Is IESC a Buy? What to Consider in 2026
Short answer
The bull case for IES Holdings (IESC) rests on Data center and AI infrastructure demand: The Communications and Infrastructure Solutions segments have become the growth engine, driven by electrical and technology work for data centers and mission-critical facilities. Revenue (FY2025) is ~$3.37 billion. If you believe that thesis holds, the real questions become position sizing and overlap, not timing. The main risk to that view: IES is a project-based contractor whose results depend on construction activity, labor availability, and project execution, all of which are cyclical. Whether IESC is a buy comes down to whether you believe the thesis. This is informational, not a recommendation, and Walnut is not an investment adviser.
IES Holdings designs, installs, and maintains integrated electrical and technology systems across the United States, operating through four segments: Communications (network and electrical infrastructure for data centers and mission-critical facilities), Infrastructure Solutions (custom engineered products such as switchgear and power distribution), Residential (electrical work for single and multi-family housing), and Commercial & Industrial. In fiscal 2025 (year ended September 30, 2025), the company generated roughly $3.37 billion in revenue, with the Communications segment at about $1.14 billion (up 47%) and Infrastructure Solutions at about $498.7 million (up 42%), both driven by data center demand, while the Residential segment (about $1.30 billion) declined 6% on softer housing activity. The investment picture centers on whether the data center and AI infrastructure cycle keeps feeding IES's order book. Backlog reached about $3.9 billion as of March 31, 2026, up sharply since fiscal year end, and net income attributable to IES rose about 40% in fiscal 2025 to roughly $306 million. The company is also an active acquirer (it closed the Gulf Island purchase for about $143 million net of cash in January 2026) and carries a valuation that already reflects strong growth expectations. The offsetting reality is that IES is a project-services contractor exposed to construction cycles, labor availability, project execution, and a residential segment tied to housing demand.
What's the case for buying IESC?
1. Data center and AI infrastructure demand
The Communications and Infrastructure Solutions segments have become the growth engine, driven by electrical and technology work for data centers and mission-critical facilities. Communications revenue grew about 47% in fiscal 2025 and backlog expanded to roughly $3.9 billion by March 2026. This concentration turns IES into a way to express a view on the durability of the current data center capital spending wave.
2. Backlog and margin expansion
Rising backlog and remaining performance obligations (about $2.3 billion as of March 2026) give visibility into future revenue. Operating income grew about 27% in fiscal 2025 to roughly $383.5 million, outpacing revenue growth of 17%, which indicates improving project mix and operating leverage. Sustained margin gains would depend on continued strong demand and disciplined project selection.
3. Acquisitions and capital allocation
IES has grown partly through acquisitions, including the Gulf Island deal (about $143 million net of cash) closed in January 2026, and has historically repurchased shares. Bolt-on deals can add capabilities and geographic reach in electrical and infrastructure services. Execution and integration of acquired businesses is a recurring factor in how the company compounds.
4. Diversified end markets beyond data centers
Beyond data centers, IES serves residential housing, commercial and industrial construction, and custom engineered products. The Commercial & Industrial segment grew about 16% in fiscal 2025 while Residential declined about 6% on housing softness. This mix provides some diversification but also ties parts of the business to interest-rate-sensitive construction cycles.
What are the risks to IESC?
IES is a project-based contractor whose results depend on construction activity, labor availability, and project execution, all of which are cyclical. A meaningful share of recent growth is concentrated in data center demand, so a slowdown in AI or hyperscaler capital spending could pressure the Communications and Infrastructure Solutions segments. The Residential segment is exposed to housing demand and interest rates, which have already weighed on that unit. The stock trades at a valuation (trailing P/E near 29 as of May 2026) that embeds continued strong growth, leaving room for multiple compression if results disappoint. Acquisitions add integration risk and can complicate comparisons across periods.
How is IESC valued? (as of MAY 2026)
Snapshot for IESC as of July 2026, sourced from Yahoo Finance and may be delayed. Valuation figures move with price and earnings; verify the current numbers with your broker before deciding.
