Quick Answer
The fourth market is direct trading between institutions using Electronic Communication Networks, with no broker-dealer intermediary at all. It differs from the third market, where a dealer still participates. Expect exam questions that test this distinction: no intermediary means fourth market; a dealer involved means third market.
The fourth market takes the concept of avoiding intermediaries one step further; institutions trade directly with each other, with no broker-dealer involved at all.
What Is the Fourth Market?
- The fourth market is direct institution-to-institution trading with no broker-dealer intermediary
- Conducted through Electronic Communication Networks (ECNs): automated systems that match buy and sell orders electronically
- Used almost exclusively by large institutional investors trading significant positions
Think of it this way: In the third market, a dealer still sits in the middle of the trade. In the fourth market, two institutions trade directly through an electronic network, avoiding a separate intermediary's commissions or markups.
Benefits of the Fourth Market
- Avoids intermediary compensation: no commissions or markups paid to a separate broker or dealer
- Greater anonymity: large institutional trades can execute without revealing the buyer or seller's identity to the market
- Faster execution: electronic matching is immediate, with no negotiation delay
Often confused:
- A broker's commission pays for agency execution. A dealer's markup or markdown compensates the dealer in a principal trade. Avoiding commissions alone does not rule out a dealer trade.
- ECNs may charge access fees. Avoiding a separate broker or dealer intermediary does not mean trading is free of all costs.
Exam Tip: Gotchas
- Anonymity is a major draw. A pension fund selling a large block of stock does not want the market to know and drive the price down before the trade completes.
How ECNs Work
- ECNs are electronic systems that automatically match buy and sell orders at specified prices
- They function like electronic bulletin boards where institutions post orders and the system finds matching counterparties
- ECNs can handle both exchange-listed and OTC securities
Exam Tip: Gotchas
- ECNs are not limited to exchange-listed securities. They can match orders for OTC securities too. The third market is the one specifically defined by listed securities trading off-exchange.
Third Market vs. Fourth Market
| Feature | Third Market | Fourth Market |
|---|---|---|
| Securities traded | Exchange-listed (traded OTC) | Any securities |
| Intermediary | Dealer involved | No intermediary |
| Participants | Institutions and dealers | Institution-to-institution only |
| Mechanism | Negotiated via OTC dealers | Electronic Communication Networks (ECNs) |
| Key benefit | Lower costs, less market impact | Avoids intermediary compensation, greater anonymity |
Exam Tip: Gotchas
- The defining feature of the fourth market is no broker-dealer intermediary. If a question describes two institutions trading directly through an ECN, that is the fourth market. If a dealer is involved, it is the third market.
- Fourth market = no intermediary. Third market = dealer involved. This is the single most tested distinction between the two.
- A question that asks for "a difference" can use any row of the table, not only the intermediary row. "The third market is limited to exchange-listed securities, while the fourth market can trade any securities" is a true difference. The fourth market can also trade listed stock, but the statement is about what each market is limited to.
What Should You Check on Exam Day?
- Can you explain what makes the fourth market different from the third market?
- Do you know why ECNs give institutions anonymity when trading large blocks?
- Can you state whether ECNs handle only exchange-listed securities or OTC securities too?
- Do you know the three benefits of fourth market trading: avoiding intermediary compensation, greater anonymity, and faster execution?