Antero Midstream Corporation (AM)
AM moved a median of +0.42% 30 minutes after news, and +0.28% by the close. How AM actually reacts to news — the realized, point-in-time move the market made, measured across 252 labeled events over the last three years with zero look-ahead.
AM’s median reaction, across the day.
| Horizon | Median | % positive | Events |
|---|---|---|---|
| 5-min | +0.24% | 63% | 252 |
| 30-min | +0.42% | 67% | 252 |
| 60-min | +0.32% | 68% | 252 |
| to close | +0.28% | 57% | 251 |
| Middle 50% of AM reactions | -0.24% to +0.93% |
|---|---|
| Median reaction (30-min) | +0.42% |
| Measured reactions | 252 |
Half of all Antero Midstream Corporation news events land between -0.24% and +0.93% at 30 minutes.
Reaction stats as of 2026-08-31. Newest measured event . Reaction = percent move vs. the price at the news timestamp.
How AM reacts, by analyst action.
| Event | Events | Median 30-min | % positive | Median to close |
|---|---|---|---|---|
| Analyst upgrades | 21 | -0.20% | 43% | -0.20% |
| Analyst downgrades | 26 | +0.10% | 62% | -0.04% |
| Rating reiterations | 18 | +0.21% | 61% | +0.32% |
Last 3 years, pulled 2026-08-31. Reaction = percent move vs. the price at the news timestamp. Counts and medians only. The same measurement runs across every name in the dataset. 3 further classes were observed with fewer than 10 measured events and are not published. See how AM ranks against every other measured name →
That’s how AM usually reacts — get an email when it moves on news →Email me when AM moves on news.
One email per qualifying move — the headline, the measured reaction, and how it compares to AM's baseline. Nothing else.
Recent AM events, each with its measured reaction.
| Date | Headline | Event | Source | 5-min | To close |
|---|---|---|---|---|---|
| Antero Announced as Official Jersey Patch Sponsor of WVU Athletics | Press release | PR Newswire | -0.60% | +0.28% | |
| Antero Midstream Announces Second Quarter 2026 Financial and Operating Results | Press release | PR Newswire | -0.69% | -1.46% | |
| Form 10-Q Antero Midstream Corp For: Jun 30 | SEC filing · Form 10-Q | SEC EDGAR | -0.69% | -1.46% | |
| Form 8-K Antero Midstream Corp For: Jul 29 | SEC filing · Form 8-K | SEC EDGAR | -0.69% | -1.46% | |
| Form 8-K Antero Midstream Corp For: Jul 24 | SEC filing · Form 8-K | SEC EDGAR | +0.11% | -2.62% | |
| Antero Midstream Announces Second Quarter 2026 Return of Capital and Earnings Release Date and Conference Call | Press release | PR Newswire | +0.31% | +1.51% | |
| Form 8-K Antero Midstream Corp For: Jun 03 | SEC filing · Form 8-K | SEC EDGAR | +0.07% | +0.19% | |
| Form 8-K Antero Midstream Corp For: May 12 | SEC filing · Form 8-K | SEC EDGAR | -0.66% | -0.14% | |
| Antero Midstream Announces First Quarter 2026 Financial and Operating Results | Press release | PR Newswire | +1.34% | +3.02% | |
| Form 10-Q Antero Midstream Corp For: Mar 31 | SEC filing · Form 10-Q | SEC EDGAR | +1.34% | +3.02% | |
| Form 8-K Antero Midstream Corp For: Apr 29 | SEC filing · Form 8-K | SEC EDGAR | +1.34% | +3.02% | |
| Form ARS Antero Midstream Corp For: Dec 31 | SEC filing · Form ARS | SEC EDGAR | -0.23% | -0.05% | |
| Form DEF 14A Antero Midstream Corp For: Jun 03 | SEC filing · Form DEF | SEC EDGAR | -0.23% | -0.05% | |
| Form DEFA14A Antero Midstream Corp | SEC filing · Form DEFA14A | SEC EDGAR | -0.23% | -0.05% | |
| Antero Midstream Announces First Quarter 2026 Return of Capital and Earnings Release Date and Conference Call | Press release | PR Newswire | +0.42% | -0.38% | |
| Form 8-K Antero Midstream Corp For: Apr 01 | SEC filing · Form 8-K | SEC EDGAR | -0.31% | -0.31% | |
| Form 8-K Antero Midstream Corp For: Feb 23 | SEC filing · Form 8-K | SEC EDGAR | -0.90% | +1.65% | |
| Antero Midstream Announces Fourth Quarter 2025 Results and 2026 Guidance | Press release | PR Newswire | -0.83% | -0.38% | |
| Form 10-K Antero Midstream Corp For: Dec 31 | SEC filing · Form 10-K | SEC EDGAR | -0.83% | -0.38% | |
| Form 8-K Antero Midstream Corp For: Feb 11 | SEC filing · Form 8-K | SEC EDGAR | -0.83% | -0.38% | |
| Form 8-K Antero Midstream Corp For: Feb 03 | SEC filing · Form 8-K | SEC EDGAR | +0.24% | +0.91% | |
| Antero Midstream Announces Fourth Quarter 2025 Return of Capital and Earnings Release Date and Conference Call | Press release | PR Newswire | -1.18% | +0.00% | |
| Form 8-K Antero Midstream Corp For: Dec 23 | SEC filing · Form 8-K | SEC EDGAR | +0.00% | -0.67% | |
