About StumbleUpon
StumbleUpon is a Media & Entertainment company based in San Francisco (United States) founded in 2001, and was acquired by eBay in May 2007. Web and mobile content is discovered and recommended to users. StumbleUpon has raised $18.5 million across 4 funding rounds from investors including eBay, Accel and August Capital. The company has 31 employees. StumbleUpon has completed 1 acquisition, including 5by. Its website stumbleupon.com draws about 171 thousand monthly visits. StumbleUpon offers products and services including Content Discovery Service and Web Discovery App. Its focus areas include Consumer, Social Platforms, Horizontal and Discussion Forums. Its legal entity is StumbleUpon, Inc. Its competitors include Reddit, Whisper and Amino Apps; 3 of its 3 listed competitors have raised funding.
Company details
StumbleUpon is a discovery engine that finds and recommends web content to its users. Its features allow users to discover and rate web pages, photos and videos that are personalized to their tastes and interests using peer-sourcing and social-networking principles. Toolbar versions exist for Firefox, Google Chrome, Opera, Internet Explorer and Safari. The StumbleThru service allows registered users to stumble on specific sites. Stumble video aggregates videos from DailyMotion, MetaCafe, MySpace, Vimeo and YouTube etc. StumbleUpon acquired 5by, a video discovery app in 2013. Mobile apps exist for Windows, iOS, Android. StumbleUpon was acquired by eBay in May 2007 for 75M.
- Headquarters San Francisco, United States
- Employees 31
- Stage Acquired
- SectorsMedia & Entertainment
- Website stumbleupon.com
- Social LinkedIn X Facebook
- Acquired by eBay (May 2007)
- Legal Name Stumbleupon, Inc
Products & Services of StumbleUpon
StumbleUpon offers a comprehensive portfolio of products and services, including Content Discovery Service and Web Discovery App.
Tool for one-click personalized web content exploration and recommendations.
App that curates and delivers tailored web gems based on user interests.
Funding Insights of StumbleUpon
StumbleUpon has successfully raised a total of $18.5M across 4 strategic funding rounds. The most recent funding activity was a Series B round of $17 million completed in March 2011. This substantial capital infusion reflects strong investor confidence in the company's business model, growth potential, and market opportunities. The funding enables strategic expansion, product development, market penetration, and operational scaling to drive long-term value creation and competitive advantage.
- Total Funding $18.5M
- Total Rounds 4
- Last Round Series B — $17M
- Investors Count 6
All 4 funding rounds of StumbleUpon with amounts and investors; the two latest post-money valuations are shown, the rest are part of the premium plan.
| Date | Amount | Transaction Name | Valuation | Lead Investors | Investors |
|---|---|---|---|---|---|
| Mar 2011 | $17M | Series B | – | Accel, August Capital | – |
| Apr 2009 | Series A | – | – | ||
| Dec 2005 | $1.5M | Seed | – | – | |
| Jan 2001 | Angel Round | – | – | – |
7 investors in total: 7 institutional.
Investors in StumbleUpon
StumbleUpon has secured backing from 7 investors, including venture fund and institutional investors. Prominent investors backing the company include eBay, Accel and August Capital.
| Investor | Description | Founded Year | Domain | Location |
|---|---|---|---|---|
Accel is recognized as a leading venture capital firm. | 1983 | accel.com | Palo Alto, United States | |
Venture capital is invested personally in fewer enterprises, with support provided for building game-changing businesses. | augustcap.com | |||
Mid-stage venture capital investments and support for tech entrepreneurs. | dagventures.com | |||
US focused seed and early-stage VC firm | firstround.com | San Francisco, United States | ||
Early-stage investment in technology sectors is conducted by Sherpalo Ventures. | sherpalo.com | |||
Early-stage investments are provided to transformative technology companies. | svangel.com | San Francisco, United States | ||
Multi-category consumer products are sold via an online marketplace platform. | 1995 | ebay.com | San Jose, United States |
Investor details for StumbleUpon
The complete investor list, round-by-round participation and investor portfolios require an active premium plan.
