# Auto Ancillaries - AC — company-by-company sector analysis > Auto Ancillaries - AC: Subros Ltd owns the largest revenue base AND the fastest current growth. Sector Alpha — machine-written from the numbers. Data as of 2026-08-20. Not investment advice. ## Bottom line Auto Ancillaries - AC has underperformed NIFTY 500 by 22.9% over 52 weeks and 2.7% over 13 weeks. 0 of 1 covered companies beat NIFTY on Mansfield relative strength, while 0 of 1 beat the sector itself. Subros Ltd leads with revenue of ₹3,910 crore, based on 1 of 1 comparable companies through Jun 2026. ## Sector relative strength Auto Ancillaries - AC has underperformed NIFTY 500 by 22.9% over the last 52 weeks. Over 13 weeks the gap is a shortfall of 2.7%. 0 of 1 covered company currently beat NIFTY on Mansfield relative strength, so leadership inside the sector is selective. Subros Ltd is the strongest against the sector itself at 0%. 13-week sector return versus NIFTY 500: -2.7% 52-week sector return versus NIFTY 500: -23% Stocks leading NIFTY: 0/1 Stocks leading sector: 0/1 Central tension: The central tension: current leadership is concentrated, so durability matters more than rank. Companies: 1 Combined market value: ₹4.9K Cr ## 4-Factor Sector Score An additive sector-relative research score. The four displayed point contributions always equal the total: Growth & earnings (35), Capital efficiency (25), Valuation (20), and Relative strength (20). Missing or stale evidence is absorbed inside the affected factor, never applied as a hidden adjustment. 1. Subros Ltd (SUBROS): 43/100 — Mixed-negative evidence; evidence 91% - Growth & earnings 12.3/35 | Capital efficiency 14.9/25 | Valuation 8.5/20 | Relative strength 7.5/20 - Price stage: ASLEEP — Neither ahead of the benchmark nor yet turning up against it. - Led NIFTY 500 by 5%+ over the prior 13 weeks in 1 of 10 weeks with a reading, within the last 12 - Exact sum: 12.3 + 14.9 + 8.5 + 7.5 = 43.2 - Decision use: Balanced evidence: keep at normal research priority and require another comparable period before raising conviction. ## Market action Subros Ltd has the strongest one-year price move in Auto Ancillaries - AC at -6%. It also leads on Mansfield relative strength against NIFTY at -11.3%. 0 of 1 covered company are above zero on that measure. Every line covers 313 weekly closes through 2026-08-14. ### Strongest one-year price performers 1. Subros Ltd (SUBROS): -6.0% ### Strongest relative strength versus NIFTY 500 1. Subros Ltd (SUBROS): -11% ## Revenue Scale & Growth Durability What the numbers say: Subros Ltd is the scale leader at ₹3,910 crore, Subros Ltd's growth is 13.8% from a ₹3,910 crore base, with 20 reported observations in the 20-quarter window. Treat the growth leader as an acceleration candidate, not as equally proven scale. Investor read: Subros Ltd is the scale benchmark; Subros Ltd is the acceleration watch. Promote the challenger only if growth persists and converts into margin and returns. This conclusion weakens if: Subros Ltd's growth falls below Subros Ltd's for two consecutive comparable reports while operating margin also compresses. Evidence: Subros Ltd · ₹3,910 crore | Not enough peers | 8/8 recent comparable periods | 1/1 companies · 20 observations Definition: Revenue is compared on a common reported-currency basis. Growth is year-on-year, so seasonality does not masquerade as progress. ### Revenue — largest 1. Subros Ltd (SUBROS): ₹3.9K Cr ### Revenue growth — fastest growers 1. Subros Ltd (SUBROS): 14% ### 20-quarter Revenue history - SUBROS: Sep 2021 ₹529 Cr | Dec 2021 ₹548 Cr | Mar 2022 ₹681 Cr | Jun 2022 ₹709 Cr | Sep 2022 ₹695 Cr | Dec 2022 ₹655 Cr | Mar 2023 ₹748 Cr | Jun 2023 ₹693 Cr | Sep 2023 ₹813 Cr | Dec 2023 ₹732 Cr | Mar 2024 ₹832 Cr | Jun 2024 ₹810 Cr | Sep 2024 ₹828 Cr | Dec 2024 ₹821 Cr | Mar 2025 ₹908 