Corning declines 3% during regular trading as US optical stocks slide

康宁 (GLW.US) 盘中快速下挫，现跌2.61%，报143.44 美元。

美国光通信股开盘全线走低，康宁跌 3.51%，Lumentum 跌 3.71%，Coherent 跌 4.06%，Ciena 跌 4.19%，板块整体承压。