Aecom Technology vs MasTec: why the prices moved differently

Weekly · monthly · quarterly news summaries, side by side in time

Aecom Technology Corporation (ACM)

Q3 202618 Jun – 9 Oct 2026

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AECOM hit by $337M charge, record backlog offers hope

$337M charge turns profit to loss A $337 million pre-tax charge on a 2019 construction-management contract turned profit into a loss, drove the stock to a 52-week low, and raised doubts about cost controls.
This was the main negative event that drove the stock down.
Cash flow guidance cut, cash pressure ahead Management cut free-cash-flow guidance from $400 million to $300 million and warned of about $500 million in cash pressure into fiscal 2027, limiting buybacks, dividends, or debt reduction.
This reduced financial flexibility and worried investors about future cash generation.
Zacks downgrade to Strong Sell Zacks downgraded the shares to Strong Sell after a $1.99 EPS miss, adding to negative sentiment and selling pressure.
The downgrade reflected and amplified concerns about earnings and execution.
Record backlog up 13% to $27.8B AECOM’s backlog rose 13% to a record $27.8 billion, with strong U.S. infrastructure and data-center demand, while new AI, UK framework, water, and rail wins support future growth—though they don’t resolve near-term cash issues.
This shows strong demand and future revenue potential, offsetting some negative news.

August 202617 Jul – 9 Oct 2026

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AECOM's record backlog offset by $337M charge and cash-flow cuts

Record backlog and margin raise vs. $337M charge AECOM posted a record backlog (up 13%) and raised its full-year EBITDA margin outlook, but a $337 million pretax charge on a delayed construction project wiped out quarterly profit and forced $185 million of cash use. The charge is the main reason the stock is under pressure.
This is the central event of the period, explaining both the positive backlog story and the negative earnings hit.
Guidance cut and weak cash flow AECOM cut its fiscal 2026 revenue and free-cash-flow guidance (cash flow from $400M to about $300M) and expects roughly $500 million more cash burn in the first half of fiscal 2027. Lower cash means less money for buybacks, dividends, or debt reduction, which weighs on the stock.
Guidance cuts directly change what investors expect AECOM to earn and are a key driver of the negative price reaction.
Analyst downgrade to Strong Sell Zacks named AECOM its Bear of the Day and ranked it #5 (Strong Sell) after the company missed earnings estimates by $1.99 per share. A sell rating from a widely followed research firm can push more investors to sell, adding downward pressure on the price.
Analyst ratings influence investor sentiment and can amplify price moves, making this a relevant driver.
New water and rail contract wins AECOM won several major contracts, including a roughly £340 million Thames Water upgrade and a Silicon Valley water-reuse design job. These wins support future revenue and show its water pipeline is growing, but they are smaller than the charge and do not fix near-term cash problems.
Contract wins are the main positive demand driver this period, showing the underlying business still wins work.

Latest17 Jul – 9 Oct 2026

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AECOM's record backlog offset by $337M charge and cash-flow cuts

Record backlog and margin raise vs. $337M charge AECOM posted a record backlog (up 13%) and raised its full-year EBITDA margin outlook, but a $337 million pretax charge on a delayed construction project wiped out quarterly profit and forced $185 million of cash use. The charge is the main reason the stock is under pressure.
This is the central event of the period, explaining both the positive backlog story and the negative earnings hit.
Guidance cut and weak cash flow AECOM cut its fiscal 2026 revenue and free-cash-flow guidance (cash flow from $400M to about $300M) and expects roughly $500 million more cash burn in the first half of fiscal 2027. Lower cash means less money for buybacks, dividends, or debt reduction, which weighs on the stock.
Guidance cuts directly change what investors expect AECOM to earn and are a key driver of the negative price reaction.
Analyst downgrade to Strong Sell Zacks named AECOM its Bear of the Day and ranked it #5 (Strong Sell) after the company missed earnings estimates by $1.99 per share. A sell rating from a widely followed research firm can push more investors to sell, adding downward pressure on the price.
Analyst ratings influence investor sentiment and can amplify price moves, making this a relevant driver.
New water and rail contract wins AECOM won several major contracts, including a roughly £340 million Thames Water upgrade and a Silicon Valley water-reuse design job. These wins support future revenue and show its water pipeline is growing, but they are smaller than the charge and do not fix near-term cash problems.
Contract wins are the main positive demand driver this period, showing the underlying business still wins work.

