Nobody uses Arthur the same way. Some of you live in auction results. Some of you only care about what's opening this week and which galleries are showing at the next fair. Until now you all got the same left-hand ribbon.That's fixed. You can now customize the sidebar: hide the tabs you never touch, and move the ones you use to the top. Go to Manage Account → Preferences → Sidebar, tap the eye to hide a tab, use the arrows to reorder.While you're in Preferences, six things are yours to set:<ul><li>Email Notifications — pick exactly what we send and how often. If you want less from us, this is where you say so.</li><li>Artwork Preferences — the artists, mediums, and price ranges you actually collect, so what surfaces is relevant.</li><li>Lots in Perpetuity — follow a lot forever. Every time it comes back around, you hear about it.</li><li>Labels — your own filing system for sales, auctions, and events, and shareable with other users.</li><li>Calendar — choose which auctions, fairs, and openings show up in your calendar.</li><li>Sidebar — the new one. Your navigation, your order.</li></ul>Two minutes of setup makes the whole product feel like it was built for you, because at that point it was.

Arthur introduces customizable sidebar navigation and highlights user-controlled preference settings.

You can now build your own Arthur

Add up every final price an artist has ever made at auction, the hammer plus premium — what the buyer actually paid, and you get a number nobody in this market talks about enough. Call it the artist's market cap.It's in Arthur now. Analytics → Artist Auction Sales. Cumulative total sales, all time, ranked.The top of the list will not shock you. Pablo Picasso at $12.5 billion. Andy Warhol at $7.8 billion. Claude Monet, Jean-Michel Basquiat, Gerhard Richter. You probably guessed all of them.It gets interesting when you cut it. Sort by period, by nationality, by medium.Ask who the biggest Ultra Contemporary, born after 1974, artist is by money spent. Or the biggest Korean artist. Or the biggest sculpture. Those lists are not obvious, and they are not the same list you'd get if you asked a dealer over dinner.We give you the last five years next to the all-time figure, so you can see how much of an artist actually comes to auction each year — and whether that number is accelerating or thinning out.The signal isn't the rank. It's the change in rank. An artist climbing twenty places in three years is being bought by more people, in more places, at higher prices. That happens before the museum show and before the critics catch up. A name sliding down is telling you something too, and earlier than anyone will say out loud.Worth saying out loud: this market is brutally top-heavy. A small handful of names account for an enormous share of everything ever spent at auction, and the curve falls off a cliff below them. That's uncomfortable, and it's also why moving up the list at all is such a big deal.One caveat. This is auction only — any artist with auction history. Private sales don't hit the ledger.Look at the top of the list once. Then spend your time twenty rows down.

Arthur introduces cumulative artist auction sales as a market-cap-like metric for tracking rank and momentum.

Picasso has sold $12.5 billion at auction. That's the boring part.

Auction results are the easy part. The private sales that actually set an artist's market happen in back rooms, and nobody publishes them.Some of them are now in Arthur. Open an artist. Artist Analytics → Price By Year Created. Private sale history sits alongside the auction record: what sold, when it was made, what it brought.Set your expectations honestly. We do not have every private sale, and nobody ever will. What we have is licensed or crowdsourced, and it is a small percentage of what actually trades. It is also more than you will find anywhere else.And it is growing. We have licensed and acquired several databases this year. Tens of thousands more historical sales land over the coming weeks.Two more things.Online sales now sit inside Gallery Sales. One number, one screen, instead of two versions of the same question. If you want them apart, filter within Gallery Sales.Galleries and dealers, you can list here. Send your show or your inventory, attachments or links, to <a href="mailto:arthur@arthuranalytics.com">shows@arthuranalytics.com</a>. We add it to the artist's and gallery’s sale page and notify everyone following that artist or dealer.Auction is the part of the market that gets published. This is the first look at the part that does not.

Arthur adds private sale history to artist analytics and lets galleries submit inventory for follower visibility.

