周二美股交易时段，PPG工业公司(PPG)股价下跌1.78%至114.29美元，延续了近期疲软走势。当日大盘整体承压，标普500指数下跌0.40%至6243.76点，道琼斯工业平均指数跌幅达0.98%，收于44023.29点。
此次下跌标志着该股连续第三个交易日收跌。目前股价较去年9月27日创下的52周高点137.24美元仍有16.72%的差距。
与同业竞争对手相比，PPG当日表现呈现分化态势：
- 3M公司(MMM)下跌0.84%至156.59美元
- 宣伟公司(SHW)下跌1.58%至339.05美元
- 马斯科公司(MAS)跌幅达2.23%，收报64.44美元
当前股价已跌破关键支撑位，创近三个月新低。技术指标显示短期仍处下行通道，成交量较前五个交易日均值放大12%，暗示抛压持续增强。行业分析师指出，建筑涂料需求疲软可能对主营工业涂料的PPG构成持续压力，而其主要竞争对手宣伟在民用涂料领域的优势地位或加剧市场竞争格局。
值得注意的是，虽然主要股指均收跌，但PPG的跌幅远超大盘指数。该股相对强弱指标(RSI)已进入超卖区域，部分技术派交易员开始关注短线反弹机会。不过基本面分析师仍持谨慎态度，认为需观察下季度财报中原材料成本传导能力是否改善。
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