Topsort

San Francisco, California, USA · ≈160 employees · topsort.com

Topsort is an AI-driven retail media infrastructure company founded in 2021 and based in Cambridge, Massachusetts, with additional operations in San Francisco, Boston, and Palo Alto. The company specializes in Retail Media as a Service (RMaaS), providing a backend platform that allows mid-market retailers, niche marketplaces, and brands to create and manage their own advertising networks. Topsort aims to make advanced auction-based advertising technology accessible to a wider range of businesses. The company offers a comprehensive Bidless™ retail media tech stack, which includes tools for real-time bidding, ad placement optimization, and analytics. Their platform emphasizes privacy-first principles, utilizing product data for ad targeting without relying on third-party cookies. Topsort serves clients in over 40 countries and has partnered with notable brands such as DoorDash, Petco, and HEB, showcasing its global reach and commitment to enhancing the advertising capabilities of retailers and marketplaces.

Information Technology & Services

Also: advertising · sponsored listings · auctionbased advertising · marketplace monetization · banner ads · sponsored search · sponsored brands · sponsored products · ad platform · ad server · autobidding · retail media

Funding0

Every round, secondary, debt facility or acquisition involving Topsort that Lounge tracks, newest first.

No rounds recorded yet.

Paid members see the full deals desk — every AI round and exit, filterable by type, sector and country, with investors and reported ARR, plus CSV exports. Developer membership is $9/mo.

See plans →Log in

Topsort

Funding0

Key numbers

Also on Lounge