Amphenol Corporation (APH) Stock

Amphenol Corporation (APH) is a Technology stock trading at $162.19 (as of 2026-07-09), with a market capitalization of $199.53B and a trailing P/E of 44.7. Figures are sourced from first-party U.S. SEC EDGAR filings and market data.

Amphenol designs, manufactures, and markets electrical, electronic, and fiber optic connectors and related interconnect products through segments including Harsh Environment Solutions, Communications Solutions, and Interconnect and Sensor Systems. Its products serve original equipment manufacturers, electronic manufacturing services companies, and distributor channels.

Understand Amphenol Corporation: how it makes money

Amphenol designs, manufactures, and markets electrical, electronic, and fiber optic connectors and related systems, it makes money by selling these products across three reporting segments, Harsh Environment Solutions, Communications Solutions, and Interconnect and Sensor Systems.

Profit depends on converting connector demand into revenue (captured by Book-to-Bill Ratio) while keeping working capital under control (captured by Inventory Days and DSO).

Revenue by segment (latest quarter)
Harsh	$1.7B
Comm	$4.5B
Interconnect	$1.4B

Business quality (Strong): Clear three-segment disclosure linked to an order and working-capital operating dashboard (Book-to-Bill Ratio, Inventory Days, and DSO), which helps investors track demand conversion and cash tied up in operations.

Valuation: At 44× earnings, APH trades 14% below the Semiconductors average (51×). Note: one-time items can distort reported P/E.

Bull case

Demand to sales conversion signal: Book-to-Bill Ratio is 1.24, indicating orders exceed sales over the period.
Communications Solutions is a major revenue engine: Communications Solutions revenue is 4.5B, the largest of the three segments.
Trackable working-capital metrics: Investors can monitor Inventory Days (with acquisitions excluded) and DSO (with acquisitions excluded) as operational indicators.

Bear case

Working capital duration: Inventory Days is 80.0 and DSO is 69.0 (both with acquisitions excluded), which can indicate cash tied up in inventory and receivables.
Order visibility can still shift: Even with Book-to-Bill Ratio above 1, demand conversion can change if customers reduce orders, which would pressure future revenue.
End-market mix sensitivity: The company reports market share of sales across multiple end markets, and if any of those end markets weaken, segment demand could be affected.

Valuation — source: SEC EDGAR (first-party)
Price	$162.19
Market Cap	$199.53B
P/E Ratio	44.7
EV / EBITDA	24.9
Price / Book	14.17
Price / Sales	7.70
FCF Yield	2.3%
DCF Value (model)	$151.04
DCF Upside vs Price	-6.9%

Profitability & Growth — source: SEC EDGAR
Revenue (TTM)	$23.09B
Net Margin	18.5%
Revenue Growth (YoY)	58.4%
EPS Growth (YoY)	24.6%
FCF Growth (YoY)	44.0%

Financial Health — source: SEC EDGAR
Altman Z-Score	7.26 (safe)

Valuation vs Sector & Industry
Stock P/E	44.7
Sector P/E (Technology)	33.6
Industry P/E (Electronic Equipment)	44.3
vs Sector	32.9%
vs Industry	0.8%

Smart-Money Activity — SEC Form 4 / 13F / Congressional disclosures
Top Institutional Holder	VANGUARD GROUP INC ($17.10B)
Institutional Holders Tracked	10
Congressional Trades (recent)	10

Company
Sector	Technology
Industry	Electronic Equipment
CEO	Richard Adam Norwitt
Employees	125,000
Country	US
IPO Date	1991-11-08

Related Companies (Business model: Industrials / Capital Goods (Heavy Machinery + Diversified Industrials); 8 closest by market cap; US-domiciled)

Data as of 2026-07-09.

Figures sourced from U.S. Securities and Exchange Commission (SEC EDGAR) filings and market data. Not personalized investment advice.