Waters Corporation (WAT)
WAT moved a median of +0.05% 30 minutes after news, and -0.19% by the close. How WAT actually reacts to news — the realized, point-in-time move the market made, measured across 424 labeled events over the last three years with zero look-ahead.
WAT’s median reaction, across the day.
| Horizon | Median | % positive | Events |
|---|---|---|---|
| 5-min | -0.03% | 46% | 423 |
| 30-min | +0.05% | 53% | 424 |
| 60-min | -0.04% | 49% | 424 |
| to close | -0.19% | 47% | 423 |
| Middle 50% of WAT reactions | -0.61% to +0.61% |
|---|---|
| Median reaction (30-min) | +0.05% |
| Measured reactions | 424 |
Half of all Waters Corporation news events land between -0.61% and +0.61% at 30 minutes.
Reaction stats as of 2026-09-21. Newest measured event . Reaction = percent move vs. the price at the news timestamp.
How WAT reacts, by analyst action.
| Event | Events | Median 30-min | % positive | Median to close |
|---|---|---|---|---|
| Analyst upgrades | 51 | -0.28% | 45% | -0.04% |
| Analyst downgrades | 14 | -0.00% | 36% | -0.56% |
| Coverage initiations | 37 | +0.60% | 78% | +1.40% |
| Rating reiterations | 92 | -0.02% | 48% | -0.02% |
| Price-target raises | 31 | -0.01% | 48% | +0.24% |
| Price-target cuts | 22 | +0.00% | 50% | -0.27% |
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. See how WAT ranks against every other measured name →
That’s how WAT usually reacts — get an email when it moves on news →Email me when WAT moves on news.
One email per qualifying move — the headline, the measured reaction, and how it compares to WAT's baseline. Nothing else.
Recent WAT events, each with its measured reaction.
| Date | Headline | Event | Source | 5-min | To close |
|---|---|---|---|---|---|
| Waters Launches AI Link, Advancing AI-Enabled LC-MS Workflows from Research to Release | Press release | Canada Newswire | -0.65% | -1.34% | |
| Waters Corporation Schedules Third Quarter 2026 Earnings Conference Call | Press release | PR Newswire | -0.67% | -2.67% | |
| Waters Sets Benchmark for Standardized Spectral Flow Cytometry with Commercial Launch of BD FACSDiscover A7 Cell Analyzer | Press release | Canada Newswire | -0.88% | +0.00% | |
| Waters Corporation to Present at the J.P. Morgan U.S. All Stars Conference | Press release | PR Newswire | +0.81% | +0.46% | |
| Waters Corporation to Present at the Wells Fargo Healthcare Conference | Press release | PR Newswire | +1.25% | +1.08% | |
| Form 8-K WATERS CORP /DE/ For: Aug 17 | SEC filing · Form 8-K | SEC EDGAR | -0.18% | +2.51% | |
| Form 10-Q WATERS CORP /DE/ For: Jul 04 | SEC filing · Form 10-Q | SEC EDGAR | +1.25% | +1.75% | |
| Form 8-K WATERS CORP /DE/ For: Aug 04 | SEC filing · Form 8-K | SEC EDGAR | -1.04% | -0.53% | |
| Waters Corporation (NYSE: WAT) Reports Second Quarter 2026 Financial Results | Press release | PR Newswire | -1.04% | -0.53% | |
| Waters Launches Industry's Most Sensitive and Robust Clinical IVD System with Xevo TQ Absolute XR IVD Mass Spectrometer | Press release | Canada Newswire | -0.66% | -0.40% | |
| Waters Corporation Schedules Second Quarter 2026 Earnings Conference Call | Press release | PR Newswire | -0.31% | +0.21% | |
| Form 11-K WATERS CORP /DE/ For: Dec 31 | SEC filing · Form 11-K | SEC EDGAR | +0.09% | -0.93% | |
| IMU Biosciences Selects Waters to Advance Breakthrough AI Immune Mapping Platform to Transform Early Diagnosis, Monitoring, and Precision Medicine | Press release | Canada Newswire | +2.23% | +1.92% | |
| Waters Launches Coin Cell Differential Scanning Calorimeter (DSC) to Advance Battery Safety with Integrated Thermal, Evolved Gas, and Electrochemical Analysis | Press release | Canada Newswire | +1.20% | +0.64% | |
| Waters Launches Industry-First Reversed-Phase Bioseparation Columns to Deliver Up to 3x Faster GLP-1 Characterization and 2x Faster LNP Component Analysis | Press release | Canada Newswire | -0.68% | -1.83% | |
| Waters Announces FDA 510(k) Clearance of BD BACTEC FXI Culture System, Enabling Broader Access to Bloodstream Infection Diagnostics | Press release | Canada Newswire | +0.01% | +3.12% | |
| Waters Introduces Unrivaled Sensitivity and Speed to Benchtop HRMS with Xevo MRT P10 MS, Accelerating Multiomics Research | Press release | Canada Newswire | -0.85% | -1.21% | |
| Waters Unveils Cyclic IMS P20 MS: The New Benchmark in Structural and Spatial Omics | Press release | Canada Newswire | -0.85% | -1.21% | |
| Form SD WATERS CORP /DE/ | SEC filing · Form SD | SEC EDGAR | -0.85% | -1.21% | |
| Form 8-K WATERS CORP /DE/ For: May 21 | SEC filing · Form 8-K | SEC EDGAR | -0.14% | -0.12% | |
| Waters Corporation to Present at the Jefferies Global Healthcare Conference | Press release | PR Newswire | -0.30% | +0.34% | |
