Rubrik, Inc. Class A (RBRK)
RBRK moved a median of -0.07% 30 minutes after news, and -0.29% by the close. How RBRK actually reacts to news — the realized, point-in-time move the market made, measured across 389 labeled events over the last three years with zero look-ahead.
RBRK’s median reaction, across the day.
| Horizon | Median | % positive | Events |
|---|---|---|---|
| 5-min | +0.05% | 53% | 384 |
| 30-min | -0.07% | 49% | 384 |
| 60-min | -0.07% | 47% | 384 |
| to close | -0.29% | 47% | 380 |
| Middle 50% of RBRK reactions | -1.30% to +1.21% |
|---|---|
| Median reaction (30-min) | -0.07% |
| Measured reactions | 389 |
Half of all Rubrik, Inc. Class A news events land between -1.30% and +1.21% at 30 minutes.
Reaction stats as of 2026-09-21. Newest measured event . Reaction = percent move vs. the price at the news timestamp.
How RBRK reacts, by analyst action.
| Event | Events | Median 30-min | % positive | Median to close |
|---|---|---|---|---|
| Analyst upgrades | 23 | -1.24% | 35% | -1.63% |
| Coverage initiations | 69 | -0.89% | 30% | -1.22% |
| Rating reiterations | 214 | -0.52% | 35% | -1.00% |
| Price-target raises | 66 | -0.23% | 39% | -0.60% |
| Price-target cuts | 19 | -0.51% | 21% | +0.86% |
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. 1 further class was observed with fewer than 10 measured events and is not published. See how RBRK ranks against every other measured name →
That’s how RBRK usually reacts — get an email when it moves on news →Email me when RBRK moves on news.
One email per qualifying move — the headline, the measured reaction, and how it compares to RBRK's baseline. Nothing else.
Recent RBRK events, each with its measured reaction.
| Date | Headline | Event | Source | 5-min | To close |
|---|---|---|---|---|---|
| Rubrik Adds New MCP Support to Expand Access to Agentic Cyber Resilience | Press release | Business Wire | -0.11% | +4.58% | |
| Rubrik Unveils Rubrik Code Guardian, Harnessing Anthropic’s Claude Mythos 5 to Red-Team Code and Prioritize Cyber Risks | Press release | Business Wire | -0.82% | +3.87% | |
| Rubrik Launches Lakehouse Protection with Apache Iceberg Data on AWS | Press release | Business Wire | -1.77% | -1.76% | |
| Form 10-Q Rubrik, Inc. For: Jul 31 | SEC filing · Form 10-Q | SEC EDGAR | +1.06% | -3.60% | |
| Rubrik and CrowdStrike Bring Agentic Automation to Identity Attack Resilience | Press release | Business Wire | -0.82% | -2.04% | |
| Form 8-K Rubrik, Inc. For: Aug 26 | SEC filing · Form 8-K | SEC EDGAR | +4.49% | -5.96% | |
| Rubrik Appoints Rakefet Russak-Aminoach to its Board of Directors | Press release | Business Wire | +4.49% | -5.96% | |
| Rubrik Reports Second Quarter Fiscal Year 2027 Financial Results | Press release | Business Wire | +4.49% | -5.96% | |
| Rubrik to Present at Goldman Sachs Communacopia + Technology Conference | Press release | Business Wire | +4.49% | -5.96% | |
| Rubrik to Report Second Quarter Fiscal 2027 Financial Results on August 27, 2026 | Press release | Business Wire | +0.15% | +3.36% | |
| Rubrik Unveils Agent Identity to Secure Agentic Actions in Real-Time | Press release | Business Wire | +2.22% | +6.55% | |
| Cloud Security Alliance Launches AI Resilience Center of Excellence | Press release | Business Wire | +1.04% | +2.24% | |
| Rubrik Joins Internet2 to Advance Cyber Resilience and AI Operations in Higher Education | Press release | Business Wire | +0.72% | +6.38% | |
| Rubrik Announces £375 Million UK Investment and Names London as EMEA Headquarters | Press release | Business Wire | +2.00% | +7.32% | |
| Rubrik Security Cloud Launches on the AWS European Sovereign Cloud | Press release | Business Wire | +0.31% | -2.03% | |
| Rubrik Joins Coalition for Health AI (CHAI) to Advance Responsible AI in Health | Press release | Business Wire | -0.78% | -2.39% | |
| Rubrik is Named a Leader in the 2026 Gartner® Magic Quadrant™ | Press release | Business Wire | +0.19% | +1.11% | |
| AI agents are breaking things and organisations know it. They are deploying more anyway. | Press release | PR Newswire | -1.60% | -1.84% | |
| Rubrik Announces Upcoming Integration with Amazon Bedrock AgentCore to Secure AI Agents | Press release | Business Wire | +0.00% | -1.62% | |
| Rubrik Appoints Amit Nehru to Lead Global System Integrators and Managed Service Provider Business | Press release | Business Wire | +0.24% | -0.46% | |
