Sterling Infrastructure vs MasTec: why the prices moved differently

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

Sterling Infrastructure, Inc. (STRL)

Q3 202616 Jul – 7 Oct 2026

▲3

Sterling's AI-driven Q2 blowout lifts backlog and guidance

Blowout Q2 earnings and raised guidance Sterling reported second-quarter EPS of $5.80 and revenue up 90% to $1.17 billion, beating expectations and prompting management to raise its full-year outlook. The strong results reassured investors that the AI-driven growth story remains on track.
This is the main new financial event of the period and directly drove the stock's rebound.
E-Infrastructure now 78% of revenue; backlog surges 116% The data-center and semiconductor unit now generates 78% of revenue, with backlog jumping 116% to a record $4.33 billion. That gives multi-year visibility and confirms Sterling's successful pivot to AI-related construction.
It shows the scale and durability of the AI-driven demand that is powering the company.
Capacity expansion and diversification Management is investing $130–$140 million in 2026 capital projects, hiring 1,000–2,000 electricians, and making small acquisitions. It is also diversifying into semiconductor and EV plant work, which broadens the growth runway beyond data centers.
These actions support future revenue growth and reduce reliance on a single end market.
Housing headwinds and execution risks The Building Solutions segment, tied to housing, saw revenue fall 1% due to high mortgage rates. Rapid expansion also brings execution risks, and the stock's 12% rebound reflects high expectations that could reverse if growth slows.
It provides the necessary counterweight, showing that not all segments are booming and risks remain.

August 202616 Jul – 7 Oct 2026

▲3

Sterling's AI-driven Q2 blowout lifts backlog and guidance

Blowout Q2 earnings and raised guidance Sterling reported second-quarter EPS of $5.80 and revenue up 90% to $1.17 billion, beating expectations and prompting management to raise its full-year outlook. The strong results reassured investors that the AI-driven growth story remains on track.
This is the main new financial event of the period and directly drove the stock's rebound.
E-Infrastructure now 78% of revenue; backlog surges 116% The data-center and semiconductor unit now generates 78% of revenue, with backlog jumping 116% to a record $4.33 billion. That gives multi-year visibility and confirms Sterling's successful pivot to AI-related construction.
It shows the scale and durability of the AI-driven demand that is powering the company.
Capacity expansion and diversification Management is investing $130–$140 million in 2026 capital projects, hiring 1,000–2,000 electricians, and making small acquisitions. It is also diversifying into semiconductor and EV plant work, which broadens the growth runway beyond data centers.
These actions support future revenue growth and reduce reliance on a single end market.
Housing headwinds and execution risks The Building Solutions segment, tied to housing, saw revenue fall 1% due to high mortgage rates. Rapid expansion also brings execution risks, and the stock's 12% rebound reflects high expectations that could reverse if growth slows.
It provides the necessary counterweight, showing that not all segments are booming and risks remain.

Latest22 Jul – 7 Oct 2026

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Sterling's Data Center and Chip Plant Boom Drives Record Backlog and Margins

Electrical capacity squeeze sparks M&A and hiring push Sterling's electrical business filled up in 90 days, far faster than expected. It plans small acquisitions and is adding 1,000-2,000 electricians, backed by $181 million net cash and a $1.5 billion credit line. This expands capacity to capture more data center work, lifting future revenue.
Shows how Sterling is spending to meet demand, a key driver of future growth.
Semiconductor and EV plant wins broaden growth beyond data centers A large Northeast semiconductor project is ahead of schedule, with big revenue expected in Q3 2026. Sterling also won initial work on an Atlanta EV plant, with more awards possible. This diversifies its mission-critical backlog, supporting revenue and profit growth.
New project wins show demand is spreading to new areas, a fresh catalyst for the stock.
CapEx raised to $130-$140 million for 2026 capacity expansion Sterling is sharply increasing 2026 capital spending to $130-$140 million, up from $77.3 million in 2025. The money goes to equipment, electrical prefab facilities, and training. This investment aims to ease capacity limits and support more than 100% E-Infrastructure revenue growth.
Shows concrete spending plans to fuel growth, a new detail for investors.
Margin gains and record backlog drive 12% share rebound Sterling's adjusted EBITDA margin rose to 22%, up 150 basis points, as it shifts to higher-margin work. Q2 revenue jumped 90% to $1.17 billion and EPS surged 116% to $5.80. Signed backlog hit a record $4.33 billion, up 116%, pushing shares up 12% in a month.
Summarizes the latest financial results and stock move, the clearest evidence of why STRL is rising.

16 Jul – 2 Sep 2026

▲3

AI Data Center Demand Drives Sterling's Blowout Q2 and Record Backlog

Q2 earnings beat and raised guidance Sterling reported Q2 earnings of $5.80 per share, beating estimates, and revenue of $1.17 billion, up 90% year over year. Management raised full-year 2026 revenue and earnings guidance, signaling strong momentum. This positive surprise supports a higher stock price as investors gain confidence in future growth.
This is the core new financial event that directly impacts STRL's valuation and investor sentiment.
E-Infrastructure drives growth with 116% backlog surge Sterling's E-Infrastructure segment, focused on data centers and semiconductors, now accounts for 78% of revenue and saw revenue jump to $905 million from $310 million. Backlog soared 116% to $4.33 billion, providing multi-year visibility. This shift to higher-margin work boosts long-term earnings potential.
It explains the structural driver behind Sterling's growth and why the backlog surge matters for future revenue.
AI data center buildout accelerates across industry Hyperscaler demand for AI data centers is fueling record results across peers like Comfort Systems and Vertiv. Sterling's CEO noted projects are now scoped to last up to 12 years, indicating a long runway. This industry-wide trend supports sustained demand for Sterling's services.
It shows the broader secular tailwind that underpins Sterling's growth story and investor enthusiasm.
Housing headwinds offset by infrastructure pivot Sterling's Building Solutions segment faces pressure from high mortgage rates, with revenue down 1% and modest declines expected. However, the company is pivoting to higher-margin E-Infrastructure, which is growing over 100%. This mix shift should cushion the impact on overall profitability.
It provides a balanced view of risks and offsets, showing that not all segments are booming.

