NetScout Systems, Inc. (NTCT)
NTCT moved a median of +0.10% 30 minutes after news, and +0.21% by the close. How NTCT actually reacts to news — the realized, point-in-time move the market made, measured across 360 labeled events over the last three years with zero look-ahead.
NTCT’s median reaction, across the day.
| Horizon | Median | % positive | Events |
|---|---|---|---|
| 5-min | +0.05% | 54% | 359 |
| 30-min | +0.10% | 54% | 360 |
| 60-min | +0.22% | 58% | 360 |
| to close | +0.21% | 60% | 358 |
| Middle 50% of NTCT reactions | -0.42% to +0.75% |
|---|---|
| Median reaction (30-min) | +0.10% |
| Measured reactions | 360 |
Half of all NetScout Systems, Inc. news events land between -0.42% and +0.75% at 30 minutes.
Reaction stats as of 2026-09-21. Newest measured event . Reaction = percent move vs. the price at the news timestamp.
Email me when NTCT moves on news.
One email per qualifying move — the headline, the measured reaction, and how it compares to NTCT's baseline. Nothing else.
Recent NTCT events, each with its measured reaction.
| Date | Headline | Event | Source | 5-min | To close |
|---|---|---|---|---|---|
| High-Capacity DDoS Attacks Surge 1,286% in 1H 2026 According to NETSCOUT Threat Intelligence Research | Press release | Business Wire | +0.40% | -2.57% | |
| NETSCOUT Accelerates Problem Solving With Conversational AI | Press release | Business Wire | +0.01% | -1.24% | |
| NETSCOUT Adds MCP Connectivity, Putting AI-Ready Smart Data Directly Into the Hands of AI Assistants and Agents | Press release | Business Wire | -0.19% | +0.18% | |
| Form 8-K NETSCOUT SYSTEMS INC For: Sep 09 | SEC filing · Form 8-K | SEC EDGAR | -0.15% | +0.21% | |
| Form S-8 NETSCOUT SYSTEMS INC | SEC filing · Form S-8 | SEC EDGAR | -0.15% | +0.21% | |
| NETSCOUT Data Platform Transforms AI-Driven Network Operations and Controls Costs | Press release | Business Wire | -2.26% | -0.42% | |
| NETSCOUT to Participate in 9th Annual B. Riley Securities Consumer & TMT Conference | Press release | Business Wire | +0.53% | +1.44% | |
| NETSCOUT Closes Critical CDN Security Gap to Safeguard Essential Digital Services | Press release | Business Wire | +0.46% | -0.08% | |
| NETSCOUT Extends Adaptive DDoS Defense Protection to Address the Rising Business Cost of Weaponized Broadband and IoT Devices | Press release | Business Wire | +0.17% | +0.72% | |
| Form 10-Q NETSCOUT SYSTEMS INC For: Jun 30 | SEC filing · Form 10-Q | SEC EDGAR | +1.18% | -3.63% | |
| Form 8-K NETSCOUT SYSTEMS INC For: Aug 06 | SEC filing · Form 8-K | SEC EDGAR | -3.81% | +1.93% | |
| NETSCOUT Reports First Quarter Fiscal Year 2027 Financial Results | Press release | Business Wire | -3.81% | +1.93% | |
| Form ARS NETSCOUT SYSTEMS INC For: Mar 31 | SEC filing · Form ARS | SEC EDGAR | +0.44% | -1.62% | |
| Form DEF 14A NETSCOUT SYSTEMS INC For: Sep 09 | SEC filing · Form DEF | SEC EDGAR | +0.44% | -1.62% | |
| Form DEFA14A NETSCOUT SYSTEMS INC | SEC filing · Form DEFA14A | SEC EDGAR | +0.44% | -1.62% | |
| NETSCOUT Strengthens Operational Resilience of Critical Infrastructure Against AI-Driven, Internet-Scale DDoS Attacks | Press release | Business Wire | -0.43% | +0.28% | |
| NETSCOUT to Report First Quarter Fiscal Year 2027 Financial Results on August 6th | Press release | Business Wire | -0.17% | -2.67% | |
| NETSCOUT Reaches Innovation Milestone With 750th Patent | Press release | Business Wire | +0.17% | +2.66% | |
| Form 8-K NETSCOUT SYSTEMS INC For: May 28 | SEC filing · Form 8-K | SEC EDGAR | -1.13% | +1.18% | |
| Form SD NETSCOUT SYSTEMS INC | SEC filing · Form SD | SEC EDGAR | +0.73% | +2.19% | |
| Form 10-K NETSCOUT SYSTEMS INC For: Mar 31 | SEC filing · Form 10-K | SEC EDGAR | +0.36% | +0.16% | |
| Form 8-K NETSCOUT SYSTEMS INC For: May 07 | SEC filing · Form 8-K | SEC EDGAR | -0.42% | +0.58% | |
| NETSCOUT Reports Fourth Quarter and Full Fiscal Year 2026 Financial Results | Press release | Business Wire | -0.42% | +0.58% | |
| NETSCOUT to Participate in Upcoming Investor Conferences | Press release | Business Wire | -0.75% | -0.84% | |
| NETSCOUT to Report Q4 and Full Fiscal Year 2026 Financial Results on May 7th | Press release | Business Wire | -0.60% | -1.07% | |