| Rubrik’s “To Catch a Thief” by Nicole Perlroth Wins a Tribeca X Award for Best Audio/Podcast | Press release | Business Wire | -2.98% | +0.36% | |
| Global Systems Integrators Partner with Rubrik to Deliver Rubrik Agent Cloud for Anthropic's Claude Code | Press release | Business Wire | +0.06% | +1.60% | |
| Rubrik Advances Identity Resilience Through Strata Acquisition and Identity Roll Forward Innovation | Press release | Business Wire | +0.06% | +1.60% | |
| Rubrik Introduces Autonomous Business Recovery Solution for Cloud Applications | Press release | Business Wire | +0.06% | +1.60% | |
| Rubrik Launches Rubrik Agent Cloud for Anthropic's Claude Code | Press release | Business Wire | +0.06% | +1.60% | |
| Rubrik Now Available as AI Agent | Press release | Business Wire | +0.06% | +1.60% | |
| Rubrik Releases Next Season of Acclaimed “To Catch a Thief” by Nicole Perlroth, Podcast Documentary Details Current Threats from North Korea | Press release | Business Wire | -0.04% | +0.60% | |
| Rubrik Unlocks AI on Unstructured Data | Press release | Business Wire | +0.06% | +1.60% | |
| Form 10-Q Rubrik, Inc. For: Apr 30 | SEC filing · Form 10-Q | SEC EDGAR | -1.32% | -2.27% | |
| Form 8-K Rubrik, Inc. For: Jun 03 | SEC filing · Form 8-K | SEC EDGAR | -1.32% | -2.27% | |
| Form 8-K Rubrik, Inc. For: Jun 04 | SEC filing · Form 8-K | SEC EDGAR | -4.03% | -4.66% | |
| Rubrik Reports First Quarter Fiscal Year 2027 Financial Results | Press release | Business Wire | -4.03% | -4.66% | |
| Rubrik Stages All-Star Lineup at Forward 2026 Las Vegas | Press release | Business Wire | -1.96% | -0.80% | |
| Rubrik Gains Access to Anthropic Mythos Research Preview to Advance Cyber Resilience | Press release | Business Wire | +0.29% | +1.10% | |
| Sophos and Rubrik Make Microsoft 365 Backup and Recovery, Powered by Rubrik Cyber Resilience, Available to Sophos Customers Worldwide | Press release | GlobeNewswire | +2.04% | +6.67% | |
| Rubrik Offers Unified Cloud and On-Premises Cyber Resilience Solution for MEDITECH Healthcare Customers | Press release | Business Wire | -2.15% | -3.26% | |
| Rubrik to Report First Quarter Fiscal 2027 Financial Results on June 4, 2026 | Press release | Business Wire | +0.64% | +0.80% | |
| Rubrik Launches Community for the Cyber Resilience Front Line | Press release | Business Wire | +0.17% | +0.11% | |
| Rubrik Announces Cyber Resilience for Google Cloud SQL | Press release | Business Wire | -0.33% | +0.73% | |
| Rubrik Secures and Accelerates AI Agents on Google Cloud | Press release | Business Wire | -0.33% | +0.73% | |
| As Agentic AI Adoption Accelerates, Rubrik Warns of Growing Security Gaps | Press release | Business Wire | +0.35% | -2.11% | |
| Form ARS Rubrik, Inc. For: Jan 31 | SEC filing · Form ARS | SEC EDGAR | +0.35% | -2.11% | |
| Form DEF 14A Rubrik, Inc. For: Apr 15 | SEC filing · Form DEF | SEC EDGAR | +0.35% | -2.11% | |
| Form DEFA14A Rubrik, Inc. | SEC filing · Form DEFA14A | SEC EDGAR | +0.35% | -2.11% | |
| Rubrik Selected as an AHA Preferred Provider for Cybersecurity Resiliency | Press release | Business Wire | +0.07% | -6.20% | |
| New Microsoft and Rubrik Integration Delivers Complete Identity Attack Response | Press release | Business Wire | -0.15% | +2.85% | |
| Rubrik Rolls Out Industry’s First Semantic AI Governance Engine | Press release | Business Wire | -0.15% | +2.85% | |
| Form 10-K Rubrik, Inc. For: Jan 31 | SEC filing · Form 10-K | SEC EDGAR | -1.85% | -3.16% | |
| Form S-8 Rubrik, Inc. | SEC filing · Form S-8 | SEC EDGAR | -1.85% | -3.16% | |
| Rubrik Data Protection for Google Workspace Helps Enterprise Customers Achieve End-to-End Cyber Resilience | Press release | Business Wire | +0.58% | -2.08% |
Each reaction is the move the market actually made, measured from the news timestamp. Headlines link through to the RBRK section they belong to.
Where else RBRK is measured.
RBRK earnings → · Analyst actions → · SEC filings →
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How the numbers are made.
How is Rubrik, Inc. Class A's median reaction calculated?
Every labeled RBRK 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 389 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. 49% of RBRK'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 RBRK'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.