Best CISI GSO Mock Exams & Study Materials in 2026: How to Choose

Even with a favourable 60% pass rate, passing the CISI Global Securities Operations (GSO) exam on your first attempt takes more than reading the workbook. The right study materials — especially realistic mock exams — make the difference between a comfortable pass and a resit.

But not all resources are equally effective. Here is an honest comparison of your options so you can choose what works.

The Study Materials Available to You

1. The Official CISI Workbook

The CISI workbook is your primary source of truth and is included in your exam fee — when you book, CISI provides the most up-to-date workbook for the subject, so every candidate studies from the same definitive material.

Pros: Comprehensive, authoritative, covers the entire syllabus.

Cons: Dense and terminology-heavy. Reading it end to end does not teach you how to answer precise, exam-style questions under time pressure — which is exactly what the exam tests.

2. Free PDFs and Question Dumps

You will find free GSO PDFs and question sets floating around online.

Pros: Free, easy to find.

Cons: Often outdated, poorly explained, or simply wrong. Securities operations rules change (settlement cycles, CSDR, regulatory reporting), so an old or incorrect resource can teach you the wrong thing. Use our free GSO practice questions for a reliable, well-explained starting point.

3. Classroom and Instructor-Led Courses

Some providers offer GSO or wider IOC courses.

Pros: Structured, with access to an instructor.

Cons: Expensive, time-consuming, and scheduled at fixed times. The teaching is often passive, and you can still walk away short on the question practice that actually builds exam readiness.

4. Online Question Banks and Mock Exams

A dedicated online question bank lets you practise realistic questions across all 5 chapters, sit full mock exams, and get instant feedback.

Pros: Active recall, exam-style practice, instant feedback, progress tracking, and step-by-step working for the calculations. This is the most effective way to prepare for a terminology-heavy exam.

Cons: Quality varies between providers, so choose one built specifically for the CISI GSO syllabus.

ExamPrep.ae's instant feedback and explanations help you understand each concept and improve your score.

ExamPrep.ae's Practice by Chapter mode lets you drill each of the 5 GSO chapters individually.

ExamPrep.ae's analytics show your performance in every GSO chapter, so you always know what to study next.

What to Look for in a CISI GSO Question Bank

Not all question banks are created equal. Look for:

• Syllabus alignment — questions mapped to the current 5-chapter GSO syllabus and its question weighting
• Detailed explanations — every question explained so you understand why an answer is right
• Worked calculations — step-by-step working for custody fees, corporate actions and interest claims
• Full mock exams — timed, 50-question simulations of the real thing
• Performance analytics — so you can find and fix your weakest chapters
• Realistic difficulty — questions that match the precise terminology of the real exam

Every GSO calculation on ExamPrep.ae comes with full step-by-step working.

The Most Effective Study Strategy

The evidence is clear: active practice beats passive reading. The candidates who pass GSO comfortably are the ones who:

1. Read the workbook once to build a foundation
2. Practise questions by chapter to reinforce each topic
3. Focus on the three big chapters — Main Industry Participants, Settlement Characteristics and Other Investor Services (40 of the 50 marks)
4. Sit full mock exams to build timing and confidence
5. Review analytics to target their weakest chapters

For the complete approach, see our guide to passing the CISI GSO exam and learn whether the exam is difficult so you know what to prepare for.

ExamPrep.ae's AI Weakness Engine builds personalised quizzes that target your weakest GSO chapters.

Why ExamPrep.ae for CISI GSO

ExamPrep.ae is built specifically for CISI candidates in the UAE and beyond. For GSO you get:

• Exam-realistic questions across all 5 chapters, weighted like the real exam
• Clear explanations and step-by-step working for the calculations
• Full-length mock exams that mirror the 50-question, 1-hour format
• Performance analytics that pinpoint your weak chapters
• An AI Weakness Engine that turns those weak spots into personalised practice

Your Next Steps

1. Plan your study — Read our complete guide to passing the CISI GSO exam
2. Know the format — Review the GSO passing score and exam format
3. Register — Follow our step-by-step GSO registration guide
4. Practise now — Try our free CISI GSO mock questions and start practising with ExamPrep.ae

Choose materials that make you practise, not just read — and you will give yourself the best possible chance of passing on your first attempt.