Ribbon Communications Inc. (RBBN) stock
Close on Nov 11, 2026Market cap $263.39MP/E 29.4Yield –
Ribbon Communications Inc. reported revenue of $1.24B for the twelve months to Sep 30, 2026. Free cash flow was -$14.64M. At the latest close the market valued the company at $263.39M, 29.4 times its earnings.
Key statistics
Valuation at the latest close; fundamentals over the trailing twelve months, balances at Sep 30, 2026
Valuation
- Market cap
- $263.39M
- P/E ratio
- 29.4
- Price to sales
- –
- Price to book
- 0.67
- Dividend yield
- –
- Free cash flow yield
- 2.79%
Fundamentals
- Revenue
- $1.24B
- Net income
- -$4.61M
- EPS, diluted
- -$0.06
- Free cash flow
- -$14.64M
- Book value per share
- $2.19
- Diluted shares
- 177M
Trading
- Next earnings
- Feb 4, 2027 (estimated, during market hours)
- Previous close
- $1.40
- Open
- $1.43
- Day's range
- $1.42 – $1.47
- Volume
- 332,590
- Average volume (20 days)
- 1,345,030
- Index membership
- Russell 2000, Russell 3000
- Beta (5 years)
- 1.34
- 52-week range
- $1.28 – $3.41
- RSI (14 days)
- 46.6
- Volatility (1 year)
- 67.6%
- Relative volume
- 0.32×
- WACC
- 8.2%
Index membership is inferred from the holdings of funds that track each index (IWM, IWV), as reported to the SEC for Jun 30, 2026. Join dates come from quarterly fund reports since 2019, so they are accurate to the quarter.
Market cap history
Month-end market cap since 2016, using shares outstanding reported at the time
Total return vs. the S&P 500
Price change plus reinvested dividends, to the close on Nov 11, 2026. The S&P 500 is measured by the SPY fund.
| Period | RBBN | S&P 500 | Difference | RBBN per year | S&P 500 per year |
|---|---|---|---|---|---|
| 1 month | -13.5% | -2.4% | −11.1 pts | ||
| 3 months | -26.1% | -1.2% | −25.0 pts | ||
| Year to date | -49.0% | +12.3% | −61.3 pts | ||
| 1 year | -53.8% | +12.4% | −66.2 pts | ||
| 3 years | -26.5% | +78.8% | −105.3 pts | -9.8% | +21.4% |
| 5 years | -75.7% | +75.2% | −150.8 pts | -24.6% | +11.9% |
| 10 years | -76.7% | +311.1% | −387.8 pts | -13.5% | +15.2% |
Twelve years at a glance
Fiscal years 2014 to 2025 and trailing twelve months, USD
Revenue
Gross profit
Operating income
Net income
EPS, diluted
Free cash flow
Press releases
Releases Ribbon Communications filed with the SEC as exhibits to Form 8-K or 6-K
- Results
- Results
- Update
- Results
- Results
- Results
About Ribbon Communications
Services-Computer Integrated Systems Design
Ribbon provides communications technology, networking solutions, and related software and hardware products. The company operates through two business segments: Cloud and Edge, and IP Optical Networks. Its Cloud and Edge segment offers voice communications, session border controllers, network transformation products, and operations automation software. The IP Optical Networks segment supplies optical transport systems, packet switching, and IP routing solutions. The company sells to communications service providers, mobile carriers, and cable operators, as well as enterprises in sectors such as government, defense, finance, education, transportation, and utilities.
Company profile, executives and historyRibbon Communications stock: common questions
What is Ribbon Communications's stock price?
RBBN closed at $1.47 on Nov 11, 2026, up 5.00% on the day. Over the past 52 weeks it traded between $1.28 and $3.41.
What is Ribbon Communications's market cap?
Ribbon Communications was worth $263.39M at the close on Nov 11, 2026: the share price times the diluted shares outstanding.
What is RBBN's P/E ratio?
RBBN trades at 29.4 times earnings, based on diluted earnings per share of -$0.06 over the twelve months to Sep 30, 2026.
How much revenue does Ribbon Communications make?
Ribbon Communications reported revenue of $1.24B for the twelve months to Sep 30, 2026.
Does Ribbon Communications pay a dividend?
No. Ribbon Communications has not paid a cash dividend over the last twelve months.
When does Ribbon Communications report earnings next?
Ribbon Communications is expected to report Q4 FY2026 results on Feb 4, 2027, during market hours. The date is estimated from its past reporting pattern until the company confirms it.
How has RBBN stock performed over the past year?
Including dividends, RBBN returned -53.8% over the past year, against +12.4% for the S&P 500.
How many RBBN shares are sold short?
5M shares were sold short at the latest FINRA report, 4.26% of the float, or 3.6 days of average trading volume.
Who are Ribbon Communications's competitors?
Companies most similar to Ribbon Communications by business, industry and size include NTCT, IOT, IONQ, UIS, BAND.
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