# The Collector's Year: Planning Around Fairs, Biennials and Sales

> Source: LLB Auction (https://www.llb-auction.com/insights/the-market-in-motion/the-collectors-calendar)
> Author: LLB Auction
> Published: July 1, 2026

---

The art fairs calendar is the quiet architecture of a collector's year. Fairs, biennials, gallery weekends and the major sale seasons do not fall randomly across the twelve months; they follow a rhythm that decides when the strongest works surface, when galleries hold their best material back, and when a city fills with the people who set prices. A collector who reads that rhythm arrives in the right place at the right moment. One who ignores it spends the year reacting. This guide sets out the full art fairs calendar for a collector planning at the level of 50,000 to 500,000 euros a year, links each city and event into a single annual plan, and explains how timing governs both what you can buy and what you should sell.

> **Key takeaways**
> - The global art market reached USD 59.6 billion in 2025, up 4% year on year, its first growth after two years of contraction (Art Basel and UBS Global Art Market Report 2026).
> - Public auction sales rose 9% to USD 20.7 billion in 2025, concentrating the trophy lots in New York's May and November evening sales.
> - The 2026 anchor dates are fixed: TEFAF Maastricht 14-19 March, Art Basel Hong Kong 27-29 March, Art Basel in Basel 18-21 June, Frieze London 14-18 October, Art Basel Paris 23-25 October, Art Basel Miami Beach 4-6 December.
> - The 61st Venice Biennale, "In Minor Keys", runs 9 May to 22 November 2026, the season's single longest fixture.
> - Sale consignments track the fair calendar: the autumn London and Paris cluster in October feeds directly into the November New York sales.

## How the Art Fairs Calendar Frames a Collector's Year

The art fairs calendar is best read as four movements rather than twelve months. The first quarter opens quietly and builds toward March, when TEFAF Maastricht and Art Basel Hong Kong land within a fortnight of each other. The second quarter is dominated by the May auction marathon in New York and by Art Basel in Basel in June, the anchor of the entire year. Summer is fallow. Then the autumn season detonates: London in mid October, Paris a week later, and the November New York sales, before Miami closes the year in December.

The Art Basel and UBS Global Art Market Report 2026, authored by cultural economist Dr. Clare McAndrew of Arts Economics, records that global sales reached USD 59.6 billion in 2025, a rise of 4% and the first expansion after two consecutive years of decline. Dr. McAndrew notes that "the market welcomed a shift in direction in 2025, from the contraction of previous years to modest growth." Confidence carried into the new year: 43% of dealers expected sales to improve, up 10 percentage points, and a further 38% anticipated stable performance. A rising market makes the calendar denser, because more sellers time their release to the set-piece moments.

The single most quotable object a collector can carry is a compact map of the year. The table below fixes the 2026 art fairs calendar around its confirmed anchor dates.

| Month | Event | City | 2026 dates | Type |
| :- | :- | :- | :- | :- |
| February | Art Basel Qatar | Doha | 5-7 Feb | Fair |
| March | TEFAF Maastricht | Maastricht | 14-19 Mar | Fair |
| March | Art Basel Hong Kong | Hong Kong | 27-29 Mar | Fair |
| April | Art Brussels | Brussels | 23-26 Apr | Fair |
| May | Gallery Weekend Berlin | Berlin | 1-3 May | Gallery weekend |
| May | Venice Biennale opens | Venice | 9 May (to 22 Nov) | Biennial |
| May | Frieze New York | New York | 13-17 May | Fair |
| June | Art Basel in Basel | Basel | 18-21 Jun | Fair |
| September | Brussels Gallery Weekend | Brussels | 10-13 Sep | Gallery weekend |
| October | Frieze London and Masters | London | 14-18 Oct | Fair |
| October | Art Basel Paris | Paris | 23-25 Oct | Fair |
| December | Art Basel Miami Beach | Miami Beach | 4-6 Dec | Fair |

Read down the column and the shape of the year is obvious. Two dense clusters, March and October, bracket a quiet summer and a slow start. A collector who blocks those two windows first, then fills in the biennial and the sale seasons around them, has the skeleton of a workable plan. Everything that follows in this art fairs calendar is detail hung on that frame.

## A Month-by-Month View of the 2026 Art Fairs Calendar

Reading the year as a table gives the structure; reading it month by month gives the texture. Walking through the 2026 art fairs calendar in sequence shows where the pressure points sit and where the breathing room is.

