Amrize Ltd Ordinary Shares (AMRZ)
AMRZ moved a median of +0.02% 30 minutes after news, and +0.06% by the close. How AMRZ actually reacts to news — the realized, point-in-time move the market made, measured across 135 labeled events over the last three years with zero look-ahead.
AMRZ’s median reaction, across the day.
| Horizon | Median | % positive | Events |
|---|---|---|---|
| 5-min | 0.00% | 48% | 124 |
| 30-min | +0.02% | 52% | 131 |
| 60-min | 0.00% | 50% | 131 |
| to close | +0.06% | 53% | 131 |
| Middle 50% of AMRZ reactions | -0.27% to +0.41% |
|---|---|
| Median reaction (30-min) | +0.02% |
| Measured reactions | 135 |
Half of all Amrize Ltd Ordinary Shares news events land between -0.27% and +0.41% at 30 minutes.
Reaction stats as of 2026-09-21. Newest measured event . Reaction = percent move vs. the price at the news timestamp.
How AMRZ reacts, by analyst action.
| Event | Events | Median 30-min | % positive | Median to close |
|---|---|---|---|---|
| Analyst upgrades | 11 | -0.32% | 27% | -1.62% |
| Analyst downgrades | 26 | +0.36% | 62% | -0.29% |
| Coverage initiations | 30 | +0.22% | 53% | +0.39% |
| Rating reiterations | 42 | +0.07% | 52% | +0.14% |
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. 2 further classes were observed with fewer than 10 measured events and are not published. See how AMRZ ranks against every other measured name →
That’s how AMRZ usually reacts — get an email when it moves on news →Email me when AMRZ moves on news.
One email per qualifying move — the headline, the measured reaction, and how it compares to AMRZ's baseline. Nothing else.
Recent AMRZ events, each with its measured reaction.
| Date | Headline | Event | Source | 5-min | To close |
|---|---|---|---|---|---|
| Amrize Announces Date for Third Quarter 2026 Financial Results | Press release | Business Wire | +0.36% | +0.11% | |
| Amrize Appoints Mario Gross as President of Building Envelope | Press release | Business Wire | +1.01% | -0.76% | |
| Form 8-K Amrize Ltd For: Sep 06 | SEC filing · Form 8-K | SEC EDGAR | +1.01% | -0.76% | |
| Form 8-K Amrize Ltd For: Aug 28 | SEC filing · Form 8-K | SEC EDGAR | +0.28% | +3.07% | |
| Amrize Appoints Sam Poletti as Chief Financial Officer | Press release | Business Wire | -1.17% | -0.41% | |
| Form 8-K Amrize Ltd For: Aug 24 | SEC filing · Form 8-K | SEC EDGAR | -1.17% | -0.41% | |
| Amrize Reports Second Quarter 2026 Results | Press release | Business Wire | +0.03% | -1.81% | |
| Form 8-K Amrize Ltd For: Aug 06 | SEC filing · Form 8-K | SEC EDGAR | +0.03% | -1.81% | |
| Amrize to Acquire Rapid Redi-Mix in Dallas-Fort Worth | Press release | Business Wire | -0.82% | -2.87% | |
| Amrize Announces Date for Second Quarter 2026 Financial Results | Press release | Business Wire | +0.57% | +0.81% | |
| Amrize to Modernize Montreal Area Cement Plant to be Most Advanced in Eastern Canada | Press release | Business Wire | +0.00% | +1.05% | |
| Form 10-Q Amrize Ltd For: Mar 31 | SEC filing · Form 10-Q | SEC EDGAR | -0.60% | -1.40% | |
| Amrize Launches $1 Billion Share Buyback Program | Press release | Business Wire | -0.40% | +1.97% | |
| Amrize Grows Revenue 4.7% in First Quarter and Reaffirms 2026 Guidance | Press release | Business Wire | -1.72% | -2.48% | |
| Form 8-K Amrize Ltd For: Apr 29 | SEC filing · Form 8-K | SEC EDGAR | -1.72% | -2.48% | |
| Amrize Shareholders Approve All Proposals at 2026 Annual General Meeting | Press release | Business Wire | -0.18% | -1.07% | |
| Form 8-K Amrize Ltd For: Apr 21 | SEC filing · Form 8-K | SEC EDGAR | -0.18% | -1.07% | |
| Amrize Expands ‘Made in America’ Label to Nine U.S. Cement Plants | Press release | Business Wire | -0.59% | -1.46% | |
| Form 8-K Amrize Ltd For: Apr 14 | SEC filing · Form 8-K | SEC EDGAR | -1.00% | -2.00% | |
| Amrize Announces Date for First Quarter 2026 Financial Results | Press release | Business Wire | -0.24% | +0.37% | |
