Rocket Lab Corporation (RKLB)
RKLB moved a median of -0.25% 30 minutes after news, and 0.00% by the close. How RKLB actually reacts to news — the realized, point-in-time move the market made, measured across 1,360 labeled events over the last three years with zero look-ahead.
RKLB’s median reaction, across the day.
| Horizon | Median | % positive | Events |
|---|---|---|---|
| 5-min | +0.06% | 53% | 1,356 |
| 30-min | -0.25% | 45% | 1,359 |
| 60-min | -0.31% | 44% | 1,359 |
| to close | 0.00% | 50% | 1,354 |
| Middle 50% of RKLB reactions | -1.73% to +1.17% |
|---|---|
| Median reaction (30-min) | -0.25% |
| Measured reactions | 1,360 |
Half of all Rocket Lab Corporation news events land between -1.73% and +1.17% at 30 minutes.
Reaction stats as of 2026-09-21. Newest measured event . Reaction = percent move vs. the price at the news timestamp.
How RKLB reacts, by analyst action.
| Event | Events | Median 30-min | % positive | Median to close |
|---|---|---|---|---|
| Analyst upgrades | 27 | +0.61% | 67% | +2.46% |
| Coverage initiations | 41 | -0.30% | 46% | +1.08% |
| Rating reiterations | 127 | +0.33% | 60% | +0.90% |
| Price-target raises | 38 | -0.10% | 50% | +0.07% |
| Price-target cuts | 11 | +1.42% | 82% | +1.59% |
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 RKLB ranks against every other measured name →
That’s how RKLB usually reacts — get an email when it moves on news →Email me when RKLB moves on news.
One email per qualifying move — the headline, the measured reaction, and how it compares to RKLB's baseline. Nothing else.
Recent RKLB events, each with its measured reaction.
| Date | Headline | Event | Source | 5-min | To close |
|---|---|---|---|---|---|
| Rocket Lab Announces Date of Third Quarter 2026 Financial Results | Press release | GlobeNewswire | — | — | |
| Form 8-K Rocket Lab Corp For: Oct 14 | SEC filing · Form 8-K | SEC EDGAR | -4.46% | +2.30% | |
| Rocket Lab Provides Update on Neutron Development and Adjusts Target Launch Timing | Press release | GlobeNewswire | -4.46% | +2.30% | |
| Rocket Lab Secures Largest-Ever Electron Commercial Deal: 20-Launch Contract for Synspective | Press release | GlobeNewswire | -1.20% | -2.40% | |
| MISSION SUCCESS: Rocket Lab Launches 97th Electron Mission | Press release | GlobeNewswire | -0.10% | -1.47% | |
| Iridium Stockholders Approve Acquisition by Rocket Lab | Press release | GlobeNewswire | -0.69% | -0.42% | |
| MISSION SUCCESS: Rocket Lab Launches 96th Electron Mission | Press release | GlobeNewswire | +5.41% | +6.72% | |
| Form 8-K Rocket Lab Corp For: Sep 15 | SEC filing · Form 8-K | SEC EDGAR | +1.85% | -0.20% | |
| Rocket Lab Fully Funds Iridium Acquisition, Including Completion of $1.94 Billion ATM | Press release | GlobeNewswire | +1.85% | -0.20% | |
| Rocket Lab Successfully Launches 16th Electron Mission Of The Year, Solidifies Status as World’s Leading Small Launch Provider | Press release | GlobeNewswire | +0.39% | +1.08% | |
| Rocket Lab Introduces High-Efficiency Solar Cell to Reduce Reliance on Supply-Constrained Critical Minerals | Press release | GlobeNewswire | +0.00% | -6.22% | |
| MISSION SUCCESS: Rocket Lab Launches 94th Electron Mission | Press release | GlobeNewswire | -0.87% | +1.30% | |
| Form EFFECT Rocket Lab Corp | SEC filing · Form EFFECT | SEC EDGAR | -2.06% | +0.91% | |
| Form S-4/A Rocket Lab Corp | SEC filing · Form S-4 | SEC EDGAR | -2.08% | -4.14% | |
| MISSION SUCCESS: Rocket Lab Launches 93rd Electron Mission | Press release | GlobeNewswire | -0.33% | -0.97% | |
| Space Force Selects Rocket Lab For Space Data Network Consortium, Awarded $12M in Contracts to Support Global Military Communications Network | Press release | GlobeNewswire | -1.42% | -1.51% | |
| Rocket Lab Onboarded to U.S. Space Force’s $981M NITE-STAR Program to Advance Space Test and Training Infrastructure | Press release | GlobeNewswire | +0.76% | +0.79% | |
| Viasat Selects Rocket Lab to Build GEO Satellite for U.S. Space Force’s Protected Tactical SATCOM-Global Program | Press release | GlobeNewswire | +2.65% | +0.83% | |
| Rocket Lab Satellite Platforms Built for MDA Space Successfully Reach Orbit, Supporting Globalstar Direct-to-Device Communications Services | Press release | GlobeNewswire | +2.65% | +0.83% | |
| Form 8-K Rocket Lab Corp For: Aug 13 | SEC filing · Form 8-K | SEC EDGAR | +4.10% | +2.04% | |
| Form S-4 Rocket Lab Corp | SEC filing · Form S-4 | SEC EDGAR | +4.10% | +2.04% | |
| Rocket Lab Corporation Announces Dollar-for-Dollar Replacement At-The-Market Equity Program | Press release | GlobeNewswire | +4.10% | +2.04% | |