The sales nobody publishes are now on the artist page

The hard question in this market isn't what a work is worth. It's whether someone will buy it when you decide to sell.Repeat sales answer that. A repeat sale is the same work crossing the block more than once: not an estimate, not a comparable. Proof that a market for that artist exists, and keeps showing up.Filter Arthur to Post War, born between 1911 and 1945, and sort by repeat sales. The deepest markets in the period, with the annual price growth of those works alongside:<ul><li>Andy Warhol — 941 repeat sales, 6.1% a year</li><li>Sam Francis — 387, 4.1%</li><li>Yayoi Kusama — 381, 18.1%</li><li>Gerhard Richter — 318, 9.0%</li><li>Zao Wou Ki — 283, 12.5%</li><li>Bernard Buffet — 265, 4.7%</li><li>Tom Wesselmann — 234, 5.0%</li></ul>Warhol's market is more than twice as deep as anyone else's here. It also grows at 6.1% a year. Kusama has 560 fewer repeat sales and compounds at three times the rate.That is the whole lesson. Depth and appreciation are two different questions, and the artist who leads on one rarely leads on the other. Buffet is easy to sell and slow to grow. Kusama grows fast in a thinner market. Zao Wou Ki sits closest to both: 283 sales at 12.5%.Which one you want depends on whether you are building a position or planning an exit. Most people only think about the second one when it is already too late.A record tells you what one buyer paid once. Repeat sales tell you what the market keeps paying.

Arthur uses Post War repeat sales to compare market depth with annual price growth.

941 Warhols have sold more than once

You are on an artist page and two questions come up fast. How many works did they actually make? And how much of it sits in museums? Those are now filters.Tap the search bar, then Filter. Three new criteria sit alongside everything you already sort by: estimated known works, known museum works, and nationality. Want French painters with fewer than 300 known works and at least ten in museums? That is one search now.Three more things went live this week.<ul><li>Every message in one place. ArtExchange messages now land in the same inbox as everything else. Buyers, sellers, other users. All of it under the DM icon in the upper-right corner of the app and the website.</li><li>A countdown on every event. Open any fair or exhibition and the upper-left corner tells you how many days until it opens, or how many are left before it closes. No more guessing whether you have missed it.</li><li>Openings this week, near you. Allow Arthur to see your location and we build you a tile of exhibitions opening in your city this week. It updates on its own. You do not have to ask.</li></ul>Scarcity has always been a fact about an artist. Now it is a filter.

Arthur adds artist filters for scarcity, museum holdings, and nationality, plus inbox, countdown, and local opening updates.

Filter artists by estimated known works, museum ownership, and nationality

Contemporary sales, artists born 1946–1974, have looked steady on the surface this year. Underneath, the estimates have been badly wrong, and the misses cluster around artists the market stopped paying close attention to.Here are the year-to-date top five surprises at Sotheby's, Christie's and Phillips: contemporary painters and sculptors, sorted by percent over estimate.<ul><li>Deborah Butterfield, Untitled — $409,600, over 10x estimate (Sotheby's, May 15). Her found-metal horses cast in bronze have been institutional for decades. Specialists still price her like a regional sculptor.</li><li>Donald Baechler, The Butterfly Flower #3 — $179,200, 924% (Sotheby's, Jul 14). He died in 2022, and estates reprice. East Village 1980s is also having a moment.</li><li>Peter Marino, Pair of Cabinets — $114,300, 814% (Christie's, Mar 5). The architect behind the Chanel and Dior flagships, selling as a designer. Taste crossover is something estimates never model well.</li><li>Dubossarsky & Vinogradov, Really Sexy — $60,960, 771% (Christie's, Feb 27). Post-Soviet painting has almost no recent comps, so estimates default low.</li><li>Frank Moore, Wild Blue Yonder — $107,950, 764% (Christie's, Feb 27). AIDS-era allegorical painter, died 2002. Museum attention has been building for years and the auction market hadn't caught up.</li></ul>The pattern is the same in every case: thin comp history plus a shift in critical attention. That's exactly where estimates break, and where a bid gets rewarded.Run it yourself: change one filter and the list changes completely.Analytics → Top Surprises at Auction → filter to Contemporary → select Sotheby's, Christie's and Phillips → Painting and Sculpture → sort by percent surprise.

