美股周二遭遇全线抛售潮，能源设备供应商华高(NOV)股价重挫3.40%，收报12.80美元。大盘方面，标普500指数下跌0.40%至6243.76点，道琼斯工业平均指数下挫0.98%收于44023.29点。
该股已连续第三日收跌，当前股价较7月31日创下的52周高点21.20美元大幅缩水39.62%。相较于同业公司，华高当日表现明显落后：斯伦贝谢(SLB)下跌3.18%至35.07美元，贝克休斯(BKR)下跌2.21%收于38.99美元，哈里伯顿(HAL)则下挫2.86%报21.39美元。
市场交投方面，华高当日成交量310万股，较其50日平均成交量390万股显著萎缩80.97万股。当前市场对能源服务板块维持谨慎态度，投资者正密切关注油价波动对产业链企业盈利预期的影响。
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