FIX vs WCC: How Comfort Systems USA and WESCO International Compare (2026)

Same yardstick, side by side (as of August 2026). Valuation lined up like this is most meaningful for two names in the same corner of the market, which these are. Figures are approximate; verify before investing.

Reading it: WCC is the cheaper of the two on forward earnings, but cheaper is not the same as better. Pair the valuation with growth (how far the forward P/E sits below the trailing P/E) and risk (beta) before you decide.

The metrics above tell you which is the marginally better business. The bigger risk for most people is not picking the slightly worse stock, it is over-concentrating. FIX and WCC share themes, so owning both, or adding either to what you already hold, can quietly push a large share of your portfolio into one bet.

This is the part a generic comparison page cannot answer, because it depends on what you own. Connect your brokerage and Walnut shows your real, combined FIX and WCC exposure, flags overlap with your existing positions, and tells you if adding one would tip you past a concentration you are comfortable with, read-only by default, with your login staying at your broker. Walnut is not an investment adviser.

Comfort Systems USA is one of the largest mechanical, electrical, and plumbing (MEP) construction service providers in the United States. The company provides design, installation, and service of heating, ventilation, air conditioning (HVAC), plumbing, electrical, and piping systems for commercial, industrial, and institutional customers. End markets include data centers, semiconductor fabs, life sciences facilities, healthcare buildings, schools, and various other non-residential construction.

Full FIX guide

WESCO International is one of the largest electrical and industrial distributors in North America. The company distributes electrical products (wire and cable, lighting, electrical apparatus), industrial supplies (safety, fasteners, tools), and communications and security products (datacom cable, networking equipment, security cameras) to a diverse customer base including electrical contractors, utilities, manufacturers, data center operators, telecommunications providers, and various other commercial and industrial buyers.

Full WCC guide

Both fit overlapping themes, but they are not interchangeable. The useful comparison is which set of drivers and risks you want exposure to.

• FIX drivers: Data center construction; Semiconductor fab buildouts.
• WCC drivers: AI data center electrical products demand; Utility grid investment.

A faster-growing, richer-valued name usually swings harder, so it suits a longer horizon and a higher tolerance for volatility; a steadier, more cash-generative business suits a more conservative or income-minded investor. The honest test is which set of risks you could hold through a drawdown: Construction cyclicality. For WCC, construction cyclicality affects multiple end markets simultaneously.

Growth-minded investors who believe the theme has years to run tend to accept the richer multiple for more upside; value-minded investors lean toward the cheaper forward earnings and steadier profile. Pick FIX if you believe its drivers more; WCC if you believe its. Many investors hold both, but since they share themes, that is a concentrated bet, not diversification. Decide deliberately and check overlap. For the full detail, see the FIX and WCC guides.

FIX. Comfort Systems trades at a premium to traditional construction contractors, reflecting data center end-market exposure and backlog visibility. The multiple has expanded with the AI data center thesis.

WCC. WESCO trades at a modest P/E typical of distribution businesses. The premium versus pure commodity distribution comes from end-market diversification and the AI data center and utility grid investment tailwinds. The multiple has room to expand if these end markets remain strong.

Headline figures (approximate, early 2026): FIX shows revenue (ttm) ~$7 billion, operating margin ~11% (improving with mix), net income (ttm) ~$600 million, eps (ttm) ~$17.00; WCC shows revenue (ttm) ~$22 billion, operating margin ~7%, net income (ttm) ~$700 million, eps (ttm) ~$14.00.

FIX and WCC are related but distinct: same themes, different businesses and risks. Neither wins in the abstract; the right pick is whichever thesis you actually believe, sized so you are not over-concentrated in one theme. Walnut can show your combined FIX and WCC exposure against your real portfolio. It is not an investment adviser.