Core & Main, Inc. Class A (CNM)
CNM moved a median of +0.18% 30 minutes after news, and +0.49% by the close. How CNM actually reacts to news — the realized, point-in-time move the market made, measured across 356 labeled events over the last three years with zero look-ahead.
CNM’s median reaction, across the day.
| Horizon | Median | % positive | Events |
|---|---|---|---|
| 5-min | +0.04% | 52% | 355 |
| 30-min | +0.18% | 54% | 355 |
| 60-min | +0.10% | 56% | 355 |
| to close | +0.49% | 58% | 355 |
| Middle 50% of CNM reactions | -0.42% to +0.68% |
|---|---|
| Median reaction (30-min) | +0.18% |
| Measured reactions | 356 |
Half of all Core & Main, Inc. Class A news events land between -0.42% and +0.68% at 30 minutes.
Reaction stats as of 2026-09-21. Newest measured event . Reaction = percent move vs. the price at the news timestamp.
How CNM reacts, by analyst action.
| Event | Events | Median 30-min | % positive | Median to close |
|---|---|---|---|---|
| Analyst downgrades | 10 | +0.74% | 90% | +0.46% |
| Coverage initiations | 13 | +0.48% | 69% | +0.09% |
| Rating reiterations | 90 | +0.06% | 52% | +0.03% |
| Price-target raises | 27 | -0.02% | 44% | +0.11% |
| Price-target cuts | 24 | +0.11% | 63% | -1.81% |
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 CNM ranks against every other measured name →
That’s how CNM usually reacts — get an email when it moves on news →Email me when CNM moves on news.
One email per qualifying move — the headline, the measured reaction, and how it compares to CNM's baseline. Nothing else.
Recent CNM events, each with its measured reaction.
| Date | Headline | Event | Source | 5-min | To close |
|---|---|---|---|---|---|
| Core & Main Announces Fiscal 2026 Second Quarter Results | Press release | Business Wire | -4.53% | -6.05% | |
| Core & Main to Announce Fiscal 2026 Second Quarter Results | Press release | Business Wire | -0.29% | +0.88% | |
| Core & Main Announces Launch of Senior Notes O?ering | Press release | Business Wire | +0.25% | +1.75% | |
| Core & Main Announces Pricing of Senior Notes O?ering | Press release | Business Wire | -0.06% | +2.70% | |
| Core & Main Announces Fiscal 2026 First Quarter Results | Press release | Business Wire | +2.71% | -5.12% | |
| Core & Main to Announce Fiscal 2026 First Quarter Results | Press release | Business Wire | -0.09% | +1.09% | |
| Core & Main Announces Changes to Board of Directors and Executive Chair | Press release | Business Wire | +0.22% | -1.67% | |
| Core & Main Announces Fiscal 2025 Fourth Quarter and Full-Year Results | Press release | Business Wire | -3.19% | +4.72% | |
| Core & Main to Announce Fiscal 2025 Fourth Quarter and Full-Year Results | Press release | Business Wire | -0.45% | -0.12% | |
| Core & Main Closes Acquisition of Pioneer Supply | Press release | Business Wire | -0.49% | -3.38% | |
| Core & Main Signs Agreement to Acquire Pioneer Supply | Press release | Business Wire | -0.35% | +1.22% | |
| Core & Main Announces $500 Million Increase to Share Repurchase Authorization | Press release | Business Wire | +1.61% | -0.42% | |
| Core & Main Announces Fiscal 2025 Third Quarter Results | Press release | Business Wire | +1.61% | -0.42% | |
| Form 10-Q Core & Main, Inc. For: Nov 02 | SEC filing · Form 10-Q | SEC EDGAR | +1.61% | -0.42% | |
| Form 8-K Core & Main, Inc. For: Dec 09 | SEC filing · Form 8-K | SEC EDGAR | +1.61% | -0.42% | |
| Core & Main Updates Time of Fiscal 2025 Third Quarter Results Conference Call | Press release | Business Wire | -0.49% | +0.23% | |
| Core & Main to Announce Fiscal 2025 Third Quarter Results | Press release | Business Wire | +0.65% | +2.02% | |
| Core & Main Completes Acquisition of Canada Waterworks | Press release | Business Wire | -0.44% | -2.83% | |
| Core & Main Announces Fiscal 2025 Second Quarter Results | Press release | Business Wire | +1.50% | -2.68% | |
| Form 10-Q Core & Main, Inc. For: Aug 03 | SEC filing · Form 10-Q | SEC EDGAR | +1.50% | -2.68% | |
