AEIS vs APTV vs FSS Stock Comparison

Advanced Energy Industries, Aptiv and Federal Signal Prices as of Oct 27, 2026 Peers: Industry group
APTV Aptiv PLC
$43.66 -2.5% 1M -49.3% 1Y
Market cap
$9.10B
P/E
42.0x
Revenue (TTM)
$18.73B
Div. yield
–
Electrical Equipment Industrials
1 win
FSS Federal Signal Corp /De/
$115.92 +1.1% 1M -7.5% 1Y
Market cap
$7.08B
P/E
24.7x
Revenue (TTM)
$2.45B
Div. yield
0.51%
Heavy Equipment Industrials
7 wins

Head to Head

12 decided of 12

Federal Signal leads on 7 of the 12 questions below (Federal Signal 7, Advanced Energy Industries 4, Aptiv 1). Which ones matter depends on what you are buying for; a cheap multiple and slow growth often come together.

QuestionAEISAPTVFSSLeader
Larger companyMarket capitalisation $9.32B $9.10B $7.08B AEIS
Cheaper on earningsLower P/E, profitable companies only 41.3x 42.0x 24.7x FSS
Cheaper on forward earningsLower price / next fiscal year consensus EPS 21.7x 8.0x 23.6x APTV
Faster revenue growthRevenue growth, trailing twelve months +24.6% +5.3% +24.0% AEIS
More profitableNet margin, trailing twelve months 10.8% 1.2% 11.7% FSS
Better return on capitalReturn on invested capital 10.3% 2.6% 15.3% FSS
Less leveragedLower net debt / EBITDA -0.4x 2.3x 0.8x AEIS
Higher dividend yieldTrailing dividend yield 0.17% 0.00% 0.51% FSS
Better 1-year returnPrice return, last 12 months +13.5% -49.3% -7.5% AEIS
Better 5-year returnAnnualised price return, 5 years +20.6%/yr -24.0%/yr +22.1%/yr FSS
Less volatileAnnualised volatility, 1 year 65.1% 44.6% 35.0% FSS
Higher overall scoreMean of the five percentile scores vs peers 45/100 56/100 75/100 FSS

Percentile Scorecard

AEISAPTVFSS

Each axis is the mean percentile of its metrics against the company's industry group. 100 is the best in the group, 50 the middle.

Scores by Axis

AxisAEISAPTVFSS
Valuation 13 #177 of 203 96 #10 of 203 51 #101 of 203
Growth 76 #46 of 188 14 #161 of 188 94 #13 of 188
Profitability 54 #84 of 183 36 #117 of 183 90 #20 of 183
Financial Health 60 #87 of 217 33 #145 of 217 75 #55 of 217
Shareholder Returns 19 #124 of 153 99 #3 of 153 65 #54 of 153
Overall 45 56 75
  • AEIS ranked among 222 companies in Machinery
  • APTV ranked among 222 companies in Machinery
  • FSS ranked among 222 companies in Machinery

Price Performance

Price return, split-adjusted, before dividends. Click a name to hide or show it.

Returns

PeriodAEISAPTVFSSSPY
1 month -16.7%-2.5%+1.1% -0.2%
3 months -14.8%-26.5%-1.6% +3.9%
6 months -36.9%-26.2%+3.7% +8.2%
Year to date +11.2%-42.6%+6.8% +12.9%
1 year +13.5%-49.3%-7.5% +12.3%
3 years +165.2%-49.2%+102.4% +87.4%
3 years, per year +38.4%-20.2%+26.5% +23.3%
5 years +155.3%-74.6%+171.6% +67.9%
5 years, per year +20.6%-24.0%+22.1% +10.9%
10 years +392.1%-32.3%+848.6% +261.1%
10 years, per year +17.3%-3.8%+25.2% +13.7%

Risk

MeasureAEISAPTVFSSSPY
Volatility, 1Y 65.1%44.6%35.0% 12.7%
Downside volatility, 1Y 67.5%48.4%35.9% 12.7%
Beta vs S&P 500, 1Y 2.731.161.28 1.00
Return / volatility, 1Y 0.21-1.11-0.21 0.97
Max drawdown, 5Y -44.3%-76.0%-33.3% -25.4%
From 52-week high -40.1%-50.8%-13.3% -1.2%
52-week high $389.05$88.67$133.73 $779.14
52-week low $188.88$42.69$104.77 $631.97

Valuation History

Weekly multiples on trailing twelve-month fundamentals. Negative or extreme readings (a loss year, a collapsed denominator) are left out so the chart stays readable.

