鑫元北证50成份指数型发起式证券投资基金基金合同公告日期:2026/03/26 · 栏目:基金合同 · 代码:026963公告链接:http://www.xyamc.com/upload/pdf/1774484622826-xinyuanbeizheng50chengfenzhishuxingfaqishizhengquantouzijijinjijinhetong.pdf