美股周五盘前，医疗器械公司库珀医疗（Cooper Companies，COO）股价大涨13.6%，此前该公司发布了强劲的季度财报，并提供了乐观的全年盈利指引，同时更新了长期自由现金流目标，预计将超过22亿美元。

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