Contango ORE is trading 5.8% lower at $17.47 amid broader materials-sector weakness; no company-specific catalyst has been reported. - The materials sector is down 1.55%, as higher yields pressure precious metals and renewed oil-price concerns weigh on the sector. - Reuters reported markets mostly lower as oil rose amid doubts over a U.S.-Iran truce. - Bitcoin is down 1.66% and Ethereum 0.52% since the prior close, but those moves do not explain the decline.