Market Supervision forms part of the Market Regulation department which is responsible for regulating all the markets operated by LSE plc (the Recognised Investment Exchange).

Market

Supervision is responsible for monitoring secondary market trading on London Stock Exchange(“LSE”), Turquoise Global Holdings Limited(“TGHL”) and Turquoise Global Holdings Europe B.The purpose of Market Supervision is to ensure that trading is orderly and efficient, and in compliance with the Exchange’s rules(“the rules”) and to identify activity which may indicate market abuse as outlined in the UK Financial Conduct Authority’s Code of Market Conduct and MAR. The role reports into the Head of Market Supervision. This role will be responsible for co-leading and managing Market Supervision coverage for LSE’s 24x5 extended trading model, ensuring that trading remains orderly, efficient and compliant with the relevant trading venue rules during non-UK working hours.

Primary responsibilities include supervision of live market activity, management of trading halts, cancellations and disorderly trading events, interaction with member firms and internal stakeholders, investigation of unusual trading patterns, and development of procedures, playbooks and controls for LSE 24. Lead and manage real-time and post-trade supervision of LSE 24 activity ensuring effective oversight of trading behaviour, market quality, system events and participant activity. Act as a senior Market Supervision presence during non-UK working hours, providing experienced judgement and management of trading halts, trade cancellations, potential disorderly trading conditions and other market events.

Drive the development, testing and continuous improvement of procedures, playbooks and escalation paths for overnight and cross-time-zone supervision. Provide senior input into surveillance coverage, controls calibration,



market event handling and operational readiness for LSE 24 Support readiness activity ahead of launch, including scenario testing, dress rehearsals, incident simulations, communication templates, regulatory evidence packs and lessons-learned processes. Identify, investigate and elevate unusual trading patterns or potential market abuse indicators, including preparation of appropriate internal analysis and potential regulatory referral materials.

Contribute to future expansion planning for LSE 24, including any broadening beyond the initial ETP scope, further operating model refinement, and potential interaction with future digital market infrastructure.

Experience in market supervision, trading venue operations, compliance, risk, front-office trading, surveillance, exchange operations or a similar regulated financial markets environment Strong understanding of secondary market trading, market structure, trading rules, order and trade lifecycle, and venue control frameworks Experience managing or escalating live market events, such as trading halts, disorderly trading conditions, trade cancellations, technical incidents or participant issues Strong stakeholder management skills, including the ability to interact confidently with member firms, technology, operations, compliance, legal, risk and senior management. Clear written and verbal communication skills, with the ability to produce concise incident summaries, escalation notes, decision records and regulatory-ready explanations. Familiarity with surveillance tools, trading platforms, incident management tools and large trading datasets Understanding of US and APAC market dynamics,



including retail-driven flow, overnight liquidity conditions and out-of-hours market event risk Career Stage Join us and be part of a team that values innovation, quality, and continuous improvement.

LSEG is a leading global financial markets infrastructure and data provider. Our purpose is driving financial stability, empowering economies and enabling customers to create sustainable growth. Our purpose is the foundation on which our culture is built.

However, we will value your individuality and enable you to bring your true self to work so you can help enrich our diverse workforce. This means that we do not discriminate on the basis of anyone’s race, religion, colour, national origin, gender, sexual orientation, gender identity, gender expression, age, marital status, veteran status, pregnancy or disability, or any other basis protected under applicable law. Conforming with applicable law, we can reasonably accommodate applicants’ and employees’ religious practices and beliefs, as well as mental health or physical disability needs.

You’ll be part of a team-oriented and creative culture where we encourage new ideas. We are committed to sustainability across our global business and we are proud to partner with our customers to help them meet their sustainability objectives. Our charity, the LSEG Foundation provides charitable grants to community groups that help people access economic opportunities and build a secure future with financial independence.

LSEG offers a range of tailored benefits and support, including healthcare, retirement planning, paid volunteering days and wellbeing initiatives. Please take a moment to read this privacy notice carefully, as it describes what personal information London Stock Exchange Group (LSEG) (we) may hold about you, what it’s used for, and how it’s obtained, your rights and how to contact us as a data subject.

📌 Senior Manager, Market Supervision, (Toronto)
🏢 LSEG
📍 Toronto