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Professor Maggie Chen

Professor Maggie Chen

Personal Chair

School of Mathematics

Email
chenj60@cardiff.ac.uk
Telephone
+44 (0)29 2087 5523
Campuses
4.51, Abacws, Senghennydd Road, Cathays, Cardiff, CF24 4AG
Users
Available for postgraduate supervision

Overview

Research Group

I am a member of the Operational Research Group. I am, by training, a financial economist specialized in quantitative methods. I am interested in theory-underpinned finance research that focuses on real problems from the financial market and industry. Currently, I have established research groups to comprehensively study Hawkes processes and aim to apply them to various real problems, especially in new problems related to FinTech. My ultimate goal is to establish robust modeling frameworks that are directly applicable by practitioners and regulators.

I am currently leading a FinTech and Smart Finance SIG (Special Interest Group) under the Data Innovation Research Institution (DIRI, https://www.cardiff.ac.uk/data-innovation-research-institute/research/special-interest-groups). In conjuction with the Cardiff Fintech Research Group (https://www.cardiff.ac.uk/research/explore/research-units/cardiff-fintech-research-group), we are actively involved in promoting and establishing research in FinTech and work with the wide range of academic institutions, industry partners, government agencies etc. I am also the deputy theme lead for Economic Inteligence in the Cardiff University Strategic Partnership with the ONS, Data Innovation Accelerator  (DIA) program funded by the Welsh European funding office as well as the board member of the Finance & Economics SIG for Royal Statistical Society (RSS). She is the PI of a Welsh Data Nation Acceleration (WDNA) Super Sprint Project (2022). She is also the Co-I of a £2.5m EPSRC NetworkPlus for Financial Sector (2022-2027) grant, jointly with Newcastle, Edinburgh and Imperial College.

I am the program director for BSc Financial Mathematics, which was nominated to be the ' ‘Best Educational Program’ by the Welsh Government FinTech Award, 2019. I welcome Phd applications in line with one of the areas. MSc students with strong quants skills and interests in finance problems are encouraged to discuss the possiblity of a dissertation project.

Research Interests

  • Financial System Stability & Network Approach
    • Financial system stability & reliability
    • Financial Networks
    • New FinTech problems (e.g. smart finance), crypto trading, cyber risk, fraud detection etc.
  • Stochastic Point Processes (Hawkes Processes): Theory & Financial Applications
    • Volatility & financial jumps
    • Market Microstructure, Ultra-High Frequency Trading & Financial regulations
    • New portfolio optimization & risk strategies

Biography

Professor Jing (Maggie) Chen holds BSc in Computer Science from the Lanzhou Jiaotong University, China, MSc in Finance & Investment Management and PhD in Finance from the University of Aberdeen, UK (2011).

Prior to coming to the UK, Professor Chen worked at China Telecom and Dell (China) ltd. She started her business career as a computer software engineer, specialising in programming and system design before moving into company management and subsequently, pursuing an academic career in finance and investment. From September 2010 to August 2015, Professor Chen has held academic positions in the School of Management at Swansea University before joining Cardiff in 2015. During the 2014/2015 academic year, Maggie holds visiting/adjunct professorship in the Statistics Departments in both the Columbia University (New York City) and University College London. She now holds visiting positions in a few top Chinese Universities such as BJUT.

Maggie’s main research focus is on liquidity provision, information dynamics and their relation to policy changes in financial markets. To date, her research agenda has focused on modelling the effect of various liquidity measures on trading decisions in different segments of financial markets in both developed countries (e.g., the UK) and emerging economies (e.g., China). Recently, this research has mainly focused on applying Hawkes processes to model jumps in financial markets. The overarching goal of the research agenda has been to obtain more robust and powerful empirically derived measures of liquidity utilising market microstructure theories drawn from the academic finance literature. She anticipates that this area of research activity could help investors, analysts, regulators and others to better assess information on market liquidity, and so more effectively predict future prices and trades. The applications of Hawkes types of models can also be extended to users in other industries such as insurance, into which industry Maggie has invested time and effort to form good understanding.

Professor Chen has built-up an international research profile by publishing her work in leading academic finance journals. Her work has appeared in esteemed international scholarly journals including the Pacific Basin Finance Journal, European Journal of Finance, Journal of Economics Behaviour and Organisation and Journal of Forecasting. Additionally, her study on the link between CDSs and the current Eurozone sovereign debt crisis has been cited in the House of Lords and the Organisation for Economic Cooperation and Development (OECD).Her research was reported in the Financial Times in its edition of 14 November 2011. - See more at here.

Most recently, her research on Jump detection has attracted wide interest from the U.S. regulators and practitioners from the industry. This work is presented in the Commodity Futures Trading Commission (CFTC), the Office of Financial Research (OFR) and International Monetary Fund (IMF). Other on-going projects Maggie collaborates with CFTC will potentially build up policy impact in the area of High Frequency Trading. From June, 2020, I have been Deputy Lead of Economic Intelligence for the strategic partnership between Cardiff and Officie of National Statistics.