- Complete investor list
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Investments & Acquisitions by StumbleUpon
StumbleUpon has strategically engaged in corporate development activities, having acquired 1 company. Notable acquisitions include 5by.
| Company Name | Description | Domain | Location | Founded | Acquired | Amount |
|---|---|---|---|---|---|---|
Videos are curated from the internet based on user preferences. | 5by.com | San Francisco, United States | 2012 | Sep 2013 | •••• |
Complete acquisition details for StumbleUpon
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- Acquired stakes
- Deal sources
- Complete history
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Competitors of StumbleUpon
StumbleUpon has 3 listed competitors in our database, 3 of them funded. They include Reddit, Whisper and Amino Apps.
| Company Name | Domain | Founded | HQ Location | Total funding | Employees | Description |
|---|---|---|---|---|---|---|
| redditinc.com | 2005 | San Francisco, United States | $1.21B | 2,013 | Reddit is operated as a social media and community platform. | |
| whisper.sh | 2012 | Santa Monica, United States | $60M | 149 | An underground music label is operated for growing talent. | |
| aminoapps.com | 2011 | New York, United States | $72.35M | 33 | Online interest-based communities are enabled for user engagement. |
Detailed competitors of StumbleUpon
The full competitor set, operating metrics and side-by-side benchmarks require an active premium plan.
- Full competitor set
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Web traffic of StumbleUpon
The website of StumbleUpon (stumbleupon.com) receives about 171.3K visits a month.
- Monthly visits171.3K
▲ 15.9% vs previous month
Websites whose visitors overlap most with StumbleUpon. Affinity shows how closely the audiences match.
| Website | Domain | Audience affinity | Monthly visits | Global rank | Profile |
|---|---|---|---|---|---|
| delicious.com | 100% | 14.8K | #1,917,493 | View details | |
furl.net | furl.net | 98% | – | ||
| mix.com | 97% | 1.2M | #45,230 | View details | |
| technorati.com | 95% | 19K | #1,277,689 | View details | |
spurl.net | spurl.net | 92% | – | ||
| •••••••••• | ••••••.com | ••% | •.•M | #••••• | – |
| •••••••••• | ••••••.com | ••% | •.•M | #••••• | – |
| •••••••••• | ••••••.com | ••% | •.•M | #••••• | – |
All 36 similar websites and full traffic analytics for StumbleUpon
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- 36 similar websites
- Audience overlap
- Engagement analytics
- Traffic by brand
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Top companies in Digital Media & Publishing Platforms
3 companies that operate in the same segment as StumbleUpon (Digital Media & Publishing Platforms) in United States, ranked by their profile score on The Company Check.
| Company | Description | Founded | Location | Total funding | Revenue | Employees |
|---|---|---|---|---|---|---|
Content is shared and discussed across user-driven communities. | 2005 | San Francisco, California, United States | USD 1.62 B | |||
Reward-based crowdfunding is facilitated for content creators and musicians. | 2013 | San Francisco, California, United States | USD 412.1 M | 1,218 | ||
Subscription-based platform for publishers' content management is provided. | 2017 | San Francisco, California, United States | USD 189.5 M | USD 1.45 M | 4,285 |
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Related news about Stumbleupon
Complete news archive for StumbleUpon
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Frequently Asked Questions about StumbleUpon
StumbleUpon was founded in 2001.
StumbleUpon is headquartered in San Francisco, United States. It is registered at San Francisco, California, United States.
StumbleUpon is a funded company, having raised a total of $18.5M across 4 funding rounds to date.
StumbleUpon has 31 employees.
StumbleUpon is a discovery engine that finds and recommends web content to its users. Its features allow users to discover and rate web pages, photos and videos that are personalized to their tastes and interests using peer-sourcing and social-networking principles. Toolbar versions exist for Firefox, Google Chrome, Opera, Internet Explorer and Safari. The StumbleThru service allows registered users to stumble on specific sites. Stumble video aggregates videos from DailyMotion, MetaCafe, MySpace, Vimeo and YouTube etc. StumbleUpon acquired 5by, a video discovery app in 2013. Mobile apps exist for Windows, iOS, Android. StumbleUpon was acquired by eBay in May 2007 for 75M.
StumbleUpon's top competitors include Reddit, Amino Apps and Whisper.
StumbleUpon offers Content Discovery Service and Web Discovery App.
StumbleUpon has made 1 acquisition, including 5by.
StumbleUpon has 7 investors. Key investors include eBay, Accel, August Capital, DAG Ventures, and First Round Capital.
StumbleUpon operates through Stumbleupon, Inc.
Yes. StumbleUpon was acquired by eBay in May 2007.
The website of StumbleUpon receives about 171 thousand visits a month.