| Form 8-K Antero Midstream Corp For: Dec 09 | SEC filing · Form 8-K | SEC EDGAR | -0.16% | -2.67% | |
| Antero Midstream Announces Launch of $500 Million Offering of Senior Notes | Press release | PR Newswire | +0.70% | +0.00% | |
| Antero Midstream Announces Pricing of Upsized $600 Million Offering of Senior Notes | Press release | PR Newswire | -0.16% | -2.67% | |
| Form 8-K Antero Midstream Corp For: Dec 09 | SEC filing · Form 8-K | SEC EDGAR | +0.70% | +0.00% | |
| Antero Midstream Announces Strategic $1.1 Billion Acquisition of Marcellus Shale Assets and Ohio Utica Divestiture | Press release | PR Newswire | -0.35% | +1.80% | |
| Form 8-K Antero Midstream Corp For: Dec 05 | SEC filing · Form 8-K | SEC EDGAR | -0.35% | +1.80% | |
| Form 8-K Antero Midstream Corp For: Nov 12 | SEC filing · Form 8-K | SEC EDGAR | +0.61% | -0.33% | |
| Antero Midstream Announces Third Quarter 2025 Financial and Operating Results | Press release | PR Newswire | -0.14% | +1.39% | |
| Form 10-Q Antero Midstream Corp For: Sep 30 | SEC filing · Form 10-Q | SEC EDGAR | -0.14% | +1.39% | |
| Form 8-K Antero Midstream Corp For: Oct 29 | SEC filing · Form 8-K | SEC EDGAR | -0.14% | +1.39% | |
| Antero Midstream Announces Third Quarter 2025 Return of Capital and Earnings Release Date and Conference Call | Press release | PR Newswire | -0.09% | -3.04% | |
| Form 8-K Antero Midstream Corp For: Sep 17 | SEC filing · Form 8-K | SEC EDGAR | +0.05% | +1.92% | |
| Form 8-K Antero Midstream Corp For: Sep 08 | SEC filing · Form 8-K | SEC EDGAR | +0.41% | +0.77% | |
| Antero Midstream Announces Launch of $500 Million Offering of Senior Notes | Press release | PR Newswire | +0.25% | -0.82% | |
| Antero Midstream Announces Pricing of Upsized $650 Million Offering of Senior Notes | Press release | PR Newswire | +0.41% | +0.77% | |
| Form 8-K Antero Midstream Corp For: Sep 08 | SEC filing · Form 8-K | SEC EDGAR | +0.25% | -0.82% | |
| Antero Resources and Antero Midstream Announce Co-Founder Paul M. Rady to Transition to Chairman Emeritus | Press release | PR Newswire | +0.22% | -1.32% | |
| Antero Resources and Antero Midstream Announce Michael N. Kennedy to Serve as Chief Executive Officer, President and Director | Press release | PR Newswire | +0.22% | -1.32% | |
| Form 8-K Antero Midstream Corp For: Aug 14 | SEC filing · Form 8-K | SEC EDGAR | +0.22% | -1.32% | |
| Form 8-K Antero Midstream Corp For: Aug 12 | SEC filing · Form 8-K | SEC EDGAR | -0.14% | — | |
| Antero Midstream Announces Second Quarter 2025 Financial and Operating Results and Increased Guidance | Press release | PR Newswire | +4.06% | +6.50% | |
| Form 10-Q Antero Midstream Corp For: Jun 30 | SEC filing · Form 10-Q | SEC EDGAR | +4.06% | +6.50% | |
| Form 8-K Antero Midstream Corp For: Jul 30 | SEC filing · Form 8-K | SEC EDGAR | +4.06% | +6.50% | |
| Antero Midstream Announces Second Quarter 2025 Return of Capital and Earnings Release Date and Conference Call | Press release | PR Newswire | -0.12% | -0.06% | |
| Form 8-K Antero Midstream Corp For: Jun 04 | SEC filing · Form 8-K | SEC EDGAR | +0.16% | +0.48% | |
| Form 8-K Antero Midstream Corp For: May 19 | SEC filing · Form 8-K | SEC EDGAR | +0.00% | +0.53% | |
| Antero Midstream Announces First Quarter 2025 Financial and Operating Results | Press release | PR Newswire | +1.42% | +2.00% |
Each reaction is the move the market actually made, measured from the news timestamp. Headlines link through to the AM section they belong to.
Where else AM is measured.
AM earnings → · Analyst actions → · SEC filings →
Other Energy names, measured the same way
| Ticker | Events | Median 30-min | % positive |
|---|---|---|---|
| APERGY CORP (APY) | 258 | -0.46% | 44% |
| Sunoco LP Common Units representing limited partner interests (SUN) | 254 | +0.11% | 57% |
| Geopark Ltd Common Shares (GPRK) | 252 | 0.00% | 48% |
| VALERO ENERGY PARTNERS LP (VLP) | 252 | -0.03% | 47% |
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 Energy names, measured the same way →
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Every name we’ve measured, in one place.
How the numbers are made.
How is Antero Midstream Corporation's median reaction calculated?
Every labeled AM 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 252 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. 67% of AM'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 2026-08-31.
Does AM'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.