Arq, Inc. (ARQ)
ARQ moved a median of 0.00% 30 minutes after news, and 0.00% by the close. How ARQ actually reacts to news — the realized, point-in-time move the market made, measured across 251 labeled events over the last three years with zero look-ahead.
ARQ’s median reaction, across the day.
| Horizon | Median | % positive | Events |
|---|---|---|---|
| 5-min | 0.00% | 45% | 251 |
| 30-min | 0.00% | 47% | 251 |
| 60-min | +0.21% | 51% | 251 |
| to close | 0.00% | 46% | 246 |
| Middle 50% of ARQ reactions | -1.25% to +1.25% |
|---|---|
| Median reaction (30-min) | 0.00% |
| Measured reactions | 251 |
Half of all Arq, Inc. news events land between -1.25% and +1.25% at 30 minutes.
Reaction stats as of 2026-09-21. Newest measured event . Reaction = percent move vs. the price at the news timestamp.
Email me when ARQ moves on news.
One email per qualifying move — the headline, the measured reaction, and how it compares to ARQ's baseline. Nothing else.
Recent ARQ events, each with its measured reaction.
| Date | Headline | Event | Source | 5-min | To close |
|---|---|---|---|---|---|
| Arq Schedules Third Quarter 2026 Earnings Conference Call | Press release | GlobeNewswire | -0.03% | +0.00% | |
| Arq Publishes 2025 Sustainability Report | Press release | GlobeNewswire | -1.51% | -4.54% | |
| Form S-8 Arq, Inc. | SEC filing · Form S-8 | SEC EDGAR | +0.96% | -1.91% | |
| Arq to Attend Upcoming Investor Conferences | Press release | GlobeNewswire | +2.42% | +1.69% | |
| Arq Appoints Peter Owino as Chief Accounting Officer | Press release | GlobeNewswire | +0.00% | -0.94% | |
| Form 8-K Arq, Inc. For: Aug 24 | SEC filing · Form 8-K | SEC EDGAR | +0.00% | -0.94% | |
| Form 8-K Arq, Inc. For: Jul 17 | SEC filing · Form 8-K | SEC EDGAR | +0.99% | +0.25% | |
| Arq Schedules Second Quarter 2026 Earnings Conference Call | Press release | GlobeNewswire | +0.96% | -0.96% | |
| Form 8-K Arq, Inc. For: Jun 30 | SEC filing · Form 8-K | SEC EDGAR | +5.46% | -3.06% | |
| Form S-8 Arq, Inc. | SEC filing · Form S-8 | SEC EDGAR | -0.19% | +6.38% | |
| Form 8-K Arq, Inc. For: Jun 14 | SEC filing · Form 8-K | SEC EDGAR | -1.83% | -7.53% | |
| Form 8-K Arq, Inc. For: Jun 10 | SEC filing · Form 8-K | SEC EDGAR | +0.00% | +0.00% | |
| Arq Strengthens Executive Team with Appointment of Shimon Steinmetz as Chief Financial Officer | Press release | GlobeNewswire | -2.23% | +0.73% | |
| Form 8-K Arq, Inc. For: May 20 | SEC filing · Form 8-K | SEC EDGAR | -2.23% | +0.73% | |
| Arq Reports First Quarter 2026 Results | Press release | GlobeNewswire | +4.89% | +10.21% | |
| Form 10-Q Arq, Inc. For: Mar 31 | SEC filing · Form 10-Q | SEC EDGAR | +4.89% | +10.21% | |
| Form 8-K Arq, Inc. For: May 06 | SEC filing · Form 8-K | SEC EDGAR | +4.89% | +10.21% | |
| Form 8-K Arq, Inc. For: Apr 29 | SEC filing · Form 8-K | SEC EDGAR | +3.52% | +7.93% | |
| Form ARS Arq, Inc. For: Dec 31 | SEC filing · Form ARS | SEC EDGAR | +0.89% | -0.45% | |
| Form DEF 14A Arq, Inc. For: Dec 31 | SEC filing · Form DEF | SEC EDGAR | +0.89% | -0.45% | |
| Form DEFA14A Arq, Inc. | SEC filing · Form DEFA14A | SEC EDGAR | +0.89% | -0.45% | |
| Arq Schedules First Quarter 2026 Earnings Conference Call | Press release | GlobeNewswire | +0.00% | +0.45% | |
| Form 8-A12B/A Arq, Inc. | SEC filing · Form 8-A12B | SEC EDGAR | +0.00% | +1.36% | |
| Form 8-K Arq, Inc. For: Apr 15 | SEC filing · Form 8-K | SEC EDGAR | +0.00% | +1.36% | |
| Form PRE 14A Arq, Inc. For: Dec 31 | SEC filing · Form PRE | SEC EDGAR | +0.00% | +1.36% | |
| Bronstein, Gewirtz & Grossman, LLC Encourages Bronstein, Gewirtz & Grossman, LLC (ARQ) Investors to Inquire about Securities Investigation | Press release | ACCESS Newswire | +2.43% | +0.00% | |
