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Founded in 1971, Nasdaq is primarily known for its equity exchange, but in addition to its trading business (about 22.5% of sales), the company sells market and financial data to investors, offers Nasdaq-branded indexes, and lists companies through its capital access segment (42.5%). Nasdaq's newest segment, financial technology, was primarily constructed through the acquisitions of Verafin and Adenza and has expanded the company into capital management, financial crime, and regulatory compliance software (35%) as it seeks to become a diversified technology company.

Ameriprise Financial has evolved into a diversified financial services provider that generates roughly 65% of its operating income from advice and wealth management. With nearly $1.2 trillion in segment assets under management and advisory at year-end 2025, and with roughly 10,600 affiliated and employee advisors, Ameriprise is one of the larger US-based wealth managers. It also boasts a reasonably large asset management franchise in Columbia Threadneedle, which boasted $678 billion in assets under management at year-end 2025. The firm's third key segment is its retirement and protection services business, which sells insurance products to the firm’s advisory clients. After eliminations, Ameriprise had $1.69 trillion in assets under management and advisory across segments at year-end 2025.

Blackstone is the world's largest alternative-asset manager with $1.242 trillion in total asset under management, including $906.2 billion in fee-earning assets under management, at the end of September 2025. The company operates with scale in each of its major product lines: private equity (26% of fee-earning AUM and 33% of base management fees), real estate/real assets (31% and 35%), private credit (34% and 25%), and other alternatives (9% and 7%). While the firm primarily serves institutional investors (84% of AUM), it also caters to clients in the high-net-worth channel (16%). Blackstone operates through 25 offices in the Americas (8), Europe and the Middle East (9), and the Asia-Pacific region (8).

Marsh McLennan is a professional services firm that provides advice and solutions in the areas of risk, strategy, and human capital. The company operates through two main segments: risk and insurance services and consulting. In risk and insurance services, the firm offers services via Marsh (an insurance broker) and Guy Carpenter (a risk and reinsurance specialist). The consulting division comprises Mercer (a provider of human resource services) and Oliver Wyman (a management and economic consultancy). About half of its revenue is generated outside the US.