NETSCOUT Systems vs Ribbon Communications
NETSCOUT Systems reported revenue of $860 million in fiscal 2026, about the same as Ribbon Communications' $845 million in fiscal 2025. NETSCOUT Systems' revenue grew 4.5% in its latest year, and Ribbon Communications' grew 1.3%. NETSCOUT Systems had an operating margin of 12.8%, against -0.4% at Ribbon Communications. Free cash flow was $285 million at NETSCOUT Systems and $26 million at Ribbon Communications. Their fiscal years end in different months (March 31 and December 31), so the periods don't line up exactly.
Side by side
| NETSCOUT Systems | Ribbon Communications | |
|---|---|---|
| Latest fiscal year | FY2026, Mar 31, 2026 | FY2025, Dec 31, 2025 |
| Revenue | $860M | $845M |
| Revenue growth | 4.5% | 1.3% |
| Revenue growth a year, last 5 years | 0.7% | 0.0% |
| Gross margin | 79.4% | 49.8% |
| Operating margin | 12.8% | −0.4% |
| Net margin | 11.1% | 4.7% |
| Free cash flow | $285M | $26M |
| Free cash flow margin | 33.2% | 3.1% |
| Return on capital | 8.6% | −0.4% |
| Net debt to EBITDA | −4.0x | 4.3x |
| Dividends and buybacks | $61M | $9M |
| Change in diluted share count | 2.4% | 3.3% |
| Last close | $31.51 | $1.35 |
| P/E at the last close | 18.0× | 6.1× |
| Insider trades, last 12 months | sold $2.4 million | — |
| Piotroski F-score | 7 of 9 | 6 of 9 |
Amounts in each company's own currency, US$ unless marked (a foreign company may report in another), each company's latest fiscal year from its 10-K, or 20-F or 40-F for a foreign company. Growth rates compare with the year before; the five-year rate is the average a year. Free cash flow is cash from operations minus capital spending; return on capital is after-tax operating income over the money invested in the business; P/E is the last close over the latest earnings per share. Banks are measured differently (return on equity, efficiency ratio), so some rows apply to one company only.
Ten years
Revenue
US$ billions, fiscal years
NETSCOUT SystemsRibbon Communications
Operating margin
Percent of revenue
NETSCOUT SystemsRibbon Communications
Free cash flow
US$ billions. Cash from operations minus capital expenditure.
NETSCOUT SystemsRibbon Communications
Source: the companies' Form 10-K filings, from SEC EDGAR, and the last close. For information only, not investment advice: the figures describe results, not which company is the better investment. The Filing Desk is not affiliated with either company. Full figures on the NETSCOUT Systems and Ribbon Communications pages.