美股周一早盘，设计和开发光电解决方案提供商POET Technologies（POET）下跌2.2%，此前该公司宣布将通过定向增发筹集1.5亿美元，所筹资金将支持公司发展，包括收购和研发扩张。交易完成后，公司账面现金预计将超过3亿美元。

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