AECOM (ACM)
ACM moved a median of +0.07% 30 minutes after news, and -0.13% by the close. How ACM actually reacts to news — the realized, point-in-time move the market made, measured across 345 labeled events over the last three years with zero look-ahead.
ACM’s median reaction, across the day.
| Horizon | Median | % positive | Events |
|---|---|---|---|
| 5-min | -0.01% | 49% | 345 |
| 30-min | +0.07% | 52% | 345 |
| 60-min | -0.09% | 44% | 345 |
| to close | -0.13% | 46% | 344 |
| Middle 50% of ACM reactions | -0.46% to +0.48% |
|---|---|
| Median reaction (30-min) | +0.07% |
| Measured reactions | 345 |
Half of all AECOM news events land between -0.46% and +0.48% at 30 minutes.
Reaction stats as of 2026-09-21. Newest measured event . Reaction = percent move vs. the price at the news timestamp.
How ACM reacts, by analyst action.
| Event | Events | Median 30-min | % positive | Median to close |
|---|---|---|---|---|
| Analyst downgrades | 16 | +0.15% | 63% | +0.04% |
| Coverage initiations | 10 | -0.50% | 30% | +0.98% |
| Rating reiterations | 101 | -0.08% | 41% | -0.28% |
| Price-target raises | 29 | +0.07% | 55% | +0.02% |
| Price-target cuts | 33 | -0.14% | 42% | -0.32% |
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 ACM ranks against every other measured name →
That’s how ACM usually reacts — get an email when it moves on news →Email me when ACM moves on news.
One email per qualifying move — the headline, the measured reaction, and how it compares to ACM's baseline. Nothing else.
Recent ACM events, each with its measured reaction.
| Date | Headline | Event | Source | 5-min | To close |
|---|---|---|---|---|---|
| AECOM appoints Dwight Pullen to lead its global Transportation business | Press release | Business Wire | +0.29% | -0.62% | |
| AECOM-led joint venture appointed as program management consultant for Ontario’s Highway 413 | Press release | Business Wire | +0.28% | +0.48% | |
| AECOM supports low-carbon, climate-resilient redevelopment in Montréal using One Click LCA | Press release | Canada Newswire | -0.23% | -2.31% | |
| AECOM declares quarterly dividend | Press release | Business Wire | +0.03% | +0.35% | |
| Form 8-K AECOM For: Sep 17 | SEC filing · Form 8-K | SEC EDGAR | +0.03% | +0.35% | |
| AECOM announces Chief Legal Officer transition | Press release | Business Wire | +0.03% | +0.35% | |
| Form 8-K AECOM For: Sep 14 | SEC filing · Form 8-K | SEC EDGAR | +0.03% | +0.35% | |
| AECOM and Jacobs joint venture appointed program delivery partner for MetroLink | Press release | Business Wire | -0.12% | -1.16% | |
| AECOM selected to design Pure Water Silicon Valley demonstration facility | Press release | Business Wire | +0.05% | -0.73% | |
| AECOM appointed as design partner on New Zealand’s Northland Corridor, Section One | Press release | Business Wire | +0.81% | -1.59% | |
| Form 10-Q AECOM For: Jul 03 | SEC filing · Form 10-Q | SEC EDGAR | -3.15% | -7.09% | |
| AECOM selected to design New Lisbon Airport | Press release | Business Wire | +0.37% | -0.20% | |
| AECOM announces planned dates for third quarter fiscal 2026 earnings results and conference call | Press release | Business Wire | -0.96% | -0.72% | |
| AECOM selected to help advance major rail transportation project in Australia, The Wave – Stage 1 | Press release | Business Wire | -0.01% | -0.13% | |
| AECOM selected as Lead Designer for the Alexandra Bridge Replacement Project | Press release | Business Wire | -0.31% | -3.33% | |
| AECOM selected as exclusive design partner to support a £340 million upgrade of Thames Water’s Oxford Sewage Treatment Works in the UK | Press release | Business Wire | -0.35% | +2.43% | |
| AECOM secures eight lots on Scotland Excel’s Engineering and Technical Consultancy Framework | Press release | Business Wire | +0.14% | -1.55% | |
| Bronstein, Gewirtz & Grossman, LLC Announces an Investigation Against AECOM (ACM) and Encourages Shareholders to Learn More About the Investigation | Press release | ACCESS Newswire | -0.08% | +1.05% | |
| Form 11-K AECOM For: Dec 31 | SEC filing · Form 11-K | SEC EDGAR | +0.14% | -1.55% | |
| Bronstein, Gewirtz & Grossman, LLC Encourages AECOM (ACM) Shareholders to Inquire about Securities Investigation | Press release | ACCESS Newswire | +0.77% | -0.01% | |
| Bronstein, Gewirtz & Grossman, LLC Is Investigating AECOM (ACM) And Encourages Shareholders to Connect | Press release | ACCESS Newswire | -0.09% | +0.30% | |
| AECOM secures nine lots on UK Government Commercial Agency CPS2 Framework | Press release | Business Wire | -0.08% | -1.06% | |
| Bronstein, Gewirtz & Grossman, LLC Encourages AECOM (ACM) Stockholders to Inquire about Securities Investigation | Press release | ACCESS Newswire | +0.01% | -0.98% | |
