MKS Inc. (MKSI) Stock

MKS Inc. (MKSI) is a Technology stock trading at $354.12 (as of 2026-07-15), with a market capitalization of $23.92B and a trailing P/E of 87.9. Figures are sourced from first-party U.S. SEC EDGAR filings and market data.

MKS Inc. supplies instruments, systems, and subsystems for manufacturing, including technologies for measuring, monitoring, and controlling process parameters. It operates through Vacuum & Analysis (pressure/vacuum control, materials delivery, power solutions, and plasma/reactive gas products) and Light & Motion (laser and photonics products such as motion control, optical components, and related measurement and sensing) for customers in semiconductor and other manufacturing processes.

Understand MKS Inc.: how it makes money

MKS Inc. provides instruments, systems, and subsystems for vacuum, pressure measurement, materials delivery, process control, and power delivery in manufacturing settings, and it makes money mainly through product sales and also through services.

The profit model is product-led, with Net Revenue Products (0.91B of ~1.1B total revenue) forming the core, and the product mix showing meaningful semiconductor-related exposure (Revenue Pro Forma Semiconductor 0.55B).

Revenue by segment (latest quarter)
Products	$0.9B
Services	$0.1B

Business quality (Mixed): Product revenue dominance and clear operating signals (working capital and design wins), but cyber-event impacts and semiconductor-linked demand are key watch items.

Valuation: At 85× earnings, MKSI trades 42% above the Measuring & Control Equipment average (60×). Note: one-time items can distort reported P/E.

Bull case

Product-led revenue base: Net Revenue Products are 0.91B versus Net Revenue Services of 0.13B, indicating the core business is products.
Semiconductor and adjacent markets are substantial: Revenue Pro Forma Semiconductor is 0.55B, with additional meaningful contributions shown in Revenue Pro Forma Advanced Electronics (0.3B) and Revenue Pro Forma Specialty Industrial (0.29B).
Demand pipeline signal: Optics Design Wins are shown as 10.0, which can indicate ongoing customer engineering selection activity.

Bear case

Cyber-event revenue volatility: Ransomware Impact on Revenue is estimated at 0.16B, and Ransomware Revenue Recovery is estimated at 0.12B, implying net disruption and recovery dynamics to monitor.
Working capital sensitivity: Days Sales Outstanding DSO is 59.0 and Inventory Turns are 2.6, so changes in customer payment behavior or inventory levels could impact cash conversion.

Valuation — source: SEC EDGAR (first-party)
Price	$354.12
Market Cap	$23.92B
P/E Ratio	87.9
EV / EBITDA	31.3
Price / Book	8.51
Price / Sales	6.02
FCF Yield	3.4%
DCF Value (model)	$4.65
DCF Upside vs Price	-98.7%

Profitability & Growth — source: SEC EDGAR
Revenue (TTM)	$3.93B
Net Margin	7.5%
Revenue Growth (YoY)	9.6%
EPS Growth (YoY)	55.7%
FCF Growth (YoY)	21.2%

Financial Health — source: SEC EDGAR
Altman Z-Score	3.33 (safe)

Valuation vs Sector & Industry
Stock P/E	87.9
Sector P/E (Technology)	34.5
Industry P/E (Measuring & Control Equipment)	58.5
vs Sector	154.8%
vs Industry	50.3%

Smart-Money Activity — SEC Form 4 / 13F / Congressional disclosures
Top Institutional Holder	BlackRock, Inc. ($1.53B)
Institutional Holders Tracked	10
Congressional Trades (recent)	7

Company
Sector	Technology
Industry	Measuring & Control Equipment
CEO	John T. C. Lee
Employees	10,200
Country	US
IPO Date	1999-03-30

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

Data as of 2026-07-15.

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