January and February are the year's slow ascent. The Winter Show in New York and ART SG in Singapore open the diary in late January, and February scatters events across three continents: Art Basel Qatar debuts in Doha on 5-7 February, 1-54 Marrakech runs at La Mamounia on 5-8 February, and the Investec Cape Town Art Fair follows on 20-22 February. For most European collectors these are watch-list dates rather than travel dates, and the weeks are better spent confirming spring consignments and studying the year ahead.

March is the first crescendo. TEFAF Maastricht opens on 14-19 March, preceded by its Art Business Conference on 13 March and joined mid-run by the TEFAF Summit on 16 March, with 277 exhibitors across 24 countries setting the year's benchmark for vetting rigour. Barely a week later, Art Basel Hong Kong runs on 27-29 March, with preview days on 25-26 March. The distance between the two makes March an either-or decision for most, and choosing between them is the first real test of a collector's priorities for the year.

April is a lull with one significant fixture, Art Brussels on 23-26 April, a dependable venue for European mid-market discoveries away from the mega-fair crush. May is the pivot of the whole year. Gallery Weekend Berlin opens the month on 1-3 May; the 61st Venice Biennale begins its long run on 9 May after pre-opening days on 6-8 May; Frieze New York follows on 13-17 May; and behind the fairs, the New York May auction marathon moves the year's heaviest volume of significant work. June then belongs to Basel, with Art Basel in Basel on 18-21 June and its VIP preview on 16-17 June drawing the largest concentration of serious buyers in the calendar.

July and August are deliberately empty, the fallow season when dealers have time to talk and consignment decisions for the autumn get made. September reopens the diary, led by Brussels Gallery Weekend on 10-13 September, before October detonates: Frieze London and Frieze Masters on 14-18 October, Art Basel Paris at the Grand Palais on 23-25 October, and the London and New York October sales stacked around them. November carries the momentum into the New York autumn sales and closes the Venice Biennale on 22 November, and December ends the year with Art Basel Miami Beach on 4-6 December, the pivot of a Miami Art Week that fills the city from 1-7 December. Read in sequence, the art fairs calendar is a year with two heartbeats, March and October, and a long diastole in between.

## Fairs, Biennials and Gallery Weekends: What Each Format Is For

The three formats that structure the year are not interchangeable, and treating them as one blurred stream of openings is the most common planning error. Each answers a different question, and understanding the distinction is the difference between a purposeful trip and an expensive one. For a fuller treatment, our companion piece on [the distinct roles of fairs, biennials and gallery weekends](/insights/the-market-in-motion/the-collectors-calendar/fairs-biennials-and-gallery-weekends-what-each-one-is-for) sits alongside this hub.

An **art fair** is a commercial event where galleries rent booths to sell work over a few days. TEFAF Maastricht 2026 gathers 277 exhibitors across 24 countries; Frieze London and Frieze Masters together present almost 300 galleries from 48 countries. Fairs are where transactions happen, where a collector sees breadth in a compressed window, and where the calendar's commercial weight sits. A **biennial** is a large, non-commercial survey exhibition mounted every two years, curated around a theme rather than a price list. The 61st Venice Biennale, titled "In Minor Keys" and curated by Koyo Kouoh, presents 100 national participations from 9 May to 22 November 2026. Nothing at a biennial is for sale on site, yet biennials shape demand, because the artists selected for a national pavilion often see their market strengthen afterward.

A **gallery weekend** is a coordinated citywide moment when a network of galleries opens exhibitions on the same days to concentrate collector and curator attention. Gallery Weekend Berlin gathers around 50 galleries across the city each spring; the 2026 edition runs 1-3 May. Where a fair brings galleries to one hall, a gallery weekend sends collectors out across a city, rewarding those who prefer seeing work in a dealer's own space at primary-market prices rather than in a booth.

| Format | Commercial? | Frequency | What it is for |
| :- | :- | :- | :- |
| Art fair | Yes | Annual | Buying breadth in a compressed window |
| Biennial | No, survey only | Every two years | Reading curatorial direction and future demand |
| Gallery weekend | Yes, primary market | Annual | Seeing work in dealers' own spaces, building relationships |

The practical lesson is to match format to intent. Go to fairs to buy, to biennials to learn where taste is moving, and to gallery weekends to deepen the dealer relationships that decide who gets offered the best work first.

