Financial Intermediaries
Financial intermediaries stand between savers and the firms that need capital, repackaging funds so both sides are better served. Banks take deposits and make loans. Investment companies pool many investors’ money into managed portfolios. Brokers and dealers connect buyers and sellers, a broker acting as agent and a dealer trading from its own inventory. Investment banks help firms issue new securities. Their core economic functions are maturity transformation, turning short-term deposits into long-term loans, risk pooling and diversification, spreading risk across many assets, and reducing the information and transaction costs that would otherwise keep savers and borrowers apart.
Why it matters
Imagine trying to lend your savings directly to a stranger’s business. You would have to find them, judge their creditworthiness, write a contract, and hope you never need the money back early. Intermediaries solve all of that at scale. A bank gathers small deposits and makes large loans, handling the credit analysis for you. A fund pools your money with thousands of others so you own a slice of hundreds of securities you could never buy alone. A broker finds the counterparty so you do not have to. In each case the intermediary lowers the friction, the search, the paperwork, and the risk, that would otherwise stop savings from reaching their best use.
Worked examples
You have A$5,000 to invest but want exposure to 200 different companies. How does an intermediary make this possible?
An investment company such as a managed fund pools your A$5,000 with money from many other investors. The combined pool buys all 200 stocks, and you own a proportional share of the whole portfolio. Alone, A$5,000 could not be spread across 200 holdings at sensible cost. The intermediary delivers diversification and economies of scale you could not reach on your own.
A bank accepts a customer’s at-call savings deposit and uses the funds to write a 25-year mortgage. Which intermediary function is this?
This is maturity transformation. The bank converts a short-term liability, a deposit the customer can withdraw at any time, into a long-term asset, a 25-year loan. The bank manages the resulting liquidity and interest-rate risk so that savers keep easy access while borrowers obtain long-dated finance.
Common mistakes
- ✗Intermediaries are just middlemen adding unnecessary cost. They perform real economic functions, pooling risk, transforming maturity, and cutting information and transaction costs, that savers and borrowers could not replicate cheaply on their own.
- ✗A broker and a dealer are the same thing. A broker acts as an agent matching a client with a counterparty for a commission, while a dealer trades from its own inventory and earns the bid-ask spread.
- ✗Banks simply store your money in a vault. Banks lend deposits out as loans, performing maturity transformation, so the cash is working in the economy rather than sitting idle.
- ✗Investment banks manage portfolios for retail savers. Investment banks mainly help firms raise capital by issuing securities and advising on deals, which is different from the asset management that investment companies provide.
Revision bullets
- •Intermediaries stand between savers and capital users
- •Banks take deposits and make loans; funds pool money
- •Brokers act as agents; dealers trade from their own inventory
- •Investment banks help firms issue new securities
- •Core functions: maturity transformation, risk pooling, lower costs
Quick check
A bank funding a 25-year mortgage with short-term deposits is performing which function?
What is the key difference between a broker and a dealer?
Connected topics
Sources
- Brailsford, Heaney & Bilson (2015), Ch. 1-2Brailsford, T., Heaney, R., & Bilson, C. Investments: Concepts and Applications. 5th ed. Cengage Learning Australia, 2015.Surveys financial intermediaries and their functions, including banks, investment companies, brokers, and dealers.
- Bodie, Kane & Marcus (2021), Ch. 1-2Bodie, Z., Kane, A., & Marcus, A. J. Investments. 12th ed. McGraw-Hill Education, 2021.Explains intermediation, maturity transformation, and the role of investment banks in issuing securities.