MKS Instruments Inc (MKSI) Fair Value & Analysis
Technology · US · Market cap $21.9B · ISIN US55306N1046
What is MKS Instruments Inc really worth?
MKS Instruments Inc
MKSI · US
A solid business, but trading 229% above our fair value of $76.00.
Risks
For context
Fair value as of: Aug 21, 2026
From 26 valuation models · updated 15 days ago
Share price −22.2% over the past month.
What runs behind every stock
69 individual criteria per stock, every one traceable See the method →
What matters now
- The price sits above even our optimistic bull case ($147.50). The favourable scenario is already priced in.
- The model range is unusually wide ($33.52 to $147.50). The outcome hinges heavily on assumptions, so read the point estimate with caution.
- Solid but not exceptional quality (57/100) and above fair value, neither a clear bargain nor a standout compounder.
Price vs Fair Value (5 years)
White line = price, green steps = our fair value per fiscal year, dashed = 300-day average. As of Aug 21, 2026.
How to read this chart
60‑month range $58.32 – $444.80 · fair‑value band $33.52 – $147.50 · the $249.65 price screens above the $76.00 fair value. Green steps = our fair value per fiscal year (point-in-time, no hindsight). 5 fiscal years are left out: there the valuation rested on only a fraction of the usual models. Dashed = 300-day average. As of Aug 21, 2026.
Analysis
MKS Instruments Inc (MKSI) currently trades at $249.65, while our model-based Fair Value estimate is $76.00, implying the stock looks roughly 228.5% overvalued today. The Quality Score stands at 57/100 (solid quality), in the Technology sector. Bull case: the DCF Models group reads highest at a median of $101.94 per share, and 0 of the 26 models we run sit above the $249.65 price. Bear case: the Dividend Discount group reads lowest at $14.06, and 26 of the 26 models stay below the price. Evidence for this calculation is high.
Over the trailing twelve months, MKS Instruments Inc generated revenue of $4.1B at a net margin of 8.0%. Revenue grew 15.2% year over year. It earns a return on equity of 12.7%. Net debt stands at $4.0B. Fundamentals as of Aug 21, 2026
Our scenario range runs from $33.52 (bear case) to $147.50 (bull case); at $249.65, the current price sits above that range. Bear and bull are the same models run on conservative and optimistic assumptions (margins, growth, valuation multiples), so a plausible valuation range, not a price target. The last reported earnings sit well below what analysts expect (earnings in transition, for example after write-downs or an earnings dip); whether the stock is cheap or expensive hinges on the expected recovery actually arriving. Read the fair value with that caveat. The share trades about 27% below its 52-week high and 184% above its 52-week low, currently above its 200-day average. For context, the median of 10 Technology peers we cover trades at −55% fair-value upside, at −70%, MKSI screens richer than that median.
Fair Value models
This estimate rests on fiscal year 2025 figures, and about 8 months have passed since. In that time the company retained roughly $2.63 per share, which is 3.5 % of the fair value. The fair value deliberately does not add this in: the models value reported figures, not a projection.
Each model estimates fair value its own way; the Fair Value above is the evidence-weighted, family-balanced blend. Evidence (0–100) measures how completely this model’s inputs are available: well-fed models carry more weight in the blend. The spread across models is intentional, each one stresses a different value driver; dividend models, for instance, come out structurally low when payout is small. Every input is real reported data, nothing guessed.
All 26 models by family
Widest divergence: DCF Models ($101.94) versus Dividend Discount ($14.06). Highest evidence: FCF DCF (74).
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Key figures & financial health
More key figures
Figures from reported company fundamentals · as of Aug 21, 2026. TTM = trailing twelve months.
Quality Score breakdown
Of which business quality 55 · Market factors (momentum, volatility) 44
Non-valuation factor families (profitability, growth, cashflow, financial strength, momentum …), each academically grounded. Valuation itself sits in the Fair Value and is deliberately excluded here to avoid double-counting.
All values are scores from 0 to 100 (100 = best against fixed, research-based bands), not percentages. The three market factors (momentum, 52-week proximity, low volatility) are displayed but carry zero weight in the headline number: market sentiment is not a business property.
