MTZ is trading 4.9% down today at $395.76 driven by a Zacks Research downgrade to 'Hold' and continued selling following its removal from the Russell 1000 Value Index. - Zacks Research downgraded MasTec from a 'Strong-Buy' to a 'Hold' rating on July 1, 2026, signaling a revised outlook. - The recent Russell 1000 Value Index removal, effective June 29, 2026, continues to prompt passive funds to unload shares, contributing to downward pressure.