APH vs. COHR: Amphenol vs. Coherent Stock Comparison

November 11, 2026

How do Amphenol (APH) and Coherent (COHR) stack up? This page sets them side by side across company profile, performance and risk, profitability, growth, financial strength, dividends, and valuation, with selected fundamentals also measured against each stock's industry-group peers.

Company Profile

Amphenol (APH) and Coherent (COHR) are both classified in the Electronic Components sub-industry within the broader Electronic Equipment, Instruments & Components industry, placing them in the closest GICS peer bucket.

Company profile comparison for Amphenol (APH) and Coherent (COHR)
Profile Item	APH	COHR
Name	Amphenol Corp. Class A Common Stock	Coherent Corp.
Country/Region	United States	United States
GICS Sector	Information Technology	Information Technology
GICS Industry Group	Technology Hardware & Equipment	Technology Hardware & Equipment
GICS Industry	Electronic Equipment, Instruments & Components	Electronic Equipment, Instruments & Components
GICS Sub-Industry	Electronic Components	Electronic Components
Market Capitalization	184.18 billion USD	37.98 billion USD
Currency	USD	USD
Exchange	NYSE	NYSE
Listing Date	November 8, 1991	October 2, 1987
Security Type	Common Stock	Common Stock

Price Performance

Cumulative Growth

APH

COHR

GSPC

Amphenol (APH) vs. Coherent (COHR), with S&P 500 (GSPC) for reference: Growth of a $10,000 investment over the past five years. Adjusted for dividends and splits.

Trailing Returns

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Trailing total returns for Amphenol (APH) and Coherent (COHR). Returns over one year are annualized.

Calendar-Year Returns

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Calendar-year total returns for Amphenol (APH) and Coherent (COHR). Each bar is that year's total return, measured year-end to year-end.

Performance Metrics

Price performance metrics for Amphenol (APH) and Coherent (COHR)
Metric	APH	COHR
Total Return (1Y)	15.56%	48.11%
Total Return (3Y, Annualized)	56.62%	90.06%
Total Return (5Y, Annualized)	32.33%	28.94%

Risk Profile

Drawdown History

APH

COHR

GSPC

Amphenol (APH) vs. Coherent (COHR), with S&P 500 (GSPC) for reference: Drawdown from the running peak over the past five years. Each line shows the decline from its prior peak; 0% marks a new high.

Return Distribution

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Distribution of monthly total returns for Amphenol (APH) and Coherent (COHR). Each bar is the share of months whose return fell in that 5% bucket.

Risk Metrics

Coherent (COHR) carries a highly aggressive beta of 2.19, indicating much higher sensitivity to broad-market moves, whereas Amphenol (APH) is closer to market-like at 1.27 — a noticeable difference in market-sensitivity profile.

Risk profile metrics for Amphenol (APH) and Coherent (COHR)
Metric	APH	COHR
Volatility (1Y, Annualized)	48.51%	91.27%
Beta (5Y)	1.27	2.19
Max Drawdown (5Y)	-28.73%	-62.87%
Avg. Volume (3M)	12.40M	7.56M

Risk-Adjusted Performance

Risk-Return Positioning

APH and COHR are plotted by 1-year volatility (risk) and 1-year return. The dashed Capital Allocation Line runs from the risk-free rate through the shared industry median.

Risk-Adjusted Metrics

Risk-adjusted metrics for Amphenol (APH) and Coherent (COHR)
Metric	APH	COHR
Sharpe Ratio (1Y)	0.23	0.48
Sortino Ratio (1Y)	0.32	0.70

Profitability

ROE (TTM)

Amphenol (APH) at 40.08% sits in the top ROE quartile, while Coherent (COHR) at 9.27% is closer to the peer norm — stronger capital efficiency for APH.

APH

Technology Hardware & Equipment industry group

40.08%

Max: 42.47%
APH: 40.08%
Q3: 19.13%
Median: 11.00%
Q1: 1.63%
Min: -20.62%

COHR

Technology Hardware & Equipment industry group

9.27%

Max: 42.47%
Q3: 19.13%
Median: 11.00%
COHR: 9.27%
Q1: 1.63%
Min: -20.62%

Amphenol (APH) vs. Coherent (COHR): A comparison of their ROE against the Technology Hardware & Equipment industry group benchmark.

Net Margin (TTM)

For every dollar of sales, both Amphenol (APH) at 17.95% and Coherent (COHR) at 12.18% retain more as net profit than most peers, landing in the top net margin quartile of their industries.

