Sector Alpha Week of 2026-08-20
20-quarter listed-company comparison

Auto Ancillaries - AC Stocks in India

Auto Ancillaries - AC: Subros Ltd owns the largest revenue base AND the fastest current growth.

01 · the index people search for

Nifty Auto Ancillaries - AC Index — Constituents & Performance

All 1 listed Indian Auto Ancillaries - AC companies are named here, largest first — the same constituent set people search for as the Nifty Auto Ancillaries - AC index. Every figure on this page is equal-weighted across those companies, so one large constituent cannot set the reading. Each number carries its own as-of date.

  1. Subros Ltd₹4.9K Cr
02 · sector relative strength, before individual stocks

Is Auto Ancillaries - AC outperforming NIFTY 500?

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%.

-2.7%Sector vs NIFTY 500 · 13 weeks
-22.9%Sector vs NIFTY 500 · 52 weeks
0/1Stocks leading NIFTY 500
0/1Stocks leading sector

Sector metric: — as of latest available · unclassified · direction unavailable.

The central tension: current leadership is concentrated, so durability matters more than rank.

Start with scale. Then earnings trajectory. Then business quality. Only after those three agree should price leadership carry much weight.

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.

Companies
1
complete canonical membership
Combined market value
₹4.9K Cr
Subros Ltd
Revenue growing
1/1
positive TTM year-on-year growth
Beating NIFTY 500
0/1
positive Mansfield relative strength
Comparing 1 of 1
03 · research priority, made explicit

Best Auto Ancillaries - AC Stocks in India (Aug 2026), Ranked by Data

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.

Growth & earnings · 35%Capital efficiency · 25%Valuation · 20%Relative strength · 20%
Subros Ltd has the strongest current balance of earnings trajectory, business quality, valuation and price confirmation, with 91% evidence confidence.
How this score is built, and what the marks mean

Missing observations are not scored as bad. Their missing weight lowers confidence and pulls the final score toward neutral. PEG is not shown when the ratio cannot mean anything: the company must be making a profit, its price-to-earnings must be positive, and its three-year earnings growth must fall between 5% and 60%. Dividing a price multiple by a loss, or by growth measured off a tiny base, produces a number that looks precise and tells you nothing. Under relative strength, one mark per week shows the last 12 weeks: a mark is filled where the company led NIFTY 500 by 5% or more over the 13 weeks ending that week, which is the same test used everywhere on this site. Price stage places the company on the same six-step curve the sector itself is placed on — basing, turning, breaking out, leader, fading, asleep — read from how many weeks running it has led NIFTY 500 and whether that lead is widening or shrinking. It describes where the PRICE stands, not the earnings trajectory and not a recommendation, and it is left blank for a company whose weekly history is too short or too stale to read.

Top 10 Auto Ancillaries - AC Stocks in India

CompanyScorePrice stageGrowth & earnings/35Capital efficiency/25Valuation/20Relative strength/20
1Subros LtdSUBROS 43.2/100Mixed-negative evidence91% evidence ASLEEP 12.3/35 Revenue 13.8% · PAT 7% · OPM change -1 pp 100% evidence 14.9/25 ROCE 19.8% · OPM 8% 100% evidence 8.5/20 P/E 28.8× · PEG 2.29 85% evidence 7.5/20 RS sector 0% · RS bench -11.3% · 1Y -6%1 of 10 weeks ahead 70% evidence
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.
04 · what price has already done

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.

Price and relative strength

Every company, the sector's own index and NIFTY 500 all start level on the left edge of the window, so only the distance between the lines counts — the highest line has risen the most since then, and the chart at the top of this page is drawn the same way. It opens on one year; the buttons beside it stretch that to three or five.

05 · compare level, then change

Revenue Scale & Growth Durability

Subros Ltd is the only Auto Ancillaries - AC company on this page, with Revenue of ₹3,910 crore. The same company also holds the highest Revenue growth, at 13.8%. That is the only usable Revenue reading on this page, current through Jun 2026. Its Revenue series carries 20 reported observations across the 20-quarter window.

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.

LeaderSubros Ltd · ₹3,910 crore
GapNot enough peers
Persistence8/8 recent comparable periods
Coverage1/1 companies · 20 observations

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.

Revenue is compared on a common reported-currency basis. Growth is year-on-year, so seasonality does not masquerade as progress.
Revenuelargest
1Subros Ltd SUBROS₹3.9K Cr
Revenue growthfastest growers
1Subros Ltd SUBROS14%
Revenue · company comparison
1/1 level · 1/1 change

On every company-comparison chart on this page: solid lines show level, dotted lines show change when “Both” is selected, and a missing report breaks the line rather than being invented.