Cr | Jun 2025 ₹878 Cr | Sep 2025 ₹880 Cr | Dec 2025 ₹948 Cr | Mar 2026 ₹1.1K Cr | Jun 2026 ₹1.0K Cr ### 20-quarter Revenue growth history - SUBROS: Sep 2021 — | Dec 2021 — | Mar 2022 — | Jun 2022 48% | Sep 2022 31% | Dec 2022 20% | Mar 2023 9.8% | Jun 2023 -2.3% | Sep 2023 17% | Dec 2023 12% | Mar 2024 11% | Jun 2024 17% | Sep 2024 1.9% | Dec 2024 12% | Mar 2025 9.1% | Jun 2025 8.4% | Sep 2025 6.3% | Dec 2025 15% | Mar 2026 16% | Jun 2026 18% ## Operating Economics & Margin Trend What the numbers say: Subros Ltd leads both opm at 8% and margin change at -1 percentage points. Investor read: Subros Ltd sets the level benchmark; use the change leader as an inflection watch only after another comparable report confirms it. This conclusion weakens if: The next two comparable reports reverse the current margin change signal. Evidence: Subros Ltd · 8% | Not enough peers | 2/8 recent comparable periods | 1/1 companies · 20 observations Definition: Operating margin compares operating profit with revenue. Improvement is measured in percentage points, not percentage growth. ### OPM — highest 1. Subros Ltd (SUBROS): 8.0% ### Margin change — fastest expanders 1. Subros Ltd (SUBROS): −1.0 pp ### 20-quarter OPM history - SUBROS: Sep 2021 6.6% | Dec 2021 7.3% | Mar 2022 6.9% | Jun 2022 6.1% | Sep 2022 5.7% | Dec 2022 5.0% | Mar 2023 7.0% | Jun 2023 7.0% | Sep 2023 9.0% | Dec 2023 8.0% | Mar 2024 9.0% | Jun 2024 10% | Sep 2024 9.0% | Dec 2024 9.0% | Mar 2025 10% | Jun 2025 9.0% | Sep 2025 8.0% | Dec 2025 9.0% | Mar 2026 9.0% | Jun 2026 8.0% ### 20-quarter Margin change history - SUBROS: Sep 2021 −5.1 pp | Dec 2021 −3.7 pp | Mar 2022 −2.8 pp | Jun 2022 +0.5 pp | Sep 2022 −0.9 pp | Dec 2022 −2.3 pp | Mar 2023 +0.1 pp | Jun 2023 +0.9 pp | Sep 2023 +3.3 pp | Dec 2023 +3.0 pp | Mar 2024 +2.0 pp | Jun 2024 +3.0 pp | Sep 2024 0.0 pp | Dec 2024 +1.0 pp | Mar 2025 +1.0 pp | Jun 2025 −1.0 pp | Sep 2025 −1.0 pp | Dec 2025 0.0 pp | Mar 2026 −1.0 pp | Jun 2026 −1.0 pp ## Profit Scale & Acceleration What the numbers say: Subros Ltd leads with ₹167 crore of TTM profit, Subros Ltd shows 7% growth from a ₹167 crore profit base. Compare the size of the base and persistence before ranking acceleration above profit scale. Investor read: Subros Ltd sets the level benchmark; use the change leader as an inflection watch only after another comparable report confirms it. This conclusion weakens if: The next two comparable reports reverse the current profit growth signal. Evidence: Subros Ltd · ₹167 crore | Not enough peers | 8/8 recent comparable periods | 1/1 companies · 20 observations Definition: Net profit is the residual after operating costs, interest and tax. Growth off a loss or near-zero base is excluded from the fastest-grower rank. ### Net profit — largest 1. Subros Ltd (SUBROS): ₹167 Cr ### Profit growth — fastest growers 1. Subros Ltd (SUBROS): 7.1% ### 20-quarter Net profit history - SUBROS: Sep 2021 ₹5 Cr | Dec 2021 ₹8 Cr | Mar 2022 ₹17 Cr | Jun 2022 ₹12 Cr | Sep 2022 ₹10 Cr | Dec 2022 ₹8 Cr | Mar 2023 ₹18 Cr | Jun 2023 ₹14 Cr | Sep 2023 ₹27 Cr | Dec 2023 ₹27 Cr | Mar 2024 ₹30 Cr | Jun 2024 ₹35 Cr | Sep 2024 ₹36 Cr | Dec 2024 ₹33 Cr | Mar 2025 ₹46 Cr | Jun 2025 ₹41 Cr | Sep 2025 ₹41 Cr | Dec 2025 ₹35 Cr | Mar 2026 ₹49 Cr | Jun 2026 ₹42 Cr ### 20-quarter Profit growth history - SUBROS: Sep 2021 — | Dec 2021 — | Mar 2022 — | Jun 2022 300% | Sep 2022 100% | Dec 2022 0.0% | Mar 2023 5.9% | Jun 2023 17% | Sep 2023 170% | Dec 2023 238% | Mar 2024 67% | Jun 2024 150% | Sep 2024 33% | Dec 2024 22% | Mar 2025 53% | Jun 2025 17% | Sep 2025 14% | Dec 2025 6.1% | Mar 2026 6.5% | Jun 2026 2.4% ## Return On Capital Employed What the numbers say: Subros Ltd leads ROCE at 19.8%. Subros Ltd has the strongest latest improvement at -2.3 percentage points. Read the leader beside the density of its reported