Product Reports Resources Pricing Login Book a demo
COMPANY PROFILE

StumbleUpon

Explore full profile

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

San Francisco, United StatesFounded 2001eCommerce & Marketplaces
Valuation $100–250M Last recorded · 2011
Revenue $10–50M Latest reported FY
Total funding $10–50M Disclosed equity funding
Unlock exact values This page shows ranges. Dealroom has the exact numbers for StumbleUpon and the history behind them.

About StumbleUpon

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.

Source: Dealroom company data

At a glance

Status
Acquired
Founded
2001
Headquarters
San Francisco, United States
Open positions
None listed
Dealroom signal
62.3/100
Industry
Media
Sub-industry
Content production
Sector
eCommerce & Marketplaces, Advertising, Entertainment, Search Engine, Social Network
Business model
Marketplace & ecommerce
Client focus
b2c
Investment activity
1 company, latest Sep 2013
Capital deployed
—
Preferred round
ACQUISITION

Funding history

5 recorded events

Company financing events and reported valuations.

Deal typeDateAmountValuationInvestorsSource
SERIES B✓Equity / VC Mar 2011 $17M $68M DAG Ventures · Garrett Camp · Accel · August Capital —
SERIES A✓Equity / VC Apr 2009 — — SV Angel · Garrett Camp · August Capital · Sherpalo Ventures —
Showing the latest 2 of 5 recorded eventsBook a demo for the full funding history →

Financials

Revenue over time

Revenue, earnings and other financial measures where available. Years marked “E” are estimates.

YearRevenueGrowth
2026
2025
2024
2023
2022
2021
2020 —
Company filings, research estimates and Dealroom dataBook a demo for the full financial model →

Growth signals

StumbleUpon website traffic

Latest recorded traffic for StumbleUpon is 120K monthly website visits, down 7.7% over the last three months.

Latest monthly visits120K 3-month web change-7.7%
Summary metrics are public; monthly history is available with a demoCompare with peers →

Similar companies

Closest operating peers by Dealroom taxonomy

Company identity and context are open; selected comparison metrics preview what is available on the platform.

Showing 8 of the closest matchesCompare every metric →

Investments and acquisitions

Capital deployed

Recent portfolio relationships for companies that also act as investors or acquirers.

Investors

12 investors on the cap table

From Dealroom's funding and investor records, grouped by the round each investor first entered.

Seed4 investors entered at this stage

Series A6 investors entered at this stage

Other known investors2 additional known investors

  • eBay
  • Mitch Kapor
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.

Global footprint

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

Market sentiment

Posts on X, past 7 days

An AI-synthesised read of the highest-engagement posts about StumbleUpon on X, ranked by likes and reposts, corporate channels excluded.

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

See StumbleUpon’s full profile on Dealroom

Request a free trial to see the complete deal history, financials, people graph and growth signals.

Takes under a minute. Already use Dealroom? Log in.