Arthur highlights five Contemporary auction sales that dramatically exceeded estimates in 2026.

Nobody saw the horse coming

Frieze Seoul runs September 2–6, and we already have nearly every preview from the fair in the app.You know what fair week looks like if you're on gallery lists. Forty emails in five days, each one a different PDF, all landing while you're trying to figure out where to spend Tuesday morning. And if you're not flying to Seoul, they just pile up unopened.Our users forward those previews to us. We put them all in one place, before the fair opens.What you can do with it:<ul><li>Look by gallery — see exactly what each booth is bringing</li><li>Look by artist — find the work you're following, wherever it's hanging</li><li>Compare fairs — see what a gallery brought to Seoul this year against what they brought to past fairs. Whether they're going bigger, going younger, or repeating themselves.</li></ul>That last one doesn't exist anywhere else. A gallery's inventory across fairs isn't sitting in anyone's inbox; it only exists if someone keeps the record.Previews are under Art Fair Previews. The gallery comparison is under Gallery Analytics.Worth ten minutes before the fair opens, whether or not you're getting on the plane.

Arthur highlights Frieze Seoul previews and tools for browsing fair booths by gallery, artist, and past fair activity.

Frieze Seoul without the flight

Analytics, Ultra Contemporary period, born after 1974, painters and sculptors, sorted by museum shows. Here's the all-time top five.<ol><li>Ryan Gander — 246. British conceptualist, deliberately inconsistent: a mouse in a wall, a marble block, a line of text. A curator can build a whole room around him.</li><li>Alicja Kwade — 246. Berlin. Stone, mirrors, steel. The Met roof commission put her everywhere, and her work photographs like nothing else, which matters more than anyone admits.</li><li>Mircea Cantor — 224. Romanian, film and installation, Duchamp Prize in 2011. Large curatorial standing, quiet market.</li><li>Laure Prouvost — 218. Turner Prize at 35, then France's pavilion at Venice in 2019. Video and immersive installation, in a French-English slippage that's hers alone.</li><li>Rashid Johnson — 211. The outlier here. Black soap, wax, shea butter, live plants. The Guggenheim gave him the ramp in 2025, and he's the only artist on this list whose auction record keeps pace with his museum record.</li></ol>Why museum shows matter: it's the one signal in this market nobody can buy. Galleries place work. Collectors bid. Advisors talk. Curators choose on conviction, and they spend a scholarship budget, not a resale budget. Sustained museum activity is the closest thing the art world has to peer review, and it tends to lead durable auction demand rather than follow it.Four of these five sit nowhere near the top of a price index. That gap is the whole point.Find it yourself: Analytics → Ultra Contemporary → Painters & Sculptors → sort by Museum Exhibitions.

Arthur ranks Ultra Contemporary painters and sculptors by museum exhibitions to show where curatorial conviction is strongest.

The five Ultra Contemporary artists museums can't stop showing

Most art platforms decide what you see. Arthur lets you decide.Open the Customize Dashboard menu, the "..." in the upper right on web, or the Menu on mobile, and you'll find 20+ tiles you can add, remove, and drag into whatever order matches how you actually collect.A few worth turning on:<ul><li>Art Fair Previews — see what's coming to the fair before you're standing in front of it</li><li>Fantasy Auction — build your dream sale and see how you'd do</li><li>First Time Artist at Sotheby's, Christie's & Phillips — the moment an artist crosses into the majors</li><li>New High For Artist At Auction — records as they happen</li><li>Collectors & Museums Seeking Your Artists — demand signals on the artists you follow</li><li>Top Surprises at Auction and Top Unsold — the two lists that tell you where the market actually is</li></ul>If you only care about your followed artists and the auction results that touch them, strip it down to four tiles and put them at the top. If you want the full market view, turn everything on. Nobody's dashboard needs to look like mine.We're adding new tiles regularly, so it's worth checking the menu every few weeks: the list you saw at signup isn't the list today.Two minutes of setup and Arthur stops being a general art market app and starts being your art market app.

