MKSI vs. MPWR: MKS vs. Monolithic Power Systems Stock Comparison

November 11, 2026

How do MKS (MKSI) and Monolithic Power Systems (MPWR) stack up? This page sets them side by side across company profile, performance and risk, profitability, growth, financial strength, dividends, and valuation, with selected fundamentals also measured against each stock's industry-group peers.

Company Profile

MKS (MKSI) and Monolithic Power Systems (MPWR) both belong to the Semiconductors & Semiconductor Equipment industry, though MKSI is classified under Semiconductor Materials & Equipment while MPWR falls under Semiconductors.

Company profile comparison for MKS (MKSI) and Monolithic Power Systems (MPWR)
Profile Item	MKSI	MPWR
Name	MKS Inc.	Monolithic Power Systems Inc.
Country/Region	United States	United States
GICS Sector	Information Technology	Information Technology
GICS Industry Group	Semiconductors & Semiconductor Equipment	Semiconductors & Semiconductor Equipment
GICS Industry	Semiconductors & Semiconductor Equipment	Semiconductors & Semiconductor Equipment
GICS Sub-Industry	Semiconductor Materials & Equipment	Semiconductors
Market Capitalization	13.00 billion USD	58.06 billion USD
Currency	USD	USD
Exchange	Nasdaq	Nasdaq
Listing Date	March 30, 1999	November 19, 2004
Security Type	Common Stock	Common Stock

Price Performance

Cumulative Growth

MKSI

MPWR

GSPC

MKS (MKSI) vs. Monolithic Power Systems (MPWR), with S&P 500 (GSPC) for reference: Growth of a $10,000 investment over the past five years. Adjusted for dividends and splits.

Trailing Returns

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Trailing total returns for MKS (MKSI) and Monolithic Power Systems (MPWR). Returns over one year are annualized.

Calendar-Year Returns

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Calendar-year total returns for MKS (MKSI) and Monolithic Power Systems (MPWR). Each bar is that year's total return, measured year-end to year-end.

Performance Metrics

Price performance metrics for MKS (MKSI) and Monolithic Power Systems (MPWR)
Metric	MKSI	MPWR
Total Return (1Y)	35.07%	42.29%
Total Return (3Y, Annualized)	46.46%	42.13%
Total Return (5Y, Annualized)	6.02%	20.48%

Risk Profile

Drawdown History

MKSI

MPWR

GSPC

MKS (MKSI) vs. Monolithic Power Systems (MPWR), with S&P 500 (GSPC) for reference: Drawdown from the running peak over the past five years. Each line shows the decline from its prior peak; 0% marks a new high.

Return Distribution

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Distribution of monthly total returns for MKS (MKSI) and Monolithic Power Systems (MPWR). Each bar is the share of months whose return fell in that 5% bucket.

Risk Metrics

Risk profile metrics for MKS (MKSI) and Monolithic Power Systems (MPWR)
Metric	MKSI	MPWR
Volatility (1Y, Annualized)	62.92%	57.22%
Beta (5Y)	2.12	1.67
Max Drawdown (5Y)	-66.57%	-51.65%
Avg. Volume (3M)	1.36M	776.23K

Risk-Adjusted Performance

Risk-Return Positioning

MKSI and MPWR are plotted by 1-year volatility (risk) and 1-year return. The dashed Capital Allocation Line runs from the risk-free rate through the shared industry median.

Risk-Adjusted Metrics

Risk-adjusted metrics for MKS (MKSI) and Monolithic Power Systems (MPWR)
Metric	MKSI	MPWR
Sharpe Ratio (1Y)	0.49	0.66
Sortino Ratio (1Y)	0.70	0.98

Profitability

ROE (TTM)

Monolithic Power Systems (MPWR) at 24.47% sits in the top ROE quartile, while MKS (MKSI) at 20.46% is closer to the peer norm — stronger capital efficiency for MPWR.

MKSI

Semiconductors & Semiconductor Equipment industry group

20.46%

Max: 52.82%
Q3: 22.26%
MKSI: 20.46%
Median: 10.58%
Q1: 1.29%
Min: -16.89%

MPWR

Semiconductors & Semiconductor Equipment industry group

24.47%

Max: 52.82%
MPWR: 24.47%
Q3: 22.26%
Median: 10.58%
Q1: 1.29%
Min: -16.89%

MKS (MKSI) vs. Monolithic Power Systems (MPWR): A comparison of their ROE against the Semiconductors & Semiconductor Equipment industry group benchmark.

Net Margin (TTM)

Both MKS (MKSI) at 12.62% and Monolithic Power Systems (MPWR) at 23.89% keep about the typical share of revenue as profit for their industries — neither bottom line stands out from peers.

