Key Participants (Part 1): Investment Banks and Custodians — CISI IISI
CISI IISI frequently tests whether you understand who does what in financial services. Two roles that are easy to confuse—but crucial in practice—are investment banks and custodians. They both serve institutional markets, but their functions differ: one focuses on capital raising, advisory, and markets activity; the other focuses on safekeeping and post-trade services.
In real financial markets, these roles often interact. For example, an investment bank might help issue securities, while a custodian later holds and services those securities on behalf of an asset manager.
This lesson makes the differences clear so you can answer scenario questions quickly.
Where this topic sits inside CISI IISI
This lesson sits within the “Participants” section. Knowing participants is a foundation for later topics such as issuance, trading, settlement, custody, and investment distribution. It also supports wholesale vs retail classification.
The concept explained in plain English
Investment banks provide advice and arrange finance for organisations. Their work often includes:
- Helping companies or governments raise funds by issuing shares or bonds
- Advising on mergers and acquisitions (M&A)
- Trading and distributing securities (equities, bonds, derivatives) to clients
- Treasury/FX and risk management solutions for corporate clients
- Sometimes investment management for large investors
Custodians are specialist banks that hold and service investments (eg, shares and bonds) for institutions such as fund managers, pension funds, and insurers. Typical custody services include:
- Safekeeping of assets
- Settlement of purchases and sales
- Asset servicing (collecting dividends/interest, processing corporate actions)
- Reporting and record-keeping
- Cash management and FX support where needed
How it works step-by-step
- Client objective is set: raise capital, acquire a company, trade securities, or hold assets safely.
- Investment bank engagement: advisory and structuring (eg, issuance or M&A) and potentially execution/distribution.
- Investors buy securities: institutions allocate capital into the issued shares/bonds or trade in markets.
- Custodian is appointed: investor (or its asset manager) uses a custodian to hold assets and manage post-trade processes.
- Ongoing servicing: custodian processes income, corporate actions, and reporting while the asset manager focuses on investment decisions.
Practical examples
- IPO support: an investment bank advises a company on listing and coordinates the share offering process.
- Bond issuance: an investment bank structures a corporate bond issue and distributes it to institutional investors.
- Custody in action: a pension fund’s global equity portfolio is held with a custodian, which collects dividends and handles corporate actions like rights issues.
- Settlement support: after a trade, the custodian ensures the correct delivery of securities and payment.
Exam focus: how this is tested
- Identify which institution performs which function in a scenario (advisory/raising finance vs safekeeping/servicing).
- Know typical investment bank service categories: finance raising, advisory (M&A), trading/broking, treasury/FX solutions.
- Know core custody functions: safekeeping, settlement, income collection, corporate actions, reporting.
- Be ready for “which participant would you use?” questions.
Common pitfalls and how to avoid them
- Pitfall: assuming the broker and custodian are the same.
Avoid: brokers execute trades; custodians hold assets and handle post-trade servicing. - Pitfall: thinking investment banks only do M&A.
Avoid: include capital raising, markets/trading, and treasury solutions. - Pitfall: forgetting custody includes corporate actions.
Avoid: remember “income + corporate actions + reporting” as a key custody trio.
Self-test (original questions)
- Q: What is a core function of an investment bank?
A: Advising and arranging finance (eg, issuing shares/bonds, M&A).
Explanation: Investment banks help organisations raise capital and execute strategic transactions. - Q: What is a custodian’s primary role?
A: Safekeeping and servicing assets for institutional clients.
Explanation: Custodians focus on post-trade and asset administration. - Q: Who would typically process dividends and bond coupons for a fund’s holdings?
A: The custodian.
Explanation: This is part of asset servicing. - Q: A company wants to acquire a competitor. Which participant is most relevant?
A: An investment bank.
Explanation: M&A advisory is a classic investment banking service. - Q: True/False: Custodians mainly provide retail current accounts.
A: False.
Explanation: Custody is an institutional service line. - Q: What is “settlement” in a custody context?
A: The process of delivering securities and paying cash after a trade.
Explanation: It finalises the transaction. - Q: Name two extra services global custodians might provide beyond safekeeping.
A: Stock lending and performance measurement (examples).
Explanation: Custodians often expand services to add value. - Q: Which participant is more likely to provide treasury dealing and FX solutions to corporates?
A: An investment bank (or banking group’s markets division).
Explanation: This sits in markets/treasury services. - Q: Why has custody industry consolidation occurred?
A: Cost pressures and reduced fees have favoured larger scale providers.
Explanation: Scale helps reduce unit costs.
Note for candidates in India
For CISI IISI India candidates, revise participants by converting roles into verbs: investment banks “advise, raise, trade,” while custodians “hold, settle, service.” A strong schedule tip is to do a 10-minute daily drill where you read a short scenario and decide which participant is being described. This improves speed on exam day. When you’re ready to book, verify the current delivery options (test centre or remote), ID requirements, and any rescheduling rules with CISI and/or the exam provider, since operational steps may change over time.
FAQs
- Do investment banks serve retail customers?
They mainly serve institutional and corporate clients, though some groups also have retail divisions. - Is a custodian the same as a registrar?
Not exactly. Custodians safeguard and service assets for investors; registrars handle issuer share registers (confirm in wider study if covered). - Why do asset managers use custodians?
To outsource safekeeping, settlement, income collection, and reporting while focusing on investment decisions. - What is asset servicing?
Operational support on holdings—collecting income, processing corporate actions, and maintaining records/reporting. - Can an investment bank also be a custodian?
Some large groups have multiple divisions, but custody is a distinct specialist function. - What is meant by “distribution” in investment banking?
Selling/placing new issues or trading inventory with investors through sales channels. - What is the simplest exam cue for custody?
Words like safekeeping, settlement, income collection, corporate actions, and reporting. - What is the simplest exam cue for investment banking?
Words like issuance, M&A, advisory, syndication, trading, and treasury solutions. - Do custodians reduce investment risk?
They reduce operational and safekeeping risk but do not remove market risk from the investments.
Next step
To master participants across the sector and sharpen your scenario recognition, study with our structured CISI IISI course and track your progress through topic tests.
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Quick Quiz
Which task is most associated with a custodian?
- A. Advising on mergers and acquisitions
- B. Safekeeping assets and processing corporate actions
- C. Setting monetary policy
- D. Issuing driving licences
A company planning an IPO would most likely hire:
- A. A custodian
- B. An investment bank
- C. A reinsurance broker
- D. A payment card network
“Settlement” refers to:
- A. Choosing a stock to buy
- B. Delivering securities and paying cash after a trade
- C. Paying a tax bill
- D. Closing an office lease
Answers
- 1: B
- 2: B
- 3: B