Between February 2016 and January 2022, she has been the Director of Internationals of the School of Mathematics and led the signing of MoAs (Memorandum of Agreement) with top universities and other institutions (e.g. Zhicheng School, Ningbo) in China and other regions.

She has chaired an EPSRC doctoral scholarship interview panel within the School of Mathematics and is a member of the School Board. Outside Cardiff,  she is currently the external examiner in finance at Bath, Stirling and Plymouth Universities. She also contributes to 'Women in Science' and 'Women in Mathematics' to encourage young girls and female academics to prosper.

Publications

2022

2021

2020

2019

2018

2017

2014

2013

2011

Teaching

MA1801 Finance I
MA3800 Behavioural Finance
MSc Dissertation supervision (also jointly with industry partners such as Principality, Lloyds & Admiral)
PhD Supervision

Maggie’s main research focus is on information dynamics, financial risk modeling, FinTech and their impact on financial markets,  policy changes and wider communities. To date, her research has been around modelling the effect of various risk measures and forecasting related to trading decisions in different segments of financial markets. Recently, this research has mainly focused on applying Hawkes processes to model financial jumps, systemic risk and portfolio decompositions. I have been working with a wide range of academics and professionals to look at new modeling approaches that can better reflect market provisions and decision making processes. The research has also expanded swiftly into the new areas of FinTech and Machine learning. The overarching goal of the research agenda has been to obtain more robust and powerful empirically derived measures of liquidity utilizing market microstructure theories drawn from the academic finance literature. She anticipates that this area of research activity could help investors, analysts, regulators and others to better assess information on market liquidity, and so more effectively predict future prices and trades. The applications of Hawkes types of models can also be extended to users in other industries such as insurance, into which industry Maggie has invested time and effort to form good understanding. Maggie has been speaking at various FinTech, finance, financial Mathematics conferences and engaging with the industry, regulatory and government agents. She is also the deputy lead of the 'Economic Intelligence' in the University's strategic partnership with the Officien of National Statistics (ONS), Data Innovation Accelerator  (DIA) program funded by the Welsh European funding office as well as the board member of the Finance & Economics SIG for Royal Statistical Society (RSS). She is the PI of a Welsh Data Nation Acceleration (WDNA) Super Sprint Project (2022). She is also the Co-I of a £2.5m EPSRC NetworkPlus for Financial Sector (2022-2027) grant, jointly with Newcastle, Edinburgh and Imperial College.

ORCID ID: https://orcid.org/0000-0001-7135-2116

Selected Publication

- Chen, J., Han, Q. & Tang, J (2022). Does the world smile together? A network analysis of global index option implied volatilities. International Financial Markets, Institutions and Money (JIFMIM). (10.1016/j.intfin.2021.101497)

-Chen, J., Han, Q., Guo, Q. & Zhao, C (2022). Re-examining the Impact of Closing Call Auction on Market Quality: A Natural Experiment from the Shanghai Stock Exchange. Pacific-Basin Finance Journal.  Forthcoming.

-Chen, J., Wen, J. and Zhang, J. (2021). Modelling market fluctuations under investor sentiment with a Hawkes-contact process. The European Journal of Finance (10.1080/1351847X.2021.1957699)

-Hawkes, A. and Chen, J. (2021). A personal history of Hawkes process. Proceedings of the Institute of Statistical Mathematics (統計数理) 69(1)

-Chen, J., Hawkes, A. & Scalas, E. (2021). A Fractional Hawkes Process. Spinger Sema-Simai Book chapter.

- Chen, J., Hawkes, A., Liu, A. & Yang, S. (2021). Information Transition Trading and its Effects on Market Efficiency: An Entropy Approach. Proceeding of the First International Academic Forum on Financial Mathematics and Financial Technology. Springer Financial Mathematics and Fintech book series (FMF).pp 59-77 https://doi.org/10.1007/978-981-15-8373-5

- Chen, J., Hawkes, A., Liu, A.& Yang, S. (2020). The flow of information in trading: an entropy approach to market regimes. Entropy 22(9), article number: 1064. (10.3390/e22091064)

- Chen, J., Calice, G. & Williams, J. (2020). The Importance of Jumps in Modeling Volatility during the 2008 Financial Crisis. The Journal of Derivatives. 27(3), pp45-74. https://doi.org/10.3905/jod.2019.1.094  

- Chen, J., Hawkes, A. & Khaldoun, K (2018). A Slightly Depressing Jump Model. Quantitative Finance, Special Issue on ‘Hawkes Processes in Finance’. 18 (2), pp 213-224. https://10.1080/14697688.2017.1403139    

- Chen, J., Hawkes, A., Scalas, E. & Trinh, M (2018). Performance of Information Criteria used for Model Selection of Hawkes Process Models of High-frequency Financial Data. Quantitative Finance, Special Issue on ‘Hawkes Processes in Finance’. 18 (2), pp 225-235. https://10.1080/14697688.2017.1403140  

