How to Analyse a Cables and Wires Stock

In FY26, KEI Industries grew its revenue handsomely — and its actual volume grew 6.21% (KEI Q4 FY26 concall). Read those two facts together and you have already learned the single most important thing about this sector: most of the "growth" you see in a cables and wires company's top line in any given year is not more copper going out of the gate — it is the price of that copper passing through to the customer. A cable is roughly two-thirds raw material, and copper and aluminium prices move with global commodity cycles that have nothing to do with how good the management is. (Illustration of how to read the numbers, not a view on the stock.)

So the first discipline is to stop being impressed by revenue. A company can post 25% revenue growth in a year copper rallied and call it a triumph, while the actual tonnage it shifted barely moved. Another can grow revenue 10% in a year copper fell, having sold far more product. The headline lies in both directions. The questions that decide the outcome live underneath it: how much real volume, sold into which channel, at what utilisation, and whether the company can pass the metal price on without losing the customer.

This is how to read a cables and wires company the way an analyst who has been through a copper cycle reads it — the handful of numbers that matter, where they hide (several are not in the income statement at all — you dig them out of the concall and the investor deck), what "good" looks like, and the red flag that has caught more retail investors than any other.

A note on the boundary first: from the outside you will not perfectly separate volume from price in every line. What you can do is read the direction of the operating metrics and check whether management's account of them survives the Q&A.

What actually drives the economics here?

A cables and wires business is a converter. It buys copper and aluminium rod, draws it, insulates it, and sells the finished cable for a margin over the metal — and that conversion margin, not the metal, is the whole economic engine. Picture a baker who buys flour at the day's market price and sells bread: when flour doubles, his sales figure doubles too, but he is no richer — what he actually earns is the spread between the loaf and the flour in it. The metal in a cable is the flour. The conversion margin is the spread.

Two things follow, and they fix the two beginner errors.

First, operating margins look deceptively thin and stable — typically high single digits to low teens. Polycab ran a 13% operating margin in Q4 FY26; KEI ran 11%; RR Kabel ran 9% (Inve data, Q4 FY26). That is not a weak business — it is a pass-through business, where the metal inflates the denominator. The right way to judge profitability here is not the headline margin but the conversion margin (often reported as contribution margin) and EBITDA per tonne, which strip the metal out.

Second, scale and channel are the moat, not the product. A cable is close to a commodity; what separates a 13% operating margin from a 9% one is utilisation, a wide dealer network that lets a company sell branded wire to a builder at a premium, and a richer mix. Which is exactly why the metrics below are the spine of the analysis.

The metrics that matter

Volume vs value growth — the number that unmasks the rest

What it is: value growth is the reported revenue change; volume growth is the change in actual quantity (tonnes, or km of cable) shipped. Why it matters here: because copper and aluminium are roughly two-thirds of the cost, a revenue figure blends real demand with metal-price inflation, and the two can point in opposite directions. Where to find it: almost never in the financials — managements disclose volume growth verbally on the concall or in the investor deck, and you have to go get it. What "good" looks like: real, sustained double-digit volume growth that exceeds the company's revenue growth in a falling-metal year, or comfortably tracks it through the cycle.

The contrast inside one company is the lesson. KEI's net volume grew 6.21% across FY26 (KEI Q4 FY26 concall) even as it guided to and delivered far higher revenue growth — but its copper cables volume grew 15% in the same year (Inve data, Q4 FY26), and management guided single-quarter volume growth toward 16–20% (Inve data, Q3–Q4 FY26). RR Kabel, meanwhile, grew company-wide volume 16% in FY26 (Inve data, Q4 FY26), with management guiding cable volume to ~25% off a small base (RR Kabel Q4 FY26 concall). Same sector, same metal, very different real demand — and you would never have seen it from revenue alone.

B2B cables vs B2C wires and FMEG — where the margin and the multiple come from

What it is: the split between institutional/B2B cables (sold to EPC contractors, utilities, industry — large, lumpy, lower-margin) and the B2C side: branded house wires sold through dealers, and FMEG (fast-moving electrical goods — fans, switches, lighting, appliances). Why it matters here: the B2C and FMEG mix carries higher, stickier margins and earns a consumer-style valuation multiple; a pure B2B cable maker is a cyclical converter and is priced like one. Where to find it: the segment disclosure plus the concall — managements give you the mix percentages. What "good" looks like: a rising, profitable B2C/FMEG share — emphasis on profitable, because FMEG has been a graveyard of loss-making "growth."

Read it across the three and the strategic picture appears. KEI runs a roughly 50/50 B2C-to-institutional split, with dealer sales at 54% of FY26 revenue from about 2,125 active dealers (KEI Q4 FY26 concall). Polycab's FMEG premium portfolio reached 35% of segment revenue in FY26, with FMEG EBIT margin at 4.1% in Q4 FY26 (Inve data, Q4 FY26). RR Kabel's FMEG was still only ~10% of revenue and still loss-making — a ₹5 crore segment loss in Q3 FY26 (Inve data, Q3 FY26), even as it guided FMEG toward a 5.5% EBIT margin by FY28 (RR Kabel Q3 FY26 concall). The mix is the strategy; whether the mix makes money is the verdict.

