Metrics raised 3
- FY27 EBITDA margin guidance raised to 23% (from 20%)
- FY27 data center + enterprise revenue share guidance raised to 50% (from 30%)
- Connectivity attach rate targeted at >20% from Q2 FY27 and 25% by Q4 FY27
Event Participants
Executives
3
Ajay Jhanjhari, Ankit Agarwal, Rahul Darak
Analysts
12
Achal, Akshat Mehta, Anshul Seghal, Balasubramanian, Devavrat, Krish Mehta, Naman Parmar, Nova, Pratiti Khara, Sunil Jain, Tej Patel, Tushar
Financials & KPIs
| Metric | Reported | Commentary |
|---|---|---|
| Revenue | ₹1,910 crores | Highest-ever quarterly revenue, up 87% YoY; driven by record order intake and data center ramp-up |
| Data Center revenue share | 21% | Up from 1% in FY26; anchored by $1.1B hyperscaler deal and multiple $100M IBR cable orders |
| North America revenue share | 54% | Up from 39% in FY26; Europe 25%, rest of world 22% |
| Order intake | ₹13,100 crores | 1.7x FY26 full-year order wins (₹7,687 crores); includes landmark $1.1B hyperscaler deal through FY29 |
| Open order book | ₹18,618 crores | Up 2.4x QoQ; ₹2,228 crores executable in Q2 FY27, ₹16,390 crores in Q3 FY27 and beyond |
| EBITDA | ₹397 crores | Up 184% YoY; delivered 20% margin in Q1, ahead of FY27 starget |
| EBITDA margin | 20% | FY27 target of 20% achieved a quarter early; guidance revised upward to 23% |
| PAT | ₹197 crores | Record PAT at 10% margin (highest ever); 3.5x full-year FY26 PAT |
| Connectivity attach rate | 16% | Up from 15% last year on a larger OFC revenue base; targeting >20% from Q2 and 25% by Q4 FY27 |
| Global OFC market share (ex-China) | 9% | India's #1 end-to-end optical manufacturer; share steady despite supply headwinds |
| Net cash | ₹483 crores | Company now net debt-free post-₹1,500 crore QIP; CRISIL outlook revised to stable, ICRA upgraded to AA Stable |
Geographic & Segment Commentary
Data Center: Q1 revenue contribution jumped to 21% from 1% in FY26, driven by the $1.1 billion multiyear hyperscaler deal and multiple $100 million high-fiber-count IBR cable orders. Neuralis portfolio achieved US Conec certification for MMC pre-terminated solutions (3x cable density), positioning STL for hyperscalers scaling to 800G+. Data center + enterprise is expected to scale to 50% of FY27 revenue, well above the 30% prior guidance.
Telecom & Citizen Networks: Remains the core pillar, with demand from FTTx, 5G/6G and rural connectivity programs (BharatNet in India, BEAD in the U.S.). The CONCAT spliceless FTTH solution, which cuts labor costs by up to 71%, was launched to drive connectivity attach rates with key U.S. telecom operators.
North America: Revenue share expanded to 54% from 39% in FY26, powered by AI-led data center build-out, DCI and FTTH expansion, supported by the South Carolina manufacturing facility. CRU projects North America as the strongest growth region at 18.6% CAGR through 2030 (upgraded from 15%).
Europe: Contributed 25% of revenue in Q1. The definitive victory in the Fujikura patent dispute resolved all legal uncertainty around the Celesta cable family, clearing the path for data center and telecom business growth in the region.
India / Rest of World: Rest of world held steady at 22%. India's data center capacity is projected to grow nearly 7x from 1.6 GW to 10 GW by 2031, with commitments from hyperscalers (Meta, Reliance 3 GW plans) and AirTrunk (~5 GW in Maharashtra/Andhra Pradesh) creating a strong domestic fiber tailwind.
Company-Specific & Strategic Commentary
Neuralis AI Data Center Portfolio: Achieved elite US Conec certification for MMC pre-terminated solutions delivering 3x cable density; STL is among few global players offering certified MMC pre-terminated fiber trunks, array cords and assemblies for 800G+ hyperscale workloads.
Next-Gen Fiber Leadership: G.654.E fiber fully commercialized (30% lower signal loss); Hollow-Core fiber cuts latency by up to 47%; multi-core fiber expands capacity 4-7x, with real-world deployments in India (C-DOT, IIT Madras) and U.K. (Colt); 785+ patents with 9 new filings in Q1.