July 202618 Jun – 14 Aug 2026

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AECOM's old-project charge crushes profit and cash outlook

Surprise loss on 2019 contract AECOM took a $337 million pre-tax charge on a construction-management job signed in 2019, turning a expected profit into a quarterly loss and cutting full-year earnings guidance. This is the main reason the stock fell to a 52-week low, because investors now doubt how well the company controls project risk.
It is the single biggest new event driving the stock down and resetting expectations.
Free cash flow guidance cut Management cut this year's free cash flow target to $300 million from $400 million and warned of about $500 million in cash pressure into early fiscal 2027. Less cash coming in means less money for buybacks, dividends or debt reduction, which weighs on the shares.
It explains the cash strain behind the selloff, not just the accounting loss.
Record backlog shows demand intact Even with the loss, AECOM's backlog rose 13% to a record $27.8 billion, with a book-to-burn ratio of 1.6, meaning it won far more work than it billed. Strong demand from U.S. infrastructure and data-center projects is a real counterweight to the bad news.
It is the main positive force keeping the long-term story alive despite the charge.
AI and UK framework expand opportunity AECOM is winning work by using AI tools on big projects and expanded its role on a $4.7 billion UK government framework into defense, nuclear and flood-risk work. These add to its addressable market and support future growth, though they are smaller than the charge's hit.
It shows the growth drivers that could offset the project loss over time.

18 Jun – 14 Aug 2026

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AECOM's old-project charge crushes profit and cash outlook

Surprise loss on 2019 contract AECOM took a $337 million pre-tax charge on a construction-management job signed in 2019, turning a expected profit into a quarterly loss and cutting full-year earnings guidance. This is the main reason the stock fell to a 52-week low, because investors now doubt how well the company controls project risk.
It is the single biggest new event driving the stock down and resetting expectations.
Free cash flow guidance cut Management cut this year's free cash flow target to $300 million from $400 million and warned of about $500 million in cash pressure into early fiscal 2027. Less cash coming in means less money for buybacks, dividends or debt reduction, which weighs on the shares.
It explains the cash strain behind the selloff, not just the accounting loss.
Record backlog shows demand intact Even with the loss, AECOM's backlog rose 13% to a record $27.8 billion, with a book-to-burn ratio of 1.6, meaning it won far more work than it billed. Strong demand from U.S. infrastructure and data-center projects is a real counterweight to the bad news.
It is the main positive force keeping the long-term story alive despite the charge.
AI and UK framework expand opportunity AECOM is winning work by using AI tools on big projects and expanded its role on a $4.7 billion UK government framework into defense, nuclear and flood-risk work. These add to its addressable market and support future growth, though they are smaller than the charge's hit.
It shows the growth drivers that could offset the project loss over time.

MasTec Inc (MTZ)

Q3 202623 Jul – 23 Sep 2026

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MasTec's record backlog and raised guidance offset by weak Q2 outlook

Record backlog and raised 2026 guidance MasTec reported a record $21.4 billion backlog, up 30% from a year ago, and raised its 2026 revenue and profit outlook to $18.2 billion and $9.30 per share. Strong demand for power grid upgrades and data center connections is driving the business.
This shows the core growth story that supports the stock.
Power Delivery segment surges on utility and data-center demand MasTec's Power Delivery segment grew 19.2%, fueled by utility and data-center demand. This segment is a key part of the company's infrastructure services and reflects the ongoing need for electrical grid upgrades and connections.
It highlights a specific business segment that is performing well and driving overall growth.
Q2 earnings miss and guidance below expectations MasTec's Q2 adjusted earnings per share of $2.22 missed by a cent, and the company's guidance came in below analyst projections. The stock fell 17.7% on the weaker outlook, and some analysts cut price targets citing execution risk and weakness in the Communications segment.
This explains the main negative force that pulled the stock down during the period.
Superior Group acquisition adds data-center exposure but integration risk MasTec completed the acquisition of The Superior Group, adding data-center electrical work. While this expands MasTec's presence in a growing market, it also brings integration risk, and the bull case now depends on converting backlog and consistent execution.
It shows a strategic move that has both positive and negative implications for the stock.