MKSI

Semiconductors & Semiconductor Equipment industry group

12.62%

Max: 63.80%
Q3: 28.36%
MKSI: 12.62%
Median: 11.44%
Q1: 0.90%
Min: -37.77%

MPWR

Semiconductors & Semiconductor Equipment industry group

23.89%

Max: 63.80%
Q3: 28.36%
MPWR: 23.89%
Median: 11.44%
Q1: 0.90%
Min: -37.77%

MKS (MKSI) vs. Monolithic Power Systems (MPWR): A comparison of their net margin against the Semiconductors & Semiconductor Equipment industry group benchmark.

Operating Margin (TTM)

Both MKS (MKSI) at 23.21% and Monolithic Power Systems (MPWR) at 29.75% run core operations about as efficiently as their industries’ norm — neither stands out on operating profitability.

MKSI

Semiconductors & Semiconductor Equipment industry group

23.21%

Max: 58.66%
Q3: 30.23%
MKSI: 23.21%
Median: 15.91%
Q1: 7.54%
Min: -25.74%

MPWR

Semiconductors & Semiconductor Equipment industry group

29.75%

Max: 58.66%
Q3: 30.23%
MPWR: 29.75%
Median: 15.91%
Q1: 7.54%
Min: -25.74%

MKS (MKSI) vs. Monolithic Power Systems (MPWR): A comparison of their operating margin against the Semiconductors & Semiconductor Equipment industry group benchmark.

Profitability Metrics

Profitability metrics for MKS (MKSI) and Monolithic Power Systems (MPWR)
Metric	MKSI	MPWR
ROE (TTM)	20.46%	24.47%
ROA (TTM)	6.28%	15.52%
Net Margin (TTM)	12.62%	23.89%
Operating Margin (TTM)	23.21%	29.75%
Gross Margin (TTM)	47.26%	55.26%

Growth

Revenue Growth

Monolithic Power Systems (MPWR) at 26.43% sits in the top revenue growth quartile, while MKS (MKSI) at 9.62% is closer to the peer norm — faster top-line expansion for MPWR.

MKS (MKSI) vs. Monolithic Power Systems (MPWR): A comparison of their Revenue Growth across different time periods.

EPS Growth

MKS (MKSI) at 55.52% sits in the top EPS growth quartile, while Monolithic Power Systems (MPWR) at -64.85% is in the bottom quartile, showing a clear gap in earnings momentum.

MKS (MKSI) vs. Monolithic Power Systems (MPWR): A comparison of their EPS Growth across different time periods.

Growth Metrics

Growth metrics for MKS (MKSI) and Monolithic Power Systems (MPWR)
Metric	MKSI	MPWR
Revenue Growth (YoY)	9.62%	26.43%
Revenue Growth (3Y CAGR)	3.49%	15.86%
EPS Growth (YoY)	55.52%	-64.85%
EPS Growth (3Y CAGR)	-7.71%	12.43%

Financial Strength

Current Ratio (MRQ)

Monolithic Power Systems (MPWR) at 3.70 keeps current ratio within its industry’s typical mid-range, while MKS (MKSI) at 1.19 runs in the tighter-liquidity quartile — a thinner cushion against current liabilities for MKSI.

MKSI

Semiconductors & Semiconductor Equipment industry group

1.19

Max: 10.33
Q3: 5.62
Median: 3.33
Q1: 2.35
MKSI: 1.19
Min: 1.03

MPWR

Semiconductors & Semiconductor Equipment industry group

3.70

Max: 10.33
Q3: 5.62
MPWR: 3.70
Median: 3.33
Q1: 2.35
Min: 1.03

MKS (MKSI) vs. Monolithic Power Systems (MPWR): A comparison of their current ratio against the Semiconductors & Semiconductor Equipment industry group benchmark.

Debt / Equity (MRQ)

Monolithic Power Systems (MPWR) at 0.01 keeps leverage in the lower quartile, while MKS (MKSI) at 1.22 sits in the higher-leverage quartile.

MKSI

Semiconductors & Semiconductor Equipment industry group

1.22

Max: 1.46
MKSI: 1.22
Q3: 0.65
Median: 0.27
Q1: 0.04
Min: 0.00

MPWR

Semiconductors & Semiconductor Equipment industry group

0.01

Max: 1.46
Q3: 0.65
Median: 0.27
Q1: 0.04
MPWR: 0.01
Min: 0.00

MKS (MKSI) vs. Monolithic Power Systems (MPWR): A comparison of their debt-to-equity ratio against the Semiconductors & Semiconductor Equipment industry group benchmark.

Financial Strength Metrics

Financial strength metrics for MKS (MKSI) and Monolithic Power Systems (MPWR)
Metric	MKSI	MPWR
Current Ratio (MRQ)	1.19	3.70
Debt / Equity (MRQ)	1.22	0.01
Net Debt / EBITDA	2.67	-0.92

Dividends

Dividend Yield (TTM)

Monolithic Power Systems (MPWR) at 0.67% delivers top-quartile income for its industry, while MKS (MKSI) at 0.55% pays a more typical yield — both are credible income propositions, MPWR the richer one.

