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StumbleUpon

eCommerce & Marketplaces · San Francisco, United States · Founded 2001

Discovery engine that finds and recommends personalized web content to its users MoreLess

StumbleUpon is a web discovery platform that helps users find and share content tailored to their interests. Operating in the social networking and digital marketing space, StumbleUpon serves a diverse range of clients, including individual users looking for personalized content and businesses seeking targeted advertising opportunities. The platform allows users to rate, recommend, and share content, creating a personalized web experience. StumbleUpon generates revenue through advertising and marketing services, offering businesses the ability to reach specific audiences on both mobile and desktop devices. By leveraging user data and preferences, StumbleUpon ensures that users are consistently presented with content that aligns with their interests, enhancing user engagement and satisfaction.

Keywords: web discovery, personalized content, social networking, digital marketing, targeted advertising, user engagement, mobile, desktop, content sharing, user preferences.

Talent graph

StumbleUpon's talent

Book a demo to see the people
Team profiled 31 named & role-tagged
Founders Hidden — book a demo/100 quality score
Key operators 3 quality Hidden — book a demo/100
Potential founders Hidden — book a demo likely future founders
Startup mafia Hidden — book a demo alumni-founded startups
Talent movements Hidden — book a demo in · Hidden — book a demo out past 12 months

Source: Dealroom Talent Intelligence.

Investors

10 investors on StumbleUpon's cap table

Sourced from Dealroom's funding history. Investor profile links are shown where available.

Seed 4 investors entered at this stage
Series A 6 investors entered at this stage

Global footprint

Where StumbleUpon has talent and traffic

Workforce by country
🇺🇸 United States · San Francisco HQ
Book a demo for the full country breakdown

Market sentiment

What the market is saying about StumbleUpon

An AI-synthesized read of the highest-engagement posts about StumbleUpon on X over the past 7 days. We rank by likes & retweets, ignore corporate channels, and surface the themes that broke out from real people.

Reading the room on X — pulling top posts and synthesizing themes…

Source: X recent search ranked by engagement (likes + retweets) · Synthesis by Claude · Cached for 1 hour

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Live deal flow, founder pedigree, hiring signals, revenue trajectory, and the full cap table.