## The Major Sale Seasons and How They Anchor the Year

Underneath the fairs runs a second, older clock: the auction seasons. These are the moments when the largest volume of significant work clears the market, and they are remarkably fixed. Sotheby's runs its flagship contemporary art auctions in New York each May and November, in London each June and October, and in Hong Kong each April and October. Christie's and Phillips follow a near-identical rhythm, so the seasons stack rather than compete.

The May season in New York is the year's marathon. Public auction sales rose 9% to USD 20.7 billion in 2025, and the trophy lots concentrate in the New York evening sales, where works above USD 10 million saw auction sales climb 30% year on year. October in London has become the autumn's kickstarter after the summer break, feeding momentum into November New York. A collector reading the art fairs calendar for buying opportunities should overlay these sale weeks, because they determine when the deepest supply appears.

Within each season the structure repeats. **Evening sales** carry the curated, high-value lots and set the headline results; **day sales** run alongside them with deeper, broader material at accessible levels, and it is in the day sales that a collector working at 50,000 to 500,000 euros is most likely to buy. The two are choreographed as a single event, and reading the calendar means knowing that the evening sale sets the tone while the day sale sets the opportunity. A collector who only watches the evening headlines misses where most transactable work actually moves.

The sale seasons also matter to sellers, and this is where the calendar becomes a tool rather than a spectator's diary. Consigning a work is a scheduling decision. A piece entered for a November New York evening sale must usually be committed by late summer, months before the hammer falls, so the seller's real deadline sits in the quiet season when nothing visible is happening. Reading the sale calendar backward from the auction date to the consignment deadline is the single most valuable habit a seller can build. The timed online format that houses such as LLB Auction run compresses this further: a 7 to 14 day online auction still needs the work catalogued, condition-reported and photographed weeks ahead, so the discipline of planning against the calendar applies just as firmly online as in the saleroom.



![Collectors reviewing works during a fair preview day ahead of the public opening](https://renderings.laboetie.io/media/YmBJmDoULjmJO8lvUkgXG/w1920)



## Reading the Art Fairs Calendar for What Actually Matters

A calendar with fifty entries is noise until you know how to read it. The skill is triage: separating the three or four dates that will actually shape your year from the forty that will not. The following method turns a wall of listings into a plan.

1. **Anchor on the immovable set pieces.** Art Basel in Basel, 18-21 June 2026, is the fixed point the rest of the year orbits. Block it before anything else, then add TEFAF Maastricht in March and the autumn London-Paris pair in October.
2. **Distinguish buying dates from learning dates.** Fairs and sales are buying dates; the Venice Biennale and gallery weekends are learning dates. Do not spend a buying budget's worth of travel on a learning date, or vice versa.
3. **Follow the material, not the marketing.** A fair's press release lists everything; your interest lists a handful of artists and galleries. Confirm which of your target galleries are exhibiting before committing, using the official programme rather than secondary coverage.
4. **Overlay the sale weeks.** Mark the May and November New York sales and the June and October London sales on the same grid as the fairs. Supply peaks there.
5. **Read the biennial as a two-year signal.** A pavilion selection at the 61st Venice Biennale is a forward indicator of demand; note the names, then watch how they appear in the following year's fair booths.
6. **Protect the quiet season.** July, August and the January opening are when consignment decisions get made and dealers have time to talk. Treat the silence as working time, not dead time.

Applied consistently, this triage collapses an overwhelming art fairs calendar into perhaps six committed trips and a handful of watch-list dates. Collectors who work the calendar this way report that the discipline, not the spend, is what separates a coherent collection from an accumulation. Whether a work appears in a booth in Basel or an evening sale in New York, the underlying question is the same: does it belong in the collection you are actually building?

## Building an Efficient Collector Itinerary

Once the year's anchor dates are fixed, the work becomes logistics. The clustering that makes the calendar dense also makes it efficient, because the events that matter most sit within days of one another. Frieze London and Frieze Masters open 14 October 2026 and Art Basel Paris opens 23 October, nine days apart, which turns two trips into one two-city loop through the strongest fortnight of the European autumn.

