Cable · Founded 2000 · www.stl.tech · BSE 532374 · NSE STER TECH · ISIN INE089C01029
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Business
Sterlite Technologies Ltd. (STL) is a global data network solutions company. Its core business involves designing, manufacturing, and deploying advanced optical fibre and optical fibre cables (OFC), as well as providing end-to-end network integration services and digital network software solutions. The company makes money by selling its optical products to telecom operators, enterprises, and governments, and by executing large-scale network deployment projects globally, which include planning, designing, building, and managing digital infrastructure.
Revenue Mix
STL primarily operates through two major segments:
Optical Networking: This segment involves the manufacturing and sale of optical fibre preforms, optical fibre, and optical fibre cables (OFC). This is generally the larger revenue contributor, driven by global demand for network infrastructure.
Global Services: This segment provides end-to-end network solutions including design, build, and management of digital infrastructure for telecom service providers, governments, and large enterprises. This also includes software-defined network solutions and smart connectivity.
Note: Specific percentage contributions vary by fiscal year but Optical Networking typically accounts for a significant majority of revenue.
Industry
STL operates in the global digital infrastructure industry, specifically within the optical communication and network integration sectors. This industry is characterized by high capital expenditure, technological advancements, and a growing demand for data connectivity. Globally, key players include Corning, Prysmian, Furukawa Electric, and Sumitomo Electric. In India, competitors include HFCL and Finolex Cables. STL positions itself as one of the few fully integrated optical communication solution providers globally, from optical fibre manufacturing to network deployment services. It has a strong presence in India and is expanding its footprint in Europe, the Middle East, Africa, and North America.
MOAT
STL's competitive advantages include:
Vertical Integration: Integrated capabilities from preform manufacturing to optical fibre, cable, and network deployment services, allowing for cost efficiencies, quality control, and faster time-to-market.
Technology & Innovation: Focus on R&D leading to proprietary technologies like high-density cables and future-ready optical solutions, catering to evolving network demands.
Global Manufacturing & Delivery Footprint: Presence across multiple continents helps in serving a diverse client base and mitigating regional risks.
Long-term Relationships: Established relationships with major global telecom operators and governments.
Growth Drivers
Global 5G Rollout: Extensive fiberization is required to support 5G network densification and backhaul, driving demand for OFC and network services.
Fiber-to-the-X (FTTx) Expansion: Increasing demand for high-speed broadband connectivity to homes and businesses globally.
Data Centre Growth: Expansion of hyperscale and edge data centers necessitates robust optical connectivity.
Government Digitalization Initiatives: Programs like 'Digital India', 'BharatNet', and smart city projects drive infrastructure spending.
Industry 4.0 & IoT: Proliferation of connected devices and applications requires robust, low-latency networks.
Network Modernization: Existing legacy networks require upgrades to support higher bandwidth and new services.
Risks
Intense Competition & Pricing Pressure: The OFC market is competitive, potentially leading to margin erosion.
Raw Material Price Volatility: Fluctuations in prices of materials like silica, polymers, and other metals can impact profitability.
Technological Obsolescence: Rapid advancements in network technology require continuous R&D investment and adaptation.
Global Economic Slowdown: Reduced capital expenditure by telecom operators and enterprises during economic downturns.
Forex Fluctuations: Significant international business exposes the company to currency risks.
Project Execution Risks: Large-scale network deployment projects are subject to delays, cost overruns, and contractual disputes.
High Debt Levels: Capital-intensive nature of the business often requires significant borrowing, leading to interest cost exposure.
Management & Ownership
Sterlite Technologies Ltd. is part of the diversified Vedanta Group, with the promoter group (Agarwal family) holding a significant stake. The management team comprises seasoned professionals with experience in the telecom and technology sectors, focusing on global expansion, technological innovation, and operational excellence. The ownership structure includes promoter holdings, institutional investors (both domestic and foreign), and public shareholders.
Outlook
STL is well-positioned to capitalize on the secular tailwinds of digital transformation, driven by massive global investments in 5G, FTTx, and data center infrastructure. Its integrated capabilities and focus on technology offer a competitive edge in capturing market share in a growing industry. However, the company operates in a highly competitive and capital-intensive environment, facing potential risks from pricing pressures, commodity price volatility, and execution challenges in large-scale projects. Managing its debt levels and consistently innovating will be key to sustaining growth and profitability. The outlook is balanced, acknowledging both significant growth opportunities and inherent industry risks.
