Dated 15 of March 2017 MARKETAXESS EUROPE LIMITED and Christophe Roupie

MarketAxess Europe Limited, whose registered office is at 5 Aldermanbury Square, London, EC2V 7HR (the "Company"); and

You represent and warrant that you are not prevented from taking up the Employment or from performing your duties under this contract by any obligation or duty owed to any other party, contractual or otherwise.

You represent and warrant that you will uphold all confidentiality provisions of previous employers to which you are subject.

You undertake to indemnify the Company against any claims, costs, damages, liabilities or expenses which the Company may incur as a result if you are in breach of any such obligations set out in clauses 2.2 and 2.3 above.

Your Employment is conditional upon the receipt by the Company of satisfactory references covering a period of employment of 5 years, a credit check and you being entitled to work in the UK without any additional approvals.

If applicable for your position, your Employment is also conditional upon you obtaining registration by the Financial Conduct Authority (or its replacement regulatory authority). an to   the   holding of any other   qualification,   licence, authority,   registration   or membership required (by statute or otherwise) for the proper performance of your duties under this contract.

If clauses 3.1and 3.2 cannot be satisfied or remains unfulfilled after such period of time as the Company considers reasonable, it may, at its sole and absolute discretion, terminate your Employment without notice, any payment in lieu of notice and shall not be liable to provide any form of compensation whatsoever.

The continuation of Employment following the take up of your position is subject to the satisfactory achievement of a   3 month probation period.   If the probation is not satisfactorily achieved, the Company may terminate your Employment by paying you base salary only in lieu of notice. The Company shall not be liable to provide any other form of compensation.

You acknowledge that you have not relied on any taxation or other financial advice from the Company or any other Group Company in deciding whether to enter into this agreement.

If the Company (acting in good faith) forms the opinion that it is necessary to do so, in order to comply with any binding law or regulatory requirements, including but not limited to remuneration law, regulations or regulatory guidance, the Company may, among other things, restructure your remuneration package to provide an alternative remuneration package which is consistent with law, regulation and regulatory guidance.

Either you or the Company shall give to the other no less than 3 months' written notice to terminate your employment or longer if required by law.

The Company reserves the right, at its sole and absolute discretion, to pay your base salary ("Basic Salary") only at the rate set out in clause 9.1in lieu of any period of notice given either by you or the Company (less any deductions of income tax, national insurance contributions, other statutory deductions and other agreed deductions).

The Company may elect to pay any sums due under clause 5.2 in equal monthly instalments less any deductions as shall be necessary to satisfy any performance adjustment or clawback provisions applicable to you.

If the Company exercises its right to make a payment pursuant to clause 5.3, and you receive income (whether as an employee, consultant or otherwise) during the period equal to your unexpired notice period, you must immediately notify the Company in writing of any income so received. Future monthly instalments shall be reduced by the amount of any such income. If you receive any such income after the last monthly instalment has been paid, you shall repay to the Company such part of this instalment as is equal to the income received but not deducted.

At any time during your Employment, or upon its termination, the Company shall be entitled to deduct from your Basic Salary or any other payment due to you in respect of your Employment (including your final salary payment) any monies due from you to the Company or any Group Company.

Your normal hours of work are 8.30am to 5.30pm, Monday to Friday, with a one hour lunch break per day ("your normal weekly hours"). You will comply with the Company's normal working hours and will also work any additional hours the Company considers necessary to meet its business needs. You will not receive further remuneration for any

You agree that for the purposes of the Working Time Regulations 1998 (the "Regulations") the performance of your duties pursuant to this agreement may require you to work more than 48 hours per week. You may withdraw your consent to work more than 48 hours per week by giving the Board not less than three months' notice.

You agree to keep records of your working hours as reasonably required by the Company from time to time in order to comply with its obligations under Regulations.

You are required at all times to comply with the Company's rules, policies and procedures in force from time to time.

You will promptly disclose to the Company full details of any wrongdoing by any employee of the Company or any Group Company where that wrongdoing is material to that employee's employment by the relevant company or to the interests or reputation of any Group Company.

You will devote the whole of your working time, attention and skill to your Employment and use your best endeavours to promote the interests and reputation of the Company and every Group Company.

You shall obey the directions of the Board and keep the Board (and, where appropriate the board of directors of any other Group Company) fully informed of your conduct of the Company and any other Group Company in a prompt and timely manner.