| AECOM (ACM) Investigation: Bronstein, Gewirtz & Grossman, LLC Encourages Shareholders to Contact the Firm to Learn More About the Investigation | Press release | ACCESS Newswire | -0.08% | -1.06% | |
| Bronstein, Gewirtz & Grossman, LLC Encourages AECOM (ACM) Stockholders to Inquire about Securities Investigation | Press release | ACCESS Newswire | +0.24% | -2.72% | |
| AECOM (ACM) Investigation: Bronstein, Gewirtz & Grossman, LLC Encourages Stockholders to Contact the Firm to Learn More About the Investigation | Press release | ACCESS Newswire | -0.17% | +2.15% | |
| Bronstein, Gewirtz & Grossman, LLC Announces an Investigation Against AECOM (ACM) and Encourages Stockholders to Learn More About the Investigation | Press release | ACCESS Newswire | +0.08% | -0.61% | |
| Bronstein, Gewirtz & Grossman, LLC Encourages AECOM (ACM) Investors to Inquire about Securities Investigation | Press release | ACCESS Newswire | -0.09% | -1.99% | |
| Form 8-K AECOM For: Jun 10 | SEC filing · Form 8-K | SEC EDGAR | -0.63% | +0.55% | |
| AECOM awarded nationwide U.S. Department of Homeland Security contract to support critical infrastructure modernization | Press release | Business Wire | -1.00% | +0.33% | |
| AECOM declares quarterly dividend | Press release | Business Wire | -0.09% | +2.14% | |
| Form 8-K AECOM For: Jun 03 | SEC filing · Form 8-K | SEC EDGAR | -0.09% | +2.14% | |
| AECOM selected for the top-ranked position on Defence Construction Canada’s National Architecture & Engineering Source List | Press release | Business Wire | -1.17% | -1.25% | |
| AECOM, Binnies and Ramboll joint venture appointed for Phase 2 of Singapore’s Integrated Waste Management Facility | Press release | Business Wire | -2.51% | +1.22% | |
| AECOM selected by New Jersey Turnpike Authority to provide general consulting engineering services | Press release | Business Wire | -1.30% | +0.71% | |
| The Agency Announces Exclusive Partnership with rennie, Further Expanding its Global New Development Platform | Press release | PR Web | +0.51% | +4.05% | |
| Form 10-Q AECOM For: Apr 03 | SEC filing · Form 10-Q | SEC EDGAR | -1.30% | +0.71% | |
| AECOM reports second quarter fiscal 2026 results | Press release | Business Wire | -2.49% | -13.06% | |
| Form 8-K AECOM For: May 11 | SEC filing · Form 8-K | SEC EDGAR | -2.49% | -13.06% | |
| AECOM awarded USACE Baltimore District contract to deliver environmental services | Press release | Business Wire | +0.37% | +1.86% | |
| AECOM announces planned dates for second quarter fiscal 2026 earnings results and conference call | Press release | Business Wire | +0.14% | +0.23% | |
| AECOM selected to continue advancing San Diego Unified School District’s capital bond programs | Press release | Business Wire | +0.39% | -0.25% | |
| AECOM awarded position on $151-billion U.S. MDA SHIELD contract | Press release | Business Wire | +0.74% | +1.18% | |
| AECOM named one of the World’s Most Ethical Companies for the tenth year | Press release | Business Wire | +1.50% | +0.76% | |
| AECOM consortium selected to help deliver first stage of pioneering £200 million STEP fusion energy program | Press release | Business Wire | +0.17% | +0.53% | |
| AECOM joint venture selected to deliver New York City’s first combined sewer overflow storage tunnel | Press release | Business Wire | -1.68% | -3.49% | |
| Form 8-K AECOM For: Mar 10 | SEC filing · Form 8-K | SEC EDGAR | -0.08% | +0.42% | |
| AECOM declares quarterly dividend | Press release | Business Wire | +1.16% | +1.69% | |
| Form 8-K AECOM For: Mar 03 | SEC filing · Form 8-K | SEC EDGAR | +1.16% | +1.69% | |
| AECOM to provide design, environmental, and project management services for Sound Transit’s Seattle-area regional transit expansion | Press release | Business Wire | -0.76% | -0.02% |
Each reaction is the move the market actually made, measured from the news timestamp. Headlines link through to the ACM section they belong to.
Where else ACM is measured.
ACM earnings → · Analyst actions → · SEC filings →
Other Industrials names, measured the same way
| Ticker | Events | Median 30-min | % positive |
|---|---|---|---|
| Gates Industrial Corporation Ltd. (GTES) | 347 | 0.00% | 49% |
| Toro Company (The) (TTC) | 347 | +0.03% | 53% |
| FOUNDATION BUILDING MATERIALS INC (FBM) | 345 | -0.21% | 38% |
| TEL INSTRUMENT ELECTRONIC (TIK) | 344 | 0.00% | 37% |
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 Industrials names, measured the same way →
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Every name we’ve measured, in one place.
How the numbers are made.
How is AECOM's median reaction calculated?
Every labeled ACM 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 345 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 ACM'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 ACM'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.