# Altiostar, A Rakuten Symphony Company: Wireless, San Mateo, United States

> Altiostar, A Rakuten Symphony Company: Altiostar, a U.S.-based mobile technology firm, specializes in 4G and 5G open virtualized Radio Access Network (Open...

Source: https://millionrounds.com/startup/altiostar-a-rakuten-symphony-company (Millionrounds; every figure on the page links to its filing or article)

United States · [Wireless startup](https://millionrounds.com/companies)

# Altiostar, A Rakuten Symphony Company

Altiostar, a U.S.-based mobile technology firm, specializes in 4G and 5G open virtualized Radio Access Network (Open vRAN) software.

Funding reported Last round: Series C

Wireless San Mateo, United States

Company summary

- **Founded:** 2021 5 years old
- **Team:** 440 201 to 1,000 people
- **Funding reported:** $303M in dollars
- **Last round:** Series C May 2019

How sure we are

- ✓ **Listed** We know it exists and what it does
- 2 **Funding reported** A company dataset reports a raise
- 3 **Observed** A filing or a dated announcement confirms a round

No round for Altiostar, A Rakuten Symphony Company has been confirmed by a filing or an announcement yet, so nothing here counts toward an investor's record. [How we decide](https://millionrounds.com/methodology)

## About Altiostar, A Rakuten Symphony Company

Altiostar, a U.S.-based mobile technology firm, specializes in 4G and 5G open virtualized Radio Access Network (Open vRAN) software.

Founded in 2011 and now a subsidiary of Rakuten Symphony, Altiostar focuses on enabling disaggregated, multi-vendor, cloud-based mobile networks. The company is headquartered in San Mateo, California, with additional offices in Tewksbury, Massachusetts, and global R&D centers in several countries, including India, the UK, Japan, Italy, and Mexico. Altiostar's core product is its Open vRAN software, which virtualizes radio access baseband functions and supports open interfaces for equipment integration. This technology is designed to create scalable and cost-efficient mobile networks, disrupting traditional telecom markets. Altiostar primarily targets mobile network operators, enterprises, and governments, with notable deployments in Rakuten Mobile's network in Japan. The company also fosters partnerships among major operators to promote the adoption of open RAN infrastructure globally.

## What company datasets say Altiostar, A Rakuten Symphony Company raised

Funding, as reported

Reported in all **$303M** in dollars

Last round **Series C**

Last round size **$114M**

Last round date **May 2019**

## The company, in detail

What they build

Known for

information technology & services information technology telecommunications internet wireless services mobile

Built with from their website

Docker C++ Microsoft Windows OpenStack AI Veritas Linux Kubernetes

- **Sector:** Wireless
- **Industry code:** NAICS 51321, SIC 7372
- **Region:** California

## Wireless in United States

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