NASDAQ: RBBN
Ribbon Communications Inc Stock

$2.56-0.05 (-1.92%)
Updated Jun 17, 2026
RBBN Price
$2.56
Fair Value Price
$4.89
Market Cap
$450.92M
52 Week Low
$1.80
52 Week High
$4.29
P/E
15.06x
P/B
1.08x
P/S
0.45x
PEG
N/A
Dividend Yield
N/A
Revenue
$825.88M
Earnings
$31.37M
Gross Margin
49.4%
Operating Margin
-1.91%
Profit Margin
3.8%
Debt to Equity
1.77
Operating Cash Flow
$33M
Beta
1.51
Next Earnings
Jul 22, 2026
Ex-Dividend
N/A
Next Dividend
N/A

RBBN Overview

Ribbon Communications Inc., established in 1997 and headquartered in Plano, Texas, is a global provider of advanced communication technology. Operating across the United States, Europe, the Middle East, Africa, and the Asia Pacific region, the company, formerly known as Sonus Networks, Inc. until its rebranding in November 2017, divides its operations into two primary segments: Cloud and Edge, and IP Optical Networks. The Cloud and Edge segment delivers software and hardware products, along with comprehensive solutions designed to enable modern voice and collaboration services. These include Voice over Internet Protocol (VoIP), Voice over Long-Term Evolution (VoLTE), Voice over 5G (VoNR), and Unified Communications and Collaboration (UC&C). Additionally, it offers Session Border Controller (SBC) technology and various network transformation tools. This segment's offerings cater to diverse infrastructures, spanning private, public, and hybrid cloud environments, data centers, enterprise premises, and service provider networks, with flexible deployment options available in-network, on-premises, or through a telco cloud. The IP Optical Networks segment focuses on hardware and software solutions for IP networking, switching, routing, and optical transport. These capabilities are essential for facilitating next-generation technologies like 5G and distributed cloud computing, along with their associated applications. Its robust portfolio includes 5G-native solutions for mobile backhaul, metro and edge aggregation, core networking, data center interconnect, and transport services for wholesale carriers, alongside addressing legacy network termination requirements. This segment serves a wide array of clients, including service providers, enterprises, and specific industries such as utilities, government, defense, finance, transportation, education, and research. Furthermore, it provides sophisticated analytics platforms, including cloud-native and streaming analytics, to offer deep insights into network and subscriber behavior.

Zen Rating

Our proven quant model uses 115 proprietary factors, including AI, to determine RBBN's potential to beat the market

CHold
  • Stocks with a Zen Rating of Hold (C) had an average return of +7.53% per year. Learn More

Zen Rating Component Grades

C
Zen Rating uses advanced AI algorithms that detect subtle patterns in market data; it anticipates future trends that point to superior stock price results.

Industry: Telecom

Industry Rating
C
RBBN
Ranked
#16 of 53

Top Ranked Stocks in Industry

Name / TickerPriceZen Rating
$17.38A
$26.45B
$53.83B
View Top Telecom Stocks

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RBBN News

Overview

Due Diligence Score

Industry Average (26)
You've viewed Due Diligence Score for 10/10 free stocks. Upgrade to Premium to see how RBBN scored across 33 valuation, financial, forecast, performance, and dividend due diligence checks.

Due Diligence Checks

RBBN ($2.56) is undervalued by 47.68% relative to our estimate of its Fair Value price of $4.89 based on Discounted Cash Flow (DCF) modelling, but does not have a significant margin of safety
Below Fair Value Valuation
RBBN ($2.56) is significantly undervalued by 47.68% relative to our estimate of its Fair Value price of $4.89 based on Discounted Cash Flow (DCF) modelling, which includes a healthy margin of safety
Significantly Below Fair Value Valuation
RBBN is forecast by analysts... subscribe to Premium to read more.
Below Benjamin Graham Formula Value Valuation
There are 30 more RBBN due diligence checks available for Premium users.