- Chen, J., Hawkes, A., Liu, A. & Yang, S (2018). Applications of Multi-variate Hawkes Process to Joint Modelling of Sentiment and Market Return Events. Quantitative Finance, Special Issue on ‘Hawkes Processes in Finance’. 18 (2), pp. 295-310. https://10.1080/14697688.2017.1403156 

- Chen, J., Buckle, M. & Williams, J. (2014). Realized Higher Moments: Theory and Practice. The European Journal of Finance. Special Issue of papers presented at the Fifth International Conference on Mathematical and Statistical Methods for Actuarial Sciences and Finance. 33 (13), pp 1272-1291. http://dx.doi.org/10.1080/1351847X.2014.885456    

- Chen, J., Buckle, M. & Williams, J. (2014). How Predictable Are Equity Covariance Matrices? Evidence from High Frequency Data for Four Markets. Journal of Forecasting. 33 (7), pp 542-557. http://dx.doi.org/10.1002/for.2310  

- Chen, J., Calice, G. & Williams, J. & (2013). 'Are There Benefits to Being Naked? The Returns and Diversification Impact of Capital Structure Arbitrage'. The European Journal of Finance, 19 (9), pp. 815-840. DOI: https://10.1080/1351847X.2011.637115  (This is featured in Financial Times on Nov14, 2011 and is documented as evidence to the House of Lords).

- Chen, J., Calice, G. & Williams, J. (2013). Liquidity Interactions in Credit Markets: A Preliminary Analysis of the Eurozone Sovereign Debt Crisis. Journal of Economics Behavior and Organization. 85 (January), pp 122-143. https://10.1016/j.jebo.2011.10.013  (This is documented as a chapter for OECD Law Symposium proceedings, 2011).

Research Grant

-EPSRC Financial Services NetworkPlus (Cardiff Co-I). £2.5m. jointly with Newcastle (PI & Co-I), Edinburgh (Co-I) and Imperial College (Co-I). 03/2022-03/2027

-Wales Data Nation Acceleration Super Sprint Project (PI).  £27,599. 02/2022 - 03/2022.

Editorial Work & Affliation

-Associate Editor: International Review of Economics & Finance, 04/2022-

-Associate Editor: The European Journal of Finance, 08/2020-08/2023

-Associate Editor: IMA Journal of  Management Mathematics, 05/2021 -

-Associate Editor: Cogent Economics & Finance. 2017- 09/2017

-Guest Editor: The European Journal of Finance, special issue on 'Hawkes processes in finance, market structure and impact'. 2017-2019

-Guest Editor: Quantitative Finance, special issue on 'Hawkes processes in finance'. 2017-2018

- Theme Champion for Economy, Finance & Authonomou Systems, Alan Turing Institute Network, 04/2022-

- Finance and Economics Special Interest Group (SIG), Royal Statistical Society, 05/2021 – now

- Fintech and Smart Finance SIG Lead, Data Innovation Research Institute (DIRI), Cardiff University, 04/2-21- now

- Deputy lead, Economic Intelligence, Office for National Statistics (ONS)-Cardiff Strategic Partnership, 05/2020 – now

- Cardiff Fintech Research Group member, Cardiff University, 09/2020 – now

- FinTech skills agenda in Wales workgroup member, Fintech Wales, 03/2021-now

Supervision

Past projects

I am, by training, a financial economist specialized in quantitative methods. I am interested in theory-underpinned finance research that focuses on real problems from the financial market and industry. Currently, I have established research groups to comprehensively study Hawkes processes and aim to apply them to various real problems. My ultimate goal is to establish robust modeling frameworks that are directly applicable by practitioners and regulators. Here are a few problems I am actively working on at present and I welcome Phd applications in line with one of the areas. MSc students with strong quants skills and interests in finance problem are encouraged to discuss the possiblity of a dissertation project  related to my research interests.

Research Interests

  • Stochastic Point Processes (Hawkes Processes): Theory & Financial Applications
    • Volatility & financial jumps
    • Market Microstructure, Ultra-High Frequency Trading & Financial regulations
    • New portfolio optimization & risk strategies
  • Financial System Stability & Network Approach
    • Financial system stabiity & reliability
    • Financial Networks (dynamic networks)

Research students

  • Ms Gabriela Filipkowska (In progress). How the Infrastructure Governance of the Decentralized Crypto Market afftect the Crypto Trading Performance
  • Ms Fan Wu (In progress). Crypto Trading & Speculations
  • Mr Sebastien Pierre (In progress). Topic: Forecasting Modeling for Complex Financial Systems Utilising an Intensity Based Point Process.
  • Dr Xiaoxi Li (2016). Thesis: Impact of MiFiD on Financial Markets.
  • Dr Chen Tong (2016). Theis: Network Approach and Applications in Finance: Linking Financial Networks to Trade Networks.
  • Dr Aimee Ridsdale (2016). Thesis: How Trading Migration Affects the Market Structure: moving from OTC to Central Clearing Houses.