history: a sparse high return is a candidate; a repeated high return is evidence of durability. Investor read: Subros Ltd sets the level benchmark; use the change leader as an inflection watch only after another comparable report confirms it. This conclusion weakens if: The next two comparable reports reverse the current roce change signal. Evidence: Subros Ltd · 19.8% | Not enough peers | 5/8 recent comparable periods | 1/1 companies · 15 observations Definition: ROCE asks how much operating return the business earns on the capital employed. Direction matters, but a single exceptional year should not be mistaken for durability. ### ROCE — highest 1. Subros Ltd (SUBROS): 20% ### ROCE change — fastest improvers 1. Subros Ltd (SUBROS): −2.3 pp ### 20-quarter ROCE history - SUBROS: Sep 2021 11% | Dec 2021 — | Mar 2022 5.8% | Jun 2022 — | Sep 2022 7.6% | Dec 2022 — | Mar 2023 6.3% | Jun 2023 — | Sep 2023 9.4% | Dec 2023 14% | Mar 2024 14% | Jun 2024 19% | Sep 2024 16% | Dec 2024 19% | Mar 2025 17% | Jun 2025 20% | Sep 2025 15% | Dec 2025 19% | Mar 2026 15% | Jun 2026 — ### 20-quarter ROCE change history - SUBROS: Sep 2021 — | Dec 2021 — | Mar 2022 — | Jun 2022 — | Sep 2022 −3.3 pp | Dec 2022 — | Mar 2023 +0.5 pp | Jun 2023 — | Sep 2023 +1.8 pp | Dec 2023 — | Mar 2024 +7.3 pp | Jun 2024 — | Sep 2024 +6.3 pp | Dec 2024 +5.1 pp | Mar 2025 +3.2 pp | Jun 2025 +1.6 pp | Sep 2025 −0.5 pp | Dec 2025 −0.1 pp | Mar 2026 −2.3 pp | Jun 2026 — ## Valuation Against Growth & Quality What the numbers say: Subros Ltd has the lowest comparable PEG at 2.29×. Only 1 of 1 companies have earnings and growth steady enough for the ratio to mean anything, so no broad “cheapest stock” conclusion is defensible unless the current multiple, own-history position and growth durability agree. Investor read: Treat valuation as permission to investigate, never as a standalone reason to buy. This conclusion weakens if: The next two comparable reports reverse the current p/e signal. Evidence: Subros Ltd · 2.29× | Not enough peers | 0/8 recent comparable periods | 1/1 companies · 9 observations Definition: PEG is shown only when earnings are positive and three-year EPS growth is between 5% and 60%. It is recomputed consistently as the trailing P/E divided by that growth rate — reported earnings, never an expected-earnings multiple. On Indian companies it is shown only where the two data feeds agreed. Where any of that fails the ratio is left out rather than printed: a P/E divided by a loss, or by growth measured off a tiny base, is a number that looks precise and means nothing. ### PEG — lowest PEG 1. Subros Ltd (SUBROS): 2.3 ### P/E — lowest P/E 1. Subros Ltd (SUBROS): 28.8 ### 20-quarter PEG history - SUBROS: Sep 2021 — | Dec 2021 — | Mar 2022 — | Jun 2022 — | Sep 2022 — | Dec 2022 5.0 | Mar 2023 4.2 | Jun 2023 1.3 | Sep 2023 — | Dec 2023 — | Mar 2024 — | Jun 2024 — | Sep 2024 — | Dec 2024 — | Mar 2025 0.5 | Jun 2025 0.8 | Sep 2025 1.5 | Dec 2025 1.4 | Mar 2026 1.0 | Jun 2026 2.3 ### 20-quarter P/E history - SUBROS: Sep 2021 28.4 | Dec 2021 39.6 | Mar 2022 50.7 | Jun 2022 64.2 | Sep 2022 58.2 | Dec 2022 42.8 | Mar 2023 42.3 | Jun 2023 59.6 | Sep 2023 50.9 | Dec 2023 52.9 | Mar 2024 39.4 | Jun 2024 43.3 | Sep 2024 42.7 | Dec 2024 32.5 | Mar 2025 27.1 | Jun 2025 40.5 | Sep 2025 47.2 | Dec 2025 34.8 | Mar 2026 25.3 | Jun 2026 31.8 ## What can make this comparison misleading? - A high growth rate can be a low-base artefact. The page keeps level and change separate for that reason. - A high ROCE can be temporary or flattered by a small capital base. Read it beside margin, cash conversion and reinvestment. - The 4-Factor Sector Score ranks research priority, not portfolio action. Management quality, catalysts and risks need equally fresh evidence before capital is deployed. - An “all companies” line chart preserves