Valuation

RBBN fair value

Fair Value of RBBN stock based on Discounted Cash Flow (DCF)

Price
$2.56
Fair Value
$4.89
Undervalued by
47.68%
RBBN ($2.56) is undervalued by... subscribe to Premium to read more.
Below Fair Value Valuation
RBBN ($2.56) is significantly undervalued... subscribe to Premium to read more.
Significantly Below Fair Value Valuation
RBBN is forecast by analysts... subscribe to Premium to read more.
Below Benjamin Graham Formula Value Valuation

RBBN price to earnings (PE)

For valuing profitable companies with steady earnings

Company
15.06x
Industry
4.28x
Market
12.4x
RBBN is poor value based... subscribe to Premium to read more.
P/E vs Industry Valuation
RBBN is poor value based... subscribe to Premium to read more.
P/E vs Market Valuation

RBBN price to book (PB)

For valuing companies that are loss-making or have lots of physical asset

Company
1.08x
Industry
1.73x
RBBN is good value based... subscribe to Premium to read more.
P/B vs Industry Valuation

RBBN's financial health

Profit margin

Revenue
$162.6M
Net Income
-$34.5M
Profit Margin
-21.2%
RBBN's Earnings (EBIT) of -$15.80M... subscribe to Premium to read more.
Interest Coverage Financials
RBBN's profit margin has increased... subscribe to Premium to read more.
Profit Margin Growth Financials

Assets to liabilities

Assets
$1.2B
Liabilities
$740.6M
Debt to equity
1.77
RBBN's short-term assets ($408.50M) exceed... subscribe to Premium to read more.
Short-term Liabilities Financials
RBBN's long-term liabilities ($441.77M) exceed... subscribe to Premium to read more.
Long-term Liabilities Financials
RBBN's debt has increased relative... subscribe to Premium to read more.
Shrinking Debt Financials
RBBN's debt to equity ratio... subscribe to Premium to read more.
Healthy Debt to Equity Financials

Cash flow

Operating
-$22.0M
Investing
-$3.1M
Financing
-$3.1M
RBBN's operating cash flow ($32.94M)... subscribe to Premium to read more.
Debt Coverage Financials

RBBN vs Telecom Stocks

TickerZen RatingMarket Cap1d %P/EP/B
RBBNC$450.92M-1.92%15.06x1.08x
GOGOC$473.33M-2.51%29.17x4.01x
OOMAA$477.95M+0.12%52.67x4.98x
ATNIC$394.67M-3.75%-25.92x0.91x
OPTUF$595.59M-3.10%-0.13x-0.11x

Ribbon Communications Stock FAQ

What is Ribbon Communications's quote symbol?

(NASDAQ: RBBN) Ribbon Communications trades on the NASDAQ under the ticker symbol RBBN. Ribbon Communications stock quotes can also be displayed as NASDAQ: RBBN.

If you're new to stock investing, here's how to buy Ribbon Communications stock.

What is the 52 week high and low for Ribbon Communications (NASDAQ: RBBN)?

(NASDAQ: RBBN) Ribbon Communications's 52-week high was $4.29, and its 52-week low was $1.80. It is currently -40.33% from its 52-week high and 42.22% from its 52-week low.

How much is Ribbon Communications stock worth today?

(NASDAQ: RBBN) Ribbon Communications currently has 176,139,067 outstanding shares. With Ribbon Communications stock trading at $2.56 per share, the total value of Ribbon Communications stock (market capitalization) is $450.92M.

Ribbon Communications stock was originally listed at a price of $84.17 in May 25, 2000. If you had invested in Ribbon Communications stock at $84.17, your return over the last 26 years would have been -96.96%, for an annualized return of -12.57% (not including any dividends or dividend reinvestments).

How much is Ribbon Communications's stock price per share?

(NASDAQ: RBBN) Ribbon Communications stock price per share is $2.56 today (as of Jun 17, 2026).

What is Ribbon Communications's Market Cap?

(NASDAQ: RBBN) Ribbon Communications's market cap is $450.92M, as of Jun 18, 2026.

Market cap (market capitalization) is the total market value of a publicly traded company's outstanding shares.

Ribbon Communications's market cap is calculated by multiplying RBBN's current stock price of $2.56 by RBBN's total outstanding shares of 176,139,067.
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