WESCO International, Inc. (WCC) | The Buildout — AI Infrastructure
The Verdict
WESCO International is a distributor, not a manufacturer. It buys electrical, communications, utility and security products from manufacturers and moves them, along with logistics and lifecycle services, to the contractors, utilities and data center operators who build physical infrastructure. In the AI buildout its part is the connective tissue between the power grid and the server rack: cable, switchgear, transformers, racks, cooling equipment and the crews that install and maintain them. Management describes this as a 'power to compute' model that spans the full data center lifecycle, from the grid to the building to the rack.
| Market Cap | — |
| Revenue (TTM) | $25.0B |
| Revenue Growth | +12.5% |
| EBITDA Margin (TTM) | 6.3% |
| Net Debt | $5.9B |
| Earnings Beats | 4 of 7 |
| P/E (TTM) | — |
| EV/EBITDA (TTM) | — |
What We Like
- Data centers are now the largest end market across all three segments — roughly 20-24% of revenue on the company's own end-market disclosure — and grew about 45% year over year in Q2 FY2026 to roughly $1.5 billion.
- Backlog hit a record and rose 60% year over year, with CSS up 95%, UBS up 80% and EES up 30%. Management attributes the growth to multiyear customer commitments rather than cyclical order flow.
- The margin thesis has delivered in reported numbers: CSS posted a record 10.2% adjusted EBITDA margin, up 140 basis points and its first double-digit quarter; EES reached 9.2% and UBS returned to 10%.
- Guidance was raised twice in three months. FY2026 reported sales growth is now guided to 10-12% and adjusted EBITDA margin to 6.9-7.1%, a raise of more than $100 million at the midpoint.
- Net leverage fell to about 3.0x from 3.4x at year-end, and the $1.5 billion bond refinancing completed in Q1 FY2026 is expected to save more than $20 million in annualized interest expense.
What We’re Watching
- Free cash flow guidance was cut to $300-600 million from $500-800 million — a $200 million midpoint reduction — as working capital intensity ran at about 20% of sales. Management's DSO/DIO initiatives carry no target date.
- Data center sales growth decelerated from about 70% in Q1 to about 45% in Q2 FY2026. Management attributes the change entirely to project timing.
- Q3 FY2026 adjusted EBITDA margin is guided slightly lower sequentially on business mix, even as sales grow low double digits — tempering a straight-line margin-expansion story.
- Public power competitive dynamics remain a margin headwind in UBS, and the grid services award cited as driving UBS's backlog growth goes to a single unnamed hyperscale customer with no disclosed value, term or shipment schedule.
The thesis is strengthening on the demand and margin evidence and qualified on cash. Two guidance raises in three months, record backlog in all three segments, and CSS's first double-digit margin quarter are reported results, not forecasts. Against that, the free cash flow guide was cut by $200 million at the midpoint, the data center growth rate is decelerating off a much larger base, and management's 'very strong 2027' framing is a forward claim the evidence cannot yet check. The open question is whether record backlog converts on the schedule implied by the more-than-30% data center outlook, and whether working capital bends back below about 20% of sales.
Earnings Beat
WESCO reported Q2 FY2026 revenue of $6,665 million, up 13% year over year, with gross margin expanding 70 basis points to 21.8%. Adjusted diluted EPS was a record $4.57, up 35%. Data center sales reached about $1.5 billion, up roughly 45% year over year and a little over 20% of trailing-twelve-month sales, and the quarter closed with record backlog up 60% year over year.
| Metric | Q2 FY2026 | Q1 FY2026 | Q2 FY2025 | YoY |
|---|---|---|---|---|
| Revenue | $6.7B | $6.1B | $5.9B | +13.0% |
| Gross margin | 21.8% | 21.2% | 21.1% | +70bps |
| EBITDA | $433M | $344M | $370M | +17.0% |
| EPS | $4.23 | $3.11 | $3.53 | +19.8% |
| Data center sales | $1.5B | $1.4B | n/a | +45% YoY |
| Adjusted diluted EPS | $4.57 | $3.37 | n/a | +35% YoY |
This impressive backlog growth was fueled by multiyear customer commitments demonstrating our transformation into a leading infrastructure solutions provider.— WESCO management, 2026-07-30
Management tone: The tone stepped up between the two calls in the source material. On the Q1 FY2026 call in April, management raised the full-year sales and EPS outlook on record first-quarter results. By the Q2 FY2026 call in July the language was more expansive — 'not a one-trick pony,' 'eye popping growth numbers,' 'hyper sales growth' — and the CEO said the backlog 'sets the table for a very strong 2027.' CFO Indraneel Dev, new to the role after Dave Schulz's retirement, presented results and guidance himself and detailed the free cash flow cut and the working capital response. Management answered segment pricing and DSO/DIO questions directly, and declined to name the grid services customer or size that pipeline.