MultipleAEISAPTVFSS
P/E now vs peer median 41.3xmedian 25.2x 42.0xmedian 25.2x 24.7xmedian 25.2x
P/S now vs peer median 4.6xmedian 1.9x 0.5xmedian 1.9x 2.9xmedian 1.9x
EV/EBITDA now vs peer median 27.4xmedian 14.0x 6.8xmedian 14.0x 15.4xmedian 14.0x
P/FCF now vs peer median 106.5xmedian 21.7x 11.1xmedian 21.7x 20.9xmedian 21.7x
P/B now vs peer median 6.4xmedian 2.3x 1.0xmedian 2.3x 4.7xmedian 2.3x
PEG now vs peer median 11.25median 1.32 -1.32median 1.32 0.87median 1.32

Financial History

Reported figures by fiscal period, placed on the calendar year (or quarter) each period ended in, so companies with different fiscal years line up.

Trailing twelve monthsAEISAPTVFSS
Revenue $2.04B $18.73B $2.45B
Gross profit $800.50M $3.68B $714.00M
Operating income $269.20M $995.00M $395.40M
Net income $219.40M $231.00M $285.40M
Free cash flow $87.50M $817.00M $339.20M
R&D $246.60M – –
EPS (diluted) $5.19 $1.04 $4.64
Cash & equivalents $1.40B $761.00M $62.80M
Total debt $3.30B $5.35B $453.60M
Shares (diluted) 42.30M 212.10M 61.50M
Enterprise value $5.67B $1.95B $6.82B

All Metrics

58 metrics · best in bold

Bold marks the best reading: the lowest positive value for multiples, leverage and payout, the highest for everything else. The bar under each value is its percentile against that company's own peers. Hover a value for its rank and the peer median.

Valuation

12 metrics
MetricAEISAPTVFSS
P/E 41.3x 42.0x 24.7x
P/FCF 106.5x 11.1x 20.9x
P/Operating cash flow 39.0x 6.1x 19.0x
P/S 4.6x 0.5x 2.9x
P/B 6.4x 1.0x 4.7x
P/Tangible book 6.9x 1.3x 6.3x
EV/EBITDA 27.4x 6.8x 15.4x
EV/EBIT 34.1x 13.8x 18.9x
EV/Revenue 4.5x 0.7x 3.1x
EV/FCF 105.0x 16.8x 22.0x
EV/Operating cash flow 38.4x 9.2x 20.0x
PEG (3Y EPS CAGR) 11.25 -1.32 0.87

Growth

14 metrics
MetricAEISAPTVFSS
Revenue growth (1Y) 24.6% 5.3% 24.0%
Revenue CAGR (3Y) 3.3% -1.0% 16.1%
Gross profit growth (1Y) 32.8% 4.6% 24.5%
Gross profit CAGR (3Y) 6.0% 4.4% 22.1%
Operating income growth (1Y) 216.7% -43.3% 27.8%
Operating income CAGR (3Y) 9.4% -15.8% 28.8%
Net income growth (1Y) 161.5% -77.6% 28.8%
Net income CAGR (3Y) 7.6% -38.3% 28.6%
EPS growth (1Y) 133.8% -77.7% 28.4%
EPS CAGR (3Y) 3.7% -31.9% 28.6%
Operating cash flow growth (1Y) 23.3% -36.6% 45.6%
Operating cash flow CAGR (3Y) 7.6% -7.8% 59.2%
Free cash flow growth (1Y) -30.8% -52.9% 49.8%
Free cash flow CAGR (3Y) -11.1% -7.0% 73.3%

Profitability

14 metrics
MetricAEISAPTVFSS
Gross margin 39.3% 19.6% 29.2%
EBITDA margin 16.5% 10.7% 19.8%
Operating margin 13.2% 5.3% 16.2%
Pretax margin 12.1% 4.1% 15.2%
Net margin 10.8% 1.2% 11.7%
FCF margin 4.3% 4.4% 13.9%
Operating cash flow margin 11.7% 7.9% 15.2%
Return on equity 15.4% 2.6% 19.4%
Return on assets 7.3% 1.1% 11.7%
Return on invested capital 10.3% 2.6% 15.3%
Return on capital employed 11.3% 5.3% 18.5%
Asset turnover 0.7x 0.9x 1.0x
Cash conversion (OCF / net income) 1.1x 6.4x 1.3x
Stock comp / revenue 3.4% 0.7% 0.6%

Financial Health

11 metrics
MetricAEISAPTVFSS
Debt / assets 36.9% 29.8% 18.6%
Debt / equity 0.9x 0.6x 0.3x
Net debt / EBITDA -0.4x 2.3x 0.8x
Debt / FCF 14.4x 6.6x 1.3x
Liabilities / assets 57.5% 51.4% 38.2%
Equity / assets 42.5% 48.6% 61.8%
Interest coverage 17.1x 3.0x 19.3x
Current ratio 3.8x 2.0x 2.7x
Quick ratio 2.8x 1.1x 1.1x
Cash ratio 2.2x 0.3x 0.2x
Altman Z-score 4.81 2.45 7.19

Shareholder Returns

7 metrics
MetricAEISAPTVFSS
Dividend yield 0.2% – 0.5%
Net buyback yield 0.1% 7.9% 0.0%
Shareholder yield 0.2% 7.9% 0.5%
Payout ratio (earnings) – – 12.6%
Payout ratio (FCF) – – 10.6%
Dividend growth (1Y) – – 13.6%
Dividend CAGR (3Y) – – 17.0%

Analyst Estimates

Solid lines are reported fiscal-year results; dashed lines are the consensus for the years ahead. Hover a year for the analysts' high and low, and how each result compared with its estimate.