Arthur explains how users can customize their dashboard with tiles that match how they collect.

Your dashboard doesn't have to look like everyone else's

Some artists surface at auction a handful of times a generation. Others never really leave the salesroom. Rank the Old Masters, everyone born before 1821, by the sheer number of works that have crossed the block, and the same five names sit at the top. That ranking is telling you something real about where this market is deepest.Lot volume is simply how many individual works by an artist have come up at auction. It’s one of the cleanest signals of a healthy market, for two reasons:Demand — buyers keep showing up. Thousands of lots don’t clear over the years unless there’s a deep, renewing base of collectors on the other side. Volume is demand made visible.Liquidity — you can actually buy and sell. When works come to market this often, there’s steady supply, a long price record to value against, and a real buyer waiting when you decide to sell. Thin markets can look thrilling until it’s your turn to sell. Deep ones give you room.The five Old Masters, born before 1821, with the most lots ever sold at auction:<ol><li>Albrecht Dürer — 8,858 lotsThe greatest printmaker of the Northern Renaissance. His engravings and woodcuts, Melencolia I, Knight, Death and the Devil, were made in real numbers and still circulate five centuries later. He also more or less invented the artist as a brand; that AD monogram is the original logo.</li><li>David Teniers the Younger — 5,849 lotsThe defining Flemish genre painter of the 1600s: tavern scenes, village fairs, peasants at play. He was also court painter and keeper of the collection for Archduke Leopold Wilhelm, painting the famous gallery pictures that document one of history’s great cabinets. Prolific in his lifetime, everywhere at auction now.</li><li>Antoine-Louis Barye — 5,337 lotsThe father of the animalier movement, and the artist who made animal sculpture serious art. His Romantic bronzes, big cats, muscle, struggle, were cast in editions, which is exactly why so many are in circulation. The Louvre and the Walters both collect him deeply.</li><li>Rembrandt van Rijn — 4,866 lotsMost of that volume is etchings, and that’s the point: Rembrandt’s prints are among the most collected objects in all of Western art. His paintings define the Dutch Golden Age; his etchings put a piece of him within reach, which is why they keep changing hands.</li><li>Pierre-Jules Mène — 4,385 lotsThe most commercially successful animalier of them all: horses, hounds, the aristocratic sporting world in bronze. His foundry cast and sold widely across Europe, so his work sits in collections everywhere and surfaces at auction constantly.</li></ol>Notice the pattern: printmakers and sculptors dominate. Artists who worked in multiples, editions of etchings, casts of a bronze, put more objects into the world, and more objects mean a deeper, more liquid market. It’s not that Dürer is “bigger” than a painter of unique canvases; it’s that his market simply has more places to change hands.See the full ranking, and filter it your own way, in Arthur: Analytics → Lot Volume → filter by Old Masters.

Arthur ranks Old Masters by auction lot volume to show which markets are deepest and most liquid.

The Old Masters that never leave the salesroom

When an artist sets a new auction high, it's rarely just a number. It's often the first visible sign of a breakout: the market catching up to a name that's been building quietly.Three reasons a new high matters:<ul><li>It resets the benchmark. Every other work by that artist gets re-priced off the new peak.</li><li>It shows demand outrunning supply. A record set above estimate is conviction, not a one-off.</li><li>It's the reputation catching up to the price. The shows, the collectors, the critical weight were usually there first.</li></ul>These six Ultra Contemporary, born after 1974, American artists set new highs at Sotheby's, Christie's, and Phillips over the past year:<ul><li>Noah Davis — The Casting Call — $2,002,000 — Sotheby's, Nov 2025</li><li>Joseph Yaeger — There is a light and it always goes out — $477,300 — Phillips, May 2026</li><li>Calida Rawles — Little Swimmer — $193,500 — Phillips, Nov 2025</li><li>Hugo McCloud — Untitled — $77,400 — Phillips, Feb 2026</li><li>Sam Falls — Trains Across the Sea — $60,960 — Christie's, Jul 2026</li><li>Woody De Othello — At Night I Can't Sleep — $54,180 — Phillips, May 2026</li></ul>One caveat worth keeping: not every record is a breakout. A single trophy work with rare provenance can spike on its own. The signal is strongest when there's depth behind it: more than one work finding real demand.See all six for yourself: Analytics → Artists → New High at Auction. Filter by auction house, Ultra Contemporary, and nationality, United States, then sort by price.

