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APH vs. WDC: Amphenol vs. Western Digital Stock Comparison

How do Amphenol (APH) and Western Digital (WDC) 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 Western Digital (WDC) both fall under the Technology Hardware & Equipment industry group, but APH is classified in Electronic Equipment, Instruments & Components while WDC is classified in Technology Hardware, Storage & Peripherals.

Company profile comparison for Amphenol (APH) and Western Digital (WDC)
Profile ItemAPHWDC
NameAmphenol Corp. Class A Common StockWestern Digital Corp.
Country/RegionUnited StatesUnited States
GICS SectorInformation TechnologyInformation Technology
GICS Industry GroupTechnology Hardware & EquipmentTechnology Hardware & Equipment
GICS IndustryElectronic Equipment, Instruments & ComponentsTechnology Hardware, Storage & Peripherals
GICS Sub-IndustryElectronic ComponentsTechnology Hardware, Storage & Peripherals
Market Capitalization184.18 billion USD98.74 billion USD
CurrencyUSDUSD
ExchangeNYSENasdaq
Listing DateNovember 8, 1991October 31, 1978
Security TypeCommon StockCommon Stock

Price Performance

Cumulative Growth

APH
WDC
GSPC
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Amphenol (APH) vs. Western Digital (WDC), 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 Western Digital (WDC). Returns over one year are annualized.

Calendar-Year Returns

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

Performance Metrics

Price performance metrics for Amphenol (APH) and Western Digital (WDC)
MetricAPHWDC
Total Return (1Y)15.56%78.89%
Total Return (3Y, Annualized)56.62%106.11%
Total Return (5Y, Annualized)32.33%47.06%

Risk Profile

Drawdown History

APH
WDC
GSPC
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Amphenol (APH) vs. Western Digital (WDC), 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 Western Digital (WDC). Each bar is the share of months whose return fell in that 5% bucket.

Risk Metrics

Western Digital (WDC) carries a highly aggressive beta of 2.35, 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 Western Digital (WDC)
MetricAPHWDC
Volatility (1Y, Annualized)48.51%83.20%
Beta (5Y)1.272.35
Max Drawdown (5Y)-28.73%-64.64%
Avg. Volume (3M)12.40M8.01M

Risk-Adjusted Performance

Risk-Return Positioning

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APH and WDC 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 Western Digital (WDC)
MetricAPHWDC
Sharpe Ratio (1Y)0.230.90
Sortino Ratio (1Y)0.321.32

Profitability

ROE (TTM)

Both companies show strong equity returns, but Western Digital (WDC) at 129.60% is the standout with ROE above its industry range; Amphenol (APH) at 40.08% also sits in the top quartile.

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%

WDC

Technology Hardware & Equipment industry group

129.60%

WDC
129.60%
Max
42.47%
Q3
19.13%
Median
11.00%
Q1
1.63%
Min
-20.62%
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Amphenol (APH) vs. Western Digital (WDC): A comparison of their ROE against the Technology Hardware & Equipment industry group benchmark.

Net Margin (TTM)

Western Digital (WDC) at 69.20% keeps the most of each sales dollar — above its industry’s net margin range — and Amphenol (APH) at 17.95% also retains a top-quartile share.

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%

WDC

Technology Hardware & Equipment industry group

69.20%

WDC
69.20%
Max
27.60%
Q3
11.66%
Median
4.08%
Q1
0.00%
Min
-11.02%
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Amphenol (APH) vs. Western Digital (WDC): A comparison of their net margin against the Technology Hardware & Equipment industry group benchmark.

Operating Margin (TTM)

Western Digital (WDC) at 47.68% shows unusually strong operating efficiency — above its industry’s operating margin range — and Amphenol (APH) at 29.68% also operates in the top quartile.

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%

WDC

Technology Hardware & Equipment industry group

47.68%

WDC
47.68%
Max
36.27%
Q3
18.36%
Median
8.84%
Q1
1.46%
Min
-21.39%
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Amphenol (APH) vs. Western Digital (WDC): A comparison of their operating margin against the Technology Hardware & Equipment industry group benchmark.

Profitability Metrics

Profitability metrics for Amphenol (APH) and Western Digital (WDC)
MetricAPHWDC
ROE (TTM)40.08%129.60%
ROA (TTM)16.00%25.88%
Net Margin (TTM)17.95%69.20%
Operating Margin (TTM)29.68%47.68%
Gross Margin (TTM)39.21%52.60%

Growth

Revenue Growth

Both Amphenol (APH) at 51.71% and Western Digital (WDC) at 35.70% sit in the top peer quartile for revenue growth, so each is growing its top line faster than typical industry peers.

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Amphenol (APH) vs. Western Digital (WDC): A comparison of their Revenue Growth across different time periods.

EPS Growth

Both companies show strong earnings momentum, but Western Digital (WDC) at 372.38% is the standout with EPS growth above its industry range; Amphenol (APH) at 73.96% also sits in the top quartile.

