.S. manufacturing activity contracted more than expected in December, extending its slump to 10 straight months as new orders fell again and input costs kept grinding higher as the sector continues to bear the imprint of President Donald Trump’s import tariffs.

The Institute for Supply Management said on Monday its manufacturing PMI dropped to 47.9 in the final month of 2025 - the lowest since October 2024 - from 48.2 in November. A reading below 50 indicates contraction in manufacturing, which accounts for 10.1% of the economy. Economists polled by Reuters had forecast the PMI would be little changed at 48.4.