4 models fit MKS Inc. Common Stock and they disagree: 0 of 4 land within 15% of the average.
Two or more of our models back this value.
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Valued as a mature, profitable company: Discounted cash flow, P/E comparison, EV/EBITDA comparison, and Graham number.
ACCE opinionMKS Inc. Common Stock (MKSI)
Fair value (4 models)
$145
ACCE price target
$292
Rating
Overvalued
Horizon
12 months
Fair value published on 18 Oct 2026, 17:04 CEST; previously $88.21 since 15 Oct 2026, 00:00 CEST.
ACCE price target published on 26 Sept 2026, 00:00 CEST.
Rating published on 18 Oct 2026, 17:04 CEST.
Price used: $197 at the close on 23 Oct 2026, 22:00 CEST.
Models: Discounted cash flow, P/E comparison, EV/EBITDA comparison, and Graham number.
Fair value: the average of the applicable valuation models (discounted cash flow, multiples, residual income, dividend discount, shareholder yield), each run on the latest financial statements and the market price shown. Opinion columns (fair value, target, rating) are shown apart from the data. Full methodology: acceinvestments.com/data/how-we-value-stocks
Conflicts of interest: The author holds no personal position in this security. General statement
Produced by ACCE Investments (acceinvestments.com)
Data
Price vs fair value
35.8% above
-26.4% to fair value
ACCE score
63
out of 100
Analysts
86% buy
14 covering
P/E
34.3x
forward 10.4x
1-year return
+39.7%
Dividend yield
0.43%
MKS Inc. Common Stock in four questions
Plain answers, details below
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Overview
ACCE thesis
MKS Inc. makes the vacuum pumps, RF power generators, lasers, and process control instruments that semiconductor and advanced-manufacturing tool makers bolt into their equipment, so its revenue tracks wafer-fab capital spending more than end-consumer demand. The moat is in qualification: once an MKS subsystem is designed into a customer's tool platform, switching costs are high because requalification takes many months, which supports a 47% gross margin and a 20.6% operating margin. Revenue grew 28.3% over the last year, and the near-term driver is the cycle turning up in fab spending as chipmakers ramp advanced logic and memory capacity. The stock trades at 39.4x trailing earnings but only 14.1x forward, a gap that signals the market expects earnings to recover sharply from a depressed base, which is the central question to test. A 15.8% ROE and a 65/100 score put it on the list for deeper work, with the key diligence items being how durable the current order momentum is and how much of the forward earnings estimate depends on a single semiconductor upcycle.
⚠ Investor warnings · 3 flagsAI-assisted·How I use AI
high
Valuation disconnect and score decline
Current P/E 42.1 vs forward 15.1 signals market pricing in sharp earnings deceleration. ACCE score fell 4 points in 90 days (69→65); valuation component V:43 is weak.
high
Insider selling pressure
Last 10 disclosures show $14.79M in sales vs $0 in buys. Insiders are net sellers despite stock near fair value, a bearish signal on near-term conviction.
moderate
Elevated leverage and short interest
Debt/Equity 1.40 is material. Short interest 10.2% is meaningful. Combined with 5-year revenue CAGR of only 3.5%, growth narrative may not justify current leverage.
AI research notes
AI-assisted·How I use AIWritten Oct 11, 2026 · figures from 2026-06-30 · prices to Oct 23, 2026
Why it could do well
Revenue surged 28.3% year over year, and earnings beat expectations by 12.2%, signaling strong demand and execution.
ROE of 15.8% and free cash flow of 480M demonstrate the company generates real returns and cash despite integration headwinds.
Why it could disappoint
Five-year average revenue growth of 3.5% per year suggests the current 28.3% surge is cyclical, not structural.
Debt to equity of 1.40 and ROIC of only 3.3% mean the balance sheet is stretched and capital returns are constrained.
Each chip shows the exact figure and where it comes from. A claim without a source is not published.
Next results
Nov 4, 2026
We update the fair value about 2 days after the results, once the new figures are filed.Add to calendarGoogle
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Valuation
INVESTOR
Where MKSI's valuation models land
Price
$196.55
Model fair value
$145
Model range
$60.88 to $359
Fair value $145
Price $197
The price sits inside the model range.
Model
Fair value
Upside
Discounted cash flow
EV/EBITDA comparison
Graham number
P/E comparison
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Quality
INVESTOR
Quality and conviction INVESTOR FEATURE
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+Conviction breakdown and growth / value / quality / momentum scores