CONCAT Market-Led Innovation: Spliceless plug-and-play FTTH solution reduces labor cost by up to 71% by shifting fiber preparation to factory environments; field-validated with a top-tier U.S. telecom operator and recognized by Lightwave Innovation Awards; strategic lever for attach rate expansion.
Capital Raise & Balance Sheet Strengthening: Completed ₹1,500 crore QIP (2.5x subscribed; institutional holdings at a historic high of 33%, including Nomura, HSBC, Motilal Oswal and Bank of India); 75% of proceeds toward debt reduction; CRISIL revised outlook to stable and ICRA upgraded rating to AA Stable.
Capacity Expansion Roadmap: ~₹500 crores capex per year for the next 3 years (cumulative ~₹1,500 crores) for equipment upgrades and debottlenecking across glass, fiber, cable and connectivity; separate $100 million U.S. connectivity facility investment over 5 years.
Guidance & Outlook
| Metric | Guidance / Outlook | Commentary |
|---|---|---|
| EBITDA margin | 23% for FY27 (revised up from 20%) | 20% delivered in Q1; upside from utilization gains, product/customer mix, and connectivity attach rate expansion to 25% by Q4 |
| Data Center + Enterprise revenue share | 50% of FY27 revenue (raised from 30%) | Data center alone reached 21% in Q1 vs 1% in FY26; to be balanced with telecom and rural connectivity projects |
| Connectivity attach rate | >20% from Q2 FY27; 25% by Q4 FY27 | Driven by CONCAT, MMC certified solutions and integrated solution sales with key U.S. customers |
| Capex | ~₹500 crores per year for FY27-FY29; $100M U.S. connectivity facility over 5 years | For debottlenecking and equipment upgrades across all product lines; U.S. spend for onshore connectivity capacity |
| Revenue | No explicit guidance | Management declined to provide revenue guidance; Q2 executable order book stands at ₹2,228 crores |
Risks & Constraints
| Risk | Context |
|---|---|
| Raw material supply & cost inflation | Germanium, helium and polyethylene costs have risen to "significant multiples" due to the war/geopolitical situation. Management is diversifying germanium suppliers, developing technologies to reduce germanium consumption, recycling helium, and passing through polyethylene costs; orders are being accepted keeping raw material availability in mind. |
| Capacity constraints limiting order intake | With record order inflow, STL is now "picking and choosing" orders based on capacity availability and execution capability. Debottlenecking and ~₹500 crore/year capex over 3 years are intended to relieve constraints, but near-term revenue could be limited by execution capacity. |
| AI capex deflation from China | Lower token costs from Chinese players create a large cost delta with U.S. cloud providers; management acknowledges "something has to give at some level" but sees demand currently outstripping supply, with hyperscaler capex upgraded to $805 billion. |
| Europe growth slower than expected | European data center investments are starting but on-ground progress remains slow; management expects Europe to scale only in 1-2 years, making near-term growth reliant on North America and India. |
Q&A Highlights
Order Intake, Capacity Utilization & Large Order Potential
- Question: What was Q1 capacity utilization, and is the data center ordering cycle behind us or still in progress? Can STL absorb more large orders? (Achal – Nuvama; Devavrat – Seven Rivers Holding)
- Answer: Utilization is improving quarter-on-quarter (not disclosed). U.S. data center capex is multiyear — 8-10 GW will be added this year with a backlog of capacity still to be built. Multiple conversations are ongoing with telecom operators in India, Europe and globally; equipment upgrades and debottlenecking are progressing in parallel, giving confidence to take on further orders. (Ankit Agarwal)
Raw Material Sourcing
- Question: Where does germanium/helium sourcing stand, and will supply issues persist through FY27? (Achal – Nuvama; Nova – Nova Financial)
- Answer: Germanium sourcing is being diversified with new technologies expected to reduce consumption over coming quarters; helium recycling has been implemented with Middle East developments watched closely; polyethylene costs are being passed through to customers. Orders are taken with raw material availability in mind; management is confident of improving supply quarter-on-quarter. (Ankit Agarwal)
Revenue Guidance & Order Book Execution
- Question: The ₹2,228 crore Q2 executable order book — will execution overshoot like Q1? Any revenue guidance? (Sunil Jain – Nirmal Bang Securities)
- Answer: No revenue guidance is provided; the executable order book does not translate into a revenue forecast. Q1 revenue growth reflected the drastic improvement in order intake. (Ankit Agarwal)
