Ribbon Communications Inc. (RBBN)
RBBN moved a median of 0.00% 30 minutes after news, and 0.00% by the close. How RBBN actually reacts to news — the realized, point-in-time move the market made, measured across 358 labeled events over the last three years with zero look-ahead.
RBBN’s median reaction, across the day.
| Horizon | Median | % positive | Events |
|---|---|---|---|
| 5-min | 0.00% | 45% | 358 |
| 30-min | 0.00% | 44% | 358 |
| 60-min | 0.00% | 47% | 358 |
| to close | 0.00% | 46% | 358 |
| Middle 50% of RBBN reactions | -1.01% to +0.79% |
|---|---|
| Median reaction (30-min) | 0.00% |
| Measured reactions | 358 |
Half of all Ribbon Communications Inc. news events land between -1.01% and +0.79% at 30 minutes.
Reaction stats as of 2026-09-21. Newest measured event . Reaction = percent move vs. the price at the news timestamp.
How RBBN reacts, by analyst action.
| Event | Events | Median 30-min | % positive | Median to close |
|---|---|---|---|---|
| Analyst upgrades | 11 | -0.31% | 36% | -1.02% |
| Analyst downgrades | 19 | -0.56% | 26% | -1.12% |
| Rating reiterations | 26 | -1.58% | 15% | +0.32% |
Last 3 years, pulled 2026-09-21. Reaction = percent move vs. the price at the news timestamp. Counts and medians only. The same measurement runs across every name in the dataset. 3 further classes were observed with fewer than 10 measured events and are not published. See how RBBN ranks against every other measured name →
That’s how RBBN usually reacts — get an email when it moves on news →Email me when RBBN moves on news.
One email per qualifying move — the headline, the measured reaction, and how it compares to RBBN's baseline. Nothing else.
Recent RBBN events, each with its measured reaction.
| Date | Headline | Event | Source | 5-min | To close |
|---|---|---|---|---|---|
| Ribbon Communications to Report Third Quarter 2026 Financial Results on October 27, 2026 | Press release | PR Newswire | -1.00% | -2.67% | |
| Ribbon Achieves Critical Infrastructure Modernization Milestone Across North America's Largest Transportation Network | Press release | PR Newswire | +0.06% | -5.50% | |
| Ribbon and TNS Simplify Legacy Voice Switch Replacement | Press release | PR Newswire | -0.25% | -1.25% | |
| Ribbon Bolsters Its Market-Leading Critical Infrastructure Portfolio | Press release | PR Newswire | +0.50% | -0.76% | |
| Ribbon Attends Two Investor Conferences in August | Press release | PR Newswire | -0.23% | -0.94% | |
| Form 10-Q Ribbon Communications For: Jun 30 | SEC filing · Form 10-Q | SEC EDGAR | +0.23% | -0.23% | |
| Form 8-K Ribbon Communications For: Jul 28 | SEC filing · Form 8-K | SEC EDGAR | -3.52% | -3.52% | |
| Ribbon Communications Inc. Reports Second Quarter 2026 Financial Results | Press release | PR Newswire | -3.52% | -3.52% | |
| Ribbon's Optical and DCI Solutions Enable PT Jala Lintas Media (JLM) to Unlock Subsea and Metro Network Capacity Between Indonesia and Singapore | Press release | PR Newswire | +1.88% | +6.57% | |
| HubOne Selects Ribbon's PSX to Unify Voice Traffic Across Its Applications | Press release | PR Newswire | -1.83% | -1.38% | |
| Ribbon Communications to Report Second Quarter 2026 Financial Results on July 28, 2026 | Press release | PR Newswire | +2.13% | -6.81% | |
| MGW Partners with Ribbon to Modernize Infrastructure and Expand Rural Connectivity | Press release | PR Newswire | +0.00% | +4.46% | |
| Ribbon and Comporium Expand Partnership to Advance Voice Infrastructure Modernization | Press release | PR Newswire | +0.00% | -1.97% | |
| Form 8-K Ribbon Communications For: Jun 17 | SEC filing · Form 8-K | SEC EDGAR | +1.15% | -2.29% | |
| Ribbon Introduces Rapid Deployment Networking Solutions for Mobile Data Centers, Defense Agencies, and Critical Infrastructure Providers | Press release | PR Newswire | +0.00% | -8.90% | |
| Form 8-K Ribbon Communications For: Jun 03 | SEC filing · Form 8-K | SEC EDGAR | -0.17% | +0.70% | |
| Form SD Ribbon Communications | SEC filing · Form SD | SEC EDGAR | +0.59% | +1.31% | |
| Ribbon's Cloud Native Technology Partners with Agentforce Contact Center in the Public Cloud | Press release | PR Newswire | +1.89% | -0.76% | |
| Form 10-Q Ribbon Communications For: Mar 31 | SEC filing · Form 10-Q | SEC EDGAR | +0.00% | -0.19% | |
| Ribbon to Attend Key Investor Conferences | Press release | PR Newswire | -0.36% | -2.36% | |
| Form 8-K Ribbon Communications For: Apr 28 | SEC filing · Form 8-K | SEC EDGAR | -6.00% | -5.00% | |
| Ribbon Communications Announces Promotion of Rick Marmurek to Chief Financial Officer | Press release | PR Newswire | -6.00% | -5.00% | |
| Ribbon Communications Inc. Reports First Quarter 2026 Financial Results | Press release | PR Newswire | -6.00% | -5.00% | |
| Planters Broadband Selects Ribbon to Launch New 400G/800G- Ready Optical Route | Press release | PR Newswire | -0.97% | -11.29% | |
| Form ARS Ribbon Communications For: Dec 31 | SEC filing · Form ARS | SEC EDGAR | +0.36% | +1.44% | |
| Form DEF 14A Ribbon Communications For: Jun 03 | SEC filing · Form DEF | SEC EDGAR | +0.36% | +1.44% | |
