来源:[1] Hecla Mining Company 将加入标普中盘400指数 - Yahoo Finance (https://finance.yahoo.com/news/hecla-mining-c ...)[2] 美国银行在标普500指数纳入公告后上调 Carvana 目标价 - CNBC (https://www.cnbc.com/2025/12/08/bank-of-ameri ...)[3] Hecla Mining Company 将加入标普中盘400指数 - NationTalk (https://nationtalk.ca/story/hecla-mining-comp ...)