- Revenue (FY2025): ~$3.37 billion
- Revenue (TTM, Mar 2026): ~$3.6 billion
- Net income (FY2025): ~$306 million
- Operating income (FY2025): ~$383.5 million
- Backlog (Mar 2026): ~$3.9 billion
- Market cap: ~$7.5 billion
- Trailing P/E: ~29x
IES grew fiscal 2025 revenue about 17% and net income about 40%, with data center demand lifting the Communications and Infrastructure Solutions segments. As of May 2026 the shares carried a trailing P/E near 29 and a forward P/E near 23, valuations that reflect expectations for continued growth. Fiscal Q2 2026 (quarter ended March 2026) revenue rose about 17% year over year to roughly $974 million.
How do you decide if IESC is a buy?
Rather than asking whether IESC is a buy in the abstract, it tends to help to answer four questions:
- Thesis: do you believe the case above, and is it still true today?
- Time horizon: a single stock can be volatile, so a longer horizon absorbs more of the swings.
- Position sizing: a thesis can be right and the sizing still wrong; decide how much of your portfolio one name should be.
- Overlap: check whether you already hold IESC indirectly through an index or sector ETF before adding more.
For the full picture, see the IESC stock guide (what the company does, the ETFs that hold it, similar stocks, and the themes it fits). In Walnut you can ask its AI about IESC against your real portfolio and see your actual exposure before deciding.
The bottom line on IESC
The bottom line: IES Holdings's story right now is Data center and AI infrastructure demand, with revenue (fy2025) at ~$3.37 billion. If you believe that narrative continues, the call is about sizing IESC sensibly and checking overlap with what you own; if you doubt it (the risk: iES is a project-based contractor whose results depend on construction activity, labor availability, and project execution, all of which are cyclical.), it is not for you. Decide from the thesis, not the ticker. Walnut is not an investment adviser.
Build a basket around IESC with Walnut
Use IES Holdings as one constituent in a thematic basket Walnut's AI helps you assemble. Describe a thesis you believe in, the AI proposes the holdings and weights, and you approve before any broker order.
FAQ
Is IESC a good stock to buy right now?
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The case for IES Holdings right now is Data center and AI infrastructure demand, with revenue (fy2025) at ~$3.37 billion. If you believe that thesis holds, IESC is a way to own it and the real questions are sizing and overlap, not timing; the main risk to that view is iES is a project-based contractor whose results depend on construction activity, labor availability, and project execution, all of which are cyclical. So it comes down to whether you believe the thesis. Walnut is not an investment adviser and this is not a recommendation.
What does IES Holdings do?
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IES Holdings designs, installs, and maintains integrated electrical and technology systems across the United States, operating through four segments: Communications (network and el
What are the main risks of IESC?
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IES is a project-based contractor whose results depend on construction activity, labor availability, and project execution, all of which are cyclical. A meaningful share of recent growth is concentrated in data center demand, so a slowdown in AI or hyperscaler capital spending could pressure the Communications and Infrastructure Solutions segments. The Residential segment is exposed to housing demand and interest rates, which have already weighed on that unit. The stock trades at a valuation (trailing P/E near 29 as of May 2026) that embeds continued strong growth, leaving room for multiple compression if results disappoint. Acquisitions add integration risk and can complicate comparisons across periods.
What does IES Holdings do?
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IES Holdings designs, installs, and maintains integrated electrical and technology systems and supplies infrastructure products across the United States. It operates through Communications, Infrastructure Solutions, Residential, and Commercial & Industrial segments.
Why is IESC considered a data center stock?
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Its Communications and Infrastructure Solutions segments provide electrical and technology infrastructure for data centers and mission-critical facilities. Data center demand drove Communications revenue up about 47% and Infrastructure Solutions up about 42% in fiscal 2025.
How big is IES Holdings?
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IES generated roughly $3.37 billion in revenue in fiscal 2025 and carried a market capitalization near $7.5 billion as of May 2026. It is a mid-cap company listed on the Nasdaq under the ticker IESC.
Is IES Holdings profitable?
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Yes. Net income attributable to IES was roughly $306 million in fiscal 2025, up about 40% from the prior year, and operating income was about $383.5 million. The company has been consistently profitable in recent years.
Walnut is informational and is not an investment adviser. This page is educational and not a recommendation to buy or sell IESC; figures are approximate and dated, and your own situation, time horizon, and risk tolerance should drive any decision. Verify current data before investing.