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STOCK COMPARISON

Intuitive Surgical vs West Pharmaceutical Services: Fair Value & Quality

Both stocks run through our valuation models. Here is how Intuitive Surgical (ISRG) and West Pharmaceutical Services (WST) compare, as of Sep 5, 2026.

As of Sep 5, 2026, Fair Value Calculator sees West Pharmaceutical Services as the less overvalued of the two: Intuitive Surgical trades at $370 versus a fair value of $150 (-59%), while West Pharmaceutical Services trades at $343 versus $142 (-59%).
Intuitive Surgical
ISRG · USD · Health Care
-59%
upside to fair value
overvalued
Price$370
Fair Value$150
Quality72/100
West Pharmaceutical Services
WST · USD · Health Care
-59%
upside to fair value
overvalued
Price$343
Fair Value$142
Quality71/100
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Head-to-head numbers

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

Intuitive SurgicalWest Pharmaceutical Services
Valuation
48.3×P/E (TTM)47.4×
13.35×P/S (TTM)7.76×
7.92×P/B7.87×
35.5×EV/EBITDA28.1×
2.13×PEG3.40×
−59.4%Fair value upside−58.7%
—Dividend yield0.3%
—Dividend per share$0.86
Profitability
31%Operating margin22%
1.22×EBIT margin trend (5Y)1.03×
17%Return on equity19%
10%Return on assets11%
Growth
23%Revenue growth (YoY)21%
17.4%Avg. growth/yr (3Y)2.1%
18.2%Avg. growth/yr (5Y)7.4%
+15.4%Value creation/yr+8.6%
Balance & size
99.2×Interest coverage (EBIT/interest)1,029.0×
—Debt / equity0.06×
$141BMarket cap$25B
healthyGrowth qualityhealthy

West Pharmaceutical Services leads: 6 to 7 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.

Intuitive Surgicalof which business quality 71 · market factors 22 West Pharmaceutical Servicesof which business quality 70 · market factors 70
ProfitabilityMargins and returns on capital today
66
59
Quality GrowthAre margins and returns improving?
66
34
CashflowEarnings quality: real cash, not paper profit
79
66
Fin. StrengthBalance sheet, leverage, solvency risk
82
91
InvestmentDisciplined investing over empire-building
37
67
Low VolatilityCalm price path (market factor)
39
54
MomentumPrice trend over the last 3–12 months (market factor)
19
75
52W MomentumDistance to the 52-week high (market factor)
8
80
Net IssuanceBuybacks instead of dilution
80
95

What the models say

How far the median fair value (base case) per model family sits from the current price, in percent. The amount in the currency of the trading venue is shown underneath.

above the price, more than 15% above close to the price, 85% to 115% of the price below the price, more than 15% below

Model familyIntuitive SurgicalPrice $370West Pharmaceutical ServicesPrice $343
DCF Models-41%below the price$219-59%below the price$140
Earnings-Based-57%below the price$160-80%below the price$67.55
Dividend Discount-100%below the price$0.40n/a
Multiples-61%below the price$144-60%below the price$138
Asset-Based-91%below the price$33.72-91%below the price$30.12
Growth DCF-50%below the price$185-63%below the price$128
Economic Profit-72%below the price$105-77%below the price$80.30
Growth Earnings-39%below the price$224-60%below the price$137
Minimum-100%below the price$0.40-91%below the price$30.12
Maximum-39%below the price$224-59%below the price$140
Median-59%below the price$152-63%below the price$128
Geometric mean-83%below the price$64.30-73%below the price$91.86

Minimum, maximum, median and geometric mean refer to the family values in this table. Geometric because deviations are ratios: half the price and twice the price average to 100%, not 125%.

Intuitive Surgical: 25 of 26 models see the stock below the current price.

West Pharmaceutical Services: 24 of 24 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.

Intuitive Surgical
Bear $108Fair Value $150Bull $225
$370 = current price (white tick)
West Pharmaceutical Services
Bear $91.55Fair Value $142Bull $191
$343 = 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.

Intuitive Surgical · Health Care

Quality score72 · Top 25%
Fair value upside-59% · below median

West Pharmaceutical Services · Health Care

Quality score71 · Top 25%
Fair value upside-59% · below median

Bottom line

As of Sep 5, 2026, Fair Value Calculator sees West Pharmaceutical Services as the less overvalued of the two: Intuitive Surgical trades at $370 versus a fair value of $150 (-59%), while West Pharmaceutical Services trades at $343 versus $142 (-59%).

Intuitive Surgical has the higher quality score (72/100).

See the full analysis →
Intuitive Surgical · West Pharmaceutical Services

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A model-based valuation snapshot from 26 models. Values change with price and fundamentals; the date shown above applies.