Plume
PrivateLast Round
Series F
Oct 12, 2021
Est. Valuation
$2.6B
Total Funding Raised
$697.2M
Momentum
Top 5%
of companies Caplight tracks
Company Overview
Plume is a telecommunications software company that provides a cloud-controlled experience platform for Communications Service Providers (CSPs) to deliver smart home and business services.
Sector
Telecommunications & Networking
Verticals
Internet Providers, Network Security, Network Analytics, Business Intelligence, Software-Defined Networking
Business Model
B2B2C
Customer Profile
Subscription SaaS, Hardware + Subscription
AI Layer
Application
Keywords
Historical Pricing
Historical view of private secondary pricing and transaction trends.
Plume Comparables
Compare Plume with similar companies based on industry and business-model similarity.
| Company | Similarity | Market Cap |
|---|---|---|
| Airties | 87% | |
| SoftAtHome | 77% | |
| Axon Networks | 75% |
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Plume Funding Rounds
Historical fundraising activity
| Round | Date | Amount Raised | Valuation | Investors | Sources |
|---|---|---|---|---|---|
| Series F | Oct 12, 2021 | ||||
| Series E | Feb 23, 2021 | ||||
| Series D | Feb 26, 2020 | ||||
| Debt | Feb 26, 2020 | ||||
| Series B | Jun 6, 2017 | ||||
Series A | Jan 25, 2016 |
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Key People
Founding team and executive leadership
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Plume Investors
Notable investors and investment history
| Investor | Rounds |
|---|---|
| SoftBank Investment Advisers | Series F |
| Liberty Global Ventures | Series A, Series F, Series D, Series E, Series B |
| Jackson Square Ventures | Series F, Series E, Series B, Series A |
| Qualcomm Ventures | Series D |
| SoftBank Group | Series F |
| Samsung Venture Investment | Series B |
| WestRiver Group | Debt |
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Market signals
Structured signals derived from secondary market and firmographic data.
- Sep 16, 2026
Achieved ISO 27001 and SOC 2 Type 1 certifications.
- Aug 20, 2026
J:COM named as a new customer.
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Recent news
Latest coverage and updates
- partners_withNov 2, 2026
Plume and National Police Agency partner with public- and private-sector organizations in a coordinated effort combining security research, threat intelligence, and network expertise to identify and disrupt the X.CPE botnet in California on Nov 2nd '26.
- partners_withNov 2, 2026
Plume and Synthient LLC partner in a coordinated effort combining security research, threat intelligence, and network expertise to identify and disrupt the X.CPE botnet in California on Nov 2nd '26.
- partners_withNov 2, 2026
On Nov 2nd '26, Plume and Lumen Technologies, Inc. partner in a coordinated effort combining security research, threat intelligence, and network expertise to identify and disrupt the X.CPE botnet, announced in California.
- partners_withNov 2, 2026
Plume and Human Security, Inc. join a coordinated effort with public- and private-sector partners that combines security research, threat intelligence, and network expertise to identify and disrupt the X.CPE botnet, which affects more than 1.3 million set-top boxes across more than 200 countries, in California on Nov 2nd '26.
- launchesOct 13, 2026
Plume introduces Plume Console at Network X in Austria on Oct 13th '26, giving ISP teams AI agents to investigate subscriber issues, deploy agents and direct actions across their systems.
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Plume Filings
Explore SEC and related filing metadata, where available.
| Type | Date | Amount Offered | Amount Sold | Filing | Pages | Download |
|---|
Filing documents are not displayed on this public page. Request access to learn about available coverage.
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Frequently Asked Questions
Common questions about Plume's valuation, stock price, and market status.
Is Plume a public or private company?
Plume is a private company.
What is the current stock price of Plume?
Plume is a private company, so its shares have no public market price. Caplight tracks Plume's secondary market activity and provides MarketPrice™ estimates of its share price to Caplight users.
How much is Plume worth (valuation)?
Plume's valuation is estimated at $2.6B based on funding round data.
Can I buy Plume stock?
Plume shares may be available on secondary markets subject to transfer restrictions. Caplight facilitates secondary market transactions for accredited investors.
When was Plume's last funding round?
Plume's most recent funding round was Series F on October 12, 2021.
Who are the main investors in Plume?
Key investors in Plume include SoftBank Investment Advisers, Jackson Square Ventures, Qualcomm Ventures, SoftBank Group, Spark Capital.
Will Plume IPO soon?
No public IPO plans have been announced for Plume.
How can I track Plume secondary market activity?
Caplight tracks bids, offers, and trades in Plume's shares on secondary markets.