completeness, but rank changes should be checked against reporting dates before drawing a conclusion. ## Every company - Subros Ltd (SUBROS) — market value ₹4.9K Cr; latest fundamentals Jun 2026 ## Source standing of each company Cross-checked: 1. Unverified: 0. Withheld: 0. Graded companies: 1. Every company's second-feed figures reconcile against the primary source on overlapping reported periods, so nothing here is unverified or withheld. ## Methodology and freshness Fundamentals through Jun 2026; prices through 2026-08-14. Up to 20 quarters per company. Reported history is normalized to Indian rupees crore. Missing values are not interpolated. Derived metrics are calculated only when their inputs are comparable. ## Frequently asked questions ### Is the Auto Ancillaries - AC sector outperforming NIFTY 500? Auto Ancillaries - AC has underperformed NIFTY 500 by 22.9% over 52 weeks and 2.7% over 13 weeks. 0 of 1 covered companies beat NIFTY on Mansfield relative strength, while 0 of 1 beat the sector itself. ### Which Auto Ancillaries - AC company is largest by revenue? Subros Ltd leads with revenue of ₹3,910 crore, based on 1 of 1 comparable companies through Jun 2026. ### Which Auto Ancillaries - AC company is growing fastest? Subros Ltd has the fastest current revenue growth at 13.8%, across 1 of 1 comparable companies. ### Which Auto Ancillaries - AC company has the strongest 4-Factor Sector Score? Subros Ltd ranks first at 43.2/100 with 91% evidence confidence. The score prioritizes research; it is not a buy recommendation. ### Which Auto Ancillaries - AC company has the lowest comparable PEG? Subros Ltd has the lowest comparable PEG at 2.29, among 1 of 1 companies whose earnings and growth are steady enough for the ratio to mean anything. ### How much history does this Auto Ancillaries - AC comparison include? The page compares up to 20 reported quarters per company for fundamentals, returns and valuation, ending Jun 2026. Missing observations remain blank rather than being estimated. ### How is the 4-Factor Sector Score calculated? The four visible contributions add directly: growth and earnings up to 35 points, capital efficiency up to 25, valuation up to 20, and relative strength up to 20. Missing or stale evidence moves only the affected contribution toward neutral. ### Is there a Nifty Auto Ancillaries - AC index? NSE India maintains Nifty indices for several broad sector categories — Nifty Bank, Nifty IT, Nifty Pharma and others — but not for every sub-sector grouping on this site. Whether or not an official Nifty index covers Auto Ancillaries - AC, this page builds its own equal-weight basket of 1 listed Auto Ancillaries - AC companies — one company, one vote, regardless of market value — so no single large company dominates the reading. Figures are as of Jun 2026. ### Which are the best Auto Ancillaries - AC stocks in India? Ranked by this page's four-factor score, Subros Ltd places first among 1 listed Auto Ancillaries - AC companies. That is a ranking of published data — earnings, quality, valuation and market behaviour as of Jun 2026 — and not a recommendation; Sector Alpha is not registered with SEBI as an investment adviser. ### How many Auto Ancillaries - AC stocks are listed in India? This comparison covers 1 listed Auto Ancillaries - AC companies in India, each above the size floor the site applies, with 20 quarters of reported figures per company where the filings exist. The full ranked list is on this page, as of Jun 2026. ### Which Auto Ancillaries - AC company is the biggest? Subros Ltd is the largest, with trailing-twelve-month revenue of ₹3,910 crore. That covers 1 of 1 companies with comparable reporting through Jun 2026. ### Which Auto Ancillaries - AC company has the best profit margins? Subros Ltd has the highest operating margin at 