Salary will be paid in equal monthly instalments in arrears on or about the 24'h day of each calendar month, after deduction in income tax, national insurance contributions, other statutory deductions and other agreed deductions.

You are not entitled to any additional remuneration in respect of any hours worked in excess of your normal weekly hours.

The Company reserves the right to and you agree that it may recover from your salary payments, any overpayment of remuneration or other payments, made by mistake or through misrepresentation or for any other legitimate reason.

On termination of your Employment the Company may deduct from your final salary payment an amount equal to any sums you owe the Company or any Group Company.

In addition   to your Basic salary, you are eligible to participate in the Company's discretionary bonus scheme (the "Bonus Scheme") from 2017 onwards. Any bonus

The Company may in its absolute discretion pay you a bonus of such amount, at such intervals and subject to such conditions as the Company may in its absolute discretion determine from time to time.

Any bonus payment to you shall be purely discretionary and shall not form part of your contractual remuneration under this agreement.

Notwithstanding clause 10.3, you shall in any event have no entitlement to a bonus or a time-apportioned bonus if your employment terminates for any reason or you are under notice of termination (whether given by you or the Company) at or prior to the date when a bonus might otherwise have been payable.

Notwithstanding   any other clause in this clause 10, you will   receive a   minimum guaranteed cash bonus of £300,000 for performance year 2017 only, on an exceptional basis, payable when bonuses are paid to employees of the Company. The payment under this clause 10.5 is subject to deduction of income tax, national insurance contributions, other statutory deductions and other agreed deductions. You shall have no entitlement to a bonus or a time-apportioned bonus under this clause 10.5 if you do not commence employment with the Company, and/or your employment terminates for any reason or you are under notice of termination (whether given by you or the Company) at or prior to the date when that bonus might otherwise have been payable.

In addition to your salary you may, at the Company's sole and absolute discretion, be eligible to take part in a Company share scheme. If you are eligible to take part in such a scheme, the Company will advise you in due course. This is for your information only, and is not intended to be a contractually binding part of your contract.

Notwithstanding the above, you will be granted a performance-based restricted stock award of MarketAxess Holdings Inc. common stock ("MKTX") valued at £1,400,000 on the first day of the month after the Commencement Date (or on the Commencement Date, if the first day of the month).

The target number of shares will be determined on a US Dollar basis using the market rate at the time of processing and will be calculated by the Company as follows:   award value divided by the average price of MKTX on the ten {10) trading days up to and including the Award Date, rounded to the nearest full share.   The award will vest in two annual instalments: Fifty percent {50%) will vest on each of the third and fourth anniversaries of the Award Date.

The actual number of shares earned is contingent upon meeting Company and regional financial performance targets and subject to reduction and forfeiture, as outlined in the respective award agreement.

The award will be subject to and governed by the provisions of the MarketAxess Holdings Inc. 2012 Incentive Plan and its respective agreements. The grant is subject to the full execution of a restricted stock agreement by you and MarketAxess Holdings Inc.

You are entitled to 25 days paid holiday in each holiday year ("holiday entitlement"), accruing on a daily basis in addition to the usual English bank and other public holidays. This will be pro-rated in the year of joining and leaving the Company and the resulting entitlement will be rounded up to the nearest whole day.

You must agree the dates of your holidays in advance with your line manager. You agree that the provisions of Regulations 15(1) to (4) of the Regulations (dates on which leave is taken) do not apply to your Employment.

You may carry forward a maximum of 5 days' holiday entitlement from one holiday year to the next.   Any carry over holiday entitlement must be taken by 31 March of the subsequent holiday year or it will be forfeited.

On termination of your Employment you will be paid in respect of any holiday entitlement accrued but not taken unless your Employment is terminated for gross misconduct. The Company may require you to take any accrued holiday during any notice period. If you have taken holiday in excess of your entitlement at your Termination Date, the Company may deduct from your final salary an amount that is equal to 1/260 of your annual Basic Salary payable under clause 9.1multiplied by the number of excess days of holiday taken.

If you are absent from work due to sickness or injury, you must inform the office no later than Sam on the first day of absence.

If you are absent from work due to sickness or injury, you must inform the office no later than Sam on the first day of absence.

If you are away from work for seven calendar days or less, you must complete an online self-certification. For absences of more than seven calendar days you must provide a medical certificate from your doctor. Further medical certificates will be required for the remainder of the period of your absence.

