Table of Contents
What Is a Wirehouse Broker?
Let me explain what a wirehouse broker is. As someone who's looked into this, I can tell you that a wirehouse broker advises clients and trades stocks and other assets on their behalf, working as an employee of a full-service brokerage house. The term 'wirehouse' means they're with one of the big players, not operating independently or with a smaller broker-dealer.
Right now, the four largest and most recognized full-service wirehouse firms are Morgan Stanley, Bank of America's Merrill Lynch, UBS, and Wells Fargo. 'Wirehouse' is actually an old-fashioned term for a broker-dealer.
Key Takeaways
Here's what you need to know directly: Wirehouse is an outdated name for a full-service brokerage, especially the biggest ones. It came from the telegraph and telephone lines that let these firms share stock info quickly with branches and execute trades fast. Today, all brokers—whether at a wirehouse or independent—use the internet for the same info and market access.
Advisor Numbers
- Merrill Lynch has 13,000 financial advisors on payroll.
- Morgan Stanley has nearly 17,000.
Wirehouse Broker Explained
Before modern wireless tech, brokerage firms connected to branches via telephone and telegraph wires. This setup gave branches the same market info as headquarters, so brokers could deliver stock quotes and news to clients. A wirehouse broker, both then and now, is a full-service broker providing research, investment advice, and order execution. By joining a wirehouse, they get the firm's proprietary products, research, and tech.
It used to be that only wirehouse brokers could offer top service, while independents were seen as just pushing prepackaged products and lesser in the industry. But that's changed—independents now access high-quality research too.
Wirehouses and the Financial Crisis
The global financial crisis caused massive issues for wirehouses, mainly due to their heavy involvement with mortgage-backed securities that tanked. Smaller firms shut down, big names like Merrill Lynch and Bear Stearns got bought by banks, and others like Lehman Brothers went bankrupt. This shook things up, pushing many wirehouse brokers to seek independent options after their firms failed.
Wirehouses and Independents Today
Most wirehouses today are full-service outfits offering everything from investment banking and research to trading and wealth management. Discount brokerages and online tools have cut into their old info advantage, but their broad capital market activities keep them profitable. Still, some brokers leave for independence. Firms like Raymond James and Ameriprise have shifted to wealth management, with 6,545 associates handling $295.3 billion in assets by 2023.
What Is the Difference Between a Wirehouse and a Brokerage?
Understand this: All wirehouses are brokerages, but not vice versa. Wirehouses are the largest full-service ones where employees provide research, in-house analysis, and trading. Some brokers work independently or with non-wirehouse firms.
How Many Wirehouses Are There?
Strictly, there are four: Morgan Stanley, Merrill Lynch, UBS, and Wells Fargo. As of 2022, the U.S. had about 3,378 broker-dealer firms, many independent.
Do Wirehouses Still Use Telephone and Telegraph Wires?
No, they don't. They use the internet like everyone else. Gone are the old machines printing ticker tape for stock prices—that was telegraph tech too.
The Bottom Line
Only four firms qualify as wirehouses today: Morgan Stanley, Merrill Lynch, UBS, and Wells Fargo. They face competition from thousands of independent broker-dealers, wealth advisors, or plain brokerages.
Other articles for you

The Maastricht Treaty established the European Union and laid the foundation for the euro currency.

The New Deal was Franklin Roosevelt's series of programs to combat the Great Depression by boosting the economy and providing social support.

The Credit Default Swap Index (CDX) is a benchmark tool tracking credit default swaps for North American and emerging market companies to gauge credit risk and enable hedging or speculation.

The text explains the CRPC designation, its benefits, program details, and comparisons to other financial certifications.

Net debt per capita measures a government's debt per citizen to assess fiscal health and is often used politically.

Depreciation is an accounting method that spreads the cost of tangible assets over their useful life to match expenses with revenue.

The Hodrick-Prescott filter is a macroeconomic tool that smooths data by removing short-term business cycle fluctuations to reveal long-term trends.

A back stop is a financial mechanism where an underwriter or major shareholder agrees to buy any unsubscribed shares in a securities offering to ensure the issuer raises the required capital.

Online shoplifting is the theft of goods from online merchants through methods like fraudulent chargebacks or illegal downloading of copyrighted content.

A qualifying event is a life change that lets you adjust or enroll in health insurance outside of standard open enrollment periods.