Primoris Services vs MasTec: why the prices moved differently

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

Primoris Services Corporation (PRIM)

Q3 20267 Jul – 1 Oct 2026

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Primoris Plunges on Guidance Cuts, Overruns, and Legal Woes

Securities Class Actions Multiple securities class actions alleged Primoris misled investors about renewable project costs and oversight, creating legal costs, uncertainty, and management distraction.
New legal escalation adds uncertainty and costs, pressuring the stock.
Guidance Slashed Again Management cut EBITDA guidance from $560–580 million to $480–500 million, then slashed EPS guidance to $1.30–$1.85 from $4.05–$4.25, signaling deeper trouble.
New guidance cuts directly reduce earnings expectations and investor confidence.
Renewable Project Overruns Primoris disclosed major cost overruns and delays on six renewable projects, cutting 2026 renewables revenue by roughly 30% (~$900 million).
New disclosures quantify the financial impact of project problems.
Fermi Turbines Arrive Fermi's first Siemens turbines arrived for its Texas power project, where Primoris performs balance-of-plant work on six turbines, supporting future data-center-driven gas power revenue.
New positive development offers a potential offset to renewables troubles.

August 20267 Jul – 1 Oct 2026

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Primoris Plunges on Renewables Cost Overruns, Guidance Cuts, and Lawsuits

Renewables cost overruns and revenue collapse Primoris revealed major cost overruns and delays on six renewable energy projects, cutting 2026 renewables revenue by 30% (about $900 million). This signals poor project execution and weak demand, directly hurting profits and pushing the stock down.
This is the core operational problem driving the stock's decline and the guidance cuts.
Massive guidance cuts and COO departure Primoris slashed full-year adjusted EBITDA guidance from $560–$580 million to $480–$500 million, then later cut EPS guidance to $1.30–$1.85 from $4.05–$4.25. The COO abruptly left, raising concerns about oversight. These cuts crushed investor confidence and the stock.
Guidance cuts and leadership turnover are direct negative catalysts for the stock price.
Securities fraud investigations and class actions Multiple law firms (Pomerantz, Robbins, Glancy, Hagens Berman) are investigating or have filed class actions alleging Primoris misled investors about project management and cost forecasting. This legal risk could lead to fines, settlements, and further reputational damage, weighing on the stock.
Legal investigations and lawsuits add regulatory and financial uncertainty that can pressure the stock.
Stock price collapse and market cap erosion Primoris shares fell 50% on May 6, another 21.6% on June 22, and closed at $74.52 on September 30, down about 40% year-to-date. Over $7.8 billion in market value was wiped out, reflecting severe investor pessimism.
The magnitude of the stock decline shows the market's reaction to the underlying problems.

Latest7 Jul – 1 Oct 2026

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Primoris Plunges on Renewables Cost Overruns, Guidance Cuts, and Lawsuits

Renewables cost overruns and revenue collapse Primoris revealed major cost overruns and delays on six renewable energy projects, cutting 2026 renewables revenue by 30% (about $900 million). This signals poor project execution and weak demand, directly hurting profits and pushing the stock down.
This is the core operational problem driving the stock's decline and the guidance cuts.
Massive guidance cuts and COO departure Primoris slashed full-year adjusted EBITDA guidance from $560–$580 million to $480–$500 million, then later cut EPS guidance to $1.30–$1.85 from $4.05–$4.25. The COO abruptly left, raising concerns about oversight. These cuts crushed investor confidence and the stock.
Guidance cuts and leadership turnover are direct negative catalysts for the stock price.
Securities fraud investigations and class actions Multiple law firms (Pomerantz, Robbins, Glancy, Hagens Berman) are investigating or have filed class actions alleging Primoris misled investors about project management and cost forecasting. This legal risk could lead to fines, settlements, and further reputational damage, weighing on the stock.
Legal investigations and lawsuits add regulatory and financial uncertainty that can pressure the stock.
Stock price collapse and market cap erosion Primoris shares fell 50% on May 6, another 21.6% on June 22, and closed at $74.52 on September 30, down about 40% year-to-date. Over $7.8 billion in market value was wiped out, reflecting severe investor pessimism.
The magnitude of the stock decline shows the market's reaction to the underlying problems.

July 202614 Jul – 28 Jul 2026

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Legal Fallout Mounts as Fermi Contract Offers Some Offset

Securities Class Actions Pile Up Multiple law firms filed class action lawsuits against Primoris, alleging it misled investors about renewable project costs and oversight. These suits create legal costs and uncertainty, keeping pressure on the stock as investors weigh potential damages and management distraction.
This is the main new development this period, escalating legal risk that directly affects investor confidence and PRIM's price.
Fermi Turbine Delivery Advances Primoris Contract Fermi's first Siemens turbines arrived for its Texas power project, where Primoris is doing balance-of-plant work on six turbines. This shows the contract is progressing, supporting future revenue from data-center-driven gas power demand, a bright spot amid renewables troubles.
This is a new positive update on a previously announced contract, showing execution and potential revenue that could help offset negative news.