APH

Technology Hardware & Equipment industry group

17.95%

Max: 27.60%
APH: 17.95%
Q3: 11.66%
Median: 4.08%
Q1: 0.00%
Min: -11.02%

COHR

Technology Hardware & Equipment industry group

12.18%

Max: 27.60%
COHR: 12.18%
Q3: 11.66%
Median: 4.08%
Q1: 0.00%
Min: -11.02%

Amphenol (APH) vs. Coherent (COHR): A comparison of their net margin against the Technology Hardware & Equipment industry group benchmark.

Operating Margin (TTM)

Amphenol (APH) at 29.68% operates in the top operating margin quartile, ahead of Coherent (COHR) at 16.30%, which runs around its industry’s norm.

APH

Technology Hardware & Equipment industry group

29.68%

Max: 36.27%
APH: 29.68%
Q3: 18.36%
Median: 8.84%
Q1: 1.46%
Min: -21.39%

COHR

Technology Hardware & Equipment industry group

16.30%

Max: 36.27%
Q3: 18.36%
COHR: 16.30%
Median: 8.84%
Q1: 1.46%
Min: -21.39%

Amphenol (APH) vs. Coherent (COHR): A comparison of their operating margin against the Technology Hardware & Equipment industry group benchmark.

Profitability Metrics

Profitability metrics for Amphenol (APH) and Coherent (COHR)
Metric	APH	COHR
ROE (TTM)	40.08%	9.27%
ROA (TTM)	16.00%	3.99%
Net Margin (TTM)	17.95%	12.18%
Operating Margin (TTM)	29.68%	16.30%
Gross Margin (TTM)	39.21%	38.16%

Growth

Revenue Growth

Amphenol (APH) at 51.71% sits in the top revenue growth quartile, while Coherent (COHR) at 22.51% is closer to the peer norm — faster top-line expansion for APH.

Amphenol (APH) vs. Coherent (COHR): A comparison of their Revenue Growth across different time periods.

EPS Growth

Only one side can be read here: Amphenol (APH) reports EPS growth of 73.96%, ranked against its industry; Coherent (COHR) has no EPS growth figure this period.

Amphenol (APH) vs. Coherent (COHR): A comparison of their EPS Growth across different time periods.

Growth Metrics

Growth metrics for Amphenol (APH) and Coherent (COHR)
Metric	APH	COHR
Revenue Growth (YoY)	51.71%	22.51%
Revenue Growth (3Y CAGR)	22.31%	11.32%
EPS Growth (YoY)	73.96%	--
EPS Growth (3Y CAGR)	29.72%	--

Financial Strength

Current Ratio (MRQ)

Both Amphenol (APH) at 1.94 and Coherent (COHR) at 2.29 carry current ratio within their industries’ typical mid-ranges, suggesting balanced short-term liquidity relative to peers.

APH

Technology Hardware & Equipment industry group

1.94

Max: 5.34
Q3: 3.02
Median: 1.95
APH: 1.94
Q1: 1.32
Min: 0.17

COHR

Technology Hardware & Equipment industry group

2.29

Max: 5.34
Q3: 3.02
COHR: 2.29
Median: 1.95
Q1: 1.32
Min: 0.17

Amphenol (APH) vs. Coherent (COHR): A comparison of their current ratio against the Technology Hardware & Equipment industry group benchmark.

Debt / Equity (MRQ)

Coherent (COHR) at 0.37 carries an industry-typical debt-to-equity mix, while Amphenol (APH) at 1.03 uses more debt funding than most peers.

APH

Technology Hardware & Equipment industry group

1.03

Max: 1.76
APH: 1.03
Q3: 0.78
Median: 0.24
Q1: 0.04
Min: 0.01

COHR

Technology Hardware & Equipment industry group

0.37

Max: 1.76
Q3: 0.78
COHR: 0.37
Median: 0.24
Q1: 0.04
Min: 0.01

Amphenol (APH) vs. Coherent (COHR): A comparison of their debt-to-equity ratio against the Technology Hardware & Equipment industry group benchmark.

Financial Strength Metrics

Financial strength metrics for Amphenol (APH) and Coherent (COHR)
Metric	APH	COHR
Current Ratio (MRQ)	1.94	2.29
Debt / Equity (MRQ)	1.03	0.37
Net Debt / EBITDA	1.15	1.56

Dividends

Dividend Yield (TTM)

Coherent (COHR) pays no dividend (yield 0.00%) — it may be reinvesting, using buybacks, or simply not returning cash through dividends. Meanwhile Amphenol (APH) reports a yield of 0.70%, ranking against industry peers normally.