A disciplined three-day itinerary during a fair week has a recognisable shape. Day one is the preview, where committed buying happens before the public opens and the best works are still available; Art Basel in Basel holds VIP preview days on 16-17 June 2026 ahead of the 18 June public opening. Day two is for depth: revisiting the two or three booths that held real interest, requesting condition reports, and seeing museum and biennial shows in the same city. Day three is for relationships, the coffees and studio visits that decide future access. Our dedicated guide to [building a three-day collector itinerary](/insights/the-market-in-motion/the-collectors-calendar/building-a-three-day-collector-itinerary) develops this into an hour-by-hour plan.

Travel planning follows the same logic of clustering. The March fortnight pairs TEFAF Maastricht, 14-19 March, with Art Basel Hong Kong, 27-29 March, but the distance makes these an either-or for most collectors rather than a loop. Booking accommodation for the October European cluster three to four months ahead is not caution but necessity, because a single city absorbs tens of thousands of visitors in a fair week. The collector who treats the art fairs calendar as a travel problem to be solved in advance, rather than a series of last-minute decisions, spends less and sees more.

Access is the other half of logistics, and it is earned before the fair, not at the door. VIP preview access, where the committed buying happens, is granted by galleries and fairs to established relationships, so the collector who wants to buy at Basel in June should have been in dialogue with those galleries since the spring. Registering interest in specific works ahead of a fair, and requesting the three-page condition report before travelling rather than in the aisle, converts a crowded preview into a series of confirmed appointments. The best-planned fair week looks calm from the outside precisely because the decisions were staged in the weeks before. This is the quiet advantage the calendar hands to collectors who read it early: time to prepare, while the unprepared are still deciding whether to go.

## How Timing Affects What Appears at Sale

The most useful thing the calendar reveals is not where to go but why certain works surface when they do. Supply is not constant. It pulses in time with the sale seasons and the fairs, and understanding the pulse tells a collector when patience pays and when it does not.

Consider a straightforward worked example. A collector wants a specific edition by a blue-chip contemporary artist. In the quiet of July, comparable examples are scarce and asking prices are firm. By late September, as consignments are gathered for the October London and November New York sales, three or four examples enter the market within weeks of each other, and the concentration of supply softens prices for a patient buyer. The lesson is that the same work carries a different price depending on where in the art fairs calendar you meet it. Reading the calendar is, in part, reading the supply curve.

For sellers the logic runs in reverse. LLB Auction's Contemporary Art Spring 2026 sale, held on 26 May 2026, offered 25 lots and sold 23, for roughly 39,480 euros in gross hammer across the sale. A consignment placed for that timed online auction had to be committed, catalogued and condition-reported weeks earlier, in the quiet spring window before the summer lull. A seller who understood the calendar prepared in March for a May result; one who waited until the autumn rush competed for attention against the entire October cluster. Timing the release of a work to a moment of thin competing supply, rather than to the crowded set pieces, is often where realised value is won or lost.

A second worked example shows the buyer's side of the same mechanism. Suppose a collector is patient and disciplined about a target artist. Rather than chasing the one example that appears in a June fair booth at a firm asking price, they mark the autumn cluster on the art fairs calendar and wait. Through October and into the November New York sales, competing consignments accumulate, day sales carry two or three comparable works, and the collector bids into a moment of ample supply instead of scarcity. The saving is not luck; it is the calendar doing its work. The corollary matters just as much: for genuinely rare material, supply does not obey the calendar, and the disciplined move is to act when the work appears rather than wait for a season that may never bring another.

The practical framework a collector can carry from this is short. First, decide whether the target is common enough to time or rare enough to seize. Second, for timeable work, buy into the seasons of heavy supply, October and the New York sales, not the thin summer. Third, for a sale, prepare in the quiet months and release into a window of light competing supply. Fourth, read every pavilion selection at the biennial as a two-year demand signal. Each of these is a direct reading of the art fairs calendar rather than a reaction to a single event.

This is also why the biennial matters commercially even though nothing sells on its walls. When an artist is chosen for a national pavilion at the Venice Biennale, demand for their work tends to firm over the following two sale seasons, a pattern collectors track deliberately. The calendar, read closely, is a forward-looking instrument, and the collectors who use it best treat every date on it as information about supply, price and access rather than simply an invitation to attend.