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| #(Fig in Cr.) | Dec 2023 | Mar 2024 | Jun 2024 | Sep 2024 | Dec 2024 | Mar 2025 | Jun 2025 | Sep 2025 | Dec 2025 | Mar 2026 |
|---|---|---|---|---|---|---|---|---|---|---|
| Net Sales | 1322 | 843 | 872 | 1074 | 998 | 1052 | 1019 | 1034 | 1257 | 1441 |
| Other Income | 19 | 13 | 8 | 2 | 5 | 21 | 8 | 12 | 9 | 23 |
| Total Income | 1341 | 856 | 880 | 1076 | 1003 | 1073 | 1027 | 1046 | 1266 | 1464 |
| Total Expenditure | 1232 | 812 | 808 | 957 | 892 | 927 | 887 | 905 | 1137 | 1246 |
| Operating Profit | 109 | 44 | 72 | 119 | 111 | 146 | 140 | 141 | 129 | 218 |
| Interest | 94 | 71 | 56 | 62 | 58 | 65 | 50 | 55 | 56 | 63 |
| Depreciation | 84 | 81 | 78 | 79 | 80 | 79 | 77 | 80 | 79 | 77 |
| Exceptional Income / Expenses | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | -15 | 31 |
| Profit Before Tax | -69 | -108 | -62 | -22 | -27 | 2 | 13 | 6 | -21 | 109 |
| Provision for Tax | -17 | -15 | -14 | -5 | -12 | -3 | 3 | 2 | -4 | 50 |
| Profit After Tax | -52 | -93 | -48 | -17 | -15 | 5 | 10 | 4 | -17 | 59 |
| Adjustments | -5 | 11 | 0 | 3 | -9 | -45 | 0 | 0 | 0 | 0 |
| Profit After Adjustments | -57 | -82 | -48 | -14 | -24 | -40 | 10 | 4 | -17 | 59 |
| Adjusted Earnings Per Share | -1.4 | -2.1 | -1 | -0.3 | -0.5 | -0.8 | 0.2 | 0.1 | -0.3 | 1.2 |
| #(Fig in Cr.) | Mar 2015 | Mar 2016 | Mar 2017 | Mar 2018 | Mar 2019 | Mar 2020 | Mar 2021 | Mar 2022 | Mar 2023 | Mar 2024 | Mar 2025 | TTM |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Net Sales | 3097 | 2144 | 2449 | 3177 | 5087 | 5154 | 4825 | 5437 | 6925 | 4083 | 3996 | 4751 |
| Other Income | 57 | 63 | 23 | 39 | 37 | 34 | 43 | 58 | 41 | 67 | 36 | 52 |
| Total Income | 3154 | 2207 | 2472 | 3216 | 5124 | 5189 | 4868 | 5495 | 6966 | 4150 | 4032 | 4803 |
| Total Expenditure | 2642 | 1732 | 1930 | 2428 | 3960 | 4085 | 4015 | 4772 | 6035 | 3622 | 3580 | 4175 |
| Operating Profit | 512 | 475 | 542 | 789 | 1164 | 1104 | 854 | 723 | 931 | 528 | 452 | 628 |
| Interest | 327 | 119 | 123 | 104 | 105 | 221 | 203 | 238 | 311 | 293 | 241 | 224 |
| Depreciation | 185 | 126 | 159 | 182 | 195 | 290 | 285 | 307 | 309 | 315 | 316 | 313 |
| Exceptional Income / Expenses | 0 | 0 | 0 | 0 | 0 | -51 | 0 | 16 | 0 | 0 | 0 | 16 |
| Profit Before Tax | 0 | 225 | 257 | 502 | 864 | 542 | 380 | 199 | 315 | -76 | -105 | 107 |
| Provision for Tax | 4 | 65 | 40 | 133 | 278 | 109 | 111 | 52 | 84 | -5 | -33 | 51 |
| Profit After Tax | -4 | 160 | 218 | 369 | 585 | 433 | 269 | 147 | 231 | -71 | -72 | 56 |
| Adjustments | 1 | -6 | -16 | -34 | -23 | 1 | 7 | -87 | -90 | 20 | -51 | 0 |
| Profit After Adjustments | -3 | 154 | 201 | 334 | 563 | 434 | 275 | 60 | 141 | -51 | -123 | 56 |
| Adjusted Earnings Per Share | -0.1 | 3.9 | 5.1 | 8.3 | 14 | 10.7 | 6.9 | 1.5 | 3.5 | -1.3 | -2.5 | 1.2 |