| Rocket Lab Corporation Announces Progress on Iridium Acquisition: HSR Period Lapses; Form S-4 Filed; FCC Applications Filed; Capital Strategy Underway | Press release | GlobeNewswire | +4.10% | +2.04% | |
| Rocket Lab Successfully Completes 92nd Electron Mission, 8th Launch for iQPS Earth-Imaging Constellation | Press release | GlobeNewswire | +3.08% | +4.36% | |
| Rocket Lab Awarded $397 Million Contract to Build and Launch Flatellites for U.S. Space Force’s Space-Based Airborne Moving Target Indicator Program | Press release | GlobeNewswire | -1.13% | -0.08% | |
| Rocket Lab Secures Multi-Launch Deal with iQPS for Three Dedicated Missions | Press release | GlobeNewswire | +0.38% | +6.21% | |
| Rocket Lab Awarded Record $266M Missile Defense Contract with U.S. Space Force for Suborbital Launches | Press release | GlobeNewswire | +3.07% | +3.38% | |
| Rocket Lab Announces Date of Second Quarter 2026 Financial Results | Press release | GlobeNewswire | +1.45% | +2.63% | |
| Rocket Lab Delivers Mission Success for Space Force: Completes Historic Launch and On-Orbit Satellite Tracking Mission in Record Time | Press release | GlobeNewswire | -0.88% | -3.64% | |
| Form 8-K Rocket Lab Corp For: Jun 28 | SEC filing · Form 8-K | SEC EDGAR | +3.48% | +7.18% | |
| Rocket Lab to Acquire Iridium in Historic Deal, Creating A Fully Vertically Integrated Space Powerhouse Primed for Growth | Press release | GlobeNewswire | +3.48% | +7.18% | |
| Rocket Lab Completes 10th Consecutive Launch with 100% Mission Success for Synspective | Press release | GlobeNewswire | -0.08% | +0.83% | |
| NASA Selects Rocket Lab to Launch Sun, Earth Sciences Missions | Press release | GlobeNewswire | +3.12% | +4.36% | |
| Rocket Lab Shatters Responsive Space Record: Launches U.S. Space Force VICTUS HAZE Mission in 16 Hours 42 Minutes | Press release | GlobeNewswire | +1.77% | -0.99% | |
| Rocket Lab To Join The Nasdaq-100 Index | Press release | GlobeNewswire | -7.92% | -13.21% | |
| Syntiant Appoints Adam Spice and David Lam to Board of Directors | Press release | GlobeNewswire | +0.01% | -0.51% | |
| Form 8-K Rocket Lab Corp For: Jun 03 | SEC filing · Form 8-K | SEC EDGAR | -2.46% | -0.83% | |
| Form SD Rocket Lab Corp | SEC filing · Form SD | SEC EDGAR | -1.24% | -7.55% | |
| Rocket Lab Achieves Milestone for Missile Defense Constellation, Passes System Requirements Review for SDA Tracking Layer Tranche 3 | Press release | GlobeNewswire | -2.99% | +0.15% | |
| Rocket Lab Adds Mars-Proven Robotics Capabilities with Completion of Motiv Space Systems Acquisition | Press release | GlobeNewswire | -2.99% | +0.15% | |
| Mission Success: Rocket Lab Completes 9th Electron Launch for Synspective | Press release | GlobeNewswire | +1.58% | +3.39% | |
| Form 8-K Rocket Lab Corp For: May 20 | SEC filing · Form 8-K | SEC EDGAR | +1.58% | +3.39% | |
| Rocket Lab Awarded $90M Contract to Build GEO Satellites Hosting Space Domain Awareness Payload for U.S. Space Force | Press release | GlobeNewswire | +1.58% | +3.39% | |
| Form 8-K Rocket Lab Corp For: May 20 | SEC filing · Form 8-K | SEC EDGAR | +0.52% | -0.62% | |
| Form DEFA14A Rocket Lab Corp | SEC filing · Form DEFA14A | SEC EDGAR | +5.90% | +4.29% | |
| Form 8-K Rocket Lab Corp For: May 08 | SEC filing · Form 8-K | SEC EDGAR | +3.79% | +11.26% | |
| Form 10-Q Rocket Lab Corp For: Mar 31 | SEC filing · Form 10-Q | SEC EDGAR | +4.74% | +22.63% | |
| Form 8-K Rocket Lab Corp For: May 07 | SEC filing · Form 8-K | SEC EDGAR | +4.74% | +22.63% | |
| Rocket Lab and Raytheon Selected To Demonstrate Advanced Capabilities For U.S. Space Force’s Space Based Interceptor Program | Press release | GlobeNewswire | +4.74% | +22.63% | |
| Rocket Lab Announces First Quarter 2026 Financial Results: Surpasses All Guidance Metrics Including Revenue, Margin, and Adjusted EBITDA; Posts Record $200M Quarterly Revenue and over $2.2B Backlog; Guides Another Record Revenue | Press release | GlobeNewswire | +4.74% | +22.63% |
Each reaction is the move the market actually made, measured from the news timestamp. Headlines link through to the RKLB section they belong to.
Where else RKLB is measured.
RKLB earnings → · Analyst actions → · SEC filings →
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How the numbers are made.
How is Rocket Lab Corporation's median reaction calculated?
Every labeled RKLB 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 1,360 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. 45% of RKLB'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 RKLB'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.