ATG wants a cut of your next great find

An old guitar can demand a surprisingly modern shopping experience. A buyer wants photographs, a trustworthy description, a way to bid and some confidence that the instrument will arrive in one piece. The romance is in the object. The work is in the transaction. Auction Technology Group has spent years assembling a business around that gap.

ATG sits behind names many shoppers know better than its own: The Saleroom, LiveAuctioneers, Proxibid and, since August 2025, Chairish. Its marketplaces connect people selling used goods with people who want them. The inventory ranges from jewellery and decorative art to factory equipment and retail returns. A collector and a machinery buyer can use the same corporate network without ever browsing the same storefront.

The interesting question is how much of each purchase ATG can help complete. Finding the lot is one service. Running the bidding is another. Advertising, processing payment and arranging delivery create further opportunities to earn money. That expansion has made ATG a broader commerce business, with a more complicated profit story.

The newspaper that learned to take bids

The company’s roots lie in Antiques Trade Gazette, founded by journalist Ivor Turnbull in 1971. Its original purpose was practical: help auctioneers reach buyers and help dealers and collectors find forthcoming sales. A useful calendar could make a distant auction visible. The newspaper gave a scattered trade a common place to look.

ATG began listing auction calendars online in 1998. Live bidding arrived on thesaleroom.com in 2006, followed by i-bidder in 2007. The distinction mattered. Readers could move from learning that a sale existed to participating in it. Discovery and the transaction were edging closer together.

The next decade added machinery as well as machinery for selling. In 2013, ATG acquired BidSpotter.com and launched its Global Auction Platform. Lot-tissimo brought a German art-and-antiques marketplace in 2018. The 2020 combination with Proxibid enlarged its North American reach, while Auction Mobility added customised auction technology.

Private-equity investor ECI describes having backed the transition from a publishing-oriented business toward online marketplaces. That history helps explain ATG’s position today: it sells infrastructure to an existing profession, with established catalogues, clients and expertise. It does not need to persuade people to invent auctions. It needs to persuade auctioneers that its network helps their auctions work better.

Different doors into the same second-hand economy

For art and antiques, The Saleroom serves UK and European buyers, LiveAuctioneers has a North American focus, and Lot-tissimo addresses the German market. EstateSales.NET helps people discover estate sales. Chairish and Pamono add vintage furniture, lighting, decor and art sold through fixed-price listings.

Industrial buyers encounter Proxibid and BidSpotter, whose inventory includes agricultural and manufacturing equipment. i-bidder covers categories including surplus consumer goods and retail returns. Keeping specialist brands makes sense here: someone searching for a watch and someone outfitting a workshop have different expectations about descriptions, delivery and what constitutes a sensible purchase.

Professional sellers are central customers. ATG gives them an audience and tools for operating online. Buyers include collectors, dealers, consumers and businesses seeking equipment. The group reports more than 3,900 auction houses using its platforms. It can put a local auctioneer in front of buyers far beyond the people who would drive to the saleroom.

The auctioneer still supplies crucial judgement about the objects. Technology can distribute photographs and descriptions, but the quality of those descriptions matters enormously when every item is different. ATG’s proposition combines that specialist supply with software and discovery. Its expertise is the coordination of the sale, from catalogue to checkout.

The work after “sold”

The group earns commissions, subscriptions and listing fees, alongside software and service revenue. The practical ambition is to handle more of the steps surrounding a purchase. A seller might pay for additional marketing; a winning bidder might use integrated payment and shipping. ATG benefits when its services make the sale easier to finish.

Its product names are almost aggressively functional. atgAMP supplies paid digital marketing. atgPay handles integrated payment. atgShip handles delivery. Wavebid provides back-office tools, including cataloguing and accounting. Auction Mobility supports sellers that want customised software and websites.

atgXL tackles a particularly unglamorous problem: repeated catalogue uploads. An auctioneer can expose a timed auction across multiple ATG marketplaces and its ATG-powered website while managing the sale in one place. The Partner Network extends distribution to specialist third-party listing sites. More places to discover an object need not mean more separate auctions to administer.