![A seasonal circuit of art capitals, from the March fairs to the December Miami close](https://renderings.laboetie.io/media/J2HwJ5EXLipKg4u7JRvOS/w1920)



## The Main Art Capitals by Season

The year is not only a sequence of dates but a circuit of cities, each with its own moment. Knowing which capital owns which season lets a collector plan geographically as well as chronologically.

**Maastricht in March** belongs to the connoisseur. TEFAF Maastricht, 14-19 March 2026, is the calendar's benchmark for rigour, with a vetting process that has made it the reference fair for quality across categories. **Hong Kong in late March** is the Asian market's set piece; Art Basel Hong Kong, 27-29 March, is the region's anchor and the gateway for collectors reading Asian demand, explored in our guide to [Hong Kong in March, the Asian market's set piece](/insights/the-market-in-motion/the-collectors-calendar/hong-kong-in-march-the-asian-market-s-set-piece).

**Basel in June** is the centre of gravity. Art Basel in Basel, 18-21 June 2026, is where the largest concentration of significant contemporary work and serious buyers meets, which is why our analysis of [how Art Basel anchors the fair calendar](/insights/the-market-in-motion/the-collectors-calendar/art-basel-reading-the-anchor-of-the-fair-calendar) treats it as the year's fixed point. **Venice from May to November** is the long survey, not a market but a barometer, examined in our [collector's guide to the Venice Biennale](/insights/the-market-in-motion/the-collectors-calendar/the-venice-biennale-a-collector-s-guide-to-the-big-survey).

**London and Paris in October** share the autumn. Frieze London, 14-18 October 2026, opens the season, and collectors who want to work it well should read our guide to [how to work the London fair season during Frieze Week](/insights/the-market-in-motion/the-collectors-calendar/frieze-week-how-to-work-the-london-fair-season). Art Basel Paris follows at the Grand Palais, 23-25 October, cementing Paris as the autumn's second capital. **New York** owns the sale seasons in May and November, and **Miami** closes the year in December, when Art Basel Miami Beach, 4-6 December, turns the calendar's final week into the Americas' largest gathering. A collector who maps these capitals onto the seasons has a geography to match the art fairs calendar's chronology.

## FAQ: The Collector's Calendar and Sale Seasons

### When does the 2026 art season actually begin?

The commercial year opens slowly in January and reaches its first peak in March, when TEFAF Maastricht, 14-19 March 2026, and Art Basel Hong Kong, 27-29 March, land within a fortnight. Most collectors treat March as the true start of the buying year, with January reserved for planning and consignment conversations rather than acquisitions.

### How do I read an art fairs calendar without missing key sales?

Overlay the auction weeks onto the fair dates on a single grid. Fairs cluster in March and October, while the major contemporary sale seasons fall in New York each May and November and in London each June and October. Reading both layers together, rather than the fairs alone, prevents the common mistake of planning around booths while the deepest supply moves through the salerooms.

### What is the difference between a fair and a biennial?

An art fair is a commercial event where galleries sell work from booths over a few days, such as Art Basel in Basel. A biennial is a large curated survey exhibition held every two years, such as the Venice Biennale, where nothing is for sale on site. Fairs are for buying; biennials are for reading where taste and demand are heading.

### When should I consign a work if I want to sell?

Work backward from the sale date. A piece intended for a November New York evening sale generally must be committed by late summer, and a spring timed online auction requires consignment weeks before it opens. The practical deadline sits in the quiet season, months before the visible event, which is why sellers who plan around the calendar prepare well ahead of the rush.

### Is Art Basel in Basel more important than the Paris and Miami editions?

Art Basel in Basel, 18-21 June 2026, remains the anchor of the fair year by the concentration of significant work and senior collectors it draws. The Paris edition in October and Miami Beach in December are major set pieces in their own right, but Basel is the fixed point around which most collectors build their annual plan.

### How far ahead should I plan travel around the art fairs calendar?

Block the immovable anchor dates as soon as they are confirmed, then book accommodation for the dense October European cluster three to four months ahead, because a single city absorbs tens of thousands of visitors during a fair week. The March and June fixtures reward the same early discipline.

## How LLB Auction Approaches the Collector's Calendar

LLB Auction is an independent online house built for collectors who want to buy and sell contemporary art on the calendar's terms, without gallery markup and without the theatre. The house runs four timed online auctions a year on its own platform, thematic or seasonal, each running 7 to 14 days and fully asynchronous, with sales also listed on Artsy. Three disciplines define how the house serves the year.