Gross Margin Pressure & Order Selection
- Question: Gross margins were flat despite an improving data center mix — is it raw material cost pressure? Excluding the $1.1B deal, regular order intake looked lower QoQ — was capacity a constraint? (Tej Patel – Niveshaay)
- Answer: Yes, prices of key raw materials have increased to "significant multiples" due to the war situation; improvement is expected and will flow into EBITDA margins. Even excluding the large order, inflow was sufficient; the company now has to pick and choose orders based on capacity and execution capability. (Ajay Jhanjhari)
AI vs Telecom Mix Strategy
- Question: How do you balance AI data center orders against traditional telecom for long-term stability? (Krish Mehta – Enam Holdings)
- Answer: There are three parallel demand centers: telecom, data centers (including neutral long-haul fiber builders), and rural projects (BEAD, BharatNet). The intent is a balanced customer and portfolio base while targeting top-3 global status; data center + enterprise will trend to 50%, with telecom and rural connectivity projects balancing it. (Ankit Agarwal)
Data Center Fiber Density Economics
- Question: What is driving fiber per switch to 12,000-16,000 fibers, and how have industry realizations moved? (Balasubramanian – Arihant Capital)
- Answer: Realizations are not disclosed. The fiber-per-switch figures reflect GPU architecture evolution (e.g., NVIDIA) driving fiber density per switch and per campus, particularly for data center interconnect; this is the core of STL's data center growth message. (Ankit Agarwal)
Capex Plans & U.S. Connectivity Investment
- Question: What is the capex plan for this year and next, and what is the phasing of the $100 million U.S. plant? (Akshat Mehta – Seven Rivers Holding; Pratiti Khara – Param Capital)
- Answer: ~₹500 crores per year for the next 3 years (cumulative ~₹1,500 crores) for upgrades and debottlenecking across glass, fiber, cable and connectivity. The $100 million U.S. investment is a 5-year connectivity facility serving telecom and data center customers; progress updates to be shared next quarter as customer requirements crystallize. (Ankit Agarwal)
Product Strategy & Margin Upgrade Drivers
- Question: Are you entering optical transceivers? What drove the margin upgrade? (Tushar – Sanghvi Family Office)
- Answer: No — STL consciously exited active components; focus remains fiber, cable and connectivity (hollow-core, multi-core, etc.). The margin upgrade reflects capacity utilization improvement, product/customer mix, and a healthy cable + connectivity ratio. (Ankit Agarwal)
Semiconductor & China AI Cost Deflation
- Question: Is there any semiconductor value chain play, and does cheaper Chinese token pricing deflate the AI capex environment? (Anshul Seghal – Seghal Capital Advisors)
- Answer: Semiconductor is not a near-term priority, though glass capability could be evaluated later. U.S. remains the strongest data center market; India is starting to scale; Europe is a "dark horse" in 1-2 years. Demand currently outstrips supply, but the U.S.-China token cost delta is a watch point — "something has to give at some level." (Ankit Agarwal)
Balance Sheet, Working Capital & Margin Trajectory
- Question: What will debt/working capital look like at FY27 year-end, and what is the margin difference between telecom and data center? (Naman Parmar – Niveshaay Investments)
- Answer: Management expects to remain net debt-free through the year, aided by QIP proceeds, internal accruals and customer payment-term negotiations. Data center solution margins are higher than telecom; utilization gains plus a 25% connectivity attach rate by Q4 will drive EBITDA margin toward 23%. (Ajay Jhanjhari; Ankit Agarwal)
Key Takeaway
STL reported a record Q1 FY27, with revenue of ₹1,910 crores (up 87% YoY), EBITDA of ₹397 crores (up 184% YoY) at a 20% margin — hitting its FY27 margin target a quarter early — and record PAT of ₹197 crores, 3.5x FY26 full-year PAT at a 10% margin. Record order intake of ₹13,100 crores (1.7x FY26 total order wins), anchored by a landmark $1.1 billion hyperscaler deal, lifted the order book to ₹18,618 crores (2.4x QoQ). Data center revenue share jumped to 21% from 1% in FY26, and North America reached 54% of revenue. Management raised FY27 EBITDA margin guidance to 23%, raised data center + enterprise revenue share guidance to 50%, and targets a 25% connectivity attach rate by Q4. The ₹1,500 crore QIP left the company net debt-free at ₹483 crores. Key watch points are germanium/helium cost inflation, capacity-driven order selectivity, and potential AI capex deflation from cheaper Chinese tokens.