Tristel vs Intuitive Surgical: Fair Value & Quality
Both stocks run through our valuation models. Here is how Tristel (TSTL) and Intuitive Surgical (ISRG) compare, as of Aug 11, 2026.
As of Aug 11, 2026, Fair Value Calculator sees Tristel as the less overvalued of the two: Tristel trades at £3.88 versus a fair value of £3.03 (-22%), while Intuitive Surgical trades at $379 versus $150 (-60%).
Tristel
TSTL.LSE · GBP · Health Care
-22%
upside to fair value
overvalued
Price£3.88
Fair Value£3.03
Quality83/100
Intuitive Surgical
ISRG · USD · Health Care
-60%
upside to fair value
overvalued
Price$379
Fair Value$150
Quality72/100
Head-to-head numbers
Green value = the better side for that row (for valuation multiples: lower = cheaper).
TristelIntuitive Surgical
Valuation
24.2×P/E (TTM)48.3×
5.07×P/S (TTM)13.35×
7.61×P/B7.92×
21.2×EV/EBITDA35.5×
—PEG2.13×
3.6%Dividend yield—
£0.14Dividend per share—
Profitability
16%Net margin28%
20%Operating margin31%
24%Return on equity17%
14%Return on assets10%
Growth
14%Revenue growth (YoY)23%
14.3%Avg. growth/yr (3Y)17.4%
8.0%Avg. growth/yr (5Y)18.2%
Balance & size
$251MMarket cap$141B
healthyGrowth qualityhealthy
Tristel leads: 6 to 5 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.
Tristelof which business quality 81 · market factors 58Intuitive Surgicalof which business quality 71 · market factors 22
ProfitabilityMargins and returns on capital today
79
66
Quality GrowthAre margins and returns improving?
63
66
CashflowEarnings quality: real cash, not paper profit
InvestmentDisciplined investing over empire-building
84
37
Low VolatilityCalm price path (market factor)
81
39
MomentumPrice trend over the last 3–12 months (market factor)
43
21
52W MomentumDistance to the 52-week high (market factor)
59
5
Net IssuanceBuybacks instead of dilution
79
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.
Tristel
DCF Models£3.41
Earnings-Based£1.92
Dividend Discount£1.58
Multiples£2.75
Asset-Based£0.46
Growth DCF£3.10
Economic Profit£1.21
Growth Earnings£2.93
24 of 26 models see the stock below the current price.
Intuitive Surgical
DCF Models$219
Earnings-Based$160
Dividend Discount$0.40
Multiples$144
Asset-Based$33.72
Growth DCF$185
Economic Profit$105
Growth Earnings$224
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.
Tristel
Bear £2.28Fair Value £3.03Bull £3.78
£3.88 = current price (white tick)
Intuitive Surgical
Bear $110Fair Value $150Bull $239
$379 = 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.
Tristel · Health Care
Quality score83 · Top 25%
Fair value upside-22% · above median
Intuitive Surgical · Health Care
Quality score72 · Top 25%
Fair value upside-60% · below median
Bottom line
As of Aug 11, 2026, Fair Value Calculator sees Tristel as the less overvalued of the two: Tristel trades at £3.88 versus a fair value of £3.03 (-22%), while Intuitive Surgical trades at $379 versus $150 (-60%).
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A model-based valuation snapshot from 21 models. Values change with price and fundamentals; the date shown above applies.