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Amphenol (APH) vs. Western Digital (WDC): A comparison of their EPS Growth across different time periods.

Growth Metrics

Growth metrics for Amphenol (APH) and Western Digital (WDC)
MetricAPHWDC
Revenue Growth (YoY)51.71%35.70%
Revenue Growth (3Y CAGR)22.31%27.35%
EPS Growth (YoY)73.96%372.38%
EPS Growth (3Y CAGR)29.72%--

Financial Strength

Current Ratio (MRQ)

Both Amphenol (APH) at 1.94 and Western Digital (WDC) at 1.43 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

WDC

Technology Hardware & Equipment industry group

1.43

Max
5.34
Q3
3.02
Median
1.95
WDC
1.43
Q1
1.32
Min
0.17
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Amphenol (APH) vs. Western Digital (WDC): A comparison of their current ratio against the Technology Hardware & Equipment industry group benchmark.

Debt / Equity (MRQ)

Western Digital (WDC) at 0.10 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

WDC

Technology Hardware & Equipment industry group

0.10

Max
1.76
Q3
0.78
Median
0.24
WDC
0.10
Q1
0.04
Min
0.01
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Amphenol (APH) vs. Western Digital (WDC): 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 Western Digital (WDC)
MetricAPHWDC
Current Ratio (MRQ)1.941.43
Debt / Equity (MRQ)1.030.10
Net Debt / EBITDA1.15-0.06

Dividends

Dividend Yield (TTM)

Amphenol (APH) at 0.70% delivers top-quartile income for its industry, while Western Digital (WDC) at 0.21% pays a more typical yield — both are credible income propositions, APH the richer one.

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%

WDC

Technology Hardware & Equipment industry group

0.21%

Max
0.73%
Q3
0.31%
WDC
0.21%
Median
0.00%
Q1
0.00%
Min
0.00%
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Amphenol (APH) vs. Western Digital (WDC): A comparison of their dividend yield against the Technology Hardware & Equipment industry group benchmark.

Dividend Payout Ratio (TTM)

Western Digital (WDC) at 1.93% pays out a band-typical share of earnings, while Amphenol (APH) at 21.74% distributes more than its industry norm — less retained, thinner cover.

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%

WDC

Technology Hardware & Equipment industry group

1.93%

Max
32.27%
Q3
14.48%
WDC
1.93%
Median
0.00%
Q1
0.00%
Min
0.00%
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Amphenol (APH) vs. Western Digital (WDC): A comparison of their payout ratio against the Technology Hardware & Equipment industry group benchmark.

Dividend Metrics

Dividend metrics for Amphenol (APH) and Western Digital (WDC)
MetricAPHWDC
Dividend Yield (TTM)0.70%0.21%
Dividend Payout Ratio (TTM)21.74%1.93%

Valuation

P/E Ratio (TTM)

Western Digital (WDC) at 9.28 sits in the cheaper P/E ratio quartile, while Amphenol (APH) at 32.43 is closer to its industry’s usual earnings multiple — a discount for WDC, though growth and earnings durability still matter.

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

WDC

Technology Hardware & Equipment industry group

9.28

Max
69.48
Q3
41.02
Median
26.39
Q1
19.36
WDC
9.28
Min
6.07
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Amphenol (APH) vs. Western Digital (WDC): A comparison of their P/E ratio against the Technology Hardware & Equipment industry group benchmark.

P/S Ratio (TTM)

Amphenol (APH) at 5.57 is priced about in line with its industry on P/S ratio, while Western Digital (WDC) at 6.82 sits in the pricier quartile — WDC costs more per dollar of sales.

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

WDC

Technology Hardware & Equipment industry group

6.82

Max
11.30
WDC
6.82
Q3
5.82
Median
2.56
Q1
1.05
Min
0.00
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Amphenol (APH) vs. Western Digital (WDC): A comparison of their P/S ratio against the Technology Hardware & Equipment industry group benchmark.

P/B Ratio (MRQ)

Both Amphenol (APH) at 10.75 and Western Digital (WDC) at 10.55 carry a premium to book value versus peers, sitting in the upper P/B ratio quartile of their industries.

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

WDC

Technology Hardware & Equipment industry group

10.55

Max
10.75
WDC
10.55
Q3
5.52
Median
3.17
Q1
1.79
Min
0.33
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Amphenol (APH) vs. Western Digital (WDC): A comparison of their P/B ratio against the Technology Hardware & Equipment industry group benchmark.

Valuation Metrics

Valuation metrics for Amphenol (APH) and Western Digital (WDC)
MetricAPHWDC
P/E Ratio (TTM)32.439.28
P/S Ratio (TTM)5.576.82
P/B Ratio (MRQ)10.7510.55
Free Cash Flow Yield (TTM)2.33%2.76%