All-company data · latest reported quarter

In every all-company table on this page, each figure is the company’s latest single reported quarter. The rankings above them use trailing-twelve-month or current-market values, so a company can legitimately show a different number in each.

CompanyRevenueRevenue growthReported
Subros Ltd SUBROS₹1.0K Cr18%Jun 2026
Full 20-quarter history · every available company

Revenue · reported quarter history

Subros Ltd · SUBROS

₹529 Cr
₹548 Cr
₹681 Cr
₹709 Cr
₹695 Cr
₹655 Cr
₹748 Cr
₹693 Cr
₹813 Cr
₹732 Cr
₹832 Cr
₹810 Cr
₹828 Cr
₹821 Cr
₹908 Cr
₹878 Cr
₹880 Cr
₹948 Cr
₹1.1K Cr
₹1.0K Cr

Revenue growth · reported quarter history

Subros Ltd · SUBROS

48%
31%
20%
9.8%
-2.3%
17%
12%
11%
17%
1.9%
12%
9.1%
8.4%
6.3%
15%
16%
18%
06 · compare level, then change

Operating Economics & Margin Trend

Subros Ltd is the only Auto Ancillaries - AC company on this page, with OPM of 8%. The same company also holds the highest Margin change, at -1 percentage points. That is the only usable OPM reading on this page, current through Jun 2026. Its OPM series carries 20 reported observations across the 20-quarter window.

What the numbers say: Subros Ltd leads both opm at 8% and margin change at -1 percentage points.

LeaderSubros Ltd · 8%
GapNot enough peers
Persistence2/8 recent comparable periods
Coverage1/1 companies · 20 observations

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.

Operating margin compares operating profit with revenue. Improvement is measured in percentage points, not percentage growth.
OPMhighest
1Subros Ltd SUBROS8.0%
Margin changefastest expanders
1Subros Ltd SUBROS−1.0 pp
Operating margin · company comparison
1/1 level · 1/1 change
All-company data · latest reported quarter
CompanyOPMMargin changeReported
Subros Ltd SUBROS8.0%−1.0 ppJun 2026
Full 20-quarter history · every available company

OPM · reported quarter history

Subros Ltd · SUBROS

6.6%
7.3%
6.9%
6.1%
5.7%
5.0%
7.0%
7.0%
9.0%
8.0%
9.0%
10%
9.0%
9.0%
10%
9.0%
8.0%
9.0%
9.0%
8.0%

Margin change · reported quarter history

Subros Ltd · SUBROS

−5.1 pp
−3.7 pp
−2.8 pp
+0.5 pp
−0.9 pp
−2.3 pp
+0.1 pp
+0.9 pp
+3.3 pp
+3.0 pp
+2.0 pp
+3.0 pp
0.0 pp
+1.0 pp
+1.0 pp
−1.0 pp
−1.0 pp
0.0 pp
−1.0 pp
−1.0 pp
07 · compare level, then change

Profit Scale & Acceleration

Subros Ltd is the only Auto Ancillaries - AC company on this page, with Net profit of ₹167 crore. The same company also holds the highest Profit growth, at 7%. That is the only usable Net profit reading on this page, current through Jun 2026. Its Net profit series carries 20 reported observations across the 20-quarter window.

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.

LeaderSubros Ltd · ₹167 crore
GapNot enough peers
Persistence8/8 recent comparable periods
Coverage1/1 companies · 20 observations

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.

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 profitlargest
1Subros Ltd SUBROS₹167 Cr
Profit growthfastest growers
1Subros Ltd SUBROS7.1%
Net profit · company comparison
1/1 level · 1/1 change
All-company data · latest reported quarter
CompanyNet profitProfit growthReported
Subros Ltd SUBROS₹42 Cr2.4%Jun 2026
Full 20-quarter history · every available company

Net profit · reported quarter history

Subros Ltd · SUBROS

₹5 Cr
₹8 Cr
₹17 Cr
₹12 Cr
₹10 Cr
₹8 Cr
₹18 Cr
₹14 Cr
₹27 Cr
₹27 Cr
₹30 Cr
₹35 Cr
₹36 Cr
₹33 Cr
₹46 Cr
₹41 Cr
₹41 Cr
₹35 Cr
₹49 Cr
₹42 Cr

Profit growth · reported quarter history

Subros Ltd · SUBROS

300%
100%
0.0%
5.9%
17%
170%
238%
67%
150%
33%
22%
53%
17%
14%
6.1%
6.5%
2.4%
08 · compare level, then change

Return On Capital Employed

Subros Ltd is the only Auto Ancillaries - AC company on this page, with ROCE of 19.8%. The same company also holds the highest ROCE change, at -2.3 percentage points. That is the only usable ROCE reading on this page, current through Jun 2026. Its ROCE series carries 15 reported observations across the 20-quarter window.

