美股午盘分化：道指涨约0.4%领跑，芯片股跌2.7%拖累纳指
纽约10月12日（周一）午盘——美股三大指数走势分化。据《巴伦》、MarketWatch与The Motley Fool午盘报道，截至美东时间中午前后，道琼斯工业平均指数涨约0.4%，报约51,860点；标普500指数大致持平、微跌约0.03%；纳斯达克综合指数跌约0.28%。表面平静之下，板块轮动明显：费城半导体指数重挫约2.7%，科技板块跌约1.18%，成为主要拖累；能源板块涨约1.4%、通信服务涨约1.09%、金融板块涨约0.75%，标普500十一大板块中有九个上涨。
市场人士指出，资金正从高估值成长股转向价值股与分红股。尽管上涨板块占多数，纽约证交所与纳斯达克的下跌家数仍多于上涨家数，显示行情宽度并不扎实。当天是哥伦布日联邦假日，美国债市休市一天，股市照常交易，缺少国债收益率这一近期最敏感的驱动因素，指数波动因此受限。油价方面，布伦特原油报约每桶105.58美元，美国原油升至约106美元；黄金报约每盎司4,192.70美元，跌约0.56%。
本周日程密集：9月消费者价格指数（CPI）将于周三公布，生产者价格指数（PPI）周四公布；三季度财报季周二由大银行打头阵，摩根大通、联合健康、富国银行、高盛与强生等将率先发布业绩。分析人士认为，通胀数据与银行财报将共同决定市场下一步方向。
来源：Barron's、MarketWatch、The Motley Fool 2026年10月12日午盘报道；GSM综合改写。
Midday Split on Wall Street: Dow Up About 0.4% as a 2.7% Chip Selloff Weighs on the Nasdaq
NEW YORK, Monday, Oct. 12, midday — U.S. stocks split at midday, according to Barron's, MarketWatch and The Motley Fool. The Dow Jones Industrial Average rose about 0.4% to around 51,860, the S&P 500 was roughly flat, down about 0.03%, and the Nasdaq Composite fell about 0.28%. Beneath the calm headline numbers, rotation was sharp: the Philadelphia semiconductor index dropped about 2.7% and the technology sector lost about 1.18%, while energy gained about 1.4%, communication services about 1.09% and financials about 0.75%. Nine of the S&P 500's 11 sectors advanced, yet decliners still led advancers on both the NYSE and Nasdaq.
Traders were rotating into value and dividend stocks and away from growth. Trading took place without the bond market, which was closed for the Columbus Day federal holiday, removing Treasury yields — a key recent driver — from the session. Brent crude traded near $105.58 a barrel and U.S. crude rose to about $106, while gold slipped about 0.56% to roughly $4,192.70 an ounce.
The week ahead is crowded: September CPI is due Wednesday and PPI on Thursday, while third-quarter earnings season opens Tuesday with JPMorgan Chase, UnitedHealth, Wells Fargo, Goldman Sachs and Johnson & Johnson among the first major reporters.
Sources: Barron's, MarketWatch and The Motley Fool midday reports, Oct. 12, 2026; rewritten by GSM.
图片来源：图片 Image: Billie Grace Ward, Sign of the New York Stock Exchange, Broad Street, CC0, via Wikimedia Commons