**Curation by rejection.** LLB declines roughly 40% of the works submitted for sale, on the principle that a collector can say yes with confidence only when the house has been willing to say no. The curation is the product; the rejection discipline is what a collector is really buying.

**Documented due diligence.** Every lot carries per-lot verification of certificates, ownership history and conservation records, and a published three-page condition report. The house documents evidence and lets the condition report stand as the record, rather than making claims of certainty it cannot support.

**Transparent, seasonal timing.** Fees are disclosed upfront, a 20% buyer's premium and a 10% seller's commission with no hidden costs, and the sale calendar is set in advance so consignors can plan their release around the wider art fairs calendar rather than against it.

If you want the year's anchor dates, consignment deadlines and sale previews organised into a single plan, subscribe to the Collector's Calendar newsletter. It is the simplest way to read the art fairs calendar with LLB Auction's own scheduling built in, and to know when to be in the room.

## Conclusion

A year in contemporary art only looks chaotic from the outside. Read closely, the art fairs calendar is a legible structure: two dense clusters in March and October, an anchor in Basel in June, a long biennial survey in Venice, and a set of sale seasons that pulse supply through the salerooms on a fixed schedule. The collector who internalises that structure stops reacting to individual announcements and starts planning a coherent year, arriving where the material is, consigning when competition is thin, and reading the biennials for where demand will move next. Master the art fairs calendar and you master the single most useful planning tool a serious collector or seller has.

**À lire également :**

- [Fairs, Biennials and Gallery Weekends: What Each One Is For](/insights/the-market-in-motion/the-collectors-calendar/fairs-biennials-and-gallery-weekends-what-each-one-is-for)
- [Art Basel: Reading the Anchor of the Fair Calendar](/insights/the-market-in-motion/the-collectors-calendar/art-basel-reading-the-anchor-of-the-fair-calendar)
- [The Venice Biennale: a Collector's Guide to the Big Survey](/insights/the-market-in-motion/the-collectors-calendar/the-venice-biennale-a-collector-s-guide-to-the-big-survey)
- [Frieze Week: How to Work the London Fair Season](/insights/the-market-in-motion/the-collectors-calendar/frieze-week-how-to-work-the-london-fair-season)
- [Hong Kong in March: the Asian Market's Set Piece](/insights/the-market-in-motion/the-collectors-calendar/hong-kong-in-march-the-asian-market-s-set-piece)
- [Paris as an Art Capital: Reading the City's Collecting Season](/insights/the-market-in-motion/the-collectors-calendar/paris-as-an-art-capital-reading-the-city-s-collecting-season)

**Sources :**

- [The Art Basel and UBS Global Art Market Report 2026](https://theartmarket.artbasel.com/) : Art Basel and UBS, Arts Economics, 2026
- [Biennale Arte 2026: In Minor Keys](https://www.labiennale.org/en/art/2026) : La Biennale di Venezia, 2026
- [TEFAF Maastricht 2026](https://www.tefaf.com/fairs/tefaf-maastricht) : TEFAF, 2026
- [Frieze London and Frieze Masters 2026](https://www.frieze.com/fairs/frieze-london-frieze-masters) : Frieze, 2026
- [Art Basel in Basel 2026](https://www.artbasel.com/basel) : Art Basel, 2026
- [The new auction calendar: everything, everywhere, at every opportunity](https://www.theartnewspaper.com/2024/10/07/the-new-auction-calendar-everything-everywhere-at-every-opportunity) : The Art Newspaper, 2024
- [Calendar: Every Major Art Fair Taking Place in 2026](https://www.artnews.com/list/art-news/market/art-fair-calendar-1234654135/) : ARTnews, 2026
- [Upcoming Auctions Calendar](https://www.sothebys.com/en/calendar) : Sotheby's, 2026
- [Gallery Weekend Berlin 2026](https://www.gallery-weekend-berlin.de/) : Gallery Weekend Berlin, 2026
- [2026 Art Fairs: The Collector's Atlas](https://whitewall.art/art/the-collectors-atlas-essential-2026-art-fairs/) : Whitewall, 2026
- [The Art Basel and UBS Global Art Market Report 2026](https://www.ubs.com/global/en/our-firm/art/art-market-research.html) : UBS, 2026
