KeyBanc downgrades Materion stock to Sector Weight on demand uncertainty By Investing.com 2025-10-30 editor Finance, investing 0 KeyBanc downgrades Materion stock to Sector Weight on demand uncertainty Source: https://www.investing.com/news/analyst-ratings/keybanc-downgrades-materion-stock-to-sector-weight-on-demand-uncertainty-93CH-4317999 READ from source