# What Is a Wirehouse? Role, Impact, and Evolution in Modern Finance

## What Is a Wirehouse?

A wirehouse is a broker-dealer offering a full range of financial services. While the term historically refers to a time when broker-dealer offices were only connected by telephone or telegraph wires, today they operate using the Internet and cloud technology, but the name remains.

Modern wirehouses offer a broad range of financial services and range from small regional brokerages to large global institutions. The 2008 Financial Crisis greatly impacted wirehouses due to their exposure to mortgage-backed securities (MBS), leading to the closure of smaller firms and the acquisition of major ones like Merrill Lynch and Bear Stearns by banks.

### Key Takeaways

*   Wirehouses evolved from telegraph networks to internet-based operations, offering full-service brokerage services globally.
*   The 2008 financial crisis led to the consolidation and acquisition of major wirehouses due to their exposure to mortgage-backed securities.
*   Despite increased competition from discount brokerages, wirehouses remain profitable by offering services like investment banking and wealth management.
*   Major wirehouses today include prominent firms like Bank of America Merrill Lynch, Goldman Sachs, and Morgan Stanley.
*   High-frequency trading firms use advanced technologies and direct exchange connections to gain competitive market advantages.

## How Wirehouses Have Evolved Over Time

The term "wirehouse" was coined when brokerage firms were connected to their branches primarily through private telephone and telegraph wires. This network connection enabled branches to have easy access to the same market information as the head office, thereby allowing brokers to provide up-to-date stock quotes and market news to clients.

The term also referred to banks and insurance companies connected to their head office by wired networks. Today, the internet allows institutions to communicate wirelessly, but many large brokerages are still called wirehouses due to the historical impact of wire communications.

## How the 2008 Financial Crisis Reshaped Wirehouses

The 2008 financial crisis caused major turmoil for wirehouses due to their exposure to [mortgage-backed securities](https://www.investopedia.com/terms/m/mbs.asp) (MBS). The failure to regulate mortgage-backed securities and mortgage brokers were some of the contributing factors to this crisis. A number of smaller brokerages were forced to close, and some of the most prominent players (e.g., Merrill Lynch and Bear Stearns) were either acquired by banks or became insolvent (e.g., Lehman Brothers). After the 2008 crisis, large broker-dealers dominated the sparse landscape.

## Wirehouses in Today's Financial Marketplace

Today’s wirehouses offer services like [investment banking](https://www.investopedia.com/terms/i/investment-banking.asp), research, trading, and wealth management. Discount brokerages and online quotes reduce the market edge of wirehouses, but their varied services in [capital markets](https://www.investopedia.com/terms/c/capitalmarkets.asp) keep them profitable. Examples of notable wirehouses include Bank of America Merrill Lynch, Wells Fargo, and Morgan Stanley. 

## Do Wire Houses Still Use Dedicated Telephone and Telegraph Lines?

No. The internet and cloud computing have done away with any vestige of the past technology used by wirehouses. The use of wirehouse to refer to a full service broker-dealer is virtually non-existent, and is mostly supplanted by terminology such as broker-dealer, brokerage, or investment bank.

## What Are the Leading Wirehouses Today?

The leading banks throughout the world are typically registered as broker-dealers to enable them to conduct all manner of securities transactions in various jurisdictions. In the US, some of the largest wirehouses are Bank of America/Merrill Lynch, Goldman Sachs, Wells Fargo, and JP Morgan Chase, just to name a few.

  

## Is It True That Some Hedge Funds Have Direct Links (e.g. Fiber Optic Cable) to Major Financial Exchanges?

Yes. Top hedge funds have direct fiber optic links to major financial exchanges. Most [High Frequency Trading](https://www.investopedia.com/ask/answers/09/high-frequency-trading.asp) (HFT) firms use these links for a split-second edge and to meet algorithm demands.

## The Bottom Line

Wirehouse is a historical term for full-service broker-dealers that once relied on dedicated telegraph lines for communication. Modern wirehouses now use the Internet and cloud computing technologies but continue to play a central role in the financial industry, offering services such as investment banking, trading, research, and wealth management.

High-frequency trading firms are an example of wirehouses leveraging advanced technologies like fiber-optic connections to major exchanges.

The 2008 Financial Crisis led to a consolidation of many smaller wirehouses and the acquisition of major players like Merrill Lynch and Bear Stearns by large banks. Today, leading wirehouses such as Bank of America Merrill Lynch and Goldman Sachs remain resilient and influential in capital markets, adapting to technological advancements and maintaining their relevance despite growing competition from discount brokerages and online trading platforms.