Management Guidance
For FY2026, management guides reported sales growth of 10-12%, with total reported sales of $26 billion at the midpoint, and organic growth of 9-11%. Adjusted EBITDA margin is guided to 6.9-7.1%, a raise of more than $100 million at the midpoint in dollar terms. Adjusted diluted EPS is guided to $16.00-$17.50, a $0.75 midpoint raise. Free cash flow is guided to $300-600 million, cut from $500-800 million 'given the continued growth in the business, and the associated working capital requirements.' By segment: CSS mid-to-high teens with CSS data center sales above 30% year over year, EES high-single-digit, UBS mid-single-digit. For Q3 FY2026, management guides sales to low-double-digit growth 'based on current customer forecasts and difficult September 2025 comparison,' with adjusted EBITDA margin slightly lower sequentially 'reflecting the anticipated mix of business expected in the quarter.' Capital allocation priorities are reaffirmed.
Trajectory
The last four quarters show a flat stretch and then a step up. Revenue ran $6,199 million in Q3 FY2025, $6,069 million in Q4, and $6,080 million in Q1 FY2026, then rose 9.6% sequentially to $6,665 million in Q2 FY2026 — about 13% above the year-ago quarter. Gross margin moved from 21.1% a year ago to 21.8%. On the company's adjusted basis, EBITDA margin expanded 60 basis points in each of the last two quarters, reaching 7.3% in Q2, with CSS at a record 10.2% and EES at 9.2%. Management says the growth is broad: sales excluding data centers grew mid-single-digit, and record backlog rose 60%. The offset is cash: free cash flow fell to $25.5 million in Q2 FY2026 from $198.0 million in Q1, and the full-year cash guide was cut.
The Model
The model projects FY+1 revenue of $26,385 million and EBITDA of $1,662 million, a 6.3% margin, then FY+2 revenue of $29,900 million and EBITDA of $2,030 million, a 6.79% margin. The model's EBITDA is operating income plus D&A as reported, a narrower basis than the company's adjusted EBITDA. The near-term anchor is the record backlog, up 60% year over year, and the raised FY2026 outlook for reported sales growth of 10-12%. FY+2 steps up on the outlook for data center sales growth above 30%, the multiyear grid services award now shipping in UBS, and the operating leverage management says arrives from 2027 onward.
| Metric | FY2025 | Next FY (E) | Following FY (E) |
|---|---|---|---|
| Revenue | $23.5B | $26.4B | $29.9B |
| YoY Growth | — | +12.2% | +13.3% |
| EBITDA | $1.5B | $1.7B | $2.0B |
| EBITDA Margin | 6.2% | 6.3% | 6.8% |
Projections are the median of 5 independent model runs. The model’s revenue sits 7.4% above analyst consensus.
For FY2026, management guides reported sales growth of 10-12%, with total reported sales of $26 billion at the midpoint, and organic growth of 9-11%. Adjusted EBITDA margin is guided to 6.9-7.1%, a raise of more than $100 million at the midpoint in dollar terms. Adjusted diluted EPS is guided to $16.00-$17.50, a $0.75 midpoint raise. Free cash flow is guided to $300-600 million, cut from $500-800 million 'given the continued growth in the business, and the associated working capital requirements.' By segment: CSS mid-to-high teens with CSS data center sales above 30% year over year, EES high-single-digit, UBS mid-single-digit. For Q3 FY2026, management guides sales to low-double-digit growth 'based on current customer forecasts and difficult September 2025 comparison,' with adjusted EBITDA margin slightly lower sequentially 'reflecting the anticipated mix of business expected in the quarter.' Capital allocation priorities are reaffirmed.
What Could Go Right — and Wrong
- CSS data center sales grow above 30% for FY2026 as guided, validating the project-timing explanation and converting record CSS backlog into revenue.
- Working capital intensity bends back below about 20% of sales as the DSO/DIO initiatives take hold, moving free cash flow back toward the prior $500-800 million range.
- Grid services wins a second contract from a pipeline management calls 'very large,' turning a single award into a franchise and lifting UBS margin structurally.
- Industrial end-market growth inflects as OEM continues to grow strong double digits, broadening growth beyond data centers and supporting management's industrial super cycle framing.
- Newark Engineering scales into a broader cooling and thermal business through OneWesco cross-selling, adding margin-accretive revenue earlier in the data center lifecycle.
- Data center sales growth stalls below the more-than-30% FY2026 outlook after decelerating from about 70% in Q1 to about 45% in Q2.
- Free cash flow misses the lowered $300-600 million guide, suggesting working capital consumption is not growth-funded but a structural cash drain.
- The unnamed hyperscale grid services award ships slower or lumpier than implied, weakening the UBS margin story that rests on a single undisclosed customer.
