Why Does the Art Market Move in Seasons?

Every October, something happens to London’s art world.

Major works arrive at Christie’s and Sotheby’s. International galleries prepare some of their most important presentations. Collectors, advisers, dealers and museum figures fly into the city. Frieze London and Frieze Masters open in Regent’s Park from 14–18 October, while exhibitions, previews, dinners and events fill the calendar around them.

This year is no exception. Christie’s October evening sale is led by Piet Mondrian’s Composition III, estimated at £20-30 million, alongside David Hockney’s Dog Painting 17, estimated at £1.5-2.5 million and the first of his celebrated dog paintings ever to appear at auction. The following day, Phillips will offer Banksy’s Keep Ou T at £1.2-1.8 million. With the major evening sales unfolding alongside Frieze Week, some of the biggest names, works and collectors in the market will converge on London within the space of just a few days.

That timing is not a coincidence. The international art market has developed a yearly rhythm around the moments when collectors, dealers, advisers and institutions are most active. Rather than activity being spread evenly throughout the year, attention becomes concentrated around a relatively small number of important weeks and cities.

Understanding why tells us quite a lot about how the art market actually works.

London in October is one example, but the same pattern can be seen internationally. New York has traditionally had major auction seasons in May and November, while Hong Kong has important spring and autumn periods. London has several established auction moments throughout the year, with October becoming particularly significant because of Frieze.

Once London’s October season concludes, attention will turn to New York in November, where another run of major sales begins. Works from the Hedreen Collection will be offered across Sotheby’s New York auctions from 16–19 November, led by Roy Lichtenstein’s Reflections on “Painter and Model”, estimated at $20–30 million, while Christie’s November sales will bring further major private collections to market.

There are practical reasons for this. The summer months are traditionally quieter across much of the European and American art world. By autumn, collectors have returned, galleries have begun their new exhibition programmes and institutions are opening major shows. There is then a window of intense activity before the end of year slowdown. Auction houses want their most significant works to come to market when the greatest number of potential buyers are paying attention. And over time, those periods become self-reinforcing.

Imagine you are consigning an important painting. You could theoretically sell it at almost any point in the year. But if you are bringing a major work to auction, you want the strongest possible audience around it.

That means attracting serious collectors, advisers and institutions, generating international attention and creating competition between potential buyers. Concentrating major sales into established auction seasons helps create exactly those conditions.

Collectors know important works are coming to market, so they pay attention. Sellers know collectors are paying attention, so they are more willing to consign significant works. Better consignments then attract more buyers, and the cycle reinforces itself.

It is one reason the major auction weeks can feel so different from the rest of the year. They aren't simply a collection of unrelated sales taking place at roughly the same time. They represent moments when a significant amount of the market's supply, demand and attention converges.

This October offers a good example. Frieze begins with its invitation-only preview on Wednesday 14 October, the same day Sotheby’s holds its Modern British & Irish Evening Auction and Christie’s stages its 20th/21st Century Evening Sale.

The following day, Phillips and Sotheby’s hold their major contemporary evening sales, before Sotheby’s continues on 16 October with its Contemporary Day Auction and a dedicated David Hockney sale.

Within the space of just three days, collectors can move between Frieze, auction previews and some of the most significant sales of the London season.

London in October is only one part of a much wider cycle. Zoom out and the art world has an international calendar of its own.

Major art fairs including Art Basel and Frieze create focal points throughout the year, while events such as the Venice Biennale draw the international art world to a particular city and moment. Add the established auction seasons in New York, London, Paris and Hong Kong, and a recognisable annual rhythm begins to emerge.

For collectors and sellers, understanding that calendar can be useful. For a seller, timing means considering not only where and how to sell, but what else is coming to market around a work. For a buyer, these major market moments can bring an exceptional concentration of works and opportunities at the same time.

This October, the headlines may be dominated by a £20–30 million Mondrian or a rare Hockney painting of his dachshund Stanley. But those individual works sit within a much bigger moment for the London art market. And when the hammer falls, we’ll be following the results.