截至2026年3月30日，标普500指数的总市值达到57.62万亿美元。而市值最大的10家公司占据超过36%的市值，较2025年的41%略有下降，仍远高于2000年的23%。
分行业来看，信息行业的权重最高，达到31.3%。其中，英伟达的权重为7.0%，甚至超过了能源或公用事业等整个行业的权重。苹果、微软紧随其后，权重分别为6.3%和4.6%。
此外，金融、通信服务和非必需消费品的权重均超过10%。伯克希尔·哈撒韦公司是市值排名前十的公司中唯一的金融公司，其排名自2023年以来从第六位下滑至第十位。
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