The number Sotheby’s put in its last press release was a public-auction number. The number Christie’s put in its last press release was a public-auction number. Both houses have private sales desks that are now doing more volume than the rooms they were built to feed, and neither is going to put that on a press release unless somebody makes them.
This is not a scandal. It is a business model evolution that almost nobody in the collector base has caught up with. The auction room has become the marketing department for the private desk.
The private desks are the main event
Five years ago, a private sale at Christie’s or Sotheby’s was understood as a quiet alternative: things too sensitive, too illiquid, or too fresh for the block. That framing is obsolete. Both houses now run private sales operations with dedicated specialists, dedicated legal and escrow infrastructure, and, critically, dedicated balance-sheet capacity.
Internal chatter across the trade puts Christie’s private sales volume comfortably in the multi-billion range annually, with Sotheby’s in a similar zone. On some quarters, private has outrun public. The houses acknowledge this in their investor conversations when asked directly. They do not lead with it.
Phillips has pushed harder into private in the last eighteen months. Bonhams is trying to build something. The secondary dealers, the real ones, have been doing this for decades and are watching their pricing power get squeezed by two counterparties with far bigger marketing reach.
Why sellers actually prefer it
Ask any dealer who has placed a mid-eight-figure work in the last two years whether they would rather go public or private, and the real answer is almost always private. Not because public is dead. Because private solves for a specific list of seller problems that public cannot.
- No public buy-in if it fails. A failed evening sale lot leaves a scar on the tape.
- Price confidentiality. Nobody knows what it cleared at, including your neighbor who owns the smaller version.
- Flexibility on terms: payment schedules, restitution carve-outs, options, earn-outs linked to future sale.
- Speed. An evening sale calendar is fixed. A private deal can close in six weeks.
- Relationship protection. Placing directly with a known collector preserves provenance integrity.
For works that need delicate placement, where a public failure would permanently impair the value of the remaining inventory in that artist’s market, private is not a preference. It is the only responsible route.
The information asymmetry problem
Here is where it matters for everyone reading the tape. Every private sale is a print that never prints. The market-clearing price for a Baselitz, a Scully, a Morandi, a specific Tuymans, is being set in a room you cannot see, between a buyer and a specialist you do not know, with terms you will never verify.
The public evening sale tape is, in 2026, an increasingly partial view of where the actual transactions are occurring. When advisors tell you that an artist is “quiet,” they might mean the public record is quiet and the private desk is running three deals in that name this quarter. Those are not the same thing.
“The auction room has become the marketing department for the private desk.”
The houses, unsurprisingly, are comfortable with this. It gives them pricing power over their own reference data. A specialist can tell a seller, with a straight face, that “the last comparable private transaction was at a strong level” and the seller has no way to audit the claim. Trust me is the new fair market value.
How the room still matters
Do not read this as the evening sale being a sideshow. The room still matters, but its function has changed. The public auction is now principally a price-discovery and marketing instrument for the private desk. A successful evening sale result for an artist at a given tier resets the private ask for every other work by that artist in the specialist’s phone book. A failed evening sale result knocks the private bid by the same logic.
This is why the houses are increasingly willing to take losses on public sale lots (via aggressive guarantees) that they know will not clear at the level required. The loss on the guarantee is, in their internal accounting, a marketing expense for the private book. You take a two-million-dollar haircut on a high-profile Monet to set a print that lets you move four other Monets privately at the new reference.
Who actually knows what cleared
The WhatsApp threads know. There are probably twenty people in the world, across both houses, the top three or four private dealers, and a handful of advisors, who have a credible real-time view of what is trading privately and at what level. Easton Cain is, per several trade accounts, in one or two of those threads. Most collectors are not.
If your view of the market is formed by auction results, plus what your dealer tells you, plus what the art press writes, you are looking at the light coming off the water. The fish are below.
What this means for public-tape quality
Three effects worth naming, because they are going to get worse before they get better.
First, the public tape is increasingly noisy at the top. Big lots are guaranteed, often with third-party irrevocable bids, often priced to support a private book. They are not clean market prints. Treat them as such.
Second, the public tape is increasingly thin at the middle. The best sub-flagship material is being routed private. What remains on the block is the leftover, the awkward, or the consignor who could not get the private route to work.
Third, the public tape increasingly lags the private tape. By the time a name “prints” publicly at a new high, the private desk has already been transacting at that level for quarters. The public auction is the public announcement of a private trend that already occurred.
The relationship, working in both directions
It is worth being precise about the relationship between the room and the desk because the trade often talks past it. The public auction feeds the private desk in three ways: it generates reference prices, it generates introductions (the buyer at an evening sale becomes a client of the private desk), and it creates narrative momentum the desk can sell into. The private desk feeds the room by conditioning expectations. A consignor who has been “advised” privately on value will arrive at the evening sale consignment conversation with a different anchor point than one who has not.
What used to be two separate businesses are now functionally one business with two tape outputs, one public, one private, each shaping the other. A specialist’s job today is to know how to move a work between them and to sequence those moves correctly. That sequencing is where the real expertise sits, and it is not visible from outside the house.
Be skeptical of the press release
The houses will continue to post total sale volume numbers that exclude private, and the trade press will continue to report them as if they were the main data. They are not. They are the shop window. The stockroom is where the business is.
A few specific things to watch over the next twelve months. Sotheby’s, under its current ownership structure, has pressure to show top-line. Expect increasingly aggressive cross-selling between the private desk and the room, with guarantee structures that blur the distinction further. Christie’s is likely to continue to grow its private desk faster than its public book. Phillips will try to carve a private niche in post-war design and contemporary, with mixed results.
The forward call
Here is the test, and it is a narrow one. By the end of the next fiscal reporting cycle, we expect at least one of the two major houses to break out private sales volume as a separate disclosed segment, either voluntarily or in response to competitive pressure. The number will surprise people. Not because it is large, which everyone in the trade already suspects, but because of the growth rate attached to it.
If that disclosure does not come, and if the press releases keep conflating the two, the public auction number is going to matter less and less as a signal each quarter. You will be reading a tape that is increasingly describing the wrong market. Be careful what you treat as a data point.
Nothing in this article is investment advice. CreativeSlop is an independent publication. Figures rounded for readability. Names of market participants referenced in good faith from on-the-record and on-background conversations.