Observe · Regulate · Protect — since 2007. 19th OIMAP General Assembly: Singapore, 10–12 June 2026. Programme
Market

Team

The management, analysts and scientific council that bring the OIMAP Observatory to life.

Updated : October 28, 2026· 3 min read

Fourteen professionals and nine scientists

Nuova pianta di Roma data in luce da Giambattista Nolli l’anno MDCCXLVII, known as La Pianta Grande di Roma, Giovanni Battista Nolli (1748)
Nuova pianta di Roma data in luce da Giambattista Nolli l’anno MDCCXLVII, known as La Pianta Grande di Roma, Giovanni Battista Nolli (1748)

The Observatory brings together fourteen analysts and statisticians in Paris, supported by an independent scientific council of nine members from eight countries.

The team combines economists, statisticians, art historians and lawyers. This diversity ensures that the figures are read through the eyes of those who know the works and the rules of the market.

This page presents the managers, the roles and the principles of ethics that apply to each.

  • Management
  • Analysts
  • Scientific council

The team in figures

14Staff
9Scientific advisers
8Nationalities on the council
11Languages spoken

Source: OIMAP Observatory.

Management and analysts

Dr. Camille RousselDirector of the Observatory

Art market economist, specialist in price indices.

Léo MarchandLead analyst

In charge of the global index and the monthly notes.

Aïcha BenaliStatistician

Quality control of declarations and matching of sales.

Mateo AlvarezRegional analyst

Markets of Latin America and Africa.

Yuki NakamuraRegional analyst

Markets of Asia-Pacific and the Middle East.

Hugo LefèvreHead of open data

Databases, API and documentation.

The scientific council

Prof. Ingrid SørensenChair

Statistician, University of Oslo.

Prof. Kwame BoatengMember

Development economist, Accra.

Prof. Elena RossiMember

Art market historian, Milan.

Hélène VasseurMember

Gallery owner and representative of operators.

Leaf from a Psalter and Prayerbook: Ornamental Border with Carnations, a Thistle, and a Cook Ladling Soup (verso) (c. 1524)
Leaf from a Psalter and Prayerbook: Ornamental Border with Carnations, a Thistle, and a Cook Ladling Soup (verso) (c. 1524)
Seal Color Box (1662–1722)
Seal Color Box (1662–1722)
Medal: In Commemoration of the Fiftieth Anniversary - The Warner and Swasey Company, Victor D. Brenner (1930)
Medal: In Commemoration of the Fiftieth Anniversary - The Warner and Swasey Company, Victor D. Brenner (1930)

How the team works

Each indicator has a designated lead, a deputy and a reviewer. No statistic is published without a second reading. Analysts may have no interest in the market they study: they declare their holdings and refrain from buying or selling works.

The scientific council meets four times a year. It examines the method, the revisions and requests for access to data. It publishes an annual opinion, attached to the activity report.

Course of a publication

  1. Drafting

    The analyst writes the note and prepares the tables.

  2. Review

    A second analyst checks the figures.

  3. Validation

    Management authorises publication.

  4. Going online

    The note is published with its data.

  5. Follow-up

    Press questions are handled within 48 hours.

Breakdown of team profiles

Statistics and economics6
Art history3
Law and compliance2
IT and data3

Number of staff by field.

The stages of the team

  1. Three founders

    Creation of the statistical service.

  2. Ten staff members

    Launch of the global index.

  3. Scientific council

    First independent council.

  4. Fourteen staff members

    Reinforcement on open data.

Ethics

Internal team and scientific council

View of Venice, Jacopo de' Barbari (1500)

Internal team

Fourteen staff members in Paris
  • Produces the statistics
  • Responds to requests
  • Publishes the notes

Execution.

Telescoping basket (1800's)

Scientific council

Nine members from eight countries
  • Checks the method
  • Examines the revisions
  • Publishes an annual opinion

Oversight.