Raw-material (copper/aluminium) pass-through — the discipline test

What it is: the speed and completeness with which a company passes a rise in copper/aluminium prices through to selling prices. Why it matters here: this is the difference between a converter that protects its spread and one that eats the metal to hold volume. A lag of a quarter can dent margins even in a fundamentally fine business. Where to find it: purely in the concall — managements describe how much of a price hike they have "taken" and how much remains. What "good" looks like: prompt, near-full pass-through with the conversion margin held steady through the move.

You watch this through what it does to the contribution margin. Havells took a blended price hike of 8% in its cables and wires business in Q4 FY26 (Havells Q4 FY26 concall), and management's stated anchor is a 15–16% contribution margin for the blended cables-and-wires book: "with our blend of cables and wires, 15% to 16% is the right contribution margin to assume" (Havells Q1 FY26 concall). When that margin slips — Havells flagged a ~200 bps contribution-margin decline in its C&W business in one quarter (Inve data, Q2 FY26) — the question to ask is whether it was metal-price lag (temporary) or competitive price-cutting (structural). Polycab, on its side, described taking a commodity price hike with "the remaining will happen during this quarter" (Polycab Q2 FY26 concall) — the candid language of a company managing the lag in real time.

Capacity and utilisation — the source of operating leverage

What it is: installed capacity (often given as revenue potential at a base metal price) and the share of it actually used. Why it matters here: a converter's incremental margin is high once the plant is paid for, so rising utilisation is where operating leverage and ROCE come from — and a big capex announced into low utilisation is where they go to die. Where to find it: investor presentations and the concall; segment-level utilisation is rarely in the financials. What "good" looks like: utilisation in the high 70s to 90s with a credible plan to fill new lines.

The spread across the sector is wide and revealing. KEI's cable division ran at 78% utilisation while its house-wire line ran at just 65% (KEI Q2 FY26 concall), and its new Sanand plant was at only 50% (KEI Q1 FY26 concall) — a plant whose ₹6,000 crore revenue potential will take years to fill (KEI Q2 FY26 concall). Havells ran cables at 90% but wires at 65% (Havells Q2 FY26 concall). RR Kabel ran cables at 90% but wires at 70% (Inve data, Q3 FY26). Finolex Cables ran electrical cables just under 70% (Finolex Q2 FY26 concall), rising to ~80% (Inve data, Q3 FY26). The pattern: cable lines are tight, wire and new lines have headroom — which is exactly where the next leg of margin either comes from or doesn't.

Exports — the optionality, and the lower-margin reality

What it is: the share of revenue from overseas, usually the US and Middle East. Why it matters here: it widens the addressable market and diversifies away from the Indian capex cycle, but export margins are often lower than premium domestic B2C, so growth in the mix is not automatically margin-accretive — and it carries currency and tariff risk. Where to find it: concall and deck. What "good" looks like: a rising contribution with the margin disclosed, not just the revenue.

KEI lifted exports to ~20% of sales in FY26 — "taking our export to around approximately 20% of our total sales" (KEI Q4 FY26 concall) — with export sales of ₹1,833 crore, up 45% (Inve data, Q4 FY26). Polycab, by contrast, was targeting over 10% export contribution by FY2030: "the company aims for exports to contribute over 10% of total revenue by FY2030" (Polycab Q4 FY26 concall), and pointed to a ~15% EBITDA margin on exports (Inve data, Q2 FY26). The gap between KEI's "20% now" and Polycab's "10% by 2030" tells you how differently the two have leaned into the same opportunity.

Distribution — the quiet compounding asset

What it is: the dealer/distributor and retail-touchpoint network. Why it matters here: in branded wires and FMEG, shelf presence is the moat — a builder buys the wire his electrician trusts and his dealer stocks. Network width converts a commodity into a brand. Where to find it: investor decks and concall; dealer counts and B2C contribution are disclosed, not in the financials. What "good" looks like: a steadily widening active-dealer base feeding rising B2C contribution.

KEI's B2C dealer-network sales reached ₹1,936 crore in Q4 FY26 from ~2,125 active dealers (KEI Q4 FY26 concall), with its B2C distribution network growing ~22–29% year on year through FY26 (Inve data, Q1–Q3 FY26). A related tell sits next to it: KEI cut receivable days from 2.2 months to 1.88 months over FY26 — "reducing receivable days from 2.2 months to 1.88 months" (KEI Q4 FY26 concall) — because a stronger B2C mix collects cash faster than lumpy institutional B2B. The distribution metric and the working-capital metric move together, and both reward patient owners.

How do you read valuation for this subsector?

The right multiples are P/E and EV/EBITDA — these are equity businesses with modest leverage, not spread businesses, so the bank-style P/B-ROE lens does not apply. But two adjustments separate a careful read from a careless one.

First, normalise for the metal cycle. Because revenue and even absolute EBITDA inflate when copper rallies, a trailing EV/EBITDA can look cheap at the top of a metal cycle and dear at the bottom. Anchor on EBITDA per tonne and the conversion margin through a full cycle rather than a single buoyant year.

