Quick verdict: AMKR vs MKSI in 2026

Overall, MKS Inc. (MKSI) appears to have a stronger edge in this 2026 comparison, demonstrating superior growth and profitability metrics favored by analysts. While Amkor Technology (AMKR) offers a more attractive valuation for value-conscious investors, MKSI shows stronger momentum and analyst conviction. For those prioritizing growth and analyst sentiment, MKSI might be the preferred choice, whereas AMKR presents a relatively cheaper entry point into the sector. Not investment advice.

AMKR vs MKSI: key metrics side by side

Full side-by-side comparison of AMKR and MKSI across valuation, profitability, growth and analyst sentiment. Data updated 2026-05-11.

AMKR vs MKSI valuation comparison

Comparing the AMKR vs MKSI valuation provides insights into how the market prices these technology companies as of 2026-05-11. Amkor Technology (AMKR) appears more attractively valued on traditional metrics with a Price-to-Earnings (P/E) ratio of 43.49x, significantly lower than MKS Inc.’s (MKSI) P/E of 64.56x. Similarly, AMKR’s Price-to-Book (P/B) ratio stands at 4.18x, which is considerably lower than MKSI’s 7.51x. These figures suggest that AMKR is trading at a cheaper multiple relative to its earnings and book value compared to MKSI, potentially offering a more compelling entry for value investors looking for a less expensive option in 2026.

However, a deeper look into the discounted cash flow (DCF) models reveals a different perspective on their intrinsic values. Both stocks show substantial overvaluation according to the provided DCF analyses, with AMKR having a DCF upside of -83.3% and MKSI at -83.4%. While AMKR’s DCF suggests a slightly less severe overvaluation, the difference is negligible. This indicates that, by this intrinsic valuation method, both companies are currently priced well above their calculated fair value, suggesting that the market is factoring in significant future growth or competitive advantages not fully captured by current cash flows. Therefore, while AMKR presents a better relative value based on P/E and P/B, both stocks carry a high premium according to DCF analysis.

AMKR vs MKSI growth comparison

When evaluating the AMKR vs MKSI growth comparison, MKS Inc. (MKSI) demonstrates stronger top-line momentum. MKSI reported a year-over-year revenue growth of +9.6%, outpacing Amkor Technology’s (AMKR) revenue growth of +6.2%. This indicates that MKSI is currently expanding its market presence and revenue base at a faster rate, which could be appealing to growth-oriented investors looking for companies with stronger upward trajectories in 2026. This differential in revenue growth suggests that MKSI has stronger momentum in its operations, potentially benefiting from higher demand in its specific market segments or more effective business development strategies as of May 2026.

Beyond just revenue, the quality of this growth can be assessed through profitability margins, where MKSI also leads. MKSI boasts a net margin of 8.03% and an EBITDA margin of 22.69%. In contrast, AMKR’s net margin is 6.17% and its EBITDA margin is 14.88%. MKSI’s higher margins indicate that it is not only growing faster but also converting a larger portion of its revenue into actual profit more efficiently than AMKR. This suggests better operational leverage and cost management, which are critical factors for sustainable growth. While specific forward estimates for future growth were not provided, MKSI’s current performance in both revenue growth and profitability margins positions it with a more robust growth profile compared to AMKR.

AMKR vs MKSI profitability

In terms of AMKR vs MKSI profitability, MKS Inc. (MKSI) exhibits superior performance across key metrics compared to Amkor Technology (AMKR). MKSI’s net margin stands at an impressive 8.03%, indicating that it converts a larger percentage of its revenue into net income after all expenses. This is notably higher than AMKR’s net margin of 6.17%. A higher net margin typically signifies greater operational efficiency and stronger pricing power within its market. Furthermore, MKSI’s EBITDA margin of 22.69% also significantly outperforms AMKR’s 14.88%, reinforcing the notion of MKSI’s stronger operational profitability before accounting for non-operating expenses like depreciation, amortization, interest, and taxes.

While the Return on Equity (ROE) for both companies is currently reported as N/A%, limiting a direct comparison on this specific equity-based profitability metric, the Free Cash Flow (FCF) yield provides further insight into their ability to generate cash. MKSI boasts a higher FCF yield of 1.9%, indicating that it generates more free cash flow relative to its market capitalization than AMKR, which has an FCF yield of 0.88%. This stronger FCF generation suggests that MKSI has more capital available for reinvestment, debt reduction, or potential shareholder returns, highlighting its robust cash-generating capabilities. Overall, MKSI clearly generates more cash and is more profitable on a per-revenue basis.

Analyst ratings: AMKR vs MKSI

The analyst ratings for AMKR vs MKSI reveal a clear preference for MKS Inc. (MKSI) among professional financial analysts as of 2026-05-11. Out of 29 analysts covering MKSI, a substantial 82.8% recommend a “Buy” rating, leading to a strong “Buy” consensus. The average analyst price target for MKSI is $294.25, which, while below the current price of $313.21, implies a more moderate potential downside of -6.1% compared to AMKR. This high percentage of buy ratings and a relatively tighter target range reflect strong confidence in MKSI’s future performance and business outlook, suggesting it is a favored pick by the analyst community.

Conversely, Amkor Technology (AMKR) receives a more cautious outlook from analysts. With 14 analysts covering AMKR, only 42.9% have a “Buy” rating, resulting in an overall “Hold” consensus. The average analyst price target for AMKR is $66.75, significantly below its current price of $76.61, indicating a larger potential downside of -12.9%. This lower percentage of buy ratings and a more substantial negative price target suggest that analysts perceive higher risks or more limited upside potential for AMKR compared to MKSI, positioning MKSI as the clear analyst favorite in this stock comparison for 2026.

Should I buy AMKR or MKSI stock in 2026?

Deciding whether should I buy AMKR or MKSI stock in 2026 depends heavily on an investor’s specific objectives, considering the distinct profiles revealed in our AMKR vs MKSI stock comparison 2026. For growth-oriented investors prioritizing strong top-line expansion and operational efficiency, MKS Inc. (MKSI) presents a more compelling case. MKSI boasts a higher revenue growth rate of 9.6% year-over-year, coupled with superior net margins (8.03% vs 6.17%) and EBITDA margins (22.69% vs 14.88%), indicating more profitable growth. Furthermore, analyst sentiment strongly favors MKSI, with a high percentage of “Buy” ratings and a “Buy” consensus, suggesting professional confidence in its future performance and less projected downside from its current price.

On the other hand, investors focusing on value metrics might find Amkor Technology (AMKR) more appealing. AMKR trades at a lower Price-to-Earnings (P/E) ratio of 43.49x and a lower Price-to-Book (P/B) ratio of 4.18x compared to MKSI’s 64.56x P/E and 7.51x P/B. This suggests AMKR is relatively cheaper based on its current earnings and assets. While both stocks are significantly overvalued by their respective Discounted Cash Flow (DCF) models, AMKR’s multiples offer a more attractive entry point for those seeking a less expensive fundamental valuation within the technology sector, despite its slower growth and less favorable analyst outlook.

For income-focused investors, neither AMKR nor MKSI currently stands out as a strong candidate. Both companies have a dividend yield of 0.0%, indicating that they do not distribute earnings to shareholders through regular dividends. Investors looking for passive income streams would need to explore other options. Therefore, the choice between AMKR vs MKSI fundamentals and valuation ultimately comes down to a trade-off between growth and value, with MKSI offering robust growth and profitability alongside strong analyst backing, and AMKR providing a comparatively cheaper valuation for those willing to accept slower growth. This is not investment advice, and investors should conduct their own thorough research.

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FAQ: AMKR vs MKSI