Amphenol Corporation (APH)
APH moved a median of +0.08% 30 minutes after news, and +0.13% by the close. How APH actually reacts to news — the realized, point-in-time move the market made, measured across 365 labeled events over the last three years with zero look-ahead.
APH’s median reaction, across the day.
| Horizon | Median | % positive | Events |
|---|---|---|---|
| 5-min | -0.02% | 49% | 365 |
| 30-min | +0.08% | 53% | 365 |
| 60-min | +0.12% | 54% | 365 |
| to close | +0.13% | 55% | 362 |
| Middle 50% of APH reactions | -0.50% to +0.41% |
|---|---|
| Median reaction (30-min) | +0.08% |
| Measured reactions | 365 |
Half of all Amphenol Corporation news events land between -0.50% 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 APH reacts, by analyst action.
| Event | Events | Median 30-min | % positive | Median to close |
|---|---|---|---|---|
| Analyst upgrades | 13 | +0.41% | 85% | +1.93% |
| Coverage initiations | 20 | +0.49% | 70% | -0.01% |
| Rating reiterations | 125 | +0.03% | 54% | +0.33% |
| Price-target raises | 72 | +0.17% | 58% | +0.43% |
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 APH ranks against every other measured name →
That’s how APH usually reacts — get an email when it moves on news →Email me when APH moves on news.
One email per qualifying move — the headline, the measured reaction, and how it compares to APH's baseline. Nothing else.
Recent APH events, each with its measured reaction.
| Date | Headline | Event | Source | 5-min | To close |
|---|---|---|---|---|---|
| Form 8-K AMPHENOL CORP /DE/ For: Oct 01 | SEC filing · Form 8-K | SEC EDGAR | +0.74% | +0.39% | |
| Form 8-K AMPHENOL CORP /DE/ For: Sep 02 | SEC filing · Form 8-K | SEC EDGAR | -0.55% | -2.02% | |
| Amphenol Announces Two-for-One Stock Split and Third Quarter 2026 Dividend | Press release | Business Wire | -0.38% | +0.51% | |
| Form 8-K AMPHENOL CORP /DE/ For: Aug 06 | SEC filing · Form 8-K | SEC EDGAR | -0.78% | -1.42% | |
| Form 10-Q AMPHENOL CORP /DE/ For: Jun 30 | SEC filing · Form 10-Q | SEC EDGAR | -0.53% | +3.56% | |
| Amphenol Reports Record Second Quarter 2026 Results | Press release | Business Wire | -1.51% | -4.26% | |
| Form 8-K AMPHENOL CORP /DE/ For: Jul 29 | SEC filing · Form 8-K | SEC EDGAR | +0.31% | -1.35% | |
| Form SD AMPHENOL CORP /DE/ | SEC filing · Form SD | SEC EDGAR | +0.49% | -0.10% | |
| Form 8-K AMPHENOL CORP /DE/ For: May 21 | SEC filing · Form 8-K | SEC EDGAR | +2.05% | +1.87% | |
| Form CERT AMPHENOL CORP /DE/ | SEC filing · Form CERT | SEC EDGAR | -0.02% | -0.34% | |
| Form 8-A12B AMPHENOL CORP /DE/ | SEC filing · Form 8-A12B | SEC EDGAR | -1.37% | -3.92% | |
| Form 8-K AMPHENOL CORP /DE/ For: May 12 | SEC filing · Form 8-K | SEC EDGAR | -1.37% | -3.92% | |
| Amphenol Announces Second Quarter 2026 Dividend | Press release | Business Wire | -1.11% | -1.79% | |
| Form 8-K AMPHENOL CORP /DE/ For: May 05 | SEC filing · Form 8-K | SEC EDGAR | +0.91% | -0.29% | |
| Amphenol Announces Pricing of Euro-Denominated Senior Notes Offerings | Press release | Business Wire | +0.91% | -0.29% | |
| Form 10-Q AMPHENOL CORP /DE/ For: Mar 31 | SEC filing · Form 10-Q | SEC EDGAR | -0.20% | -1.69% | |
| Amphenol Reports Record First Quarter 2026 Results | Press release | Business Wire | -1.05% | -3.02% | |
| Form 8-K AMPHENOL CORP /DE/ For: Apr 29 | SEC filing · Form 8-K | SEC EDGAR | -1.05% | -3.02% | |
| Amphenol Releases 2025 Sustainability Report | Press release | Business Wire | +0.89% | +0.00% | |
| Form ARS AMPHENOL CORP /DE/ For: Dec 31 | SEC filing · Form ARS | SEC EDGAR | +0.17% | -0.50% | |
| Form DEF 14A AMPHENOL CORP /DE/ For: May 21 | SEC filing · Form DEF | SEC EDGAR | +0.17% | -0.50% | |
| Form DEFA14A AMPHENOL CORP /DE/ | SEC filing · Form DEFA14A | SEC EDGAR | +0.17% | -0.50% | |
| Amphenol Announces Details of Open Offer for ADC India Communications Limited | Press release | Business Wire | +0.49% | +0.42% | |
