US stock market anomaly | Gold mining stocks fall before the market opens, Coeur Mining (CDE.US) drops more than 7%

According to the Wisdom Financial News app, on Friday, stocks of gold mining companies in the US fell before the market opened. Coeur Mining (CDE.US) dropped more than 7%, Kinross Gold (KGC.US) and Harmony Gold (HMY.US) fell more than 5%, and Gold Fields (GFI.US) fell more than 3%. On the news front, spot gold fell nearly 3%, breaking below $4,100 and currently trading at $4,053.