Market Report

The Leiden Collection is a lending library, not a house museum. Kaplan and his wife have sent the pictures out for years, first anonymously, then under their own name after the Louvre showed the group. The Vermeer went into the Rijksmuseum's 2023 exhibition, which brought together 28 of the 37 pictures generally ascribed to him, the largest gathering ever, not the complete set. That is concentration as a method. You decide the field is the Dutch Golden Age, you buy until most of the Rembrandts still in private hands are yours, and you let museums do the exhibiting. Dou, Lievens, and van Mieris are the bench. The Vermeer is the picture that cannot be replaced.

Griffin does not wait for a catalogue. Interchange left David Geffen's wall in a private deal that reset what a trophy could cost. Basquiat's Boy and Dog in a Johnnypump came from Peter Brant. The 1982 skull later left Yusaku Maezawa in a private sale reported by Artnet; Griffin has not confirmed the price. Interchange and Pollock's Number 17A, bought together from Geffen at $300 million and $200 million, were long-term loans to the Art Institute of Chicago and later came down. The current public walls are Pérez Art Museum Miami for the Basquiats, and a Leonardo-and-studio Madonna of the Yarnwinder quietly into the Met. Nine-figure collecting is a sequence. Identify the object that cannot be replaced, pay before the room can form, let the institution finish the provenance.

Nahmad is the other sequence. Geneva Freeport is the storeroom. The family sits in the evening sales and treats Picasso as a book they have made for two generations, Giuseppe to David and Ezra, now the galleries that carry the next names. They sell when the hole in the market is real, and they buy the next picture with the proceeds. That is why the inventory is the collection. Connections, here, means knowing which phone will take which Picasso, and which Picasso is better held.

The boards that used to stamp Warhol and Basquiat closed more than a decade ago. Litigation made the opinion too expensive to give. What remains is the book. Zervos for Picasso, the Wildenstein volumes for the Impressionists, Navarra for much of Basquiat, the living compilers still at work on artists whose catalogues are unfinished. A work that is not in the accepted catalogue, with no explanation, is not a sleeper. It is a picture you cannot finance, insure, or resell at this altitude. Living scholars still move Old Master attributions. They rarely write the letter a closed board once did.

The auction-house warranty is narrower than the catalogue's confidence. Five years. Original buyer of record. Refund of the price paid. It does not travel to the next owner. It does not cover a later change in generally accepted opinion. It does not cover a scientific method that was not standard, or was unreasonably expensive, when the heading was printed. At Christie's, uppercase type is what is warranted. The essay below the heading is not. Sotheby's five-year guarantee is similar in term and buyer, not in that heading rule. Infrared and pigment analysis can end a claim. They almost never create one. That is why a serious buyer still starts with literature and provenance, and treats the lab as a check.

TEFAF Maastricht is the fair that performs this in public. Around 200 experts, split into about thirty specialist vetting committees, walk every object in the days before the doors. Art Loss Register screening starts weeks earlier. Pictures come off walls overnight. Dealers who fail do not forget it. Collectors are right to treat a Maastricht booth as the strictest fair-level filter. They should also know the legal remainder. TEFAF disclaims authenticity, title, and condition. The exhibitor still warrants. Vetting is a reputation machine. The contract is with the dealer.

Estates still sign with Christie's because Artemis is not a fund with a clock. François Pinault has owned the house since 1998. That is why a Newhouse or a Weis still wants that title page. The current $100 million-plus cluster is not a rumour. In May 2026, Pollock's Number 7A from the Newhouse pictures made $181.2 million, Brancusi's Danaïde $107.6 million, and the night as a whole cleared a billion. Salvator Mundi remains the all-time mark. The quieter 2025 fact is that Christie's three most expensive works that year never reached the evening. Private desks now take the pictures the catalogue cannot price in public.

Sotheby's rebuilt the other pole as a building and a balance sheet. The Breuer, the old Whitney on Madison, is the headquarters and the salesroom. Third-party guarantees, art-backed loans, and a 2026 securitization of those loans are the machinery. Watches, cars, and jewelry in the same headquarters fill a room a painting-only house would leave thin. Portrait of Elisabeth Lederer did $236.4 million in November 2025 because Leonard Lauder's name, the building, and the irrevocable bids arrived together. Two phones. About twenty minutes. That is how a public price gets written.

Phillips is the third book. Shorter contemporary evenings, a younger floor, and none of the invitation-only private selling shows the two poles now run. You consign there when the picture is the right modern or contemporary, or when Rockefeller and the Breuer are already full. The law still prints in New York in the same week. A dealer ask at a fair is a conversation among people who already know each other. A hammer in those rooms is the number the next conversation starts from.

