With a market capitalization (market cap) of $12.83B — a measure of how much the company is worth — SEI Investments Company is the 823rd most valuable company in Financial Services as of August 18, 2026. Shares trade at $106.92, up +1.37% on the day.
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SEI Investments Company is a publicly traded enterprise primarily focused on asset management. Leveraging its network of subsidiaries, SEI delivers a comprehensive suite of financial offerings. These encompass wealth, retirement, and investment solutions, alongside specialized asset management, asset administration, and outsourced investment processing services, in addition to general financial services and investment advisory expertise. Its extensive client roster serves a diverse array of financial entities, including private banks, independent financial advisors, investment managers, wealth management organizations, hedge fund managers, and broker-dealers. Additionally, it caters to corporations, institutional investors, various retirement schemes (both defined-benefit and defined-contribution), endowments, foundations, and non-profit organizations. Through its various entities, SEI actively manages customized client portfolios and also establishes and oversees a diverse range of mutual funds, covering equity, fixed income, and balanced strategies. Furthermore, the company directly engages in investments across public equity and fixed income markets. Its investment decisions are informed by a blend of fundamental and quantitative analytical techniques, integrating both top-down macroeconomic perspectives and bottom-up individual security analysis. Established in 1968, SEI maintains its headquarters in Oaks, Pennsylvania.
Visit websiteAs of August 18, 2026, SEI Investments Company (SEIC) is worth $12.83B — this is its market capitalization, the total value of all its outstanding shares.
SEI Investments Company’s market cap is $12.83B, which ranks it #823 among the most valuable companies in the Financial Services sector tracked on MarketCapLens.
SEI Investments Company (SEIC) shares trade at $106.92, up 1.37% on the day, as of August 18, 2026.
Fundamentals are annual. Figures labeled with their fiscal year.
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SEI Investments Company trades at a price-to-earnings (P/E) ratio of 18.6, based on its latest share price and annual earnings per share.