01 — At a Glance
The Bulb That Refuses to Dim
- 52-Week High / Low₹6,970 / ₹2,100
- Q3 Revenue (FY26)₹1,053 Cr
- Q3 PAT (FY26)₹47 Cr
- Quarterly EPS₹49.80
- Annualised EPS (Q3×4)₹199.20
- Book Value₹873
- Price to Book5.73x
- Dividend Yield0.70%
- Debt / Equity1.21x
- Order Book₹1,759 Cr
Auditor’s Opening Note: Lumax just delivered what they’re calling their “best quarterly performance in the history of our operations.” Revenue up 18.7% YoY to ₹1,053 crore, EBITDA margin expanded to 10.6% (from 8% last year), and PAT up 39% YoY to ₹47 crore. The stock? Down 11% in three months. Almost like the market is waiting for you to realize this is actually a good company before it agrees with itself.
02 — Introduction
You Can’t Avoid Paying for Good Lighting
Let’s talk about Lumax Industries. Since 1945. Lights for your car. Not the entertainment lights at Kamla Mills. The actual ones. The ones that prevent you from driving into a ditch at 2 AM on the Mumbai-Pune expressway while your Spotify playlist screams Raghav Sachar into the void.
They make headlamps (66% of revenue), tail lamps (23%), and all the other auxiliary nonsense that keeps your automobile highway-legal. Led by the DK Jain family (37.5% stake) and Stanley Electric Japan (also 37.5%), Lumax has become something approaching the monopoly of the automotive lighting business in India. They have relationships with 90% of OEMs. Yes, you read that right. Ninety. Percent.
The business model is beautifully simple: Maruti builds cars (42% of auto market). Tata builds cars. Mahindra builds cars. All of them need lights. Lumax makes lights. Lumax wins. End of story. And this quarter? The story got a lot brighter (sorry, we had to).
But here’s the thing — the stock rallied 127% in one year, then dropped 11% in the last three months. In Mumbai stock trading circles, this is what we call “the Sachin Tendulkar paradox” — everyone knows you’re good, but there’s always that moment where they wonder if you’re really that good. We’re about to find out.
Management Concall (Feb 2026): “We are safely secured in the double-digit EBITDA margins now.” — CFO, with the confidence of someone who just aced their semester exams. Translation: margins are sticking around, and the company knows it.
03 — Business Model: Lighting Up Everything You Forgot You Needed
They Make the Bulbs. Everyone Uses Them. Profit. Repeat.
Lumax has 29 manufacturing facilities across 7 states in India, positioned geographically closer to major OEM factories than a food delivery app is to your hunger at 11 PM. Their product portfolio has three key segments:
Front Lighting (69% of revenue): Headlamps, fog lamps, DRLs. The tech-heavy, complex, safety-critical stuff. If you mess this up, customers crash. They don’t come back. Front-end margins are appropriately premium.
Rear Lighting (22% of revenue): Tail lamps, signal lamps, everything that says “I’m stopping now” to the bike behind you on the Deccan Queen traffic. Lower complexity, lower margins, but essential.
Others (9% of revenue): Side indicators, auxiliary lamps, the unglamorous accessories that keep OEM compliance engineers awake at night.
The real magic? LED penetration. In Q3, 61% of their revenue is now LED-based (vs 52% last year). The order book? 81% LED. This is massive because LED modules carry 2x to 5x higher content per vehicle compared to conventional lamps, plus they command premium pricing in an industry that’s traditionally fought over rupees-per-bulb.
Passenger Vehicles66%Revenue Mix
Two-Wheelers28%Revenue Mix
Others (CV/3W)6%Revenue Mix
OEM Concentration Risk (Not Really?): Maruti Suzuki is almost 1/3 of the order book. That sounds dangerous until you realize (a) Maruti is 42% of the auto market, (b) Lumax is their only supplier for most models, and (c) 85% of their revenue comes from their top 8 customers — which includes Honda, Hero, Mahindra, Tata, and Toyota. Sounds like a moat. Smells like a moat. Probably is a moat.
💬 Quick thought: Your car has about 10 lamps on the outside. Lumax probably made 8 of them. How many stock pick ideas can you genuinely say that about?
04 — Financials Overview
Q3 FY26: The Numbers Keep Getting Better
Result type: Quarterly Results | Q3 FY26 EPS: ₹49.80 | Annualised EPS (Q3×4): ₹199.20 | P/E on annualised: 25.1x
| Metric (₹ Cr) |
Q3 FY26
Dec 2025 |
Q3 FY25
Dec 2024 |
Q2 FY26
Sep 2025 |
YoY % |
QoQ % |
| Revenue | 1,053 | 887 | 1,009 | +18.7% | +4.4% |
| EBITDA (ex-excep.) | 112 | 71.2 | 89 | +57.3% | +25.8% |
| EBITDA Margin % | 10.6% | 8.0% | 8.8% | +260 bps | +180 bps |
| PAT (incl. assoc.) | 47 | 33.8 | 36 | +39.1% | +30.6% |
| EPS (₹) | 49.80 | 36.34 | 38.72 | +37.0% | +28.6% |
Margin Expansion Alert: EBITDA margin jumped 260 basis points YoY to 10.6%. But here’s the asterisk management highlighted on the concall: Q3 had “unusually high” tooling profitability of ~₹10 crore (vs normal ~₹5 crore per quarter). They called tooling “very, very cyclical” tied to launch cadence. Translation: expect some quarter-to-quarter noise. But the structural margin expansion is real — operating leverage, improved plant performance, and higher content-per-vehicle from LED mix shift are all genuine. Strip out the tooling windfall? Still 9.5%+ margin. Not bad.
05 — Valuation Discussion: What’s This Bulb Factory Worth?
Three Ways to Think About Fair Value
