MKSI
MKS Inc.
MKSI's fundamentals are strong and it looks cheap: trading at 26x earnings, in line with its usual 29x, but only 12x next year's expected earnings. Analysts disagree widely on these estimates.
MKSI Fundamentals
| Metric | Status |
|---|---|
| Strong | |
| Strong | |
| Healthy | |
| Stable |
MKSI's revenue, profitability and cash flow are currently healthy, and its balance sheet is stable.
MKSI PE Valuation
| Level | PE | Price | Vs current |
|---|---|---|---|
| Forward | 12x | $222 | — |
| Cheap | 15x | $125 | -44% |
| Current | 26x | $222 | — |
| Fair | 29x | $245 | +11% |
| Expensive | 50x | $422 | +90% |
Historical ranges are pointers, not guarantees.
MKSI's PE is in its fair range at 26x. If earnings grow as analysts expect, today's price would be 12x next year's earnings, in its cheap range.
MKSI Forward outlook
| Metric | Outlook |
|---|---|
| Strongly improving | |
| Strong growth | |
| Strong growth | |
| Strongly improving | |
| Limited | |
| Low |
Analysts expect strong earnings and revenue growth for MKSI, with profitability improving. However, they disagree widely on these estimates.
MKSI Earnings Per Share
| Quarter | TTM EPS | YoY |
|---|---|---|
| Forward | $19.24 | +128% |
| Q3 2026 | $8.43 | +104% |
| Q2 2026 | $6.27 | +59% |
| Q1 2026 | $4.78 | +42% |
| Q4 2025 | $4.37 | +56% |
| Q3 2025 | $4.13 | +798% |
| Q2 2025 | $3.95 | +3192% |
| Q1 2025 | $3.36 | +$30.04 |
| Q4 2024 | $2.81 | +$30.35 |
MKSI's earnings per share have climbed steadily: $8.43 over the past year, up 104% from the year before, and higher year over year for 10 quarters in a row.
MKSI Quarterly Revenue
| Quarter | Revenue | YoY |
|---|---|---|
| Q3 2026 | $1.4B | +43% |
| Q2 2026 | $1.2B | +28% |
| Q1 2026 | $1.1B | +15% |
| Q4 2025 | $1B | +11% |
| Q3 2025 | $988M | +10% |
| Q2 2025 | $973M | +9.7% |
| Q1 2025 | $936M | +7.8% |
| Q4 2024 | $934M | +4.7% |
MKSI's revenue has grown year over year for eight quarters in a row: $1.4B last quarter, up 43% from the same quarter a year ago.
| Quarter | Margin | YoY |
|---|---|---|
| Q3 2026 | 23% | +9.1 points |
| Q2 2026 | 20% | +6.2 points |
| Q1 2026 | 14% | +2 points |
| Q4 2025 | 14% | -0.7 points |
| Q3 2025 | 14% | -0.3 points |
| Q2 2025 | 14% | -0.5 points |
| Q1 2025 | 12% | -0.4 points |
| Q4 2024 | 15% | +12 points |
MKSI's operating margin was 23% last quarter, up 9.1 points from the same quarter a year ago.
MKSI Free Cash Flow
| Quarter | Free cash flow | YoY |
|---|---|---|
| Q3 2026 | $243M | +66% |
| Q2 2026 | $189M | +39% |
| Q1 2026 | $28M | -77% |
| Q4 2025 | $92M | -26% |
| Q3 2025 | $146M | +3.5% |
| Q2 2025 | $136M | +43% |
| Q1 2025 | $123M | +151% |
| Q4 2024 | $125M | -15% |
MKSI generated $552M in free cash flow over the past year, up 4.2% from the year before.
MKSI Total Shares
| Period | Change % | Net change |
|---|---|---|
| Quarterly | -0.3% | -200K shares |
| 1 year | +7.2% | +4.9M shares |
| 3 years | +8% | +5.4M shares |
| 5 years | +30% | +16.8M shares |
| Available history | +32% | +17.4M shares |
MKSI has 73M diluted shares, up 7.2% from a year ago.
| Quarter | Spent |
|---|---|
| Q3 2026 | — |
| Q2 2026 | — |
| Q1 2026 | — |
| Q4 2025 | — |
| Q3 2025 | — |
| Q2 2025 | — |
| Q1 2025 | $45M |
MKSI hasn't bought back shares in the past year.
MKSI Net Leverage
| Quarter | Net Leverage | Status |
|---|---|---|
| Q3 2026 | 2.7x | Moderate |
| Q2 2026 | 3.4x | Elevated |
| Q1 2026 | 4.0x | Elevated |
| Q4 2025 | 4.4x | High |
| Q3 2025 | 4.5x | High |
| Q2 2025 | 4.6x | High |
| Q1 2025 | 4.8x | High |
| Q4 2024 | 4.9x | High |
MKSI's net debt is about 2.7 years of its operating earnings (EBITDA), down from 4.5 years a year ago.
MKSI Weekly Momentum
| Metric | Value | Status |
|---|---|---|
| RSI | 42.3 | Neutral |
| Stochastic | 17.0 | Oversold |
MKSI's weekly RSI is 42 (neutral) and its Stochastic is 17 (oversold).
MKSI PE vs Technology Sector
| Metric | MKSI | Sector median | Relative |
|---|---|---|---|
| PE | 26x | 28x | 5.7% below |
| PE % | 41 | 35 | 6 pts above |
MKSI is trading at 26x earnings, in line with the Technology sector's median of 28x.
MKSI Weekly Moving Averages
| Moving average | MA price | Relative |
|---|---|---|
| 8 week MA | $229.0 | 3.3% below |
| 20 week MA | $272.4 | 19% below |
| 50 week MA | $260.8 | 15% below |
| 100 week MA | $182.8 | 21% above |
| 200 week MA | $143.8 | 54% above |
MKSI has pulled back, but its long-term trend is still up: it's below its 8-, 20- and 50-week averages, but 54% above its 200-week average.
MKSI Yearly ROI
| Year | Start price | End price | ROI |
|---|---|---|---|
| 2020 | $110.4 | $149.9 | +36% |
| 2021 | $149.9 | $169.2 | +13% |
| 2022 | $169.2 | $83.7 | -51% |
| 2023 | $83.7 | $102.9 | +23% |
| 2024 | $102.9 | $106.2 | +3.2% |
| 2025 | $106.2 | $164.2 | +55% |
| 2026 YTD | $164.2 | $221.5 | +35% |
MKSI has finished higher in five of the last six years. It's up 35% so far in 2026.