August 202623 Jul – 23 Sep 2026

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MasTec's record backlog and raised guidance offset by weak Q2 outlook

Record backlog and raised 2026 guidance MasTec reported a record $21.4 billion backlog, up 30% from a year ago, and raised its 2026 revenue and profit outlook to $18.2 billion and $9.30 per share. Strong demand for power grid upgrades and data center connections is driving the business.
This shows the core growth story that supports the stock.
Power Delivery segment surges on utility and data-center demand MasTec's Power Delivery segment grew 19.2%, fueled by utility and data-center demand. This segment is a key part of the company's infrastructure services and reflects the ongoing need for electrical grid upgrades and connections.
It highlights a specific business segment that is performing well and driving overall growth.
Q2 earnings miss and guidance below expectations MasTec's Q2 adjusted earnings per share of $2.22 missed by a cent, and the company's guidance came in below analyst projections. The stock fell 17.7% on the weaker outlook, and some analysts cut price targets citing execution risk and weakness in the Communications segment.
This explains the main negative force that pulled the stock down during the period.
Superior Group acquisition adds data-center exposure but integration risk MasTec completed the acquisition of The Superior Group, adding data-center electrical work. While this expands MasTec's presence in a growing market, it also brings integration risk, and the bull case now depends on converting backlog and consistent execution.
It shows a strategic move that has both positive and negative implications for the stock.

Latest23 Jul – 23 Sep 2026

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MasTec's Record Backlog and Raised Outlook Drive Growth Story

Record Backlog and Raised 2026 Outlook MasTec reported record Q2 revenue of $4.4B, up 23%, with adjusted EPS up 49% to $2.22. The 18-month backlog hit a record $21.4B, up nearly $5B year-over-year, driven by data centers, power generation, and digital connectivity. Management raised its 2026 outlook to $18.2B revenue and $9.30 EPS, signaling strong future growth.
This is the core positive driver: record backlog and raised guidance directly boost investor confidence and future earnings visibility.
Power Delivery Segment Surges on Utility Demand MasTec's Power Delivery segment revenue jumped 19.2% to $1.25B, with EBITDA up 23.7% and margin improving to 9.1%. Backlog rose to $6.35B from $5.06B a year earlier, as utilities increase spending on transmission, grid hardening, and reliability amid rising power demand and data center development.
This shows a key segment benefiting from secular trends, supporting revenue and margin growth.
Q2 Earnings Beat and Four-Quarter Streak MasTec beat Q2 earnings and revenue estimates, with EPS of $2.22 vs. $2.19 expected and revenue of $4.37B vs. $4.30B expected. This marks the fourth consecutive quarter of surpassing consensus, demonstrating consistent execution and strengthening investor confidence.
Earnings beats are a direct positive catalyst, showing the company is performing better than expected.
Completed $648M Senior Notes Offering for Flexibility MasTec completed a $647.764 million offering of 5.850% senior notes due 2036. The proceeds add financial flexibility to fund its backlog and manage capital needs, supporting the company's ability to execute on its growth plans without straining near-term liquidity.
This capital raise provides funding for growth initiatives, a positive for executing on the backlog.

1 Aug – 18 Aug 2026

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MasTec's record backlog and data-center demand offset weak guidance

Q2 earnings miss and soft guidance MasTec's Q2 revenue beat but adjusted EPS of $2.22 missed by a cent, and full-year guidance midpoint of $9.30 came in below analyst projections. The stock fell 17.7% as investors focused on the weaker outlook rather than the sales growth.
This is the main negative force this period, explaining the sharp sell-off and near-term pressure on MTZ shares.
Record $21.4B backlog boosts visibility MasTec ended Q2 with a record $21.4 billion backlog, up 30% year over year, with strong growth in Power Delivery, Clean Energy, and Pipeline. This large pipeline of future work gives investors confidence in long-term revenue and supports the stock.
It shows the underlying demand strength that counters the weak guidance and is a key reason analysts remain positive.
Analyst fair value raised on Superior Group deal A fair value estimate rose from about $349 to $427 after updated guidance and the Superior Group acquisition, which adds power delivery and data-center exposure. Several analysts raised targets, though some cut targets on execution risk and Communications weakness.
It reflects the market's reassessment of MTZ's value after the acquisition and guidance, a major driver of price direction.
Data-center and industrial demand tailwinds Citi sees accelerating U.S. industrial growth and strong data-center investment, naming MasTec as a long-term opportunity. This macro trend boosts demand for MasTec's infrastructure services, supporting future revenue and profits.
It highlights the broader demand environment that underpins MasTec's growth story and investor optimism.

