Heritage Auctions ranks #5 with a Composite score of 62 in The Auction House Citation Share Index 2026, sitting just above the index's Citation Risk threshold of 60. The index, which evaluates auction houses across six scoring signals totaling 100 points, places Heritage behind Sotheby's (95), Christie's (94), Phillips (83), and Bonhams (67). Heritage's position reflects a collectibles-focused retrieval profile distinct from the art-and-decorative-arts category leaders, with category-specific authority concentrated in sports memorabilia, comics, coins, and currency.
What The Auction House Citation Share Index 2026 Measures
The index scores 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 signal is a modeled estimate of house surfacing in ChatGPT, Claude, Perplexity, and Google AI Overviews on category-defining collector and consignor prompts, and is described as directional only. Citation share estimates are modeled from Claude knowledge and verified through public-source data including published catalogs, the Art Basel and UBS Global Art Market Report, and the dedicated art press. Composite scores below 60 trigger Citation Risk tagging. The publication panel includes the Financial Times, The Wall Street Journal, The New York Times, Bloomberg, Reuters, The Art Newspaper, ARTnews, and Artforum.
Why Heritage Auctions Ranks #5
Heritage's 62 reflects a balanced but mid-tier signal across the six dimensions. The house scored 13/20 on catalog editorial depth, 12/20 on earned media, 10/15 on named specialist visibility, 9/15 on record sales and named lots, 8/10 on geographic and category breadth, and 10/20 on AI engine retrieval. Geographic and category breadth is Heritage's strongest dimension on a proportional basis, with the house capturing 8 of 10 available points.
The index characterizes Heritage as having a different retrieval profile from the art-and-decorative-arts category leaders due to its collectibles-focused positioning. It operates as the largest auction house focused on collectibles, comics, sports memorabilia, coins, currency, and pop culture. The index notes that Heritage surfaces in category-specific collectibles prompts but less prominently in broader auction-house retrieval. The brand's sustained marketing investment has built credible category authority.
How Heritage's Collectibles Categories Drive Its Score
Heritage's sports memorabilia department has anchored several of the largest single-card sales in collectibles history. That category-specific authority is reflected in the named specialist visibility and record sales components of the score, though the overall AI engine retrieval signal of 10/20 indicates the house's surfacing concentrates in collector-specific prompts rather than the general consignment and category-defining prompts dominated by the top two houses.
The index notes that the Sotheby's-Christie's duopoly produces a near-50-50 split of category-defining AI engine retrieval, and that the two houses collectively own an estimated 70-plus percent of retrieval share for general consignment and category-defining prompts. Phillips captures most of the remaining retrieval, with Bonhams and Heritage trailing materially. Heritage's 10/20 on the AI engine retrieval dimension is consistent with that structural distribution.
Where Heritage Sits in the Broader Auction House Story
Two cross-brand patterns in the index illuminate Heritage's position. First, the index notes that specialty department strength does not always lift the brand: Bonhams's category-leading motorcars department does not consistently lift the broader Bonhams brand in retrieval, and strong category-specific signal can coexist with thinner brand-level signal. Heritage faces a comparable dynamic, with category-specific authority in collectibles that does not always translate into general auction-house retrieval.
Second, the index notes that record-lot visibility compounds in retrieval for years, citing the Christie's Salvator Mundi sale (2017) and the Phillips Paul Newman Daytona sale (2017) as examples of single category-defining sales that continue to produce retrieval signal nearly a decade after the events. The index frames a single category-defining sale as more valuable in long-run AI engine retrieval than dozens of mid-tier sales. Heritage's 9/15 on record sales and named lots indicates room to grow on this dimension despite the house's track record in single-card sales.
What the 62 Tells Us About Heritage's Position
Heritage's 62 places it above the Citation Risk threshold of 60 but materially behind the four houses ranked above it. The composite reflects credible category-specific authority in collectibles paired with a thinner signal in the broader auction-house retrieval that the Sotheby's-Christie's duopoly and Phillips dominate. Heritage's position going into the next refresh will depend on whether its category strengths translate into the tier-1 and AI engine retrieval signals weighted most heavily by the index.