Arthur highlights six Ultra Contemporary American artists who recently set new auction highs.

Six American artists just broke their records

Three things went live this month. Each one makes it easier to follow the artists and institutions you actually care about.All the art-world news, in one placeThe Home page is Headline News: the market-moving stories, the ones the art world views as most salient and relevant. It pulls from over 200 fine art publications, from the Financial Times, The New Yorker, and The New York Times down to Hyperallergic and Artforum, plus videos and podcasts. The same front page for every member.Want it narrowed to your world? The Your News tab is built only from the artists, galleries, and institutions you follow: nothing else in the way.We’ve also added our own reporting. Eileen Kinsella, who spent years breaking stories at Artnet News, now writes the Arthur beat: original editorials you won’t find anywhere else.Filter the auction database by artist nationalityYou can now filter auction results by an artist’s nationality. Say you want to see how Brazilian modernists or a generation of Korean painters are coming to auction: you can isolate a nationality and read the whole field at once. It’s a quick way to spot which national schools are gaining depth, and it gives you cleaner comparables when you’re weighing one artist against their peers.The Art Exchange now reaches the right peopleListings on the Art Exchange are free. And now, the moment you post a work to buy, sell, lend, or borrow, every member who follows that artist gets notified. Free, anonymous, and pointed straight at the collectors most likely to care: no fees, no middle layer, no broadcasting to people who’ll never bite.

Arthur announces Headline News and Your News feeds, nationality auction filters, and targeted Art Exchange alerts.

Three new reasons to open Arthur

Most "appreciation" numbers in the art market are a bit of a magic trick. They take two different paintings by the same artist, compare the prices, and call the gap growth.Repeat sales don't let you cheat like that. They track the exact same work selling twice at auction, so what you're looking at is the picture itself gaining value, and nothing else.We ranked artists by the median repeat-sales Price compound annual growth rate, CAGR, across their body of work at auction. Here are the five leading the field right now.<ol><li>Barkley L. Hendricks — 47.3%His full-length portraits of everyday Black Americans were overlooked for most of his career. Since his death in 2017, the market has caught up fast. One portrait sold for $48,000 at Swann, then returned to Sotheby's a decade later with an estimate north of $2 million: the same canvas, the same wall, a very different number.</li><li>Martin Wong — 38.7%The great chronicler of 1980s Lower East Side New York, largely unsung in his lifetime. A Bronx Museum retrospective and the work of his P·P·O·W-managed estate have brought a new generation of collectors to his brickwork cityscapes, and a fresh auction record fell in 2024.</li><li>Shara Hughes — 35.9%The one living mid-career name on the list. Her invented, slightly hallucinatory landscapes broke out at the 2017 Whitney Biennial, and with David Kordansky behind her, demand has outrun supply ever since.</li><li>Luo Zhongli — 35.7%His 1980 painting Father is one of the most recognized images in modern Chinese art. Decades on, his early realist canvases stay thin on the ground at auction, and each one that surfaces resets the bar.</li><li>Samia Halaby — 34.4%Now in her nineties, the Palestinian-American abstraction pioneer is finally being priced like one. A wave of museum attention and a landmark 2024 Christie's result have moved her market from overlooked to sought-after.</li></ol>What the list actually tells you: four of these five are elder or posthumous artists. This isn't a list of hot new names; it's the market repricing careers it undervalued for decades. The honest metric rewards the works that were quietly right all along.See the full ranking, and filter it by period or medium to find the leaders within Ultra-Contemporary or among a single medium: Analytics → Artists → Price CAGR

