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Saturday 19 January 2019

Latest research article: is bitcoin the new digital gold?


My latest research article on crypto-cuurencies written with Konstantinos Gkillas: Is bitcoin the new digital gold?

Is bitcoin the new digital gold? To answer this question, we investigate the potential benefits of bitcoin during extremely volatile periods. We use multivariate extreme value theory, which is the appropriate statistical approach to model the tail dependence structure.

Considering first a position in equity markets, we find -similarly to previous studies- that the correlation of extreme returns increases during stock market crashes and decreases during stock market booms. Then, by combining each equity market with bitcoin, we find that the correlation of extreme returns sharply decreases during both market booms and crashes, indicating that bitcoin could provide the sought-after diversification benefits during turbulent times.

A similar result is obtained for gold, confirming its well-recognized status of a safe haven when a crisis happens. Furthermore, we find a low extreme correlation between bitcoin and gold, which implies that both assets can be used together in times of turbulence in financial markets to protect equity positions. Such evidence indicates that bitcoin can be considered as the new digital gold. However, gold itself can still play an important role in portfolio risk management.

Thursday 30 January 2014

On the shortness of life


Following the advice of my colleague, Jean-Marie Choffray, professor of marketing at ESSEC, I've just read a text by Seneca about the shortness of life.

I found it very interesting in terms of investment and would like to share it with you.

Monday 16 July 2012

Introducing ESSEC Knowledge

Just a few words to introduce ESSEC Knowledge. This is the new on-line portal launched by ESSEC Business School in France. As explained by Radu Vranceanu (Director of ESSEC research center), the idea is to share the expertise of ESSEC researchers with a great number of readers interested in the topic of management, and shed new light on current issues.

What can we fiund on this website? Exclusive articles, videos, presentations, case studies, an online library, and a full range of digital tools, etc.

As an ESSEC professor, I am fully committed to this project. Researchers should try to reach a broad audience because the goal of research is to improve society. Note that such an apporach was put in practice by great professors like Milton Friedman who published many books for the general public. Personnally, I'll share with ESSEC Knowledge many of the materials available on this website:

Listen to Sarah Brown in the presentation video to know more about this project. Sarah who is the manager of ESSEC Knowledge, is the person to contact.

Click here to view the video

Saturday 28 April 2012

Academic research: destination for the 21st century

Please find below my personal thoughts about academic research in Social Sciences.

What about academic research?

Research is business

Research is a business like any business. Research articles written by professors are just products and as every product, it has to be produced, distributed and most importantly sold (if not bought). The distribution of research articles traditionally ranged from conferences to publications in books and journals; nowadays, the internet is also becoming more and more important to promote research. The selling of research corresponds to the impact of research articles and is measured by the number of citations. Nowadays, Google Scholar, by publicizing information about research works, has become the yardstick for measuring research impact.

Money and incentives for researchers should be on the production side, on the distribution side and on the selling side as well.

Research in rankings

Rankings of academic institutions are mainly based on research. Let’s take two examples: the Shanghai ranking (academic ranking of world universities or ARWU) and the ranking of the well-respected Times Higher Education review. The methodology used to rank institutions clearly focuses on the quality of research and especially on the impact of research.

The criteria of Shanghai ranking used to rank institutions in the category Social Sciences are the following:

  • 10% Alumni of an institution winning Nobel Prizes in Economics
  • 15% Staff of an institution winning Nobel Prizes in Economics
  • 25% Highly cited researchers
  • 25% Papers indexed in Social Science Citation Index
  • 25% Percentage of papers published in top 20% journals

The criteria of the ranking by the Times Higher Education review used to rank institutions in the category Social Sciences are the following:

  • 32.5% Citations – Research influence
  • 30% Research – Volume, income and reputation: 19.5% for reputational surveys about the research of the institution, 5.25% for research income, 4.5% for papers per academic and research staff and 0,75% Public research income / Total research income
  • 30% Teaching – The learning environment
  • 5% International mix – Staff and students
  • 2,5% Industry income – Innovation

These rankings clearly show that beyond publications, it is the quality of research and more importantly the impact of research that is taken into account. For Shanghai’s ranking, 75% of the criteria are based on the impact of research (Nobel Prizes, highly cited researchers and citations). In the ranking of the Times Higher Education review, a published and cited article has 8 times more impact than an article which is not cited but only published (even in an excellent review).

I believe that these rankings (especially Shanghai ranking) will play a more and more important role in the future by differentiating academic institutions. Academic institutions that will be (well) ranked will have a strong competitive advantage.

Research incentives for the 21st century

In order to improve research performance, I propose the following:

On the production side

  • Research budget for professors to cover production costs such as databases, research assistants, etc.

On the distribution side

  • Research budget for professors to cover distribution costs such as participation to conferences and promotion of research on the internet
  • Financial rewards for publications in top journals

On the selling side

  • Financial rewards for the impact of research (number of citations in top journals)
  • Financial rewards for being a highly cited researcher
  • Financial rewards for winning the Nobel Prize in Economics.

Monday 19 September 2011

ESSEC will be present at Patrimonia

Patrimonia is the exhibition for professionals in the wealth management area. It takes place in Lyon on September 29 and 30 2011. Every year it gathers professionals such as financial advisors, investment bankers, real estate managers… ESSEC will be at Patrimonia to present its wealth management program for professionals. You can visit ESSEC at the stand E33.

ESSEC wealth management program is meant for financial advisers working in the asset management and wealth management areas. The program is composed of short seminars given on the ESSEC campus in La Defense (Paris business district). This feature enables participants to follow the program while continuing their full-time job activities. The program can also entitle graduating students to the ESSEC Wealth management certificate.

Examples of seminars offered: wealth management overview, legal and fiscal environment; real estate investment, bargaining and selling, and modern portfolio management techniques.

For more information please visit Patrimonia website and ESSEC Wealth management training website.

Saturday 16 October 2010

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