- Public power margin pressure re-intensifies and UBS falls back below 10% adjusted EBITDA margin.
- Power and labor constraints that management calls the industry's throttling factor delay backlog conversion even if demand holds.
Looking Ahead
The next twelve months turn on conversion and cash. Q3 FY2026 results are next, guided to low-double-digit sales growth with adjusted EBITDA margin slightly lower sequentially on mix; no Q3 call date is given in the source material. Beyond that, the tests are whether the more-than-30% full-year data center outlook is delivered, whether the DSO/DIO work bends working capital back below about 20% of sales and restores free cash flow toward the lower end of the $300-600 million guide, and whether the grid services award converts on schedule. Management points to 2027, 2028 and 2029 for 'very strong' operating cost leverage and has promised a fuller update on the digital transformation program at its next Investor Day, for which no date is given in the source material.
- 2026-09-30Quarterly dividend payment — $0.50 per share declared August 27, 2026; unchanged from the prior rate.
- No date givenQ3 FY2026 earnings — No date disclosed in the source material; tests the low-double-digit sales guide and the mix-driven margin step-down.
- FY2026CSS data center outlook — Full-year test of the raised target of more than 30% year-over-year growth.
- FY2026Working capital and free cash flow — Whether intensity bends back below about 20% of sales toward the guide.
- MultiyearGrid services award shipping — Unnamed hyperscale customer; no value, term or shipment schedule disclosed.
- No date givenNext Investor Day — Fulsome update on the digital transformation program was promised there.
Financials
Annual Summary
| Metric | FY2024 | FY2025 | TTM | YoY |
|---|---|---|---|---|
| Revenue | $21.8B | $23.5B | $25.0B | +7.8% |
| Gross Margin | 21.6% | 21.2% | 21.4% | 45bps |
| EBITDA | $1.4B | $1.5B | $1.6B | +3.9% |
| EBITDA Margin | 6.4% | 6.2% | 6.3% | 23bps |
| Net Income | $718M | $640M | $710M | -10.8% |
| Free Cash Flow | $1.0B | $25M | $155M | — |
| Net Cash | — | — | — | — |
Key Ratios (Trailing)
- P/E TTM—
- EV/EBITDA TTM—
- EV/Revenue TTM—
- Price/FCF TTM—
- Gross Margin (TTM)21.4%
- EBITDA Margin (TTM)6.3%
- Net Margin (TTM)2.8%
- ROIC9.6%
- FCF Conversion9.8%
- SBC / Revenue0.2%
The Company
WESCO International is a business-to-business distributor of electrical, communications, utility and industrial products, plus logistics services and supply chain solutions. It does not manufacture most of what it sells; it sits in the distribution and services layer between manufacturers and the contractors, utilities and end users who build and operate physical infrastructure. The company reports relationships with more than 35,000 suppliers and serves nearly 130,000 customers worldwide. In the AI buildout that places it in the layer that moves cable, switchgear, transformers, racks, cooling equipment and the services that install and maintain them.
WESCO operates more than 700 sites in approximately 50 countries, the 10-K's filed figure; the CEO said '55 countries' on the Q2 FY2026 call and the two are not reconciled. It runs 63 facilities between 100,000 and 500,000 square feet as large distribution or fulfillment centers — 49 in the U.S., 8 in Canada, 3 in Europe, 2 in South America and 1 in Australia — plus a leased 118,000 square-foot headquarters in Pittsburgh. Those are distribution assets, not factories. The only fabrication capability in the source material is the in-house HVAC assembly and mission-critical cooling capability that came with Newark Engineering, acquired on July 1, 2026. Reporting runs through three segments: EES, CSS and UBS.
Business Segments
Competitive Landscape
The source material describes WESCO's competitive position in two registers. For grid services, management says 'there is no one we are competing with directly one-for-one' and that the companies doing parts of the work 'are not our traditional competitors.' For the rest of the portfolio, the source's relationship map lists traditional electrical, data center and MRO distributors. The 10-K risk factors flag a structural version of the threat: a supplier could change its sales strategy 'to reduce its reliance on distribution channels.' No market-share figures are disclosed anywhere in the source material.
- Graybar ElectricListed as an inferred competitor in the source's relationship map; not discussed in company material.
- SoneparListed as an inferred competitor in the source's relationship map; not discussed in company material.
- RexelListed as an inferred competitor in the source's relationship map; not discussed in company material.
- W.W. Grainger (GWW)Listed as an inferred competitor in the source's relationship map; not discussed in company material.
- Fastenal (FAST)Listed as an inferred competitor in the source's relationship map; not discussed in company material.
Supply Chain
WESCO sits between thousands of manufacturers and the contractors, utilities and data center operators who build with those products. The 10-K lists more than 35,000 supplier relationships and no sole-source designations. No supply-chain neighbor in the source material names WESCO.
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