14 Jul – 28 Jul 2026

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Legal Fallout Mounts as Fermi Contract Offers Some Offset

Securities Class Actions Pile Up Multiple law firms filed class action lawsuits against Primoris, alleging it misled investors about renewable project costs and oversight. These suits create legal costs and uncertainty, keeping pressure on the stock as investors weigh potential damages and management distraction.
This is the main new development this period, escalating legal risk that directly affects investor confidence and PRIM's price.
Fermi Turbine Delivery Advances Primoris Contract Fermi's first Siemens turbines arrived for its Texas power project, where Primoris is doing balance-of-plant work on six turbines. This shows the contract is progressing, supporting future revenue from data-center-driven gas power demand, a bright spot amid renewables troubles.
This is a new positive update on a previously announced contract, showing execution and potential revenue that could help offset negative news.

Q2 202622 Jun – 2 Jul 2026

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Primoris Slashes 2026 Guidance on Renewables Overruns; COO Exits

Guidance Cut and COO Departure Primoris slashed its 2026 profit forecast to $2.05–$2.60 per share, less than half its prior range, because of cost overruns and delays in six renewable energy projects. The COO left immediately. This crushed the stock, down over 30%, as investors lost confidence in management and the renewables business.
This is the core new event that directly caused the stock's sharp decline and answers why PRIM is moving.
Renewables Revenue to Drop 30% The company said 2026 renewables revenue will fall about 30%, or $900 million, from 2025 levels due to problems in six projects. This follows a May disclosure of a 40% gross profit plunge in its core Energy segment. Together, these wiped out over $7.8 billion in market value and raised concerns about project execution.
It quantifies the scale of the renewables problems and shows the cumulative damage, which is central to the negative outlook.
Securities Fraud Investigations Law firms Hagens Berman, Bragar Eagel & Squire, and Pomerantz are investigating whether Primoris misled investors about its renewables business before the May 5 and June 22 disclosures. These probes add legal uncertainty and potential costs, keeping pressure on the stock.
It introduces a new legal risk that could further hurt the stock and investor confidence.
Fermi Gas Turbine Contract and Index Inclusion Primoris won a contract to build balance of plant for six gas turbines at Fermi's Texas power project, supporting data centers. It also moved into the Russell 1000 and Midcap indexes, which may attract more institutional investors. These positives offer some offset to the renewables troubles.
It highlights new business wins and index changes that could support the stock despite the negative guidance news.

June 202622 Jun – 2 Jul 2026

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Primoris Slashes 2026 Guidance on Renewables Overruns; COO Exits

Guidance Cut and COO Departure Primoris slashed its 2026 profit forecast to $2.05–$2.60 per share, less than half its prior range, because of cost overruns and delays in six renewable energy projects. The COO left immediately. This crushed the stock, down over 30%, as investors lost confidence in management and the renewables business.
This is the core new event that directly caused the stock's sharp decline and answers why PRIM is moving.
Renewables Revenue to Drop 30% The company said 2026 renewables revenue will fall about 30%, or $900 million, from 2025 levels due to problems in six projects. This follows a May disclosure of a 40% gross profit plunge in its core Energy segment. Together, these wiped out over $7.8 billion in market value and raised concerns about project execution.
It quantifies the scale of the renewables problems and shows the cumulative damage, which is central to the negative outlook.
Securities Fraud Investigations Law firms Hagens Berman, Bragar Eagel & Squire, and Pomerantz are investigating whether Primoris misled investors about its renewables business before the May 5 and June 22 disclosures. These probes add legal uncertainty and potential costs, keeping pressure on the stock.
It introduces a new legal risk that could further hurt the stock and investor confidence.
Fermi Gas Turbine Contract and Index Inclusion Primoris won a contract to build balance of plant for six gas turbines at Fermi's Texas power project, supporting data centers. It also moved into the Russell 1000 and Midcap indexes, which may attract more institutional investors. These positives offer some offset to the renewables troubles.
It highlights new business wins and index changes that could support the stock despite the negative guidance news.

22 Jun – 2 Jul 2026

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Primoris Slashes 2026 Guidance on Renewables Overruns; COO Exits

Guidance Cut and COO Departure Primoris slashed its 2026 profit forecast to $2.05–$2.60 per share, less than half its prior range, because of cost overruns and delays in six renewable energy projects. The COO left immediately. This crushed the stock, down over 30%, as investors lost confidence in management and the renewables business.
This is the core new event that directly caused the stock's sharp decline and answers why PRIM is moving.
Renewables Revenue to Drop 30% The company said 2026 renewables revenue will fall about 30%, or $900 million, from 2025 levels due to problems in six projects. This follows a May disclosure of a 40% gross profit plunge in its core Energy segment. Together, these wiped out over $7.8 billion in market value and raised concerns about project execution.
It quantifies the scale of the renewables problems and shows the cumulative damage, which is central to the negative outlook.
Securities Fraud Investigations Law firms Hagens Berman, Bragar Eagel & Squire, and Pomerantz are investigating whether Primoris misled investors about its renewables business before the May 5 and June 22 disclosures. These probes add legal uncertainty and potential costs, keeping pressure on the stock.
It introduces a new legal risk that could further hurt the stock and investor confidence.
Fermi Gas Turbine Contract and Index Inclusion Primoris won a contract to build balance of plant for six gas turbines at Fermi's Texas power project, supporting data centers. It also moved into the Russell 1000 and Midcap indexes, which may attract more institutional investors. These positives offer some offset to the renewables troubles.
It highlights new business wins and index changes that could support the stock despite the negative guidance news.

MasTec Inc (MTZ)

Q3 20261 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.

August 20261 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.

Latest1 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

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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

▲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.