| Form 8-K Core & Main, Inc. For: Sep 09 | SEC filing · Form 8-K | SEC EDGAR | +1.50% | -2.68% | |
| Core & Main Signs Agreement to Acquire Canada Waterworks | Press release | Business Wire | -1.06% | +1.57% | |
| Core & Main to Announce Fiscal 2025 Second Quarter Results | Press release | Business Wire | +0.38% | +1.76% | |
| Form 8-K Core & Main, Inc. For: Aug 18 | SEC filing · Form 8-K | SEC EDGAR | -0.25% | — | |
| Mama's Select Empowers Mamas with Clean, High-Quality Supplements from Pregnancy Through Breastfeeding | Press release | PR Web | -0.62% | -0.59% | |
| Form 8-K Core & Main, Inc. For: Jun 24 | SEC filing · Form 8-K | SEC EDGAR | -0.21% | -1.02% | |
| Core & Main Announces Record Fiscal 2025 First Quarter Results | Press release | Business Wire | +2.08% | +1.38% | |
| Form 10-Q Core & Main, Inc. For: May 04 | SEC filing · Form 10-Q | SEC EDGAR | +2.08% | +1.38% | |
| Form 8-K Core & Main, Inc. For: Jun 10 | SEC filing · Form 8-K | SEC EDGAR | +2.08% | +1.38% | |
| Core & Main Named to Fortune 500 for First Time | Press release | Business Wire | +0.01% | +0.11% | |
| Core & Main to Announce Fiscal 2025 First Quarter Results | Press release | Business Wire | -0.69% | -0.40% | |
| Form ARS Core & Main, Inc. For: Feb 02 | SEC filing · Form ARS | SEC EDGAR | -0.20% | +0.91% | |
| Form DEF 14A Core & Main, Inc. For: Feb 02 | SEC filing · Form DEF | SEC EDGAR | -0.20% | +0.91% | |
| Form DEFA14A Core & Main, Inc. | SEC filing · Form DEFA14A | SEC EDGAR | -0.20% | +0.91% | |
| Core & Main Announces Fiscal 2024 Fourth Quarter and Full-Year Results | Press release | Business Wire | +0.85% | -0.10% | |
| Core & Main Announces Leadership Transition | Press release | Business Wire | +0.85% | -0.10% | |
| Form 10-K Core & Main, Inc. For: Feb 02 | SEC filing · Form 10-K | SEC EDGAR | +0.85% | -0.10% | |
| Form 8-K Core & Main, Inc. For: Mar 20 | SEC filing · Form 8-K | SEC EDGAR | +0.45% | +0.04% | |
| Form 8-K Core & Main, Inc. For: Mar 25 | SEC filing · Form 8-K | SEC EDGAR | +0.85% | -0.10% | |
| Core & Main to Announce Fiscal 2024 Fourth Quarter and Full-Year Results | Press release | Business Wire | +1.06% | +1.02% | |
| Form 8-K Core & Main, Inc. For: Dec 17 | SEC filing · Form 8-K | SEC EDGAR | -0.12% | -3.87% | |
| Core & Main Announces Record Fiscal 2024 Third Quarter Results | Press release | Business Wire | -0.17% | +3.14% | |
| Form 10-Q Core & Main, Inc. For: Oct 27 | SEC filing · Form 10-Q | SEC EDGAR | -0.17% | +3.14% | |
| Form 8-K Core & Main, Inc. For: Dec 03 | SEC filing · Form 8-K | SEC EDGAR | -0.17% | +3.14% | |
| Core & Main to Announce Fiscal 2024 Third Quarter Results | Press release | Business Wire | -0.07% | -0.53% | |
| Core & Main Completes Acquisition of ARGCO Northeast LLC | Press release | Business Wire | -1.17% | -3.02% | |
| Core & Main Completes Acquisition of Eastcom Associates Inc. | Press release | Business Wire | +0.01% | -2.53% | |
| Core & Main Signs Agreement to Acquire ARGCO Northeast LLC | Press release | Business Wire | +0.51% | +1.18% | |
| Core & Main Signs Agreement to Acquire Eastcom Associates Inc. | Press release | Business Wire | +0.51% | +1.18% | |
| Core & Main Completes Acquisition of Green Equipment Company | Press release | Business Wire | +0.57% | +2.03% |
Each reaction is the move the market actually made, measured from the news timestamp. Headlines link through to the CNM section they belong to.
Where else CNM is measured.
CNM earnings → · Analyst actions → · SEC filings →
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Every name we’ve measured, in one place.
How the numbers are made.
How is Core & Main, Inc. Class A's median reaction calculated?
Every labeled CNM 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 356 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 CNM'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 CNM'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.