AEIS vs MKSI
AEIS: Advanced Energy Industries provides critical power conversion, measurement, and control technology that powers complex processes in semiconductor and industrial markets. MKSI: MKS Instruments supplies precision vacuum instrumentation, pressure control, and real-time process monitoring systems critical to semiconductor fabrication and advanced manufacturing.
Side-by-side fundamentals
| Metric | AEIS | MKSI | Edge |
|---|---|---|---|
| Price as of 2026-07-31 close | $289.52 | $297.45 | |
| Market cap as of 2026-08-04 | $11.0B | $20.1B | |
| P/E as of 2026-08-04 | 57.80 | 62.37 | AEIS lower |
| PEG as of 2026-08-04 | 1.90 | 2.06 | AEIS lower |
| Net margin as of 2026-08-04 | +10.0% | +8.0% | AEIS higher |
| Gross margin as of 2026-08-04 | +38.2% | +46.7% | MKSI higher |
| Operating margin as of 2026-08-04 | +10.8% | +13.6% | MKSI higher |
| ROE as of 2026-08-04 | +14.3% | +12.2% | AEIS higher |
| ROA as of 2026-08-04 | +7.6% | +3.7% | AEIS higher |
| Debt / equity as of 2026-08-04 | 0.41 | 1.44 | AEIS lower |
| Revenue growth (YoY) as of 2026-08-04 | +22.2% | +11.4% | AEIS higher |
| Revenue CAGR (3y) SEC XBRL | -0.8% | +3.5% | MKSI higher |
| Dividend yield as of 2026-08-04 | +0.1% | +0.3% | MKSI higher |
| Dividend streak (yrs) SEC XBRL | 5 | 5 | Tie |
| Beta as of 2026-08-04 | 1.32 | 2.55 | |
| 1-year return as of 2026-07-31 close | +108.4% | +212.5% | MKSI higher |
Fundamentals: market data, as of 2026-08-04. Filings: SEC EDGAR. Prices are delayed daily-close data.
Last updated 2026-07-31.
Informational only — NOT financial advice. All figures are delayed daily-close data from SEC EDGAR & market data, shown with their as-of date; "Edge" cells are a pure numeric comparison, not a recommendation.