| # | 1 Year | 3 Year | 5 Year | 10 Year |
|---|---|---|---|---|
| Sales CAGR | -2% | -10% | -5% | 3% |
| Operating Profit CAGR | -14% | -14% | -16% | -1% |
| PAT CAGR | 0% | NAN% | NAN% | 0% |
| # | 1 Year | 3 Year | 5 Year | 10 Year |
|---|---|---|---|---|
| Share Price CAGR | 705% | 59% | 18% | 20% |
| ROE Average | -4% | 1% | 5% | 16% |
| ROCE Average | 3% | 6% | 8% | 14% |
| #(Fig in Cr.) | Mar 2015 | Mar 2016 | Mar 2017 | Mar 2018 | Mar 2019 | Mar 2020 | Mar 2021 | Mar 2022 | Mar 2023 | Mar 2024 | Mar 2025 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Shareholder's Funds | 1496 | 755 | 880 | 1175 | 1719 | 1920 | 1987 | 1955 | 2091 | 2023 | 1990 |
| Minority's Interest | 23 | 31 | 45 | 82 | 95 | 103 | 98 | 92 | 4 | 0 | 0 |
| Borrowings | 4436 | 468 | 427 | 631 | 935 | 970 | 1256 | 1536 | 1002 | 991 | 837 |
| Other Non-Current Liabilities | 168 | 158 | 146 | 120 | 123 | 396 | 244 | 238 | 162 | -9 | 47 |
| Total Current Liabilities | 2258 | 1203 | 1409 | 1607 | 4045 | 3882 | 4311 | 4891 | 5529 | 5180 | 2510 |
| Total Liabilities | 8380 | 2614 | 2908 | 3712 | 7012 | 7367 | 8055 | 8712 | 8788 | 8185 | 5384 |
| Fixed Assets | 4055 | 1137 | 1304 | 1225 | 2468 | 3060 | 3174 | 3351 | 3246 | 3209 | 2928 |
| Other Non-Current Assets | 2362 | 242 | 131 | 530 | 573 | 528 | 413 | 380 | 336 | 333 | 171 |
| Total Current Assets | 1963 | 1236 | 1473 | 1840 | 3857 | 3670 | 4296 | 4981 | 5196 | 4643 | 2285 |
| Total Assets | 8380 | 2614 | 2908 | 3712 | 7012 | 7367 | 8055 | 8712 | 8788 | 8185 | 5384 |
| #(Fig in Cr.) | Mar 2015 | Mar 2016 | Mar 2017 | Mar 2018 | Mar 2019 | Mar 2020 | Mar 2021 | Mar 2022 | Mar 2023 | Mar 2024 | Mar 2025 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Opening Cash & Cash Equivalents | 84 | 55 | 60 | 130 | 120 | 149 | 153 | 193 | 410 | 450 | 339 |
| Cash Flow from Operating Activities | 393 | 215 | 489 | 729 | 631 | 696 | 638 | 584 | 228 | 791 | 348 |
| Cash Flow from Investing Activities | -1172 | -156 | -232 | -582 | -1172 | -627 | -619 | -481 | -57 | -209 | -89 |
| Cash Flow from Financing Activities | 850 | -81 | -187 | -152 | 570 | -68 | 23 | 115 | -132 | -691 | 4 |
| Net Cash Inflow / Outflow | 71 | -22 | 69 | -5 | 29 | 2 | 43 | 218 | 39 | -109 | 263 |
| Closing Cash & Cash Equivalent | 155 | 60 | 130 | 121 | 149 | 153 | 200 | 411 | 450 | 339 | 396 |
| # | Mar 2015 | Mar 2016 | Mar 2017 | Mar 2018 | Mar 2019 | Mar 2020 | Mar 2021 | Mar 2022 | Mar 2023 | Mar 2024 | Mar 2025 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Earnings Per Share (Rs) | -0.07 | 3.89 | 5.06 | 8.34 | 13.98 | 10.74 | 6.94 | 1.5 | 3.53 | -1.28 | -2.51 |
| CEPS(Rs) | 4.6 | 7.22 | 9.46 | 13.73 | 19.39 | 17.9 | 13.97 | 11.35 | 13.5 | 6.1 | 4.98 |
| DPS(Rs) | 0.6 | 1 | 1.25 | 2 | 3.5 | 3.5 | 2 | 0.5 | 1 | 0 | 0 |
