Endeavour Silver is trading 4.01% down at CA$12.20 as silver-market weakness coincides with higher oil prices and rising yields, which increased rate-hike concerns. - On September 29, silver was reported down 1.3%; a metals-market report said climbing Treasury yields were weighing on precious metals. - Endeavour Silver closed at CA$12.71 on September 28, down 4.36%; no clear company-specific catalyst for the decline surfaced.