MKSI

Semiconductors & Semiconductor Equipment industry group

0.55%

Max: 1.37%
Q3: 0.65%
MKSI: 0.55%
Median: 0.00%
Q1: 0.00%
Min: 0.00%

MPWR

Semiconductors & Semiconductor Equipment industry group

0.67%

Max: 1.37%
MPWR: 0.67%
Q3: 0.65%
Median: 0.00%
Q1: 0.00%
Min: 0.00%

MKS (MKSI) vs. Monolithic Power Systems (MPWR): A comparison of their dividend yield against the Semiconductors & Semiconductor Equipment industry group benchmark.

Dividend Payout Ratio (TTM)

MKS (MKSI) at 11.48% pays out a band-typical share of earnings, while Monolithic Power Systems (MPWR) at 41.65% distributes more than its industry norm — less retained, thinner cover.

MKSI

Semiconductors & Semiconductor Equipment industry group

11.48%

Max: 49.64%
Q3: 21.71%
MKSI: 11.48%
Median: 0.00%
Q1: 0.00%
Min: 0.00%

MPWR

Semiconductors & Semiconductor Equipment industry group

41.65%

Max: 49.64%
MPWR: 41.65%
Q3: 21.71%
Median: 0.00%
Q1: 0.00%
Min: 0.00%

MKS (MKSI) vs. Monolithic Power Systems (MPWR): A comparison of their payout ratio against the Semiconductors & Semiconductor Equipment industry group benchmark.

Dividend Metrics

Dividend metrics for MKS (MKSI) and Monolithic Power Systems (MPWR)
Metric	MKSI	MPWR
Dividend Yield (TTM)	0.55%	0.67%
Dividend Payout Ratio (TTM)	11.48%	41.65%

Valuation

P/E Ratio (TTM)

MKS (MKSI) at 22.75 sits in the cheaper P/E ratio quartile, while Monolithic Power Systems (MPWR) at 65.27 is closer to its industry’s usual earnings multiple — a discount for MKSI, though growth and earnings durability still matter.

MKSI

Semiconductors & Semiconductor Equipment industry group

22.75

Max: 110.34
Q3: 66.81
Median: 37.02
Q1: 23.96
MKSI: 22.75
Min: 8.12

MPWR

Semiconductors & Semiconductor Equipment industry group

65.27

Max: 110.34
Q3: 66.81
MPWR: 65.27
Median: 37.02
Q1: 23.96
Min: 8.12

MKS (MKSI) vs. Monolithic Power Systems (MPWR): A comparison of their P/E ratio against the Semiconductors & Semiconductor Equipment industry group benchmark.

P/S Ratio (TTM)

MKS (MKSI) at 2.72 looks cheap on sales in the lower P/S ratio quartile, while Monolithic Power Systems (MPWR) at 15.53 looks rich in the upper quartile — a clear gap in price per dollar of revenue.

MKSI

Semiconductors & Semiconductor Equipment industry group

2.72

Max: 21.42
Q3: 12.27
Median: 5.76
Q1: 2.73
MKSI: 2.72
Min: 0.00

MPWR

Semiconductors & Semiconductor Equipment industry group

15.53

Max: 21.42
MPWR: 15.53
Q3: 12.27
Median: 5.76
Q1: 2.73
Min: 0.00

MKS (MKSI) vs. Monolithic Power Systems (MPWR): A comparison of their P/S ratio against the Semiconductors & Semiconductor Equipment industry group benchmark.

P/B Ratio (MRQ)

MKS (MKSI) at 3.96 sits near its industry’s typical P/B ratio, while Monolithic Power Systems (MPWR) at 15.56 prices above its benchmark range — MPWR looks rich relative to book.

MKSI

Semiconductors & Semiconductor Equipment industry group

3.96

Max: 14.06
Q3: 7.44
Median: 4.29
MKSI: 3.96
Q1: 2.30
Min: 0.20

MPWR

Semiconductors & Semiconductor Equipment industry group

15.56

MPWR: 15.56
Max: 14.06
Q3: 7.44
Median: 4.29
Q1: 2.30
Min: 0.20

MKS (MKSI) vs. Monolithic Power Systems (MPWR): A comparison of their P/B ratio against the Semiconductors & Semiconductor Equipment industry group benchmark.

Valuation Metrics

Valuation metrics for MKS (MKSI) and Monolithic Power Systems (MPWR)
Metric	MKSI	MPWR
P/E Ratio (TTM)	22.75	65.27
P/S Ratio (TTM)	2.72	15.53
P/B Ratio (MRQ)	3.96	15.56
Free Cash Flow Yield (TTM)	4.02%	0.87%