Q2 202618 Jun – 2 Jul 2026

▲3

Sterling's AI data-center pivot drives record backlog and raised outlook

Q1 revenue nearly doubles on data-center and chip work Sterling's first-quarter revenue jumped 92% to $825.7 million, earnings per share rose 120%, and combined backlog reached $5.15 billion. The E-Infrastructure unit building data centers and chip plants drove the surge, giving investors multi-year visibility and pushing the stock higher.
This is the core fundamental result that explains why the business and stock are re-rated.
Analysts sharply raise earnings estimates, Zacks Strong Buy Zacks gave Sterling its top Strong Buy rank after the current-quarter profit estimate rose 15.4% in 30 days and the next-year estimate climbed 5.5%. Rising estimates often pull in more buyers because they signal the company will earn more than previously thought.
Estimate revisions are a direct, forward-looking driver of investor demand for the shares.
Texas boom and Stone Ridge deal expand growth runway Sterling flagged accelerating Texas infrastructure demand, with CEC's backlog up $1.2 billion since year-end. It also closed the Stone Ridge acquisition, adding $180–200 million of expected 2026 revenue and Pacific Northwest reach. Both widen future sales and support the bull case.
These are new expansion moves that add revenue and reinforce the growth story.
Concentration risk as peers chase same AI and chip spending Sterling's pivot makes it a key contractor for hyperscale data centers and semiconductor plants, but it now depends on a few fast-growing customers and large projects. Rivals like Quanta and KBR compete for the same AI and chip budgets, so any slowdown in that spending would hit results hard.
This is the main counterweight: the growth is real but concentrated and competitive.

June 202618 Jun – 2 Jul 2026

▲3

Sterling's AI data-center pivot drives record backlog and raised outlook

Q1 revenue nearly doubles on data-center and chip work Sterling's first-quarter revenue jumped 92% to $825.7 million, earnings per share rose 120%, and combined backlog reached $5.15 billion. The E-Infrastructure unit building data centers and chip plants drove the surge, giving investors multi-year visibility and pushing the stock higher.
This is the core fundamental result that explains why the business and stock are re-rated.
Analysts sharply raise earnings estimates, Zacks Strong Buy Zacks gave Sterling its top Strong Buy rank after the current-quarter profit estimate rose 15.4% in 30 days and the next-year estimate climbed 5.5%. Rising estimates often pull in more buyers because they signal the company will earn more than previously thought.
Estimate revisions are a direct, forward-looking driver of investor demand for the shares.
Texas boom and Stone Ridge deal expand growth runway Sterling flagged accelerating Texas infrastructure demand, with CEC's backlog up $1.2 billion since year-end. It also closed the Stone Ridge acquisition, adding $180–200 million of expected 2026 revenue and Pacific Northwest reach. Both widen future sales and support the bull case.
These are new expansion moves that add revenue and reinforce the growth story.
Concentration risk as peers chase same AI and chip spending Sterling's pivot makes it a key contractor for hyperscale data centers and semiconductor plants, but it now depends on a few fast-growing customers and large projects. Rivals like Quanta and KBR compete for the same AI and chip budgets, so any slowdown in that spending would hit results hard.
This is the main counterweight: the growth is real but concentrated and competitive.

18 Jun – 2 Jul 2026

▲3

Sterling's AI data-center pivot drives record backlog and raised outlook

Q1 revenue nearly doubles on data-center and chip work Sterling's first-quarter revenue jumped 92% to $825.7 million, earnings per share rose 120%, and combined backlog reached $5.15 billion. The E-Infrastructure unit building data centers and chip plants drove the surge, giving investors multi-year visibility and pushing the stock higher.
This is the core fundamental result that explains why the business and stock are re-rated.
Analysts sharply raise earnings estimates, Zacks Strong Buy Zacks gave Sterling its top Strong Buy rank after the current-quarter profit estimate rose 15.4% in 30 days and the next-year estimate climbed 5.5%. Rising estimates often pull in more buyers because they signal the company will earn more than previously thought.
Estimate revisions are a direct, forward-looking driver of investor demand for the shares.
Texas boom and Stone Ridge deal expand growth runway Sterling flagged accelerating Texas infrastructure demand, with CEC's backlog up $1.2 billion since year-end. It also closed the Stone Ridge acquisition, adding $180–200 million of expected 2026 revenue and Pacific Northwest reach. Both widen future sales and support the bull case.
These are new expansion moves that add revenue and reinforce the growth story.
Concentration risk as peers chase same AI and chip spending Sterling's pivot makes it a key contractor for hyperscale data centers and semiconductor plants, but it now depends on a few fast-growing customers and large projects. Rivals like Quanta and KBR compete for the same AI and chip budgets, so any slowdown in that spending would hit results hard.
This is the main counterweight: the growth is real but concentrated and competitive.

MasTec Inc (MTZ)

Q3 202623 Jul – 23 Sep 2026

▲2▼1

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

▲2▼1

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

▲4

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

▲3▼1

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

▲3

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

▲3

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

▲3

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.