| Form 8-K Ribbon Communications For: Apr 15 | SEC filing · Form 8-K | SEC EDGAR | +1.79% | +4.38% | |
| Ribbon Appoints Louis Silver to its Board of Directors | Press release | PR Newswire | +1.79% | +4.38% | |
| Ribbon Communications to Report First Quarter 2026 Financial Results on April 28, 2026 | Press release | PR Newswire | +2.25% | +1.12% | |
| CESNET and Ribbon Achieve Successful Proof of Concept in Quantum-Secured Optical Networking | Press release | PR Newswire | -1.22% | -3.64% | |
| Form 10-K Ribbon Communications For: Dec 31 | SEC filing · Form 10-K | SEC EDGAR | +0.44% | -0.22% | |
| Ribbon and AWS Transform Cloud Deployment for Service Providers and Enterprises | Press release | PR Newswire | -1.30% | -1.30% | |
| Ribbon Provides Edge Solutions for Salt's Enterprise Voice Expansion | Press release | PR Newswire | +0.45% | +2.46% | |
| Form 8-K Ribbon Communications For: Feb 05 | SEC filing · Form 8-K | SEC EDGAR | -9.52% | -6.67% | |
| Ribbon Communications Inc. Reports Fourth Quarter and Full Year 2025 Financial Results | Press release | PR Newswire | -9.52% | -6.67% | |
| Ribbon Communications to Report Fourth Quarter and Full Year 2025 Financial Results on February 5, 2026 | Press release | PR Newswire | +2.22% | +5.75% | |
| Nasstar Taps Ribbon to Power UK Voice Network Transformation for Cloud Era | Press release | PR Newswire | +0.69% | -1.38% | |
| Form S-8 Ribbon Communications | SEC filing · Form S-8 | SEC EDGAR | -0.99% | +0.66% | |
| Aircall Leverages Ribbon and AWS to Power Global Communications Connectivity | Press release | PR Newswire | -0.35% | -3.82% | |
| One NZ and Ribbon Partner to Deliver Cloud Native Voice Network | Press release | PR Newswire | +0.00% | +0.18% | |
| Seren Juno and RIBBON Achieve 20Tbps Transmission on 10,000 km JUNO Trans-Pacific Cable | Press release | PR Newswire | +1.43% | +2.15% | |
| Ribbon to Participate in Four Leading Investor Conferences Before Year-End | Press release | PR Newswire | +0.65% | -2.60% | |
| Seren Juno and Ribbon Achieve 20Tbps Transmission on 10,000 km JUNO Trans-Pacific Cable | Press release | PR Newswire | +0.91% | +1.25% | |
| Ribbon Communications Announces Inducement Equity Grants to Steve McCaffery and Don Toft Under Nasdaq Listing Rule 5635(c)(4) | Press release | PR Newswire | -0.30% | -0.30% | |
| Form 10-Q Ribbon Communications For: Sep 30 | SEC filing · Form 10-Q | SEC EDGAR | +0.51% | +5.67% | |
| Form 8-K Ribbon Communications For: Oct 22 | SEC filing · Form 8-K | SEC EDGAR | -5.33% | +1.17% | |
| Ribbon Communications Inc. Reports Third Quarter 2025 Financial Results | Press release | PR Newswire | -5.33% | +1.17% | |
| Ribbon Communications to Report Third Quarter 2025 Financial Results on October 22, 2025 | Press release | PR Newswire | +2.48% | +4.96% | |
| Ribbon Communications Held the First "Ribbon Workshop 2025", a Workshop for Customers and Partners | Press release | PR Newswire | +0.13% | -0.90% | |
| Ribbon Launches New AI Platform: Acumen™ for Autonomous Networking | Press release | PR Newswire | -0.77% | -1.80% |
Each reaction is the move the market actually made, measured from the news timestamp. Headlines link through to the RBBN section they belong to.
Where else RBBN is measured.
RBBN earnings → · Analyst actions → · SEC filings →
Other Communication Services names, measured the same way
| Ticker | Events | Median 30-min | % positive |
|---|---|---|---|
| Globalstar, Inc. (GSAT) | 364 | 0.00% | 47% |
| OTELCO (OTEL) | 362 | 0.00% | 38% |
| Cable One, Inc. (CABO) | 355 | -0.10% | 41% |
| FUSION TELECOM INTL (FSNN) | 355 | 0.00% | 41% |
Same sector, same measurement: percent move vs. the price at the news timestamp, read at 30 minutes. Sample sizes differ, so the medians are comparable but the confidence behind them is not.
All Communication Services names, measured the same way →
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Every name we’ve measured, in one place.
How the numbers are made.
How is Ribbon Communications Inc.'s median reaction calculated?
Every labeled RBBN news event is measured from its own timestamp: the last trade before the news is the base price, and the move is read at fixed horizons — 30 minutes of trading, then the close. The median across 358 events is what this page reports. Point-in-time, zero look-ahead: no event borrows information from a later one.
What counts as a positive reaction?
Any event whose price move is above zero at the horizon, relative to the last trade before the news timestamp. 44% of RBBN's measured events are up at 30 minutes; the rest close the window flat or negative.
How often is this page updated?
The news table refreshes automatically as new events are labeled and priced. The reaction medians are re-pulled in batches from the dataset — the figures here are as of 2026-09-21.
Does RBBN's past reaction predict its next one?
No. These are realized facts about past events, not forecasts. They describe a distribution — they say nothing certain about any future move.