The Company reserves the right, at any time, to require you to undergo a medical examination or Occupational Health at the Company's expense. You agree that the medical adviser may disclose the results of the examination to the Company. You also agree that you will provide, at the Company's reasonable request, a copy of your GP's report on any medical condition, illness or injury relevant to your Employment.

Subject to the Employee's compliance with this agreement and the Company's sickness absence procedures (as amended from time to time), the  Employee shall continue to receive his/her full salary and contractual benefits during any period of absence due to sickness or injury for up to an aggregate of 26 weeks in any 52-week period. Such payment shall be inclusive of any Statutory Sick Pay due in accordance with applicable legislation.

If you are absent from work due to sickness or injury caused by the fault of another person, and you recover any sum representing compensation for loss of salary under this contract of employment from that person or another person, you agree to repay to the Company any money it has paid to you under clause 16.4 above as salary in respect of the same period of absence.

The Company may terminate your Employment by giving written notice to take immediate effect whether or not your entitlement to any sick pay, contractual or otherwise, has been exhausted or even when such termination   would or might cause you to forfeit any entitlement to Group Income Protection or other benefits if you do not perform your duties of employment for a period of 180 days (whether or not consecutive) in any period of 365 days because of sickness, injury or other incapacity. This notice can be given whilst you continue not to perform your duties or on expiry of the 180 day period. In this clause,

You agree that you will not use, divulge or disclose to any person, firm or organisation (except as required by law or to carry out your employment duties with the Company) any trade secrets or other confidential information relating to the business, finances or affairs of the Company or any Group Company, or any other information provided on the basis that it is confidential.   You also agree that you will sign and abide by the Confidentiality Statement, which will form part of this contract of employment.

This restriction will continue to apply after your employment ends without limit in time but will not apply to information which becomes public, unless through unauthorised disclosure by you.

Nothing in this contract is intended to exclude, restrict or limit in any way any right you may have to make a protected disclosure under the Employment Rights Act 1996, or to raise "reportable   concerns" in accordance with   the   Financial Conduct Authority Handbook.

You will promptly inform the Company if you make or are involved in making an Invention during your Employment and will give the Company sufficient details of it to allow the Company to assess the Invention and to decide whether the Invention belongs to the Company. The Company will treat any Invention which does not belong to it as confidential.

If an Invention belongs to the Company, you will act as a trustee for the Company in relation to that Invention and you will, at the request and expense of the Company, do everything necessary to:

If you create or are involved in creating any Work during the Employment, you will promptly give the Company full details of it.

If you generate any Information or are involved in generating any Information during the Employment you will promptly give to the Company full details of it and you acknowledge that such Information belongs to the Company.

If you become aware of any infringement or suspected infringement of any intellectual property right in any Invention, Work or Information you will   promptly notify  the Company in writing.

You will not disclose or make use of any Invention, Work or Information without the Company's prior written consent except to comply with this clause 16 or as necessary for the proper performance of your duties.

So far as permitted by law you irrevocably waive any rights you may have under Chapter IV (moral rights) of Part 1of the Copyright, Designs and Patents Act 1988 and any foreign corresponding rights in respect of all Works.

Rights and obligations under this clause 16 will continue after the termination of your Employment in respect of all Inventions, Works and Information made or obtained during your Employment and will be binding on your personal representatives.

You agree that you will not by your acts or omissions do anything that would or might prejudice the rights of the Company under this clause 16.

By entering into this agreement you irrevocably appoint the Company to act on your behalf to execute any document and do anything in your name for the purpose of giving the Company (or its nominee) the full benefit of the provision of this clause 16 or the Company's entitlement   under statute. If there is any doubt as to whether such a document (or other thing) has been carried out within the authority conferred by this clause 16.12, a certificate in writing (signed by any director or the secretary of the Company) will be sufficient to prove that the act or thing (in the absence of any manifest error) falls within that authority.

You must disclose promptly in writing to the Company's General Counsel, or designee, from time to time your financial interests, to the extent that this is required to fulfil your regulatory obligations, and as set out in the Compliance Manual.

You will comply, and will procure that any person 'closely associated' (as such term is defined in the Market Abuse Regulation No. 596/2014) with you complies, with all rules of law (including the Market Abuse Regulation and Part V of the Criminal Justice Act 1993), the Company's share dealing code, and any other applicable codes or policies in relation to the holding and trading of securities, including in relation to the disclosure of inside information and of dealings.