ConsensusAEISAPTVFSS
Forward P/E 21.7xFY2026 8.0xFY2026 23.6xFY2026
EPS, next fiscal year $10.74FY2026 $5.49FY2026 $4.92FY2026
EPS growth, next FY +67.6%FY2026 -17.1%FY2026 +16.3%FY2026
EPS growth, the year after +37.5% +13.5% +10.0%
Revenue, next fiscal year $2.55BFY2026 $13.02BFY2026 $2.79BFY2026
Revenue growth, next FY +41.5%FY2026 -36.2%FY2026 +28.1%FY2026
Revenue growth, the year after +25.2% +4.0% -5.3%

Institutional Ownership

13F filings, quarter ended Jun 30, 2026
HoldersAEISAPTVFSS
Held by institutions 100.0% 98.6% 100.0%
Institutions holding 678 659 474
Change in shares held, QoQ -2.0% +9.2% +3.9%
Institutions buying 388 330 249
Institutions selling 218 260 152
Buyers to sellers 1.78 1.27 1.64

Return Correlation

Daily returns, last 12 months

1.00 means two stocks move in lockstep, 0 that they move independently. Pairs below about 0.5 diversify each other.

AEISAPTVFSS
AEIS 1.00 0.19 0.39
APTV 0.19 1.00 0.17
FSS 0.39 0.17 1.00

Add a Peer

Largest companies in the same industry

Related Comparisons

Frequently Asked Questions

Which is bigger, AEIS, APTV and FSS?

Advanced Energy Industries (AEIS) is the largest by market capitalisation: Advanced Energy Industries (AEIS) $9.32B, Aptiv (APTV) $9.10B, Federal Signal (FSS) $7.08B.

Which stock is cheaper, AEIS, APTV and FSS?

Federal Signal (FSS) trades on the lowest price-to-earnings ratio (Advanced Energy Industries (AEIS) 41.3x, Aptiv (APTV) 42.0x, Federal Signal (FSS) 24.7x). On next year's consensus earnings, Aptiv (APTV) is cheapest (Advanced Energy Industries (AEIS) 21.7x, Aptiv (APTV) 8.0x, Federal Signal (FSS) 23.6x). A lower multiple can reflect slower expected growth, so read it next to the growth figures.

Which company is growing faster?

Advanced Energy Industries (AEIS) grew revenue fastest over the trailing twelve months: Advanced Energy Industries (AEIS) +24.6%, Aptiv (APTV) +5.3%, Federal Signal (FSS) +24.0%.

Which company is more profitable?

Federal Signal (FSS) has the highest net margin (Advanced Energy Industries (AEIS) 10.8%, Aptiv (APTV) 1.2%, Federal Signal (FSS) 11.7%). On return on invested capital, Federal Signal (FSS) leads (Advanced Energy Industries (AEIS) 10.3%, Aptiv (APTV) 2.6%, Federal Signal (FSS) 15.3%).

Which stock has performed better?

Over the past year Advanced Energy Industries (AEIS) returned the most: Advanced Energy Industries (AEIS) +13.5%, Aptiv (APTV) -49.3%, Federal Signal (FSS) -7.5%. Over five years, Federal Signal (FSS) compounded fastest (Advanced Energy Industries (AEIS) +20.6%/yr, Aptiv (APTV) -24.0%/yr, Federal Signal (FSS) +22.1%/yr). Returns are price only, before dividends.

Which pays a higher dividend?

Federal Signal (FSS) has the highest dividend yield: Advanced Energy Industries (AEIS) 0.17%, Aptiv (APTV) 0.00%, Federal Signal (FSS) 0.51%. Aptiv (APTV) pays no regular dividend.

Which stock is riskier?

By one-year price volatility, Federal Signal (FSS) has been the steadiest (Advanced Energy Industries (AEIS) 65.1%, Aptiv (APTV) 44.6%, Federal Signal (FSS) 35.0%). Volatility measures how widely the price swings, not the risk of the business.

Which is the better stock, AEIS, APTV and FSS?

There is no single answer; it depends on what you are buying for. On the 12 head-to-head measures on this page, Federal Signal (FSS) leads on 7. Business Quant does not give investment advice; use the comparison as a starting point for your own research.

Data from SEC filings, exchange prices and consensus estimates, via Business Quant. Percentile scores compare each company with its own peer group, so two companies' scores are each relative to different peers unless you rank against the whole market. Price returns exclude dividends. Nothing on this page is investment advice.