| Form 10-Q WATERS CORP /DE/ For: Apr 04 | SEC filing · Form 10-Q | SEC EDGAR | -0.59% | -4.38% | |
| Form 8-K WATERS CORP /DE/ For: May 05 | SEC filing · Form 8-K | SEC EDGAR | -0.17% | +0.81% | |
| Waters Corporation (NYSE: WAT) Reports First Quarter 2026 Financial Results | Press release | PR Newswire | -0.17% | +0.81% | |
| Waters Corporation Schedules First Quarter 2026 Earnings Conference Call | Press release | PR Newswire | -0.23% | -0.71% | |
| Waters Announces CE Mark for Next-Generation Fully Automated BD BACTEC FXI Culture System for Bloodstream Infection Diagnosis | Press release | PR Newswire | -0.22% | -1.68% | |
| Waters Debuts Industry-First Extended-Range MALS Detector for UHPLC/UPLC, Powering Rapid Characterization of Large Molecules | Press release | Canada Newswire | +0.06% | +1.58% | |
| Form ARS WATERS CORP /DE/ For: Dec 31 | SEC filing · Form ARS | SEC EDGAR | -0.79% | +0.14% | |
| Form DEF 14A WATERS CORP /DE/ For: May 21 | SEC filing · Form DEF | SEC EDGAR | -0.79% | +0.14% | |
| Form DEFA14A WATERS CORP /DE/ | SEC filing · Form DEFA14A | SEC EDGAR | -0.79% | +0.14% | |
| Waters Announces FDA Clearance of the Most Comprehensive At-Home Cervical Cancer Screening Tool, the Onclarity HPV Self-Collection Kit and FDA-Approved HPV Assay | Press release | PR Newswire | +1.53% | +0.98% | |
| Form 8-K WATERS CORP /DE/ For: Mar 23 | SEC filing · Form 8-K | SEC EDGAR | +0.51% | +1.39% | |
| Waters Prices Offering of Senior Notes | Press release | PR Newswire | +0.87% | +0.84% | |
| Form 8-K WATERS CORP /DE/ For: Mar 16 | SEC filing · Form 8-K | SEC EDGAR | +0.97% | +1.41% | |
| Form S-3ASR WATERS CORP /DE/ | SEC filing · Form S-3ASR | SEC EDGAR | +0.97% | +1.41% | |
| Waters Flagship ARES-G3 Rheometer Sets New Benchmark for Data Quality at Breakthrough Speed | Press release | PR Newswire | +0.31% | +2.01% | |
| Form 10-K WATERS CORP /DE/ For: Dec 31 | SEC filing · Form 10-K | SEC EDGAR | +1.68% | -0.37% | |
| Form S-8 WATERS CORP /DE/ | SEC filing · Form S-8 | SEC EDGAR | -0.16% | -0.89% | |
| Waters Corporation to Present at the TD Cowen Health Care Conference | Press release | PR Newswire | -0.16% | -0.89% | |
| Waters Introduces Next-Generation Microflow LC Columns with MaxPeak Premier Technology, Delivering Higher Sensitivity with Lower Sample and Solvent Usage | Press release | PR Newswire | -2.29% | +0.50% | |
| Form 8-K WATERS CORP /DE/ For: Feb 09 | SEC filing · Form 8-K | SEC EDGAR | +2.37% | -0.26% | |
| Waters Completes Combination with BD's Biosciences & Diagnostic Solutions Businesses | Press release | PR Newswire | +2.37% | -0.26% | |
| Waters Corporation (NYSE: WAT) Reports Fourth Quarter and Full-Year 2025 Financial Results | Press release | PR Newswire | +2.37% | -0.26% | |
| Form 8-K WATERS CORP /DE/ For: Jan 27 | SEC filing · Form 8-K | SEC EDGAR | -0.25% | -0.73% | |
| Waters Shareholders Approve Combination with BD's Biosciences & Diagnostic Solutions Business | Press release | PR Newswire | +0.17% | +0.57% | |
| Waters Corporation Schedules Fourth Quarter 2025 Earnings Conference Call | Press release | PR Newswire | -0.11% | -0.46% | |
| Form 8-K WATERS CORP /DE/ For: Jan 16 | SEC filing · Form 8-K | SEC EDGAR | -0.20% | +0.92% | |
| Form 8-K WATERS CORP /DE/ For: Jan 12 | SEC filing · Form 8-K | SEC EDGAR | +0.83% | -0.23% | |
| Form EFFECT WATERS CORP /DE/ | SEC filing · Form EFFECT | SEC EDGAR | +0.31% | -0.50% | |
| Waters Corporation to Present at the 44th Annual J.P. Morgan Healthcare Conference on Monday, January 12, 2026 | Press release | PR Newswire | -0.09% | +0.42% |
Each reaction is the move the market actually made, measured from the news timestamp. Headlines link through to the WAT section they belong to.
Where else WAT is measured.
WAT earnings → · Analyst actions → · SEC filings →
Other Healthcare names, measured the same way
| Ticker | Events | Median 30-min | % positive |
|---|---|---|---|
| Scholar Rock Holding Corporation (SRRK) | 425 | 0.00% | 49% |
| Koninklijke Philips N.V. NY Registry Shares (PHG) | 424 | +0.04% | 53% |
| Surgery Partners, Inc. (SGRY) | 423 | +0.04% | 52% |
| AMPLIPHI BIOSCIENCES CORP (APHB) | 422 | -0.98% | 32% |
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 Healthcare names, measured the same way →
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Every name we’ve measured, in one place.
How the numbers are made.
How is Waters Corporation's median reaction calculated?
Every labeled WAT 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 424 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. 53% of WAT'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 WAT'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.