| NETSCOUT Reveals Qualitative Shifts in DDoS Attack Sophistication, Infrastructure Capacity, and Threat Actor Capabilities | Press release | Business Wire | +0.22% | +2.75% | |
| NETSCOUT Delivers AI-Ready Smart Data for Communications Service Providers | Press release | Business Wire | +0.03% | +1.57% | |
| Form 10-Q NETSCOUT SYSTEMS INC For: Dec 31 | SEC filing · Form 10-Q | SEC EDGAR | -0.04% | +0.73% | |
| Form 8-K NETSCOUT SYSTEMS INC For: Feb 05 | SEC filing · Form 8-K | SEC EDGAR | +0.42% | +1.77% | |
| NETSCOUT Reports Third Quarter Fiscal Year 2026 Financial Results | Press release | Business Wire | +0.42% | +1.77% | |
| NETSCOUT Enhances Resiliency and Responsiveness With New Observability Capabilities | Press release | Business Wire | +0.07% | +0.32% | |
| NETSCOUT Ensures Optimal Customer Experiences for 5G Network Slicing Services | Press release | Business Wire | +1.25% | +0.90% | |
| NETSCOUT to Report Q3 FY’26 Financial Results on February 5th | Press release | Business Wire | +1.25% | +0.90% | |
| NETSCOUT Receives Frost & Sullivan's 2025 Global Company of the Year Recognition for Network Monitoring Leadership | Press release | PR Newswire | -0.51% | +0.11% | |
| NETSCOUT to Participate in Upcoming Investor Conferences | Press release | Business Wire | +0.38% | +0.29% | |
| Form 10-Q NETSCOUT SYSTEMS INC For: Sep 30 | SEC filing · Form 10-Q | SEC EDGAR | -2.44% | -1.10% | |
| Form 8-K NETSCOUT SYSTEMS INC For: Nov 06 | SEC filing · Form 8-K | SEC EDGAR | -3.37% | -2.50% | |
| NETSCOUT Reports Second Quarter Fiscal Year 2026 Financial Results | Press release | Business Wire | -3.37% | -2.50% | |
| NETSCOUT Extends Visibility Into Kubernetes Containers With Continuous Observability Innovation | Press release | Business Wire | +0.77% | +5.77% | |
| NETSCOUT Extends Visibility Into Kubernetes Containers With Continuous Observability Innovation | Press release | Business Wire | -0.11% | +0.04% | |
| NETSCOUT to Report Q2 FY’26 Financial Results on November 6th | Press release | Business Wire | -0.72% | -2.42% | |
| NETSCOUT Helps Reduce Fiber-to-the-Home Costs and Customer Churn | Press release | Business Wire | +0.72% | +0.12% | |
| Form 8-K NETSCOUT SYSTEMS INC For: Sep 10 | SEC filing · Form 8-K | SEC EDGAR | -0.24% | +1.24% | |
| Form S-8 NETSCOUT SYSTEMS INC | SEC filing · Form S-8 | SEC EDGAR | -0.24% | +1.24% | |
| New NETSCOUT Research Confirms DDoS Continues to Dominate the Digital Battlefield, Destabilizing Critical Infrastructure | Press release | Business Wire | +0.38% | +3.77% | |
| NETSCOUT Releases 2025 Environmental, Social, and Governance Report | Press release | Business Wire | -0.35% | -1.84% | |
| Form 10-Q NETSCOUT SYSTEMS INC For: Jun 30 | SEC filing · Form 10-Q | SEC EDGAR | +0.84% | +0.89% | |
| Form 8-K NETSCOUT SYSTEMS INC For: Aug 07 | SEC filing · Form 8-K | SEC EDGAR | -2.41% | -0.56% | |
| NETSCOUT Reports First Quarter Fiscal Year 2026 Financial Results | Press release | Business Wire | -2.41% | -0.56% | |
| NETSCOUT Empowers Customers to Defeat Cyberthreats With AI-Powered DDoS Defense | Press release | Business Wire | +0.33% | -0.60% |
Each reaction is the move the market actually made, measured from the news timestamp. Headlines link through to the NTCT section they belong to.
Where else NTCT is measured.
NTCT earnings → · Analyst actions → · SEC filings →
Other Technology names, measured the same way
| Ticker | Events | Median 30-min | % positive |
|---|---|---|---|
| NXP Semiconductors N.V. (NXPI) | 363 | +0.07% | 53% |
| Verint Systems Inc. (VRNT) | 362 | +0.06% | 57% |
| Rambus, Inc. (RMBS) | 360 | -0.20% | 44% |
| HealthStream, Inc. (HSTM) | 359 | +0.09% | 53% |
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.
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How the numbers are made.
How is NetScout Systems, Inc.'s median reaction calculated?
Every labeled NTCT 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 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. 54% of NTCT'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 NTCT'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.