金融界2月27日消息，A股三大指数收盘涨跌不一，中证高等级绿色债券指数 (高等级绿债，932248)报135.98点。
数据统计显示，中证高等级绿色债券指数近一个月下跌0.05%，近三个月上涨0.50%，年至今下跌0.17%。
据了解，中证高等级绿色债券指数从交易所或银行间市场上市的绿色债券中，选取信用评级为AA+及以上、中证隐含评级AA及以上的债券作为指数样本，以反映高等级绿色债券的整体表现。该指数以2016年12月30日为基日，以100.0点为基点。
从债项评级分布来看，中证高等级绿色债券指数持仓10.54%为无评级债券，0.74%为“AA”级债券，5.83%为“AA+”级债券，82.89%为“AAA”级债券。
资料显示，该指数样本每月调整一次，定期调整生效日为每月首个交易日。遇临时调整时，若样本发生摘牌等事件，视情况自事件生效之日起剔除出指数；样本发生其他事件，参照计算与维护细则处理。
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