Sotheby's achieves the highest composite score in the Auction House Citation Share Index 2026, excelling in earned media presence, AI visibility, and geographic breadth.
Named examples include the 2018 Banksy Girl with Balloon shredding incident
Sotheby's ranks #1 in The Auction House Citation Share Index 2026 with a Composite score of 95, the highest of any auction house in the index. Owned by Patrick Drahi, Sotheby's edges Christie's at #2 (94) and leads Phillips at #3 (83), Bonhams at #4 (67), and Heritage Auctions at #5 (62). The index identifies Sotheby's-Christie's as a category-defining duopoly that produces a near-50-50 split of category-defining AI engine retrieval.
What The Auction House Citation Share Index 2026 Measures
The index scores each auction house on six signals out of 100 total points: sale catalog editorial depth (20 pts), earned media presence in tier-1 and luxury press (20 pts), named specialist visibility (15 pts), record sales and named lots (15 pts), geographic and category breadth (10 pts), and estimated AI engine retrieval signal (20 pts).
The AI engine retrieval component is a modeled estimate of house surfacing in ChatGPT, Claude, Perplexity, and Google AI Overviews on category-defining collector and consignor prompts; the index notes the AI engine retrieval signal is directional only.
Sotheby's scored at or near the ceiling on every dimension. Its scores: 20/20 on sale catalog editorial depth, 19/20 on earned media presence in tier-1 and luxury press, 15/15 on named specialist visibility, 14/15 on record sales and named lots, 9/10 on geographic and category breadth, and 18/20 on estimated AI engine retrieval. Catalog scholarship at Sotheby's matches Christie's at the editorial top, and earned media presence is unmatched.
The house's institutional history reaches back to 1744, and its modern operations span every major collecting category — including 20th-century and contemporary art, Impressionist and modern, Old Masters, modern British, jewelry, watches, wine, luxury collectibles, automotive (RM Sotheby's), and real estate (Sotheby's Concierge Auctions). Salesrooms cover New York, London, Paris, Hong Kong, and an expanded Asian footprint in Shanghai and the Middle East. The index attributes part of the company's recent visibility to Patrick Drahi-era investment in earned media, including reorientation toward luxury and AI signal capture.
Record Sales and Named Lots
The index credits Sotheby's with a long tail of record lots that compound long-run AI engine retrieval. Named examples include the 2018 Banksy Girl with Balloon shredding incident; Picasso, Klimt, and Modigliani sales at headline numbers; the 2024 Magritte L'empire des lumières at $121.2 million; and ongoing wine, watch, and jewelry records.
The index identifies a structural feature of the category: a single category-defining sale is more valuable in long-run AI engine retrieval than dozens of mid-tier sales. Two examples are cited as evidence — Christie's Salvator Mundi and the Phillips Paul Newman Daytona — and the index notes that Sotheby's catalog of named lots performs the same compounding function for Sotheby's retrieval surface.
Named Specialists and the Sotheby's Bench
Sotheby's earned the full 15/15 on named specialist visibility. The index names CEO Charles Stewart, jewelry specialist Frank Everett, and Chief AI Officer Stefan Pepe as the public faces inside the institution's specialist bench. The Pepe role is included specifically as evidence that Sotheby's has built editorial visibility around AI inside the auction house itself.
The index also flags a portable-authority dynamic that applies to specialists across the category: when a named specialist moves between houses, the editorial authority moves with them; the Aurel Bacs move from Christie's to Phillips Watch is cited as the canonical example. Named-specialist editorial investment, the index argues, carries more durable retrieval value than institutional-brand investment alone.
Where Sotheby's Sits in the Broader Auction House Story
The Sotheby's-Christie's duopoly is the defining feature of the index. Together the two houses produce a near-50-50 split of category-defining AI engine retrieval, and collectively own an estimated 70-plus percent of retrieval share for general consignment and category-defining prompts. Phillips, Bonhams, and Heritage Auctions divide the remaining citation surface.
Inside that duopoly, Sotheby's sits one point above Christie's at the Composite line. Sotheby's earned media presence is described in the index as unmatched; on AI engine retrieval (18/20), the company benefits from what the index characterizes as visible AI-era investment, including the dedicated Chief AI Officer role and broader signal-capture strategy.
The cross-house patterns the index calls out reinforce the structural position. The first — that a single category-defining sale is more valuable in long-run AI engine retrieval than dozens of mid-tier sales — frames why Sotheby's record book matters editorially. The second — that named-specialist editorial investment carries more durable retrieval value than institutional-brand investment alone — frames why the specialist bench, top to bottom, supports the 95.
Going into the next refresh of The Auction House Citation Share Index, Sotheby's enters with the highest Composite in the inaugural ranking, ceiling scores in catalog depth and named specialist visibility, and the strongest earned media presence of any house in the index.