| Book NAV/Share(Rs) | 27.44 | 18.61 | 21.6 | 28.78 | 41.97 | 46.86 | 49.51 | 48.25 | 51.65 | 50.23 | 40.37 |
| Core EBITDA Margin(%) | 13.9 | 18.12 | 20.01 | 23.38 | 22.16 | 20.75 | 16.8 | 12.23 | 12.85 | 11.29 | 10.41 |
| EBIT Margin(%) | 10 | 15.13 | 14.66 | 18.89 | 19.05 | 14.8 | 12.09 | 8.04 | 9.04 | 5.31 | 3.4 |
| Pre Tax Margin(%) | 0 | 9.89 | 9.92 | 15.65 | 16.97 | 10.51 | 7.88 | 3.66 | 4.55 | -1.86 | -2.63 |
| PAT Margin (%) | -0.11 | 7.02 | 8.39 | 11.5 | 11.51 | 8.4 | 5.57 | 2.7 | 3.34 | -1.74 | -1.8 |
| Cash Profit Margin (%) | 5.55 | 12.55 | 14.53 | 17.18 | 15.34 | 14.03 | 11.49 | 8.35 | 7.8 | 5.98 | 6.11 |
| ROA(%) | -0.05 | 2.91 | 7.89 | 11.13 | 10.92 | 6.02 | 3.49 | 1.75 | 2.64 | -0.84 | -1.06 |
| ROE(%) | -0.33 | 17.59 | 27.28 | 36.59 | 41.17 | 24.16 | 13.95 | 7.55 | 11.56 | -3.48 | -3.61 |
| ROCE(%) | 5.33 | 7.96 | 19.95 | 28 | 31.57 | 18.71 | 12.69 | 8.66 | 11.36 | 3.94 | 3 |
| Receivable days | 78.51 | 123.77 | 98.17 | 88.47 | 79.71 | 103.32 | 114.02 | 105.98 | 92.98 | 152.87 | 110.71 |
| Inventory Days | 40.99 | 49.76 | 37.91 | 38.22 | 33.27 | 36.87 | 40.78 | 51.91 | 46.17 | 73.93 | 71.15 |
| Payable days | 149.79 | 241.38 | 150.01 | 158.86 | 188.49 | 247.26 | 245.38 | 257.22 | 222.61 | 417.75 | 261.85 |
| PER(x) | 0 | 23.29 | 24.89 | 37.45 | 15.64 | 5.94 | 27.95 | 149.73 | 41.74 | 0 | 0 |
| Price/Book(x) | 2 | 4.87 | 5.83 | 10.85 | 5.21 | 1.36 | 3.92 | 4.65 | 2.85 | 2.21 | 2.01 |
| Dividend Yield(%) | 1.09 | 1.1 | 0.99 | 0.64 | 1.6 | 5.49 | 1.03 | 0.22 | 0.68 | 0 | 0 |
| EV/Net Sales(x) | 2.42 | 2.14 | 2.44 | 4.27 | 2.09 | 0.93 | 2.13 | 2.16 | 1.31 | 1.78 | 1.33 |
| EV/Core EBITDA(x) | 14.67 | 9.65 | 11 | 17.2 | 9.14 | 4.33 | 12.05 | 16.27 | 9.72 | 13.74 | 11.76 |
| Net Sales Growth(%) | 20.8 | -30.77 | 14.22 | 29.74 | 60.12 | 1.32 | -6.39 | 12.68 | 27.37 | -41.04 | -2.13 |
| EBIT Growth(%) | 98.71 | 5.26 | 10.48 | 59.21 | 60.04 | -21.3 | -23.53 | -25.07 | 43.25 | -65.34 | -37.33 |
| PAT Growth(%) | 90.94 | 4563.41 | 36.25 | 69.27 | 58.85 | -26.08 | -37.85 | -45.34 | 57.14 | -130.74 | -1.41 |
| EPS Growth(%) | 92.57 | 5905.07 | 29.99 | 64.9 | 67.67 | -23.16 | -35.34 | -78.4 | 135 | -136.17 | -96.88 |
| Debt/Equity(x) | 3.57 | 1.48 | 1.27 | 1.02 | 1.22 | 1.29 | 1.45 | 1.72 | 1.77 | 1.61 | 0.92 |
| Current Ratio(x) | 0.87 | 1.03 | 1.05 | 1.14 | 0.95 | 0.95 | 1 | 1.02 | 0.94 | 0.9 | 0.91 |
| Quick Ratio(x) | 0.69 | 0.86 | 0.81 | 0.93 | 0.81 | 0.83 | 0.85 | 0.83 | 0.79 | 0.74 | 0.62 |
| Interest Cover(x) | 1 | 2.89 | 3.09 | 5.83 | 9.19 | 3.45 | 2.87 | 1.84 | 2.01 | 0.74 | 0.56 |
| Total Debt/Mcap(x) | 2.46 | 0.3 | 0.22 | 0.09 | 0.23 | 0.95 | 0.37 | 0.37 | 0.63 | 0.73 | 0.46 |
| # | Dec 2023 | Mar 2024 | Jun 2024 | Sep 2024 | Dec 2024 | Mar 2025 | Jun 2025 | Sep 2025 | Dec 2025 | Mar 2026 |
|---|---|---|---|---|---|---|---|---|---|---|
