Purpose of the Role 

Market Supervision forms part of the Market Regulation department and is responsible for monitoring secondary market trading across London Stock Exchange ("LSE"), Turquoise Global Holdings Limited ("TGHL") and Turquoise Global Holdings Europe B.V. ("TGHE"). 

This role supports the real-time and post-trade supervision of trading activity across LSE's extended-hours trading model, LSE 24. The role contributes to the orderly operation of the market through the monitoring, investigation and escalation of unusual trading activity, market events, potential market abuse and breaches of Exchange Rules. 

The role requires strong analytical skills, attention to detail, an interest in financial markets and the ability to assess trading activity within established supervisory frameworks and procedures. 

Key Responsibilities and Accountabilities 

The role will include some or all of the following: 

• Perform real-time and post-trade monitoring of LSE 24 activity, identifying unusual trading behaviour, market events and participant activity requiring further review. 

• Investigate and escalate unusual trading patterns, potential market abuse indicators, disorderly trading conditions and potential breaches of Exchange Rules. 

• Support the monitoring and management of trading halts, volatility events, trade cancellations and other operational or market structure incidents during non-UK working hours. 

• Analyse trading data, surveillance outputs and market information to support supervisory assessments and investigations. 

• Prepare clear and accurate investigation summaries, reports, escalations and management information. 

• Respond to member firm enquiries and assist with supervisory follow-up activity under established procedures. 

• Apply knowledge of LSEG rule books, market structure, trading systems and venue controls when reviewing trading activity. 

• Support the maintenance and continuous improvement of surveillance controls, monitoring procedures and operational playbooks. 

• Work collaboratively with Operations, Compliance, Technology and Regulatory teams to support effective market oversight across multiple time zones. 

• Contribute to testing, readiness activities and process improvements supporting the continued development of the LSE 24 operating model. 

Qualifications and Experience 

Essential 

• Experience within financial markets, market operations, market supervision, surveillance, compliance, exchange operations or a similar environment. 

• Ability to analyse data and identify exceptions, trends or unusual activity. 

• Strong analytical and problem-solving skills with excellent attention to detail. 

• Ability to follow established procedures and make sound decisions in a time-sensitive environment. 

• Effective verbal and written communication skills. 

• Ability to build effective working relationships with internal stakeholders and market participants. 

• Proficiency in Microsoft Excel and other standard analytical tools. 

Desirable 

• Experience supporting market monitoring, surveillance or regulatory investigations. 

• Knowledge of MiFID II, MiFIR, MAR and their application to UK and European trading venues. 

• Understanding of financial market structure, trading venue operations and the order and trade lifecycle. 

• Experience monitoring equities, ETFs, ETPs, fixed income instruments or RFQ-based markets. 

• Familiarity with trading venue surveillance systems and market monitoring tools. 

• Understanding of extended-hours trading models and associated market structure considerations. 

• Experience using SQL, Python or other data analysis tools. 

• Knowledge of Exchange Rules and market abuse concepts. 

Career Stage:

London Stock Exchange Group (LSEG) Information:

Join us and be part of a team that values innovation, quality, and continuous improvement. If you're ready to take your career to the next level and make a significant impact, we'd love to hear from you.

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. Our values of Integrity, Partnership, Excellence and Change underpin our purpose and set the standard for everything we do, every day. They go to the heart of who we are and guide our decision making and everyday actions.

Working with us means that you will be part of a dynamic organisation of 25,000 people across 65 countries. However, we will value your individuality and enable you to bring your true self to work so you can help enrich our diverse workforce.

We are proud to be an equal opportunities employer. 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 will be part of a collaborative 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. Colleagues can get involved through fundraising and volunteering.

LSEG offers a range of tailored benefits and support, including healthcare, retirement planning, paid volunteering days and wellbeing initiatives.

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