About the company
MKS Inc. provides foundational technology solutions to semiconductor manufacturing, electronics and packaging, and specialty industrial applications in the United States, China, South Korea, Japan, Taiwan, Singapore, and internationally.
Full company description
MKS Inc. provides foundational technology solutions to semiconductor manufacturing, electronics and packaging, and specialty industrial applications in the United States, China, South Korea, Japan, Taiwan, Singapore, and internationally. The company operates through Vacuum Solutions Division (VSD), Photonics Solutions Division (PSD), and Material Solutions Division (MSD) segments. Its VSD segment provides foundational technology solutions, including pressure measurement and control, flow measurement and control, gas and vapor delivery, gas composition analysis, electronic control technology, reactive gas generation and delivery, power generation and delivery, and fiber optic temperature and position sensing. The PSD segment offers range of solutions, which include lasers, photonics, optics, precision motion control, and vibration control. Its MSD segment develops, process, and manufactures technologies comprising advanced surface modification, electroless and electrolytic plating, and surface finishing for chemistry, equipment, and services markets, as well as high-technology applications. In addition, the company sells its products and services through direct sales, network of independent distributors, and sales representatives, as well as websites, including product catalogs. MKS Inc. was formerly known as MKS Instruments, Inc. and changed its name to MKS Inc. in May 2025. The company was incorporated in 1961 and is based in Andover, Massachusetts.
Company description, as reported by the company or data provider.
Revenue & earnings trend
FY2021 – FY2025 · reported fiscal years
MKS Instruments Inc reported revenue of $3.9B in FY2025 versus $3.0B in FY2021, a compound +7.4%/yr. Reported net income was $295M in FY2025, compounding −14.5%/yr from FY2021.
of which total revenue +15.4 % · buybacks/dilution −2.4 %
Annual growth per factor. These are factors, not summands: multiplied they give the EPS growth rate, added they do not quite. Start and end points are 3-year averages (details on hover).
MKSI screens 229% overvalued. Compare with Keysight Technologies, Inc →
Recent news
External third-party headlines (Yahoo Finance, Reuters and others), not an editorial selection.
- Earnings Estimates Moving Higher for MKS (MKSI): Time to Buy?
- Wall Street Analysts Think MKS (MKSI) Could Surge 49.8%: Read This Before Placing a Bet
- Zacks Market Edge Highlights: ARW, MKSI and MWH
- MKS (MKSI) Just Gave Investors Something To Think About
Peer Group
Scientific & Technical Instruments · 164 stocks
How this stock ranks against its industry: the green marker is this stock, the band is the typical 25–75% peer range, and the tick is the median.
Valuation Multiples vs Scientific & Technical Instruments median · lower = cheaper
Strength profile in five axes (Snowflake)
Five quick dimensions, each 0 to 100: VALUE (fair-value potential), FUTURE (revenue growth), PAST (return on equity), HEALTH (low debt), DIVIDEND (yield). Green = this stock, grey = typical sector peer.
VALUE 0: the price sits above our fair-value range.
Insider activity: 40/100
Values & ESG
Does this company touch areas you may want to avoid? The classification is inferred from sector and industry.
Similar stocks
10 more Scientific & Technical Instruments stocks, each showing price versus our Fair Value estimate (as of Aug 21, 2026).
| Stock | Price | Fair Value | vs Fair Value |
|---|---|---|---|
| Keysight Technologies, Inc KEYS | $316.13 | $107.22 | −66% |
| Garmin Ltd GRMN | $309.98 | $139.44 | −55% |
| Teledyne Technologies Incorporated TDY | $607.87 | $488.95 | −20% |
| Chroma ATE Inc 2360 | 2,195 TWD | 322.57 TWD | −85% |
| Hexagon AB HEXAB | kr 99.00 | kr 74.09 | −25% |
| AVIC Chengdu Aircraft Company 302132 | ¥60.00 | ¥24.39 | −59% |
| Fortive Corporation FTV | $61.54 | $33.48 | −46% |
| Trimble Inc TRMB | $56.99 | $34.12 | −40% |
| Cognex Corporation CGNX | $60.79 | $19.25 | −68% |
| Wuhan Guide Infrared Co 002414 | ¥12.97 | ¥4.50 | −65% |
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