State Street (STT)

State Street’s investment servicing arm provides functions that are essential to the daily operation of investment portfolios. These include custody, fund accounting, fund administration, transfer agency, performance measurement, collateral management, foreign exchange, and middle-office outsourcing. As a custody bank, State Street safeguards assets and processes transactions rather than operating like a traditional consumer lender, making fee income, client asset levels, market activity, and interest-rate conditions important drivers of its performance.

The company also operates State Street Global Advisors, one of the world’s largest asset management businesses and the sponsor of the SPDR exchange-traded fund family. This gives State Street a significant presence in index investing, ETFs, institutional mandates, and portfolio solutions.

As of Dec. 31, 2025, State Street reported approximately $54 trillion in assets under custody and administration and $5.7 trillion in assets under management. It operates across more than 100 geographic markets and employs about 51,500 people worldwide.

State Street’s scale, global operating network, and deep integration into institutional market infrastructure are its defining characteristics. The company plays a key role behind the scenes of modern finance by helping clients process trades, value portfolios, meet regulatory requirements, manage liquidity, and access investment exposures across asset classes and regions.