Second — and this is the one the market actually pays for — the multiple is a weighted average of a B2B converter and a B2C consumer business. A higher, profitable FMEG and branded-B2C mix earns a premiumised multiple, because the market capitalises a fan brand differently from a coil of industrial cable. This is the single biggest swing factor in how two otherwise similar cable makers are priced. The honest test: is the premium being paid for FMEG that makes money (Polycab's 35% premium portfolio at a positive, rising FMEG EBIT) or for FMEG that is still promising to make money (RR Kabel's still-loss-making segment guided to a 5.5% margin by FY28)? Pay a consumer multiple only for the former.

A worked case: KEI's Sanand plant — said vs did

Here is one company through real numbers and its own words, to show how the operating metrics and the guidance fit together (illustration, not a view on the stock; figures from Inve data and KEI concalls).

At its Q4 FY25 call, KEI guided that its big new Sanand cable plant — a project with ₹6,000 crore of eventual revenue potential (KEI Q2 FY26 concall) — would commence commercial production by the end of Q1 FY26 and that the total project would be completed by the end of FY26. In Inve's Promise Tracker, both of those commitments are now marked delayed (Inve data) — the plant existed and ramped, but the original timeline slipped. By Q1 FY26 the plant was running at only 50% utilisation (KEI Q1 FY26 concall), with management candidly framing the margin benefit as a FY28 event: "by '27-'28 financial year when we will be utilizing almost 50%, 60% capacity… then a little bit EBITDA margin will get improved" (KEI Q1 FY26 concall).

Now read that against what did land. KEI's FY26 revenue-growth guidance of 17–18%, set at Q4 FY25, is marked achieved (Inve data); its FY26 volume came in at 6.21% net / 15% on copper cables (KEI Q4 FY26 concall); receivable days fell to 1.88 months as guided. So the picture is not "management overpromised" — it is the ordinary texture of a capex-heavy converter: the demand and execution guidance held, while the project-timeline guidance slipped a few quarters. The distinction matters. A slipped plant commissioning is a timing question that fills in; a missed volume-and-margin guidance, quarter after quarter, is a demand or competitiveness question that may not. Knowing which kind of miss you are looking at is the whole game — and it is exactly the kind of forward commitment Inve's Promise Tracker pins to the quarter it was made in, with a verdict as later calls come in. (A read on how management communicated through one cycle, not a lifetime verdict.)

Red flags specific to cables and wires

• Revenue growth with flat or falling volume. The classic mirage: a top line riding the copper price while real tonnage stalls. Always pull volume growth from the concall and set it against revenue. If management talks only about revenue and goes quiet on volume, that silence is the answer.
• Margin "expansion" in a rising-metal quarter. A pass-through business should see absolute EBITDA rise with metal prices, but the percentage margin compress slightly (bigger denominator). A rising percentage margin in a sharp copper rally can flatter — check whether it's real mix improvement or inventory gains that won't repeat.
• A big capex into low utilisation, with the payoff always one more year out. New capacity is healthy only if there is a credible path to fill it. A plant stuck at 50% while the EBITDA benefit is perennially pushed to "next year plus one" is a value trap dressed as a growth story.
• FMEG that grows revenue but never profit. The FMEG dream sells the consumer multiple; the FMEG reality is years of segment losses for many entrants. A segment guided to profitability "by FY28" for several years running is the tell.
• Stretching receivables to chase B2B growth. Institutional cable orders are lumpy and collect slowly; a sudden jump in receivable days alongside a B2B revenue spurt is growth bought with the balance sheet.

Frequently asked questions

Where this read can be wrong

The strongest case against everything above is that the metal cycle giveth as well as taketh away — and an analyst who relentlessly normalises it can miss a genuine re-rating. A cables and wires company in the middle of an Indian power-and-housing capex super-cycle can compound volume in the high teens for years while the metal also trends up, and the converter who "ate" a price hike for two quarters to grab a builder's loyalty may be buying a decade of distribution. Treating every revenue surge as a copper mirage would have kept you out of the best names in the sector during exactly the years they ran. The honest claim is narrower: separating volume from value, and profitable mix from promised mix, tells you what kind of growth you are paying for — it does not, by itself, tell you whether this is the right point in the cycle to pay for it.

And invert the question you bring to the next set of results. Don't ask "is revenue growing?" Ask: if this management were quietly riding the copper price and stalling on real volume, mix, and utilisation, what would the numbers look like — and does this disclosure rule that out? A company that volunteers its volume, its segment utilisation, and its conversion margin is letting you check. One that gives you only revenue and a smile is telling you where it would rather you not look.

The owner's question to sit with before buying any cables and wires company: through one full copper cycle — not this buoyant quarter — what must I believe about this company's real volume, its profitable mix, and its ability to fill the plants it is building, for the conversion engine to still be widening its spread five years from now? If the answer leans on the metal price rather than the moat, you have read the headline, not the business.

For the same volume-vs-value discipline applied to a very different balance sheet, see how to analyse an NBFC — where the trap is a cosmetic clean loan book rather than a copper mirage.

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