8%, from 1 of 1 comparable companies. Subros Ltd shows the biggest recent improvement, at -1 percentage points. A high margin matters most when it is holding or rising, not when it is peaking. ### Which Auto Ancillaries - AC company makes the most profit? Subros Ltd earns the most, at ₹167 crore of trailing-twelve-month net profit, from 1 of 1 comparable companies. Subros Ltd has the fastest profit growth at 7%, though growth off a small or recovering profit base overstates how much has actually changed. ### Which Auto Ancillaries - AC company earns the highest return on capital? Subros Ltd leads on return on capital employed at 19.8%, across 1 of 1 companies. Read it beside the length of its reported history: a high return that repeats for years is evidence of a durable business, while a single high reading can be a small capital base or one good year. ### Which Auto Ancillaries - AC stock is the cheapest? On PEG — where a LOWER number is cheaper — Subros Ltd screens cheapest at 2.29×. All 1 companies qualify for the ratio comparison. Cheap on a multiple is a reason to investigate, never a reason to buy on its own. ### Is the Auto Ancillaries - AC sector beating the market? Auto Ancillaries - AC has underperformed NIFTY 500 by 22.9% over the last 52 weeks and 2.7% over 13 weeks, measured on an equal-weight index of its current members. Inside the sector, 0 of 1 covered companies are beating the market on their own. Sector strength does not transfer evenly to every stock in it. ### Which Auto Ancillaries - AC stock has the strongest price momentum? Subros Ltd has the strongest relative strength against NIFTY 500. Relative strength answers last, after growth, quality and valuation: price can move well before the fundamentals confirm it, and sometimes without them confirming at all. ### Which Auto Ancillaries - AC company scores highest for research priority? Subros Ltd scores 43.2 out of 100 with 91% evidence confidence, from 12.3 points on growth and earnings, 14.9 on capital efficiency, 8.5 on valuation and 7.5 on relative strength. This ranks what deserves work next. It is not a buy recommendation, and management quality, catalysts and risk still need separate research. ### How many Auto Ancillaries - AC companies does this comparison cover, and over what period? It compares 1 listed companies over up to 20 reported quarters of fundamentals, ending Jun 2026, plus weekly price and relative-strength history. Membership is the full sector list — nothing is dropped for having thin data. ### What is the total market cap of the Auto Ancillaries - AC sector? The 1 Auto Ancillaries - AC companies on this page carry ₹4,946 crore of combined market value. Subros Ltd is the largest at ₹4,946 crore, about 100% of the sector's total on its own. Market value moves with price, so this reading is dated 2026-08-20. ### How is the Auto Ancillaries - AC sector performing? 0 of the 1 covered Auto Ancillaries - AC companies are beating NIFTY 500 on Mansfield relative strength. The sector itself is 22.9% behind NIFTY 500 over 52 weeks on an equal-weight index of its current members. Readings are as of 2026-08-20. ### Why are some values on this page blank? A blank means that company did not report a comparable figure for that period, so nothing is shown. Missing observations are never interpolated, carried forward, or replaced with a similar-looking accounting line, and a company with missing evidence has its research score pulled toward neutral rather than being scored as bad. ### Is this investment advice? No. Every figure here is a deterministic calculation from reported company filings and market data, published for research. It contains no recommendation to buy or sell any security, does not account for your circumstances, and is not a substitute for advice from a licensed adviser.