How to Pass the CISI Global Securities Operations Exam (IOC)

Global Securities Operations, usually shortened to GSO, is the technical unit of CISI's Investment Operations Certificate (IOC). It is the paper for the people who keep the machinery of the market running: settlements, custody, corporate actions, reconciliations, client assets, and the middle-office roles that sit between the front office and the plumbing. If your day involves matching instructions, chasing a failed trade or processing a rights issue, this is your exam. Passing it alongside the Introduction to Securities & Investment and UK Financial Regulation completes the full IOC qualification.

The exam is 50 multiple-choice questions in 60 minutes, with a 70% pass mark, which means 35 correct answers. It is computer based, with no negative marking, so answer every question. CISI recommends roughly 80 hours of study, and for once the estimate is honest: nothing in the syllabus is conceptually difficult, but it is wide, and the detail it expects is specific.

Candidates mostly come from operations and custody teams at banks, asset managers, fund administrators and outsourced service providers, often put through the IOC by their employer. Unlike the introductory paper, which rewards general awareness, GSO rewards the precise operational knowledge you use at your desk: which date determines entitlement, which party carries the risk between trade and settlement, which reconciliation would have caught the break.

Know the weightings before you revise

The 50 questions span five elements, and the split is lopsided in a way you should exploit.

The first three elements are 40 of the 50 marks, and Other Investor Services alone, the custody services and corporate actions element, is nearly a third of the paper. Taxation is four questions. Revise in order of weight, not in the order the workbook presents the chapters.

CISI notes the exact numbers can shift by a question or two between sittings, but the shape does not change: this is a paper about custody services, settlement and corporate actions, with tax and risk around the edges.

What each element tests

Main Industry Participants (13 questions). Who does what in the custody chain. The types of investor and intermediary, global custodians and subcustodians and the agreements that bind them (custody agreements, SLAs, the RFP process), and the depositories: what ICSDs and CSDs do, the roles of Euroclear Bank and Clearstream Banking and the Bridge between them, certificated versus immobilised versus dematerialised securities, TARGET2-Securities, and the impact of CSDR. It closes with communications: straight-through processing, SWIFT and FIX messaging.

Settlement Characteristics (11 questions). The trade lifecycle from matching to settlement. The data that has to match, clearing trade for trade versus through a central counterparty, netting, settlement periods in the selected markets, depositary receipts, the main payment systems (CHAPS, CHIPS, TARGET2, Fedwire and CLS), delivery versus payment against free of payment, and what happens when settlement fails: buy-ins, interest claims and the CSDR settlement discipline regime. Expect a calculation on interest claims under the ICMA rules.

Other Investor Services (16 questions). The heaviest element and the heart of the custody job. Safekeeping and segregation of client assets, nominee companies and the difference between legal title and beneficial ownership, the cost-of-custody calculation, corporate actions in full, from dividends and rights issues to takeovers and conversions, together with the date sequence that goes with them, cash management (sweeping and pooling), and securities financing: lending, borrowing, collateral, repo and SFTR.

Aspects of Taxation (4 questions). Small but precise. Tax on income from equities and bonds, capital gains, discount securities, and the machinery of cross-border tax: withholding tax, double taxation treaties, relief at source versus reclamation, qualifying intermediaries, FATCA and CRS.

Risk (6 questions). The categories of risk and how to tell them apart, risk reviews of subcustodian networks and market infrastructure, custody risk and its countermeasures, ISAE 3402 and SSAE 18 assurance reports, and the reconciliations that catch problems before they become losses.

Where people slip

The first trap is the market-by-market detail. The syllabus defines twelve selected markets, from the UK and US through Japan, Australia, India, Hong Kong, Singapore, Korea and Brazil, and expects you to know things like settlement periods and depositories for each. This is memory work, plain and simple, and it does not stick from a single read. Build yourself a table and drill it until the odd ones out, the markets that differ from the pack, are automatic.

The second is the corporate action date sequence. Record date, ex-date, pay date, cum-benefit and ex-benefit, special-ex and special-cum: questions love to describe a trade either side of a date and ask who is entitled to the dividend. If you cannot reconstruct the sequence under pressure, you will donate several of the sixteen Element 3 marks.

The third is dismissing the small elements. Taxation is only four questions, but they are precise ones, and the difference between relief at source and reclamation, or between FATCA and CRS, is exactly the kind of thing you believe you know until it is in front of you with four plausible options.

Finally, the calculations. There are not many, but interest claims, the cost of custody in basis points and the effect of a corporate action on a holding all calculate, and each is easy marks if you have practised the method and a coin toss if you have not.

Time, at least, is not the enemy. Fifty questions in sixty minutes is a comfortable pace if you know the material, so there is no need to rush. The paper punishes gaps in breadth, not slowness, and a wrong answer given quickly scores exactly the same as a wrong answer given carefully.

How to revise it

Give Elements 1 to 3 the bulk of your hours, in rough proportion to the weightings. Get the custody chain straight first, because everything else hangs off it: who holds what, where, and on whose behalf. Then drill the settlement lifecycle and the corporate action date sequence until you can narrate both without notes. Treat the selected-markets detail as deliberate memory work rather than hoping it absorbs, and do it little and often rather than in one sitting. Cover taxation and risk properly but briefly, close to the exam, so the detail is fresh on the day.

Above all, revise by being tested rather than by rereading. In an operations paper the gap between recognising a term and knowing it cold is where the marks go, and only questions expose it. Finish with timed 50-question mocks weighted like the real paper, and book when you are clearing 70 per cent comfortably on more than one.

If you already work in operations, use your desk. The syllabus maps closely onto a real settlements and custody workflow, so every time you touch a corporate action or investigate a fail, tie it back to the relevant chapter. Knowledge with a real trade attached to it survives exam pressure far better than knowledge from the page.

Hunting for past papers? Read Global Securities Operations past papers: what actually exists.