MentionFox lists 19 Marketplace companies for 2026. Of them, 7 are Y Combinator companies (the newest batch here is Fall 2026, with 1); 12 filed a Form D notice with the SEC. Across the 12 Form D notices in the table that report an amount sold, the median is $2.4M; the largest is $547M, by Whatnot Inc. (its Form D, filed Aug 18, 2026).
Other years
All years (210) 2022 (27) 2021 (30) 2020 (17)
Marketplace startups in 2026
| Company | What it does | Date | Amount | Round / stage | Record |
|---|---|---|---|---|---|
| Zedge, Inc. | Filed Sep 18, 2026 | $7.7M | SEC Form D | ||
| StartEngine Inc. | Filed Sep 14, 2026 | $7.7M | SEC Form D | ||
| AlgoChains Inc | Filed Sep 2, 2026 | $100,000 | SEC Form D | ||
| Volaren Inc. | Democratizing investing | Fall 2026 | Y Combinator batch | Y Combinator listing | |
| Bidbus, Inc. | Filed Aug 20, 2026 | $18.3M | SEC Form D | ||
| Whatnot Inc. (funding history) | Filed Aug 18, 2026 | $547M | SEC Form D | ||
| MedServ Marketplace Inc. (funding history) | Filed Jul 27, 2026 | $5,000 | SEC Form D | ||
| Pax8, Inc. (funding history) | Filed Jun 29, 2026 | $580,000 | SEC Form D | ||
| Amorphic Labs | OpenRouter for Agent Capabilities | Summer 2026 | Y Combinator batch | Y Combinator listing | |
| Palisade | AI sales agents that run your marketplace | Summer 2026 | Y Combinator batch | Y Combinator listing | |
| Stoa | The market behind AI hardware. | Summer 2026 | Y Combinator batch | Y Combinator listing | |
| Tsenta | AI career agent that finds matching jobs & applies on your behalf | Summer 2026 | Y Combinator batch | Y Combinator listing | |
| Infinite Outdoors, Inc. (funding history) | Filed May 27, 2026 | $8.5M | SEC Form D | ||
| Passage Inc. | Filed May 7, 2026 | $610,000 | SEC Form D | ||
| Stowzilla Inc. | Filed May 5, 2026 | $8,000 | SEC Form D | ||
| Beni, Inc. | Filed Apr 23, 2026 | $815,000 | SEC Form D | ||
| RentAHuman | Marketplace for AI agents to hire humans. | Spring 2026 | Y Combinator batch | Y Combinator listing | |
| RV Help, Inc. (funding history) | Filed Mar 24, 2026 | $4M | SEC Form D | ||
| Reframe | AI-native, hardware procurement marketplace | Winter 2026 | Y Combinator batch | Y Combinator listing |
Selling to these companies?
Export the list: a spreadsheet of the 19 Marketplace companies in the table below, with each one's date, amount, round or stage, the record it comes from and its MentionFox page. Free with an account; if you are not signed in, you sign up first and the download starts when you come back to this page.
Export the listA Full Report covers who runs the company, who owns it, where its money comes from and what to watch for, every claim linked to its source. See pricing.
Related startup lists
AI (33 shared) E-commerce and retail (28 shared) Fintech (20 shared) Real estate and proptech (17 shared) Logistics and supply chain (16 shared) Consumer and social app (13 shared)
Figures come only from the record linked in each row; a blank means the record gives none. How these lists are built.