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STOCK COMPARISON

West Pharmaceutical Services vs Intuitive Surgical: Fair Value & Quality

Both stocks run through our valuation models. Here is how West Pharmaceutical Services (WST) and Intuitive Surgical (ISRG) compare, as of Aug 8, 2026.

As of Aug 8, 2026, Fair Value Calculator sees West Pharmaceutical Services as the less overvalued of the two: West Pharmaceutical Services trades at $349 versus a fair value of $144 (-59%), while Intuitive Surgical trades at $374 versus $150 (-60%).
West Pharmaceutical Services
WST · USD · Health Care
-59%
upside to fair value
overvalued
Price$349
Fair Value$144
Quality73/100
Intuitive Surgical
ISRG · USD · Health Care
-60%
upside to fair value
overvalued
Price$374
Fair Value$150
Quality56/100

Head-to-head numbers

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

West Pharmaceutical ServicesIntuitive Surgical
Valuation
47.4×P/E (TTM)48.3×
7.76×P/S (TTM)13.35×
7.87×P/B7.92×
28.1×EV/EBITDA35.5×
3.40×PEG2.13×
0.2%Dividend yield
$0.86Dividend per share
Profitability
17%Net margin28%
22%Operating margin31%
19%Return on equity17%
11%Return on assets10%
Growth
21%Revenue growth (YoY)23%
2.1%Avg. growth/yr (3Y)17.4%
7.4%Avg. growth/yr (5Y)18.2%
Balance & size
0.06×Debt / equity
$25BMarket cap$141B
healthyGrowth qualityhealthy

Even match: 6 to 6 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.

West Pharmaceutical Servicesof which business quality 70 · market factors 76 Intuitive Surgicalof which business quality 71 · market factors 21
ProfitabilityMargins and returns on capital today
59
66
Quality GrowthAre margins and returns improving?
34
66
CashflowEarnings quality: real cash, not paper profit
66
79
Fin. StrengthBalance sheet, leverage, solvency risk
91
82
InvestmentDisciplined investing over empire-building
67
37
Low VolatilityCalm price path (market factor)
54
39
MomentumPrice trend over the last 3–12 months (market factor)
85
19
52W MomentumDistance to the 52-week high (market factor)
86
4
Net IssuanceBuybacks instead of dilution
95
80

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.

West Pharmaceutical Services

DCF Models$134
Earnings-Based$67.55
Multiples$129
Asset-Based$30.12
Growth DCF$126
Economic Profit$80.30
Growth Earnings$126

24 of 24 models see the stock below the current price.

Intuitive Surgical

DCF Models$208
Earnings-Based$160
Dividend Discount$0.40
Multiples$140
Asset-Based$33.72
Growth DCF$176
Economic Profit$105
Growth Earnings$215

25 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.

West Pharmaceutical Services
Bear $92.87Fair Value $144Bull $191
$349 = current price (white tick)
Intuitive Surgical
Bear $110Fair Value $150Bull $239
$374 = 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.

West Pharmaceutical Services · Health Care

Quality score73 · Top 25%
Fair value upside-59% · below median

Intuitive Surgical · Health Care

Quality score56 · above median
Fair value upside-60% · below median

Bottom line

As of Aug 8, 2026, Fair Value Calculator sees West Pharmaceutical Services as the less overvalued of the two: West Pharmaceutical Services trades at $349 versus a fair value of $144 (-59%), while Intuitive Surgical trades at $374 versus $150 (-60%).

West Pharmaceutical Services has the higher quality score (73/100).

See the full analysis →

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