| Bronstein, Gewirtz & Grossman, LLC Initiates an Investigation into Allegations Against Arq, Inc. (ARQ) And Encourages Shareholders to Reach Out | Press release | ACCESS Newswire | -0.26% | +3.35% | |
| Bronstein, Gewirtz & Grossman, LLC Announces an Investigation Against Arq, Inc. (ARQ) and Encourages Shareholders to Learn More About the Investigation | Press release | ACCESS Newswire | -0.39% | -8.35% | |
| Form 8-K Arq, Inc. For: Mar 31 | SEC filing · Form 8-K | SEC EDGAR | -0.78% | -8.53% | |
| Bronstein, Gewirtz & Grossman, LLC Encourages Arq, Inc. (ARQ) Shareholders to Inquire about Securities Investigation | Press release | ACCESS Newswire | +0.59% | -1.39% | |
| Bronstein, Gewirtz & Grossman, LLC Encourages Arq, Inc. (ARQ) Stockholders to Inquire about Securities Investigation | Press release | ACCESS Newswire | +0.20% | +0.99% | |
| Arq, Inc. (ARQ) Investigation: Bronstein, Gewirtz & Grossman, LLC Encourages Shareholders to Contact the Firm to Learn More About the Investigation | Press release | ACCESS Newswire | -1.80% | +0.20% | |
| Arq to Participate in Water Tower Research Fireside Chat Series on March 25, 2026 | Press release | GlobeNewswire | +0.21% | +2.88% | |
| Bronstein, Gewirtz & Grossman, LLC Is Investigating Arq, Inc. (ARQ) And Encourages Stockholders to Connect | Press release | ACCESS Newswire | +0.73% | +10.46% | |
| Arq, Inc. (ARQ) Investigation: Bronstein, Gewirtz & Grossman, LLC Encourages Stockholders to Contact the Firm to Learn More About the Investigation | Press release | ACCESS Newswire | +0.51% | +14.65% | |
| Bronstein, Gewirtz & Grossman, LLC Announces an Investigation Against Arq, Inc. (ARQ) and Encourages Stockholders to Learn More About the Investigation | Press release | ACCESS Newswire | -0.25% | -1.49% | |
| Bronstein, Gewirtz & Grossman, LLC Encourages Arq, Inc. (ARQ) Investors to Inquire about Securities Investigation | Press release | ACCESS Newswire | +1.03% | +6.43% | |
| Form 10-K Arq, Inc. For: Dec 31 | SEC filing · Form 10-K | SEC EDGAR | -3.71% | -18.81% | |
| Form 8-K Arq, Inc. For: Mar 09 | SEC filing · Form 8-K | SEC EDGAR | -3.71% | -18.81% | |
| Arq Reports Fourth Quarter and Full Year 2025 Results | Press release | GlobeNewswire | -3.71% | -18.81% | |
| Form 8-K Arq, Inc. For: Feb 27 | SEC filing · Form 8-K | SEC EDGAR | +0.00% | -0.57% | |
| Arq Schedules Fourth Quarter & Full-Year 2025 Earnings Conference Call | Press release | GlobeNewswire | +0.00% | +1.49% | |
| Form 8-K Arq, Inc. For: Jan 28 | SEC filing · Form 8-K | SEC EDGAR | +0.83% | -1.66% | |
| Form 8-K Arq, Inc. For: Dec 09 | SEC filing · Form 8-K | SEC EDGAR | -0.83% | -6.94% | |
| Arq Reports Third Quarter 2025 Results | Press release | GlobeNewswire | -7.07% | -14.76% | |
| Form 10-Q Arq, Inc. For: Sep 30 | SEC filing · Form 10-Q | SEC EDGAR | -7.07% | -14.76% | |
| Form 8-K Arq, Inc. For: Nov 05 | SEC filing · Form 8-K | SEC EDGAR | -7.07% | -14.76% | |
| Arq Schedules Third Quarter 2025 Earnings Conference Call | Press release | GlobeNewswire | -0.57% | +0.71% | |
| Arq Publishes 2024 Sustainability Report | Press release | GlobeNewswire | +0.63% | +2.92% | |
| Form 8-K/A Arq, Inc. For: Jun 03 | SEC filing · Form 8-K | SEC EDGAR | -0.54% | -0.68% |
Each reaction is the move the market actually made, measured from the news timestamp. Headlines link through to the ARQ section they belong to.
Where else ARQ is measured.
ARQ earnings → · Analyst actions → · SEC filings →
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How the numbers are made.
How is Arq, Inc.'s median reaction calculated?
Every labeled ARQ 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 251 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. 47% of ARQ'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 ARQ'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.