SEI is a financial services company based in the United States, operating since 1968 and employing between 1,001 and 5,000 staff members. The company primarily focuses on various sectors within the finance industry, including banking and corporate services, as well as utility and energy markets. SEI's published documents indicate a specialization in asset management strategies, particularly in the context of Separately Managed Account (SMA) to Exchange-Traded Fund (ETF) conversions. These conversions are highlighted as a growing practice among asset managers, offering operational and tax management solutions. The process involves aggregating eligible SMAs into a pooled structure, which is then evaluated for compliance with regulatory requirements before transferring assets into the new ETF. Additionally, SEI has produced research on structured credit, indicating a commitment to providing insights and guidance on complex financial instruments. The company's documentation reflects its expertise in enhancing investment strategies and operational efficiencies within the finance sector.