Shipping shows why these details have commercial weight. ATG’s early atgShip trial involved more than 1,500 lots over two months in 2023. In its following annual results, the company reported higher average bidding activity and merchandise value at auctions offering the service. That observation supports the product’s rationale, though it does not establish that shipping alone caused the improvement.

For a buyer, the useful discipline is to price the whole purchase. A hammer price is only the start when the auction also carries premiums, taxes, online charges or delivery costs. Terms vary by sale and marketplace. A cheap object can become an expensive acquisition once it needs packing and a long journey.

An $85 million answer to “Can I just buy it?”

ATG’s acquisitions required substantial capital. Its February 2021 IPO generated £247.4 million in gross cash consideration from new shares. A further £244 million equity placing followed that June. The announced LiveAuctioneers deal carried an enterprise value of up to $525 million, including a potential earn-out, and completed in October.

EstateSales.NET followed in 2023 at an announced $40 million purchase price. Then came Chairish in August 2025 for an announced $85 million. These are acquisition prices, rather than a tally of the cost of developing ATG’s software. They bought businesses, customer relationships and routes into additional markets.

Chairish brought its US marketplace and Europe’s Pamono, with more than 12,000 sellers and 1.3 million curated listings at the time of the announcement. It also brought a different shopping habit. A person furnishing a room may want a distinctive chair without organising their week around an auction deadline.

The deal made that difference part of ATG’s strategy. Fixed-price listings offer another way to match buyers with vintage goods. The underlying appetite for unusual objects can be similar even when the preferred purchase process is different. ATG bought a route to that audience, rather than asking every furniture shopper to become a bidder.

The bill comes due in the profit column

In FY2025, ATG’s revenue rose to $190.2 million from $174.2 million. Adjusted EBITDA fell to $76.8 million from $80 million. Shipping’s lower margins, Chairish’s inclusion and higher costs helped make sales growth less profitable. These are US-dollar figures, despite the company’s London listing.

A $150.9 million non-cash goodwill impairment helped produce a $145.8 million loss before tax. The write-down reflected weaker assumptions about acquired businesses, including growth and discount rates. It was an accounting reduction in value, not a new cheque for that amount. Even so, it challenged the expected returns from earlier expansion.

Competitive pressure also became visible. Invaluable offers art-marketplace, payment, private-label and shipping services. Industrial auctioneers have alternatives including Ritchie Bros. and independent software providers. ATG cannot assume that a seller needing online bidding will also choose its marketplace audience.

The first-half 2026 update identified agricultural weakness, auction-house consolidation and sellers adopting third-party white-label tools as pressures on industrial revenue. The limitation is concrete: a network has less earning power when demand weakens or established sellers can reach customers through their own channels. More distribution does not automatically fix either problem.

A new chief, and a quieter acquisition appetite

ATG’s own ownership became contested. FitzWalter Capital abandoned its takeover pursuit in February 2026 after the board rejected a 400p-per-share approach. In May, Duncan Painter became chief executive, bringing experience from Ascential and Omnicom’s commerce business. John-Paul Savant provided transitional support.

There was a revealing shift in emphasis in the May interim statement: investment in existing operations and debt reduction came ahead of further deals. “M&A is not required as part of the Group’s strategy,” the company said. The public record shows the change in priorities without requiring a story about a private boardroom conversion.

“M&A is not required as part of the Group’s strategy.”ATG interim results / May 2026

By July, ATG reported third-quarter revenue growth of 7.8% on a pro forma constant-currency basis and raised its full-year growth outlook to 5.5-6.5%. That comparison includes Chairish in the earlier period and removes currency movements. The company also reported lower leverage, while industrial revenue remained under pressure. The recovery was uneven.

The work falls to teams across multiple countries. ATG advertises hybrid working, an internal training academy and employee share schemes. Its stated purpose links resale with the circular economy: keeping useful goods in circulation. A marketplace makes that possible by helping the next owner find the item; it still has to make the purchase convenient enough to happen.

Other businesses can borrow the sequence. Start with a specific trade’s discovery problem, reduce repeated administrative work, then examine the awkward steps that stop a buyer completing a purchase. ATG’s experience also argues for checking margins at each step. Getting an old guitar into new hands can support several services. Whether those services earn their keep is the question that follows it home.