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.

LeaderSubros Ltd · 19.8%
GapNot enough peers
Persistence5/8 recent comparable periods
Coverage1/1 companies · 15 observations

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.

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.
ROCEhighest
1Subros Ltd SUBROS20%
ROCE changefastest improvers
1Subros Ltd SUBROS−2.3 pp
Return on capital · company comparison
1/1 level · 1/1 change
All-company data · latest reported quarter
CompanyROCEROCE changeReported
Subros Ltd SUBROS15%−2.3 ppJun 2026
Full 20-quarter history · every available company

ROCE · reported quarter history

Subros Ltd · SUBROS

11%
5.8%
7.6%
6.3%
9.4%
14%
14%
19%
16%
19%
17%
20%
15%
19%
15%

ROCE change · reported quarter history

Subros Ltd · SUBROS

−3.3 pp
+0.5 pp
+1.8 pp
+7.3 pp
+6.3 pp
+5.1 pp
+3.2 pp
+1.6 pp
−0.5 pp
−0.1 pp
−2.3 pp
09 · compare level, then change

Valuation Against Growth & Quality

Subros Ltd is the only Auto Ancillaries - AC company on this page, with PEG of 2.29×. The same company also holds the lowest P/E, at 28.8×. That is the only usable PEG reading on this page, current through Jun 2026. Its PEG series carries 9 reported observations across the 20-quarter window.

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.

LeaderSubros Ltd · 2.29×
GapNot enough peers
Persistence0/8 recent comparable periods
Coverage1/1 companies · 9 observations

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.

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.
PEGlowest PEG
1Subros Ltd SUBROS2.3
P/Elowest P/E
1Subros Ltd SUBROS28.8
Valuation · company comparison
1/1 level · 1/1 change
All-company data · latest reported quarter
CompanyPEGP/EReported
Subros Ltd SUBROS2.331.8Jun 2026
Full 20-quarter history · every available company

PEG · reported quarter history

Subros Ltd · SUBROS

5.0
4.2
1.3
0.5
0.8
1.5
1.4
1.0
2.3

P/E · reported quarter history

Subros Ltd · SUBROS

28.4
39.6
50.7
64.2
58.2
42.8
42.3
59.6
50.9
52.9
39.4
43.3
42.7
32.5
27.1
40.5
47.2
34.8
25.3
31.8
10 · before the conclusion, check the blind spots

What can make this comparison misleading?

This Auto Ancillaries - AC comparison names 4 specific ways its own evidence can mislead, all listed below. The one company here reports on comparable dates, so no rank carries a stale marker. A high growth rate can still be a low-base artefact.

Keep these limits visible

  • 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.
11 · evidence and freshness

How was this comparison built?

This comparison is built from the reported filings of 1 Auto Ancillaries - AC company, normalized to a common ₹ scale and a shared quarter axis of up to 20 quarters each. Fundamentals run through Jun 2026 and market data through 2026-08-14. A second data feed fills gaps only after identity and scale reconciliation, and missing observations are never interpolated.

FundamentalsThrough Jun 2026 · up to 20 quarters per company
Market dataThrough 2026-08-14 · weekly price and relative-strength history
Derived metricsGrowth, changes and PEG are calculated only when their inputs are comparable.
Score confidenceMissing and stale evidence reduces confidence and pulls the 0–100 research-priority score toward neutral.
Source standing1 cross-checked · 0 unverified · 0 withheld, of 1 graded companies.
How a second data feed is admitted, and what happens when it disagrees

A second feed is read only after its reported income is matched against the primary source on at least three overlapping periods. Where the two agree the figures fill silently. Where there is too little shared history to compare, the figures are still drawn — they are the only evidence there is — and marked ⚠ unverified everywhere they appear. Where the two are known to disagree, nothing from the second feed is drawn and the affected company is named under the chart it is missing from.

12 · questions investors ask, short speakable answers

Auto Ancillaries - AC company comparison FAQs

These 23 answers restate the Auto Ancillaries - AC comparison above in question form. Every one is computed from the same 1 company and the same reported filings as the rankings and charts, current through Jun 2026. Price and relative-strength answers run through 2026-08-14. Nothing here is estimated, and none of it is a recommendation.

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.

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