Plaque (1500s–1600s)
Plaque (1500s–1600s)
Peregrine Falcons (Duck Hawks), John James Audubon (c. 1827)
Peregrine Falcons (Duck Hawks), John James Audubon (c. 1827)
Nuova pianta di Roma data in luce da Giambattista Nolli l’anno MDCCXLVII, known as La Pianta Grande di Roma, Giovanni Battista Nolli (1748)
Nuova pianta di Roma data in luce da Giambattista Nolli l’anno MDCCXLVII, known as La Pianta Grande di Roma, Giovanni Battista Nolli (1748)

Joining the team

An analyst

An Indigo Factory, Allahabad, Louis-Théophile Marie Rousselet (1865–68, published 1869–70)
« Every figure we publish ends up being cited. That demands rigour. »
Aïcha Benali, statistician

Vocabulary of the team

Reviewer
Person who checks work before publication.
Declaration of interests
Document listing links with the market.
Deputy
Person who stands in for the head of an indicator.
Annual opinion
Text of the scientific council on the method.

Frequently asked questions

How can I contact an analyst?

By email at the Observatory's address or through the contact form.

Are council members paid?

They receive an attendance fee, unconnected with the results.

Can an intern be taken on?

Yes, the Observatory hosts six interns a year.

Where can I read the full mission?

On the Mission page.

Useful documents

Contacts

Temple of Ramesses II, Abu Simbel, Antonio Beato (c. 1860s)
Temple of Ramesses II, Abu Simbel, Antonio Beato (c. 1860s)
OIMAP ObservatoryParis — Headquarters+33 1 00 00 01 00observatoire@oimap.exampleMonday to Friday, 9 am – 5 pm

Ask a question

Chemin de fer de Toulouse à Bayonne. Pont de l'Aran (en trois arches de 17m d'ouverture chacune). Situation des travaux au 21 juillet 1861, Édouard Baldus (1861)

Write to the Observatory team.

Contact us
Image credits (16)
  • Flowers and Trees of the Four Seasons, Watanabe Shikō (early-mid 1700s) — Cleveland Museum of Art, CC0 1.0
  • Nuova pianta di Roma data in luce da Giambattista Nolli l’anno MDCCXLVII, known as La Pianta Grande di Roma, Giovanni Battista Nolli (1748) — Cleveland Museum of Art, CC0 1.0
  • Leaf from a Psalter and Prayerbook: Ornamental Border with Carnations, a Thistle, and a Cook Ladling Soup (verso) (c. 1524) — Cleveland Museum of Art, CC0 1.0
  • Seal Color Box (1662–1722) — Cleveland Museum of Art, CC0 1.0
  • Medal: In Commemoration of the Fiftieth Anniversary - The Warner and Swasey Company, Victor D. Brenner (1930) — Cleveland Museum of Art, CC0 1.0
  • View of Venice, Jacopo de' Barbari (1500) — Cleveland Museum of Art, CC0 1.0
  • Telescoping basket (1800's) — Cleveland Museum of Art, CC0 1.0
  • Plaque (1500s–1600s) — Cleveland Museum of Art, CC0 1.0
  • Peregrine Falcons (Duck Hawks), John James Audubon (c. 1827) — Cleveland Museum of Art, CC0 1.0
  • Nuova pianta di Roma data in luce da Giambattista Nolli l’anno MDCCXLVII, known as La Pianta Grande di Roma, Giovanni Battista Nolli (1748) — Cleveland Museum of Art, CC0 1.0
  • An Indigo Factory, Allahabad, Louis-Théophile Marie Rousselet (1865–68, published 1869–70) — Cleveland Museum of Art, CC0 1.0
  • Temple of Ramesses II, Abu Simbel, Antonio Beato (c. 1860s) — Cleveland Museum of Art, CC0 1.0
  • Annunciation to the Shepherds: Leaf from a Book of Hours (1 of 6 Excised Leaves), Henri d'Orquevaulx (c. 1420–30) — Cleveland Museum of Art, CC0 1.0
  • Taj Mahal, Back View of the Rest-House, with Figure, Dr. John Murray (c. 1858–1862) — Cleveland Museum of Art, CC0 1.0
  • Seal with Two Qilin Playing (1849) — Cleveland Museum of Art, CC0 1.0
  • Chemin de fer de Toulouse à Bayonne. Pont de l'Aran (en trois arches de 17m d'ouverture chacune). Situation des travaux au 21 juillet 1861, Édouard Baldus (1861) — Cleveland Museum of Art, CC0 1.0
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