At any time after notice to terminate employment is given by either party, or if you resign without giving due notice and the Company does not accept your resignation, the Company may at its absolute discretion require you to take a period of absence called garden leave for a maximum period of 3 months (the "Garden Leave Period"). The provisions of this clause shall apply to any Garden Leave Period.

The Company may require you to immediately resign from any directorship, trusteeships or other offices which you hold in the Company, any other Group Company or any other company where such directorship or other office is held as a consequence or requirement of your Employment, unless you are required to perform duties to which any such directorship, trusteeship or other office relates in which case you may retain such directorships, trusteeships or other offices while those duties are ongoing. You hereby irrevocably appoint the Company to be your attorney to execute any instrument and do anything in your name and on your behalf to affect your resignation if you fail to do so in accordance with this clause 18.3.

During the Garden Leave Period, you will be entitled to receive your salary and all contractual benefits (excluding bonuses) in accordance with the terms of this agreement. Any unused holiday accrued at the commencement of the Garden Leave Period and any holiday accrued during any such period will be deemed to be taken by you during the Garden Leave Period.

During the Garden Leave Period all duties of your Employment (whether express or implied) including without limitation your duties of fidelity, good faith and exclusive service, shall continue throughout the Garden Leave Period.

At the end of the Garden Leave Period, the Company may, at its sole and absolute discretion, pay to you Basic Salary alone in lieu of the balance of any period of notice given by the Company or you (less deductions of income tax, national insurance contributions, other statutory deductions and other agreed deductions).

The Company's dismissal, disciplinary and grievance procedures as set out in the Company's Disciplinary Policy and Grievance Policy are applicable to you. These procedures are non-contractual.

The following are examples of conduct which is not acceptable to the Company and which may result in disciplinary action being taken against you. The list is intended as guidance only and should not be considered exhaustive:

Examples of gross misconduct are serious incidents of any of the matters listed above and, by way of further example, the following:

acts of discrimination or harassment (including,but not limited to, breaches of the Company's Equal Opportunities or Anti-bullying and harassment policies in force from time to time);

The Company reserves the right to suspend you from employment with   pay for a reasonable period while investigating any alleged breach of the Company's disciplinary rules.

If you are disciplined for a failure to meet the required standards of work performance, the Company may move you to suitable alternative work, if this is available.

If you are found to have committed any act of gross misconduct, the Company may terminate your employment immediately without notice and without pay in lieu of notice.

You are likely to obtain trade secrets and confidential information and personal knowledge of and influence over clients and employees of the Group during the course of

Each of the paragraphs contained in clause 21.2 constitutes an entirely separate and independent covenant. If any covenant is found to be invalid this will not affect the validity or enforceability of any of the other covenants.

Following the Termination Date, you will not represent yourself as being in any way connected with the businesses of the Company or of any other Group Company (except to the extent agreed by such a company).

Any benefit given or deemed to be given by you to any Group Company under the terms of this clause 21 is received and held on trust by the Company for the relevant Group

For the purposes of the Data Protection Act 1998 (the "Act") you give your consent to the holding, processing and disclosure of your personal data (including sensitive personal data within the meaning of the Act) provided by you to the Company for all purposes relating to the performance of this contract of employment including, but not limited to:

You acknowledge that during the Employment you will have access to and process, or authorise the processing of, personal data and sensitive personal data relating to employees, customers and other individuals held and controlled by the Company.

You agree to comply with the terms of the Act (and any other relevant legislation in force from time to time) and to abide by the Company's data protection policy issued from time to time.

You will have no claim against the Company if your Employment is terminated by reason of liquidation in order to reconstruct or amalgamate the Company or by reason of any reorganisation of the Company and:

Any notices given under this agreement must be given by letter or fax. Notice to the Company must be addressed to its registered office at the time the notice is given. Notice provided to you by the Company shall be given personally or sent to your last known address.

Except for notices given by hand, notices given by post will be deemed to have been given on the next working day after the day of posting and notices given by fax will be deemed to have been given in the ordinary course of transmission.

If either party agrees to waive his rights under a provision of this agreement, that waiver will only be effective if it is in writing and it is signed by him. A party's agreement to waive any breach of any term or condition of this agreement will not be regarded as a waiver of any subsequent breach of the same term or condition or a different term or condition.