LME Trading Halt Hits Metals Markets From Aluminum to Zinc

Electronic trading was abruptly halted across all contracts on the London Metal Exchange (LME), freezing markets for aluminum, zinc, and other key commodities. The outage left dealers unable to execute orders or access pricing data, disrupting global metals trading as participants awaited official explanations. Occurring in March 2026, the suspension affected all electronic platforms, with no immediate timeline for restoration provided by exchange operators. No cause was disclosed, leaving traders speculating about technical failures, cyber incidents, or systemic issues behind the unprecedented shutdown. The halt underscores vulnerabilities in critical financial infrastructure, raising concerns about market stability and the resilience of electronic trading systems.