| Amrize Appoints Baris Oran as Chief Financial Officer | Press release | Business Wire | -0.69% | -2.04% | |
| Form 8-K Amrize Ltd For: Mar 31 | SEC filing · Form 8-K | SEC EDGAR | -0.69% | -2.04% | |
| Amrize Publishes Annual Report for Fiscal Year 2025 | Press release | Business Wire | +0.00% | +0.16% | |
| Form ARS Amrize Ltd For: Dec 31 | SEC filing · Form ARS | SEC EDGAR | +0.00% | +0.16% | |
| Form DEF 14A Amrize Ltd For: Apr 21 | SEC filing · Form DEF | SEC EDGAR | +0.00% | +0.16% | |
| Form DEFA14A Amrize Ltd | SEC filing · Form DEFA14A | SEC EDGAR | +0.00% | +0.16% | |
| Amrize Launches EVERtect™ High-Performance Concrete Range at CONEXPO-CON/AGG 2026 | Press release | Business Wire | +0.52% | +1.88% | |
| Form PRE 14A Amrize Ltd For: Apr 21 | SEC filing · Form PRE | SEC EDGAR | -0.28% | +1.03% | |
| Form 8-K Amrize Ltd For: Feb 19 | SEC filing · Form 8-K | SEC EDGAR | -0.47% | -2.85% | |
| Amrize Closes Acquisition of PB Materials; Aggregates Leader in High-Growth West Texas | Press release | Business Wire | +0.86% | +2.21% | |
| Form 10-K Amrize Ltd For: Dec 31 | SEC filing · Form 10-K | SEC EDGAR | +0.86% | +2.21% | |
| Amrize Delivers Strong Free Cash Flow in 2025; Shareholder Return Plan Proposed | Press release | Business Wire | +0.71% | +4.41% | |
| Form 8-K Amrize Ltd For: Feb 17 | SEC filing · Form 8-K | SEC EDGAR | +0.71% | +4.41% | |
| Form 8-K Amrize Ltd For: Feb 11 | SEC filing · Form 8-K | SEC EDGAR | +1.19% | +0.24% | |
| Amrize Board of Directors Changes | Press release | Business Wire | +1.19% | +0.24% | |
| Form 8-K Amrize Ltd For: Feb 05 | SEC filing · Form 8-K | SEC EDGAR | -0.12% | +1.09% | |
| Amrize Announces Date for Fourth Quarter and Full-Year 2025 Financial Results | Press release | Business Wire | +0.38% | +0.34% | |
| Form 8-K Amrize Ltd For: Jan 15 | SEC filing · Form 8-K | SEC EDGAR | +0.00% | -0.90% | |
| Amrize to Acquire PB Materials; Aggregates Leader in High-Growth West Texas | Press release | Business Wire | +1.09% | -3.83% | |
| Amrize Expands Production Capacity at Flagship U.S. Cement Plant | Press release | Business Wire | +0.11% | -2.03% | |
| Amrize Launches ‘Made in America’ Label for U.S. Builders | Press release | Business Wire | +0.03% | — | |
| Form 10-Q Amrize Ltd For: Sep 30 | SEC filing · Form 10-Q | SEC EDGAR | +1.03% | -0.59% | |
| Amrize Delivers Strong Third Quarter Revenue Growth and Free Cash Flow Generation | Press release | Business Wire | +2.08% | +0.67% | |
| Form 8-K Amrize Ltd For: Oct 28 | SEC filing · Form 8-K | SEC EDGAR | +2.08% | +0.67% | |
| Amrize Announces Date for Third Quarter 2025 Financial Results | Press release | Business Wire | +0.11% | -0.08% | |
| Amrize Partners with Chicago Architecture Biennial to Advance Building | Press release | Business Wire | +0.12% | -0.81% | |
| Amrize Launches Next-Generation Carrier to Further Strengthen Distribution Network for Growth | Press release | Business Wire | -1.22% | -2.39% | |
| Amrize Recommends Shareholders Reject Mini-Tender Offer By TRC Capital Investment Corporation | Press release | Business Wire | -0.02% | -0.29% | |
| Amrize Delivers Solid Second Quarter, Starts Journey in Position of Strength | Press release | Business Wire | +2.62% | +4.43% | |
| Amrize Announces Date for Second Quarter 2025 Financial Results | Press release | Business Wire | +0.01% | -0.07% |
Each reaction is the move the market actually made, measured from the news timestamp. Headlines link through to the AMRZ section they belong to.
Where else AMRZ is measured.
AMRZ earnings → · Analyst actions → · SEC filings →
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How the numbers are made.
How is Amrize Ltd Ordinary Shares's median reaction calculated?
Every labeled AMRZ 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 135 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. 52% of AMRZ'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 AMRZ'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.