Ranking Of Largest Brokerage Firms By Assets In 2024 (2024)

Brokers can have a staggering range of Assets Under Administration and sometimes – mammoth scales.

But pay attention to the nuances. A lot of websites compare brokers using the AUM metric, which is misleading. Some brokers are also asset managers, and play different roles.

For Brokers, we talk about Assets Under Administration (AUA), which refers to the aggregate value of assets over which a financial institution exercises administrative oversight, providing specialized services for a fee. These assets remain under the direct ownership and strategic management of the clients.

Unlike Assets Under Management (AUM), AUA involves a non-discretionary role focused on administrative functions. These functions encompass a wide array of services, including fund accounting, tax compliance, trade processing, and custodial duties, executed by leading global banks and financial institutions.AUM pertains to assets that are actively managed by investment professionals who bear fiduciary responsibilities, enabling them to execute investment decisions on behalf of their clients. In contrast, AUA focuses on the administrative stewardship of assets.

That’s why it’s more relevant to talk about AUA, Client Assets, Assets under custody, Customer Equity rather than Assets Under Management.

What are the big brokers in europe & the UK?

We rank brokers that are used by European and UK Investors, but are not affiliated with a Large Banking Group, as represented on the below graph (Tier 1 & Tier 2 Brokers). We also excluded Tier 3 brokers that are irrelevant, since they are speculative platforms with low sticky Assets.

Read here how we categorise Brokers.

Key highlights:

• The majority of assets – are managed by a few big brokers listed are Tier 1 institutions, indicating a strong presence of top-tier brokers in the market, particularly in the UK
• Average account size – Average account sizes vary from £/€100-150k for the largest Tier 1 Brokers (AJ Bell or Interactive Investor) to €20k (DEGIRO) or below for Tier 2 brokers.
• Variety in AUA: Assets under administration vary widely among these brokers, from as high as 430 billion USD to as low as 0.15 billion GBP, reflecting a broad range of broker sizes and client bases.

Why AUM is misleading?

Comparing asset managers to brokers by using Assets Under Management (AUM) as a common metric is like comparing apples to oranges, due to the fundamental differences between AUM and Assets Under Administration (AUA). Here’s why most websites use a misleading metric:

• Different Roles and Functions: Asset managers, such as Vanguard or Fidelity, actively manage their clients’ investments, making strategic decisions to achieve growth or income. Brokers – like Interactive Brokers or SAXO Bank – primarily provide a platform for buying and selling securities, along with other related services, without making discretionary investment decisions.
• AUM vs. AUA: AUM refers to the total market value of the assets that an asset manager has the discretion to invest on behalf of their clients. It reflects the manager’s direct control and responsibility over the assets. AUA, commonly associated with brokers, encompasses assets that are under the broker’s administrative care but not directly managed or controlled in terms of investment decisions. This can include custodial services, record-keeping, and execution of trades as instructed by the client or their asset manager.

In our table, we included Vanguard’s assets on the UK Investor platform. However, on a global level, Vanguard AUM ($8 trillion) is much larger than the assets on its direct platform.

Thus, while Vanguard and Fidelity are indeed leading asset managers with significant AUM, using AUM to rank them alongside brokers can overlook the distinct nature of services each provides and the different value they bring to their clients.