First Choice is a Tuesday morning at the Messe. The serious booths are spoken for, or reserved, before lunch. In 2026 Hauser called it as strong a first day as they have ever had. A 1963 Picasso at a $35 million asking price moved early. That is the ask, not a confirmed hammer. Museum directors walk with lists. Advisors pass PDFs. The weekend is attendance. A main-sector slot remains the scarce asset: a dealer committee, hundreds of applications, and a long graduation from Statements or Feature. If your gallery is not in that hall, your living artists are not in that week's primary market.

November is closed on purpose. Paddles are applied for months out. Specialists have already mapped which phones will bid which lots. Irrevocable bids sit in the catalogue as diamonds or circles. That is why a Klimt or a Pollock can become law in minutes. The floor is written. The only drama is whether a second phone appears. You do not wander in from the street. Registration is the first filter. The second is whether a specialist will take your bid.

Paris at the Grand Palais is the 2026 alternative because it sits on a French collecting class and on a week Basel does not occupy. Avant-Première, in its second edition, is a Tuesday the galleries control. They nominate the clients. That is tighter than a standard Basel preview list. First Choice in Switzerland is still the primary open. Paris is the test of whether Europe holds a second serious week. The collector who is actually in the market treats the three as a circuit.

Gagosian's remaining edge is still a call. Directors place secondary pictures into collections that never see a catalogue. The risk is the name. He is 81, has no children, assembled a collector board in 2022, and has not given up ultimate say. Andrew Fabricant and Laura Paulson left in 2024. Brooke Lampley arrived from Sotheby's. The gallery is being professionalized in public while the product is still the man. If you want an artist he represents, or a trophy he is holding, there is one room. There is not a second Gagosian.

Hauser converts time into inventory. Somerset and Menorca, a St. Moritz gallery, and the Artfarm hotels and restaurants keep a collector in the building long enough to look at an estate properly. Bourgeois and Guston are the depth you cannot shop around. Iwan and Manuela Wirth are a family, which is a succession fact Gagosian does not have. You do not buy a major Guston in a ten-minute booth visit. You buy it after you have been in the building.

Zwirner is the control model. Kusama is a waitlist. Kerry James Marshall, Alice Neel, Ruth Asawa, and, since 2023, Gerhard Richter. One desk if you want that artist. Lucas Zwirner is the publishing arm and the next-generation signal. Fewer locations than Gagosian, tighter primary. The three still sit in front of the gavel. Allocation, and a large slice of private secondary, never reach an evening sale at all.

Salvator Mundi is still the ceiling because almost nothing else can be described as a Leonardo in an evening-sale heading. Portrait of Elisabeth Lederer, at $236.4 million, is the closest the room has come, and it still sits far below. Pollock's Number 7A at $181.2 million, nine years later, is another measurement, not a challenge. The attribution argument around the Leonardo, autograph versus workshop, is exactly why the record is hard to repeat. The next trophy has to be unique in kind, not only expensive.

The 78 percent is a structure, not a mood. In 2025, Bank of America put that share of New York evening-sale value under guarantee, nearly all of it third-party irrevocable bids. ArtTactic had already seen the May contemporary books covered at similar levels, with outside parties taking almost all of the exposure. The catalogue marks the lots. The guarantor is long a floor, short a fee, and long a slice of anything above. When the hammer falls to the backstop, the sale is a contract settling. When a second phone appears, as it did on the Klimt and the Pollock, the room did real work. Read the symbols before you read the total.

One Vermeer in private hands is not a rarity statistic. It is a closed set. A few dozen authentic pictures survive. Museums hold the rest and do not deaccession them into this market. Kaplan's Young Woman Seated at a Virginal was in the Rijksmuseum's 2023 gathering of the corpus, then it went home. "Museum-quality" in a dealer's mouth is usually a comparison. Here it is a description of the last picture a museum would take if the owner ever released it.

An irrevocable bid is a written put on a single lot. The third party agrees to buy at a strike if the room does not. In return, a fee, and usually a share of the hammer above that strike. A white-glove, fully guaranteed evening can be a perfect placement or a quiet pass to the backstop. The difference is competition after the floor. Specialists in the room already know which. The catalogue will not say it in prose. It will say it in a diamond or a circle.

The prices that set the next ask often never print. Christie's reported that its three most expensive paintings of 2025 were private, each above the $62.1 million Rothko that led the public book, and that private sales were $1.5 billion, about a quarter of the house. Sotheby's private desk then posted an all-time half-year high in 2026. Those tickets have no hammer and no published buyer. Fair booths are the other unpublished tape. Treat the evening sale as the visible settlement layer. The ceiling for a specific picture is often a number two specialists and one collector already agreed.

Succession is now two problems at once. Gagosian is key-person risk with a board and no heir. Pace, in June 2026, is model risk made public: Marc Glimcher cut artists and staff. He called the current gallery model broken and unfixable, and said the mega-gallery model requires a management overlay that pulls attention from the work. Hauser has a family. Zwirner has a son in the business. Access at this level is still personal. The useful question, if you already know Basel from November, is not who reported the strongest Tuesday. It is whether the door you use still opens when the letterhead changes.