Arthur ranks artists by repeat-sales Price CAGR to show which exact works have appreciated fastest at auction

Same painting, sold twice: the 5 fastest-appreciating artists

We just added something new, and it's pure fun. Fantasy Auction lets you bid on real lots heading to the world's major sales, build a fantasy collection, and see how your eye stacks up against everyone else's once the hammer falls.You'll find it on the left-hand tab of your Home Page on the website, or under Menu → Fantasy Auction in the app.Here's how it works:<ul><li>You get a fixed budget.</li><li>“Buy” any upcoming lot at its low estimate.</li><li>After the sale, we tally the real results and rank every collection on the leaderboard.</li></ul>Pick the works you believe in. If a lot you bought sails past its estimate, your instinct paid off. If it stalls, better luck at the next sale.All you need is a handle. Pick one, place your bids, and you're in.See what your taste can do.

Arthur introduces Fantasy Auction, a game where users bid on real upcoming lots and compete on a leaderboard.

Introducing Fantasy Auction - Think you've got the eye? Prove it.

Repeat sales, the same physical work selling twice at auction, is one of the most honest signals in the market. It can't be staged. Either a picture comes back and finds a new buyer, or it doesn't. When it happens again and again for one artist, it tells you something rare for a young name: there's a real, tested market for the work, not just a primary-sale waiting list.Here are the five Ultra Contemporary artists, born after 1974, with the most repeat sales in Arthur right now, and, as a reference, how the same works have appreciated between sales, median CAGR:<ul><li>Aboudia — 45 repeat sales · 3.9%</li><li>Jonas Wood — 44 · −0.7%</li><li>Ayako Rokkaku — 37 · 35.4%</li><li>Shara Hughes — 27 · 35.4%</li><li>Hernan Bas — 27 · 2.5%</li></ul>Some context.Depth and appreciation are two different things, and this list separates them cleanly. Aboudia and Jonas Wood have the most-tested markets here; their works have come back to auction more than forty times each. That's unusual for artists barely into their forties. But depth doesn't guarantee a return: Wood's resale CAGR sits essentially flat, meaning the market is active but fully priced.Rokkaku and Hughes give you both: 35%+ annual appreciation on works that are already circulating heavily. An active market that's also still rewarding the people holding the work is the rarer, more interesting signal.The takeaway: repeat-sale volume tells you a market exists. The appreciation figure tells you whether it's paying. Read them together; one without the other only gives you half the picture.Pull it yourself: Analytics → Artists → Repeat Sales, then Filter → Period → Ultra Contemporary.

Arthur ranks Ultra Contemporary artists by repeat auction sales and median appreciation to show market depth and returns.

The same work sold twice — who it happens to most under 50

Most rankings measure money. This one measures competition.The Baer Faxt tracks who is actually bidding at Sotheby’s, Christie’s, and Phillips, not just who wins. So we ranked Ultra Contemporary artists, born after 1974, by the number that’s hardest to fake: the total cumulative bidders that turn up to compete for their work. More bidders means more people in the room who want the same thing. That’s demand you can feel.The Ultra Contemporary artists drawing the deepest bidding right now:<ul><li>Tauba Auerbach — 14 bidders</li><li>Jonas Wood — 13</li><li>Adrian Ghenie — 13</li><li>Lynette Yiadom-Boakye — 13</li><li>Tim Noble & Sue Webster — 12</li></ul>Why these names? Each makes work that’s instantly theirs: Auerbach’s optical, almost mathematical abstractions; Wood’s saturated interiors and still lifes; Ghenie’s dark, thickly worked history paintings; Yiadom-Boakye’s imagined portraits, now carried by a Tate retrospective; Noble & Webster’s shadow sculptures that turn piles of junk into silhouettes. A distinctive hand plus museum validation is what pulls a crowd to the paddle.A high hammer price can come from two determined bidders. A high bidder count means the whole room wants in, a truer read on where taste is actually heading.See the full ranking on Arthur: Analytics → Artists → Most Active Artists, then filter by Period: Ultra Contemporary, born after 1974.— JamesP.S. Watch the underbidders too. The people who just miss these lots are the ones who set the floor for the next sale.