| Promoter | 53.99 | 53.98 | 44.18 | 44.17 | 44.17 | 44.16 | 44.4 | 44.45 | 44.44 | 44.44 |
| FII | 4.75 | 5.02 | 7.76 | 8.36 | 8.71 | 7.28 | 6.74 | 11.28 | 10.93 | 11.46 |
| DII | 1.95 | 1.99 | 11.73 | 10.69 | 9.42 | 11.6 | 11.35 | 10.79 | 11.05 | 10.83 |
| Public | 39.31 | 39.01 | 36.32 | 36.78 | 37.7 | 36.96 | 37.52 | 33.48 | 33.58 | 33.27 |
| Others | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Total | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 |
| # | Dec 2023 | Mar 2024 | Jun 2024 | Sep 2024 | Dec 2024 | Mar 2025 | Jun 2025 | Sep 2025 | Dec 2025 | Mar 2026 |
|---|---|---|---|---|---|---|---|---|---|---|
| Promoter | 21.54 | 21.54 | 21.54 | 21.54 | 21.54 | 21.54 | 21.66 | 21.69 | 21.69 | 21.69 |
| FII | 1.89 | 2 | 3.79 | 4.08 | 4.25 | 3.55 | 3.29 | 5.5 | 5.34 | 5.6 |
| DII | 0.78 | 0.8 | 5.72 | 5.21 | 4.6 | 5.66 | 5.54 | 5.27 | 5.39 | 5.29 |
| Public | 15.69 | 15.57 | 17.71 | 17.94 | 18.39 | 18.04 | 18.31 | 16.34 | 16.39 | 16.24 |
| Others | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Total | 39.91 | 39.91 | 48.76 | 48.77 | 48.78 | 48.79 | 48.79 | 48.8 | 48.81 | 48.81 |
| # | 1 Year | 3 Year | 5 Year | 10 Year |
|---|---|---|---|---|
| Sales CAGR | -2% | -10% | -5% | +3% |
| Operating Profit CAGR | -14% | -14% | -16% | -1% |
| PAT CAGR | — | 0% | 0% | — |
| Share Price CAGR | +705% | +59% | +18% | +20% |
| ROE Average | -4% | +1% | +5% | +16% |
| ROCE Average | +3% | +6% | +8% | +14% |
| # | Dec 2023 | Mar 2024 | Jun 2024 | Sep 2024 | Dec 2024 | Mar 2025 | Jun 2025 | Sep 2025 | Dec 2025 | Mar 2026 |
|---|---|---|---|---|---|---|---|---|---|---|
| Promoter | 53.99 | 53.98 | 44.18 | 44.17 | 44.17 | 44.16 | 44.4 | 44.45 | 44.44 | 44.44 |
| FII | 4.75 | 5.02 | 7.76 | 8.36 | 8.71 | 7.28 | 6.74 | 11.28 | 10.93 | 11.46 |
| DII | 1.95 | 1.99 | 11.73 | 10.69 | 9.42 | 11.6 | 11.35 | 10.79 | 11.05 | 10.83 |
| Public | 46.01 | 46.02 | 55.82 | 55.83 | 55.83 | 55.84 | 55.6 | 55.55 | 55.56 | 55.56 |
| Others | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Total | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 |
| # | Dec 2023 | Mar 2024 | Jun 2024 | Sep 2024 | Dec 2024 | Mar 2025 | Jun 2025 | Sep 2025 | Dec 2025 | Mar 2026 |
|---|---|---|---|---|---|---|---|---|---|---|
| Promoter | 21.54 | 21.54 | 21.54 | 21.54 | 21.54 | 21.54 | 21.66 | 21.69 | 21.69 | 21.69 |
| FII | 1.89 | 2 | 3.79 | 4.08 | 4.25 | 3.55 | 3.29 | 5.5 | 5.34 | 5.6 |
| DII | 0.78 | 0.8 | 5.72 | 5.21 | 4.6 | 5.66 | 5.54 | 5.27 | 5.39 | 5.29 |
| Public | 18.36 | 18.37 | 27.22 | 27.23 | 27.24 | 27.25 | 27.13 | 27.11 | 27.12 | 27.12 |
| Others | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Total | 39.91 | 39.91 | 48.76 | 48.77 | 48.78 | 48.79 | 48.79 | 48.8 | 48.81 | 48.81 |
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