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24 October 2026 · Updated at 07:47 GMT FR EN ES Member area Log in
Market

Monthly trend

The curve of the OIMAP global index month by month in 2024, with the events that moved it.

Updated : October 28, 2026· 3 min read

Twelve months of almost continuous rise

Portrait of Gianfrancesco Gonzaga di Ròdigo, 1443–1496, Lord of Sabbionetta (reverse), Antico (1479)
Portrait of Gianfrancesco Gonzaga di Ròdigo, 1443–1496, Lord of Sabbionetta (reverse), Antico (1479)

In 2024, the OIMAP global index went from 155.1 in January to 163.4 in December. Only one month, July, recorded a slight fall.

The monthly curve shows the trend more finely than the annual figure. It reveals the seasonality of the market: sales are more numerous in spring and autumn, prices calmer in summer.

This page presents the values, the highlights and how to read the series without being surprised by revisions.

  • 2024
  • Monthly
  • Base 100

2024 in a few landmarks

155.1January 2024
163.4December 2024
+5.3%January–December rise
−0.3%July fall

Values of the global index, base 100 in January 2015.

Monthly values of the index in 2024

Monthly series 2024
MonthIndexMonthly change
January155.1+0.4%
February155.9+0.5%
March157.2+0.8%
April158.0+0.5%
May159.3+0.8%
June160.1+0.5%
July159.6−0.3%
August158.9−0.4%
September160.8+1.2%
October162.0+0.7%
November162.9+0.6%
December163.4+0.3%

The last three months may be revised.

Monthly change in the index (basis points)

March+0.8%
May+0.8%
September+1.2%
October+0.7%
July−0.3%

The bars represent the absolute size of the change.

Dune Scene with Peasant Figures, Willem van de Velde (mid-1650s)
Dune Scene with Peasant Figures, Willem van de Velde (mid-1650s)
Yokkaichi: View of the Mie River, from the series The Fifty-Three Stations of the Tōkaidō, Utagawa Hiroshige (c. 1833–34)
Yokkaichi: View of the Mie River, from the series The Fifty-Three Stations of the Tōkaidō, Utagawa Hiroshige (c. 1833–34)
Seven Jeweled Mountain (late 1800s)
Seven Jeweled Mountain (late 1800s)

Reading the curve

The first quarter rises steadily, driven by spring sales of modern painting and contemporary art. The second quarter extends the trend to June, then the market pauses for the summer.

The September return produces the strongest rise of the year, +1.2%, with the resumption of the major autumn sales. The end of the year confirms the trend, with an expected levelling off in December.

Highlights of 2024

  1. Spring sale in Paris

    Revival of old masters and the 19th century.

  2. New Member States

    The index incorporates declarations from two additional States.

  3. International fairs

    High volume of contemporary art.

  4. Summer pause

    Fewer public sales, stable prices.

  5. Major autumn sales

    Strongest monthly rise of the year.

  6. Record of the season

    Several sales above €30M.

Seasonality

Monthly change or year-on-year change

Medal Commemorating Commodore Oliver Hazard Perry (1785-1819) and the Battle of Lake Erie, Moritz Fürst (1813)

Monthly change

Month against the previous month
  • Responsive
  • Sensitive to the season
  • May be revised

To follow the economic outlook.

Arrival of the "Southern Barbarians" (c. 1600)

Year-on-year change

Month against the same month a year earlier
  • Neutralises the season
  • More stable
  • Slower to react

To judge the trend.

How each month is published

  1. Closing

    The month's sales declarations are closed off.

  2. Check

    Duplicates and doubtful sales are discarded.

  3. Calculation

    The index is recalculated with the new pairs.

  4. Review

    An analyst validates consistency with previous months.

  5. Publication

    The value goes online on the tenth working day.

Before citing a monthly value

Christ Driving the Money Changers from the Temple, Rembrandt van Rijn (1635)
Christ Driving the Money Changers from the Temple, Rembrandt van Rijn (1635)
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)
Medal of Claude Joseph Rouget de L'Isle (1760-1836), Alfred Borrel (1911)
Medal of Claude Joseph Rouget de L'Isle (1760-1836), Alfred Borrel (1911)

An analyst

Nuova pianta di Roma data in luce da Giambattista Nolli l’anno MDCCXLVII, known as La Pianta Grande di Roma, Giovanni Battista Nolli (1748)
« One month does not make a trend, but three months begin to sketch one. »
Léo Marchand, analyst at the Observatory

Vocabulary of the series

Year-on-year change
Change in a value compared with the same month a year earlier.
Revision
Correction of a value already published.
Provisional value
Value liable to be revised for three months.
Seasonality
Regular variation linked to the time of year.

Frequently asked questions

Why does the index fall in summer?

The market slows: few public sales, absent buyers, calmer prices.

Can a published value change?

Yes, for three months, slightly: from 0.1 to 0.3 points in general.

Where can I find the months before 2024?

In the databases.

Does the series include private sales?

Yes, when they are declared by an approved operator.

Useful documents

Contacts

Small Mosque in the Kaiserbagh, Felice A. Beato (1858)
Small Mosque in the Kaiserbagh, Felice A. Beato (1858)
OIMAP ObservatoryParis — Headquarters+33 1 00 00 01 00observatoire@oimap.exampleMonday to Friday, 9 am – 5 pm

See the segments

Creamer, Louis Rorimer (c. 1910)

Which segment rose the most in 2024?

Index by segment
Image credits (16)
  • 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
  • Portrait of Gianfrancesco Gonzaga di Ròdigo, 1443–1496, Lord of Sabbionetta (reverse), Antico (1479) — Cleveland Museum of Art, CC0 1.0
  • Dune Scene with Peasant Figures, Willem van de Velde (mid-1650s) — Cleveland Museum of Art, CC0 1.0
  • Yokkaichi: View of the Mie River, from the series The Fifty-Three Stations of the Tōkaidō, Utagawa Hiroshige (c. 1833–34) — Cleveland Museum of Art, CC0 1.0
  • Seven Jeweled Mountain (late 1800s) — Cleveland Museum of Art, CC0 1.0
  • Medal Commemorating Commodore Oliver Hazard Perry (1785-1819) and the Battle of Lake Erie, Moritz Fürst (1813) — Cleveland Museum of Art, CC0 1.0
  • Arrival of the "Southern Barbarians" (c. 1600) — Cleveland Museum of Art, CC0 1.0
  • Christ Driving the Money Changers from the Temple, Rembrandt van Rijn (1635) — 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
  • Medal of Claude Joseph Rouget de L'Isle (1760-1836), Alfred Borrel (1911) — 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
  • Small Mosque in the Kaiserbagh, Felice A. Beato (1858) — Cleveland Museum of Art, CC0 1.0
  • Stater: BODVOC on plain field (obverse); Horse, Wheel, and Crescent (reverse) (10 BCE–20 CE) — Cleveland Museum of Art, CC0 1.0
  • View of Venice, Jacopo de' Barbari (1500) — Cleveland Museum of Art, CC0 1.0
  • The Triumph of Mordecai, Lucas van Leyden (1515) — Cleveland Museum of Art, CC0 1.0
  • Creamer, Louis Rorimer (c. 1910) — Cleveland Museum of Art, CC0 1.0
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