Arthur ranks Ultra Contemporary artists by total cumulative bidders to show where collector competition is strongest.

The names collectors are fighting over

When an artist changes galleries, everyone asks what happens to prices. Wrong number. The first thing that moves is curatorial standing. And now you can watch it happen — we update Gallery Switch every day as new representation changes are announced.Here’s what makes it different. The Gallery Rank behind every move comes from Artfacts, our exhibition-data partner. It’s built entirely on curatorial merit. No price data goes into it. Four things decide it:<ul><li>Discover — the top artists a gallery showed in their first year.</li><li>Represent — the trending artists it has backed over a sustained period.</li><li>Fairs — its footprint at the international art fairs.</li><li>Programme — the strength of its exhibitions and the standing of its roster.</li></ul>Two moves from this week show what that looks like: Jordan Kerwick left SmithDavidson Gallery for König Galerie. His Gallery Rank went from 649 to 18. Leonardo Drew joined Hauser &amp; Wirth from Goodman Gallery — a jump from 21 to 4.No auction result did that. The people who shape taste — curators, fair participation, the galleries that back artists early — moved these two the moment representation changed. The sales usually follow. You don’t have to wait for them.See who moved this week in Arthur: Analytics → Artists → Gallery Switch. Or check Notifications.— JamesP.S. Gallery Rank uses zero price data. When it jumps, it’s pure conviction from the people who decide what matters — and Kerwick climbing 631 places is about as loud as that signal gets.

When an artist changes galleries, their curatorial rank moves first — often before the market notices. Two moves from this week.

The number that moves before the price

Here&#8217;s a number that shouldn&#8217;t be possible. A portrait sold for $48,000 in 2010. A decade later, the same painting came back to auction carrying a $2&#8211;3 million estimate. Not a similar work. Not another piece by the same hand. The same canvas.Most price charts can&#8217;t show you that, and it&#8217;s worth understanding why. When you average an artist&#8217;s auction results, you&#8217;re blending a major painting sold one year with a minor study sold the next. The average moves, but it can&#8217;t tell you whether the work got more valuable or whether a better painting simply came up for sale. It flatters the artist and tells you almost nothing.Repeat sales fix that. You take one object and look at what it fetched the first time against what it fetched the second. One painting, repriced, with nowhere to hide. It&#8217;s the cleanest read there is on what a name is actually worth &#8212; and the number that&#8217;s hardest to argue with.So I sorted Arthur&#8217;s Post War painters &#8212; artists born between 1911 and 1945 &#8212; by repeat-sales CAGR. The top of the list isn&#8217;t who you&#8217;d guess.Barkley L. Hendricks leads at 47.3%. That $48,000 portrait is his. His 2008 retrospective pulled him out of obscurity, and the market is still catching up to what the institutions already decided.Samia Halaby follows at 34.4%. Her Water Lilies sold for about $37,000 in 2020 and $138,600 in 2024 &#8212; the same canvas, 3.7x, in under four years. Eight of her ten best results have landed in the last three years.The rest of the five run the same script. Manoucher Yektai (30.8%) was a New York School painter Leo Castelli once backed, then all but forgotten, now being rediscovered. Shanti Dave (28.9%) is a Baroda Group pioneer finally getting priced as Indian Modernism reaches Western sale rooms. Frank Bowling (25.6%) spent decades in neglect before a Tate retrospective and Hauser &amp; Wirth &#8212; and now museums compete for the work.Here&#8217;s the thread that ties all five together. Every one of them is an artist the canon skipped, revalued once the institutions caught up. None of them are hot the way a trending contemporary name is hot. They&#8217;re being repriced &#8212; corrected &#8212; as the museum shows and the gallery representation force the market to look again. The retrospective comes first. The price follows.That&#8217;s the pattern worth watching, because it repeats. When a long-overlooked artist gets a serious retrospective, the repeat-sales math tends to move before the headlines do.You can run this yourself in about a minute: open Arthur, go to Analytics &#8594; Artists &#8211; Price CAGR, and filter by Post War. Sort it however you like &#8212; the whole ranking is there.&#8212; JamesArthur is free on iOS and Android, and at arthuranalytics.com.