APH

Technology Hardware & Equipment industry group

0.70%

Max: 0.73%
APH: 0.70%
Q3: 0.31%
Median: 0.00%
Q1: 0.00%
Min: 0.00%

COHR

Technology Hardware & Equipment industry group

0.00%

Max: 0.73%
Q3: 0.31%
COHR: 0.00%
Median: 0.00%
Q1: 0.00%
Min: 0.00%

Amphenol (APH) vs. Coherent (COHR): A comparison of their dividend yield against the Technology Hardware & Equipment industry group benchmark.

Dividend Payout Ratio (TTM)

Coherent (COHR) pays no dividend (payout 0.00%) — it may be reinvesting, using buybacks, or simply not returning cash through dividends. Meanwhile Amphenol (APH) reports a payout of 21.74%, ranking against industry peers normally.

APH

Technology Hardware & Equipment industry group

21.74%

Max: 32.27%
APH: 21.74%
Q3: 14.48%
Median: 0.00%
Q1: 0.00%
Min: 0.00%

COHR

Technology Hardware & Equipment industry group

0.00%

Max: 32.27%
Q3: 14.48%
COHR: 0.00%
Median: 0.00%
Q1: 0.00%
Min: 0.00%

Amphenol (APH) vs. Coherent (COHR): A comparison of their payout ratio against the Technology Hardware & Equipment industry group benchmark.

Dividend Metrics

Dividend metrics for Amphenol (APH) and Coherent (COHR)
Metric	APH	COHR
Dividend Yield (TTM)	0.70%	0.00%
Dividend Payout Ratio (TTM)	21.74%	0.00%

Valuation

P/E Ratio (TTM)

Both Amphenol (APH) at 32.43 and Coherent (COHR) at 39.92 land around their industries’ usual P/E ratio levels — neither is getting a clear earnings-multiple discount or premium versus peers.

APH

Technology Hardware & Equipment industry group

32.43

Max: 69.48
Q3: 41.02
APH: 32.43
Median: 26.39
Q1: 19.36
Min: 6.07

COHR

Technology Hardware & Equipment industry group

39.92

Max: 69.48
Q3: 41.02
COHR: 39.92
Median: 26.39
Q1: 19.36
Min: 6.07

Amphenol (APH) vs. Coherent (COHR): A comparison of their P/E ratio against the Technology Hardware & Equipment industry group benchmark.

P/S Ratio (TTM)

On P/S ratio, both Amphenol (APH) at 5.57 and Coherent (COHR) at 4.80 are priced roughly in line with their industries — neither looks cheap nor rich on a sales basis.

APH

Technology Hardware & Equipment industry group

5.57

Max: 11.30
Q3: 5.82
APH: 5.57
Median: 2.56
Q1: 1.05
Min: 0.00

COHR

Technology Hardware & Equipment industry group

4.80

Max: 11.30
Q3: 5.82
COHR: 4.80
Median: 2.56
Q1: 1.05
Min: 0.00

Amphenol (APH) vs. Coherent (COHR): A comparison of their P/S ratio against the Technology Hardware & Equipment industry group benchmark.

P/B Ratio (MRQ)

Coherent (COHR) at 3.35 is valued about in line with its industry on P/B ratio, while Amphenol (APH) at 10.75 carries an above-peer premium to book — APH is pricier on assets.

APH

Technology Hardware & Equipment industry group

10.75

APH: 10.75
Max: 10.75
Q3: 5.52
Median: 3.17
Q1: 1.79
Min: 0.33

COHR

Technology Hardware & Equipment industry group

3.35

Max: 10.75
Q3: 5.52
COHR: 3.35
Median: 3.17
Q1: 1.79
Min: 0.33

Amphenol (APH) vs. Coherent (COHR): A comparison of their P/B ratio against the Technology Hardware & Equipment industry group benchmark.

Valuation Metrics

Valuation metrics for Amphenol (APH) and Coherent (COHR)
Metric	APH	COHR
P/E Ratio (TTM)	32.43	39.92
P/S Ratio (TTM)	5.57	4.80
P/B Ratio (MRQ)	10.75	3.35
Free Cash Flow Yield (TTM)	2.33%	-4.44%