Caterpillar is trading 4.8% down at $839.67 as U.S. equities weaken, with the S&P 500 down 0.67% and Nasdaq Composite down 1.49% on August 18, 2026.

  • No new company-specific announcement or downgrade was found for August 18.
  • Caterpillar’s official release archive lists its latest major update as the August 4 second-quarter report; the July 29 Baird downgrade is stale. The decline therefore appears primarily global, though its magnitude exceeds the broader indexes.