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STOCK COMPARISON

MKS Instruments vs Keysight Technologies: Fair Value & Quality

Both stocks run through our valuation models. Here is how MKS Instruments (MKSI) and Keysight Technologies (KEYS) compare, as of Aug 8, 2026.

As of Aug 8, 2026, Fair Value Calculator sees MKS Instruments as the less overvalued of the two: MKS Instruments trades at $291 versus a fair value of $77.46 (-73%), while Keysight Technologies trades at $337 versus $84.16 (-75%).
MKS Instruments
MKSI · USD · Information Technology
-73%
upside to fair value
overvalued
Price$291
Fair Value$77.46
Quality54/100
Keysight Technologies
KEYS · USD · Information Technology
-75%
upside to fair value
overvalued
Price$337
Fair Value$84.16
Quality71/100

Head-to-head numbers

Green value = the better side for that row (for valuation multiples: lower = cheaper).

MKS InstrumentsKeysight Technologies
Valuation
67.9×P/E (TTM)50.8×
5.38×P/S (TTM)8.87×
8.07×P/B9.19×
27.0×EV/EBITDA38.2×
1.32×PEG1.13×
0.3%Dividend yield—
$0.91Dividend per share—
Profitability
8%Net margin17%
16%Operating margin19%
13%Return on equity18%
4%Return on assets6%
Growth
15%Revenue growth (YoY)32%
3.5%Avg. growth/yr (3Y)-0.3%
11.0%Avg. growth/yr (5Y)5.0%
Balance & size
1.53×Debt / equity0.43×
$22BMarket cap$54B
healthyGrowth qualityhealthy

Keysight Technologies leads: 5 to 8 metric wins.

Dash = not meaningfully computable, for example with negative equity.

Quality in detail

The quality score, broken down into the same factor families as on the stock page, 0 to 100 per family.

MKS Instrumentsof which business quality 55 · market factors 53 Keysight Technologiesof which business quality 71 · market factors 73
ProfitabilityMargins and returns on capital today
36
52
Quality GrowthAre margins and returns improving?
40
47
CashflowEarnings quality: real cash, not paper profit
73
89
Fin. StrengthBalance sheet, leverage, solvency risk
39
76
InvestmentDisciplined investing over empire-building
97
59
Low VolatilityCalm price path (market factor)
0
42
MomentumPrice trend over the last 3–12 months (market factor)
73
82
52W MomentumDistance to the 52-week high (market factor)
78
92
Net IssuanceBuybacks instead of dilution
59
96

What the models say

The median fair value (base case) per model family, each in the currency of its trading venue. Green = above the current price, red = below.

MKS Instruments

DCF Models$103
Earnings-Based$50.71
Dividend Discount$15.37
Multiples$80.80
Asset-Based$26.97
Growth DCF$99.61
Economic Profit$36.71
Growth Earnings$79.56

26 of 26 models see the stock below the current price.

Keysight Technologies

DCF Models$95.80
Earnings-Based$36.69
Dividend Discount$5.75
Multiples$81.40
Asset-Based$23.04
Growth DCF$104
Economic Profit$46.70
Growth Earnings$86.39

26 of 26 models see the stock below the current price.

Scenario ranges

From our cautious bear case to the optimistic bull case. The white tick is the current price: left of fair value means room to run.

MKS Instruments
Bear $33.82Fair Value $77.46Bull $109
$291 = current price (white tick)
Keysight Technologies
Bear $63.12Fair Value $84.16Bull $105
$337 = current price (white tick)

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Ranked within their sector

Where each stock sits within its sector peer group. Band = middle 50% of peers, tick = median, dot = this stock.

MKS Instruments · Information Technology

Quality score54 · above median
Fair value upside-73% · bottom 25%

Keysight Technologies · Information Technology

Quality score71 · Top 25%
Fair value upside-75% · bottom 25%

Bottom line

As of Aug 8, 2026, Fair Value Calculator sees MKS Instruments as the less overvalued of the two: MKS Instruments trades at $291 versus a fair value of $77.46 (-73%), while Keysight Technologies trades at $337 versus $84.16 (-75%).

Keysight Technologies has the higher quality score (71/100).

See the full analysis →
MKS Instruments · Keysight Technologies

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A model-based valuation snapshot from 21 models. Values change with price and fundamentals; the date shown above applies.