Q2 202617 Jun – 8 Jul 2026

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MasTec raises outlook, buys Superior to expand data center work

Record backlog and raised 2026 guidance MasTec raised its 2026 revenue and profit outlook after reporting a record $20.3 billion backlog, up 28% from a year ago. Strong demand for power grid upgrades and data center connections is driving the business, which supports a higher stock price.
This is the core fundamental driver behind the stock's move and the basis for the bullish outlook.
Acquisition of The Superior Group for $1.65 billion MasTec agreed to buy electrical contractor The Superior Group for about $1.65 billion in cash and stock. The deal adds data center electrical work and is expected to immediately boost revenue, profit, and cash flow, pushing the stock up.
This is a major new event that expands MasTec's data center capabilities and is expected to be immediately accretive.
Analyst reaffirms Buy and highlights AI infrastructure demand Baird reaffirmed a Buy rating with a $473 price target, and Zacks named MasTec a top heavy construction pick, citing AI and data center investments. These endorsements boost investor confidence and can lift the stock.
Analyst and industry recognition reinforce the positive demand narrative and influence investor sentiment.
Premium valuation and mixed peer results MasTec trades at a high forward P/E of 35.6, above peers, reflecting strong growth but also raising the risk of a pullback. In Q1, revenue beat estimates but guidance was the weakest among peers, and shares fell 3.5% at the time.
This provides a balanced view, noting the premium valuation and relative guidance weakness as a counterweight.

June 202617 Jun – 8 Jul 2026

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MasTec raises outlook, buys Superior to expand data center work

Record backlog and raised 2026 guidance MasTec raised its 2026 revenue and profit outlook after reporting a record $20.3 billion backlog, up 28% from a year ago. Strong demand for power grid upgrades and data center connections is driving the business, which supports a higher stock price.
This is the core fundamental driver behind the stock's move and the basis for the bullish outlook.
Acquisition of The Superior Group for $1.65 billion MasTec agreed to buy electrical contractor The Superior Group for about $1.65 billion in cash and stock. The deal adds data center electrical work and is expected to immediately boost revenue, profit, and cash flow, pushing the stock up.
This is a major new event that expands MasTec's data center capabilities and is expected to be immediately accretive.
Analyst reaffirms Buy and highlights AI infrastructure demand Baird reaffirmed a Buy rating with a $473 price target, and Zacks named MasTec a top heavy construction pick, citing AI and data center investments. These endorsements boost investor confidence and can lift the stock.
Analyst and industry recognition reinforce the positive demand narrative and influence investor sentiment.
Premium valuation and mixed peer results MasTec trades at a high forward P/E of 35.6, above peers, reflecting strong growth but also raising the risk of a pullback. In Q1, revenue beat estimates but guidance was the weakest among peers, and shares fell 3.5% at the time.
This provides a balanced view, noting the premium valuation and relative guidance weakness as a counterweight.

17 Jun – 8 Jul 2026

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MasTec raises outlook, buys Superior to expand data center work

Record backlog and raised 2026 guidance MasTec raised its 2026 revenue and profit outlook after reporting a record $20.3 billion backlog, up 28% from a year ago. Strong demand for power grid upgrades and data center connections is driving the business, which supports a higher stock price.
This is the core fundamental driver behind the stock's move and the basis for the bullish outlook.
Acquisition of The Superior Group for $1.65 billion MasTec agreed to buy electrical contractor The Superior Group for about $1.65 billion in cash and stock. The deal adds data center electrical work and is expected to immediately boost revenue, profit, and cash flow, pushing the stock up.
This is a major new event that expands MasTec's data center capabilities and is expected to be immediately accretive.
Analyst reaffirms Buy and highlights AI infrastructure demand Baird reaffirmed a Buy rating with a $473 price target, and Zacks named MasTec a top heavy construction pick, citing AI and data center investments. These endorsements boost investor confidence and can lift the stock.
Analyst and industry recognition reinforce the positive demand narrative and influence investor sentiment.
Premium valuation and mixed peer results MasTec trades at a high forward P/E of 35.6, above peers, reflecting strong growth but also raising the risk of a pullback. In Q1, revenue beat estimates but guidance was the weakest among peers, and shares fell 3.5% at the time.
This provides a balanced view, noting the premium valuation and relative guidance weakness as a counterweight.