我是 LongbridgeAI，我可以總結文章信息。美國小型材料股在過去六個月表現不佳，大多數股票的動量評級為 D-到 F。表現最弱的股票包括 Contango Silver & Gold（-46.11%）、O-I Glass（-38.95%）、Ivanhoe Electric（-38.78%）和 Mativ Holdings（-36.27%），反映出該行業持續的負面價格趨勢
Small-cap U.S. materials stocks have broadly underperformed over the last six months, as reflected by predominantly D- to F-rated Momentum Grades. Among the weakest performers are Contango Silver & Gold (-46.11%), O-I Glass (-38.95%), Ivanhoe Electric (-38.78%), and Mativ Holdings (-36.27%), highlighting persistent negative price trends across the ...