Post-War Artist Repeat Sales Price Performance

The same painting, sold twice

Old Masters have a reputation: the sleepy corner of the art market. Slow turnover, thin bidding, works that trade once a generation. That&#8217;s the story, anyway.So I ran Arthur&#8217;s Top Surprises at Auction for 2026 year to date &#8212; Old Masters (born before 1821) only, at Christie&#8217;s, Sotheby&#8217;s, and Phillips &#8212; expecting quiet. Instead, the top five lots all sold for 12 to 16 times their estimates.The headliner: Michelangelo&#8217;s Study for a foot of the Libyan Sibyl, $27.2 million at Christie&#8217;s &#8212; 1,454% of estimate. A preparatory drawing. Of a foot.But the lot that tells the real story is smaller. After Titian, An oak tree in a landscape, sold for $215,900 at Christie&#8217;s &#8212; 1,627% of estimate. It&#8217;s not even an autograph work. It&#8217;s a copy. Same with Follower of Hieronymus Bosch, Hell, at $537,600 &#8212; 1,244% at Sotheby&#8217;s. Rounding out the five: Ambrosius Francken at 1,373% and a calligraphy attributed to Zhang Jizhi at 1,255%.One trophy lot going wild is an auction-room story. Copies and followers beating estimates by twelve times is a market story. Bidders are coming back to old material &#8212; and the estimates haven&#8217;t caught up yet.You can run this yourself in about a minute: open Arthur, go to Analytics &#8594; Top Surprises at Auction, filter by period, auction date and house, then sort by Estimate %.&#8212; JamesArthur is free on iOS and Android, and at arthuranalytics.com.

Slow turnover, thin bidding!

A drawing of a foot just sold for $27 million

Walk any art fair and you&#8217;re seeing the end of a long argument. Months of decisions about which artists to bring, how many works, at what prices &#8212; all compressed into one booth. Nobody ships works across an ocean unless they believe they&#8217;ll sell.That&#8217;s why a gallery&#8217;s booth is its most honest statement. And until now, there was no way to study them systematically.New on Arthur: Gallery Art Fair Representation. For every gallery at every fair, see which artists they brought, how many works, and the works and prices themselves.The comparison is where it gets interesting. Pull up a gallery&#8217;s booth at Frieze New York next to its booth at Art Basel, same season. Often a different roster and different price points. Basel draws European collectors; Frieze skews American. What a dealer chooses to show each audience tells you how they read each market.It works across time, too. Compare this year&#8217;s booth to last year&#8217;s. When a gallery drops an artist from its fair rotation, that&#8217;s information. When an artist starts appearing in more booths each season &#8212; different galleries, different cities &#8212; you&#8217;re watching collector demand build before it reaches the auction record.Advisors have always done a version of this by hand, digging through old fair PDFs and inbox previews. Now it&#8217;s one screen.Find it in the app: Analytics &#8594; Gallery Art Fair Representation.Headed to a fair this fall? Look up what each gallery brought last year before you walk the aisles. You&#8217;ll see who changed their mind &#8212; and about whom.Arthur is free on iOS, Android, and at arthuranalytics.com.&#8212; James

You can now build your own Arthur

Recent Blog

Picasso has sold $12.5 billion at auction. That's the boring part.

The sales nobody publishes are now on the artist page

941 Warhols have sold more than once

Collect with Conviction