| Form 8-K AMPHENOL CORP /DE/ For: Mar 30 | SEC filing · Form 8-K | SEC EDGAR | -0.41% | -4.98% | |
| Form 8-K/A AMPHENOL CORP /DE/ For: Jan 09 | SEC filing · Form 8-K | SEC EDGAR | -0.41% | -4.98% | |
| Amphenol Announces Pricing of Euro-Denominated Senior Notes Offering | Press release | Business Wire | -0.66% | -0.87% | |
| Form 8-K AMPHENOL CORP /DE/ For: Mar 24 | SEC filing · Form 8-K | SEC EDGAR | -0.66% | -0.87% | |
| Form S-3ASR AMPHENOL CORP /DE/ | SEC filing · Form S-3ASR | SEC EDGAR | -0.20% | -0.32% | |
| Form 10-K AMPHENOL CORP /DE/ For: Dec 31 | SEC filing · Form 10-K | SEC EDGAR | +0.65% | -2.42% | |
| Amphenol Announces First Quarter 2026 Dividend | Press release | Business Wire | +0.05% | -0.55% | |
| Form 8-K AMPHENOL CORP /DE/ For: Feb 04 | SEC filing · Form 8-K | SEC EDGAR | +0.05% | -0.55% | |
| Amphenol Announces Board Succession Plan | Press release | Business Wire | +0.05% | -0.55% | |
| Amphenol Reports Record Fourth Quarter and Full Year 2025 Results | Press release | Business Wire | -0.10% | +2.08% | |
| Form 8-K AMPHENOL CORP /DE/ For: Jan 28 | SEC filing · Form 8-K | SEC EDGAR | -0.10% | +2.08% | |
| Amphenol Announces Details of Open Offer for ADC India Communications Limited | Press release | Business Wire | +2.06% | +2.70% | |
| Amphenol Completes Acquisition of CCS Business From CommScope | Press release | Business Wire | +2.23% | +2.44% | |
| Form 8-K AMPHENOL CORP /DE/ For: Jan 09 | SEC filing · Form 8-K | SEC EDGAR | +2.23% | +2.44% | |
| Amphenol Appoints Sanjiv Lamba to Board of Directors | Press release | Business Wire | +1.21% | +2.86% | |
| Form 8-K AMPHENOL CORP /DE/ For: Jan 08 | SEC filing · Form 8-K | SEC EDGAR | +1.21% | +2.86% | |
| Form 8-K AMPHENOL CORP /DE/ For: Nov 10 | SEC filing · Form 8-K | SEC EDGAR | +0.25% | +0.89% | |
| Amphenol Corporation Closes Trexon Acquisition | Press release | Business Wire | -0.60% | -0.93% | |
| Form 8-K AMPHENOL CORP /DE/ For: Oct 27 | SEC filing · Form 8-K | SEC EDGAR | -0.06% | +0.96% | |
| Amphenol Corporation Announces Pricing of Senior Notes Offerings | Press release | Business Wire | -0.06% | +0.96% | |
| Form 10-Q AMPHENOL CORP /DE/ For: Sep 30 | SEC filing · Form 10-Q | SEC EDGAR | +0.76% | +0.16% | |
| Amphenol Reports Record Third Quarter 2025 Results and Announces Dividend Increase | Press release | Business Wire | -1.17% | -4.84% | |
| Form 8-K AMPHENOL CORP /DE/ For: Oct 22 | SEC filing · Form 8-K | SEC EDGAR | -1.17% | -4.84% | |
| Form 8-K AMPHENOL CORP /DE/ For: Aug 22 | SEC filing · Form 8-K | SEC EDGAR | +0.21% | +0.07% | |
| Amphenol Corporation to Acquire Trexon | Press release | Business Wire | +0.32% | +0.96% | |
| Audax Private Equity Announces Sale of Trexon | Press release | Business Wire | +0.32% | +0.96% | |
| Amphenol Corporation to Acquire Connectivity and Cable Solutions Business From CommScope | Press release | Business Wire | -1.40% | +0.16% |
Each reaction is the move the market actually made, measured from the news timestamp. Headlines link through to the APH section they belong to.
Where else APH is measured.
APH earnings → · Analyst actions → · SEC filings →
Other Technology names, measured the same way
| Ticker | Events | Median 30-min | % positive |
|---|---|---|---|
| ePlus inc. (PLUS) | 369 | +0.13% | 56% |
| Axcelis Technologies, Inc. (ACLS) | 365 | -0.02% | 50% |
| PTC Inc. (PTC) | 365 | -0.05% | 47% |
| Daktronics, Inc. (DAKT) | 364 | 0.00% | 50% |
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 Amphenol Corporation's median reaction calculated?
Every labeled APH 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 365 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 APH'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 APH'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.