A correction, defined as a 10% decline from the top, is underway in every sector of the S&P 500. The Industrial sector went into correction three days ago and is just under the 10% threshold today.

Sector by Sector Analysis

S&P 500: Down 3.75% today, 10.2% from January high
XLB Materials: Down 3.51% today, 10.5% from January high
XLU Utilities: Down 1.12% today, 16.1% from November
XLK Technology: Down 4.14% today, 10.4% from January high
XLI Industrials: Down 3.86% today, 9.8% from January high
XLV Health Care: Down 3.47% today, 11.8% from January high
XLRE Real Estate: Down 3.13% today, 12.6% from November high
XLE Energy: Down 3.02% today, 14.9% from January high
XLF Financials: Down 4.40% today, 10.5% from January high