Four Years, PMI Shows

South Korea's manufacturing sector recorded its most robust expansion since February 2022 in March, driven by semiconductor demand and new product releases, the S&P Global purchasing managers index showed. While domestic momentum and product cycles supported output gains, export orders slowed as the Middle East war weighed on overseas demand. Input costs climbed sharply on higher oil prices and a weaker won.

Key Points

  • PMI rose to 52.6 in March from 51.1 in February, the strongest reading since February 2022 - impacts manufacturing and market sentiment.
  • Output expanded at the fastest rate since August 2024, led by semiconductors and new product launches - benefits the semiconductor and electronics sectors.
  • Export orders slowed to a four-month low because of the Middle East war, even as demand remained strong in the U.S. and Asia - affects exporters and trade-exposed manufacturers.

Seoul, April 1 - South Korea's factory sector expanded at its fastest pace in more than four years in March, propelled by semiconductor demand and the rollout of new products, according to a private-sector purchasing managers index published on Wednesday.

The PMI from S&P Global rose to 52.6 in March, up from 51.1 in February, marking the highest reading since February 2022.

Output showed notable strength, with manufacturers reporting the largest increase since August 2024. Firms attributed the rise primarily to new product launches and stronger orders for semiconductors.

"Anecdotal evidence suggested that a strengthening domestic economy and new product launches were behind the latest expansion in the manufacturing sector," said Usamah Batti, economist at S&P Global Market Intelligence.

Despite the headline improvement, new orders expanded at a slightly slower pace than in the prior month. Export order growth weakened to a four-month low as the Middle East war reduced overseas demand, even though companies continued to report strong orders from the U.S. and other parts of Asia.

Input costs climbed sharply in March, rising at the steepest rate since June 2022. Firms cited a surge in oil prices and a weak won as the main drivers of higher purchase costs.


Key details at a glance:

  • PMI: 52.6 in March, up from 51.1 in February, highest since February 2022.
  • Output: Biggest increase since August 2024, supported by semiconductors and new product launches.
  • New orders: Expansion slowed slightly; export orders at a four-month low due to the Middle East war despite strong demand in the U.S. and Asia.
  • Input prices: Sharpest rise since June 2022, linked to higher oil prices and a weaker won.

The PMI snapshot points to a manufacturing sector benefiting from domestic demand and product cycle dynamics, with the semiconductor industry a prominent contributor to the uptick in output. At the same time, external geopolitical developments and commodity price moves are constraining export momentum and pushing input costs higher for producers.


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Risks

  • Ongoing Middle East war is reducing export order growth, posing downside risk to export-oriented manufacturers and supply chains.
  • A surge in oil prices and a weaker won pushed input costs up at the fastest pace since June 2022, which could pressure margins in energy- and input-intensive sectors.
  • Slower expansion in new orders compared with the prior month may signal uneven demand conditions that could affect production planning in manufacturing and semiconductor supply chains.

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