MASI vs. ATMU

Last updated Jun 5, 2026

MASI (Masimo Corporation) and ATMU (Atmus Filtration Technologies Inc.) are both stocks. MASI operates in Medical Instruments & Supplies (Healthcare), while ATMU operates in Pollution & Treatment Controls (Industrials). Over the past 3 years, MASI returned 2.79%/yr vs 31.02%/yr for ATMU. At a 0.21 correlation, their price movements are largely independent.

Performance

MASI vs. ATMU - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Masimo Corporation (MASI) and Atmus Filtration Technologies Inc. (ATMU). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, MASI achieves a 37.55% return, which is significantly higher than ATMU's -8.87% return.

MASI

• 1D: 0.07%
• 1M: 0.18%
• YTD: 37.55%
• 6M: 25.76%
• 1Y: 9.78%
• 3Y*: 2.79%
• 5Y*: -3.27%
• 10Y*: 13.63%

ATMU

• 1D: -0.34%
• 1M: -11.57%
• YTD: -8.87%
• 6M: -10.56%
• 1Y: 30.91%
• 3Y*: 31.02%
• 5Y*: —
• 10Y*: —

*Multi-year figures are annualized to reflect compound growth (CAGR)

MASI vs. ATMU - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023
MASI Masimo Corporation	37.55%	-21.32%	41.03%	-25.51%
ATMU Atmus Filtration Technologies Inc.	-8.87%	33.16%	67.28%	8.50%

Correlation

The correlation between MASI and ATMU is 0.23, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.23
Correlation (3Y) Calculated over the trailing 3-year period	0.21
Correlation (All Time) Calculated using the full available price history since May 30, 2023	0.21

Fundamentals

Market Cap MASI : $9.41B ATMU : $3.87B
EPS MASI : $1.41 ATMU : $2.56
PE Ratio MASI : 126.61 ATMU : 18.46
PS Ratio MASI : 6.20 ATMU : 2.89
PB Ratio MASI : 11.93 ATMU : 9.59
Total Revenue (TTM) MASI : $1.56B ATMU : $1.35B
Gross Profit (TTM) MASI : $962.00M ATMU : $529.00M
EBITDA (TTM) MASI : $336.40M ATMU : $334.60M

Return for Risk

MASI vs. ATMU — Risk / Return Rank

Compare risk-adjusted metric ranks to identify better-performing investments over the past 12 months.

MASI

MASI Risk / Return Rank: 51
MASI Sharpe Ratio Rank: 50
MASI Sortino Ratio Rank: 52
MASI Omega Ratio Rank: 52
MASI Calmar Ratio Rank: 50
MASI Martin Ratio Rank: 50

ATMU

ATMU Risk / Return Rank: 65
ATMU Sharpe Ratio Rank: 69
ATMU Sortino Ratio Rank: 61
ATMU Omega Ratio Rank: 64
ATMU Calmar Ratio Rank: 62
ATMU Martin Ratio Rank: 70

The rank (0–100) shows how this investment's returns compare to the risk taken. Higher = better. Based on the past 12 months of data, combining Sharpe, Sortino, and other metrics used by quantitative funds and institutional investors.

MASI vs. ATMU - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Masimo Corporation (MASI) and Atmus Filtration Technologies Inc. (ATMU). Risk-adjusted metrics are performance indicators that assess an investment's returns in relation to its risk, enabling a more accurate comparison of different investment options.

	MASI	ATMU	Difference
Sharpe ratio: Return per unit of total volatility	0.22	0.87	-0.65
Sortino ratio: Return per unit of downside risk	0.87	1.28	-0.41
Omega ratio: Gain probability vs. loss probability	1.12	1.19	-0.07
Calmar ratio: Return relative to maximum drawdown	0.38	1.03	-0.65
Martin ratio: Return relative to average drawdown	0.76	3.68	-2.93
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

MASI vs. ATMU - Sharpe Ratio Comparison

The current MASI Sharpe Ratio is 0.22, which is lower than the ATMU Sharpe Ratio of 0.87. The chart below compares the historical Sharpe Ratios of MASI and ATMU, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Sharpe Ratios by Period

	MASI	ATMU	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	0.22	0.87	-0.65
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	-0.07	—	—
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.36	—	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.35	0.87	-0.53

Drawdowns

MASI vs. ATMU - Drawdown Comparison

The maximum MASI drawdown since its inception was -74.70%, which is greater than ATMU's maximum drawdown of -30.22%. Use the drawdown chart below to compare losses from any high point for MASI and ATMU.

Drawdown Indicators

	MASI	ATMU	Difference
Max Drawdown Largest peak-to-trough decline	-74.70%	-30.22%	-44.48%
Max Drawdown (1Y) Largest decline over 1 year	-25.92%	-30.22%	+4.30%
Max Drawdown (3Y) Largest decline over 3 years	-53.83%	-30.22%	-23.61%
Max Drawdown (5Y) Largest decline over 5 years	-74.70%	—	—
Max Drawdown (10Y) Largest decline over 10 years	-74.70%	—	—
Current Drawdown Current decline from peak	-41.01%	-27.92%	-13.09%
Average Drawdown Average peak-to-trough decline	-27.22%	-8.53%	-18.69%
Ulcer Index Depth and duration of drawdowns from previous peaks	12.96%	8.41%	+4.55%

Volatility

MASI vs. ATMU - Volatility Comparison

The current volatility for Masimo Corporation (MASI) is 0.39%, while Atmus Filtration Technologies Inc. (ATMU) has a volatility of 10.19%. This indicates that MASI experiences smaller price fluctuations and is considered to be less risky than ATMU based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	MASI	ATMU	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.39%	10.19%	-9.80%
Volatility (6M) Calculated over the trailing 6-month period	32.84%	30.37%	+2.47%
Volatility (1Y) Calculated over the trailing 1-year period	44.52%	35.80%	+8.72%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	44.78%	34.40%	+10.38%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	37.73%	34.40%	+3.33%

Dividends

MASI vs. ATMU - Dividend Comparison

MASI has not paid dividends to shareholders, while ATMU's dividend yield for the trailing twelve months is around 0.47%.

Position	TTM	2025	2024
ATMU Atmus Filtration Technologies Inc.	0.47%	0.40%	0.26%
MASI Masimo Corporation	0.00%	0.00%	0.00%

Financials

Frequently Asked Questions

Can I hold both MASI and ATMU in my portfolio?

MASI and ATMU have a correlation of 0.23, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, MASI or ATMU?

ATMU has higher volatility (10.19%) compared to MASI (0.39%). In terms of maximum drawdown, MASI dropped -74.70% vs ATMU's -30.22%.

Which has better risk-adjusted returns?

ATMU currently has the higher Sharpe Ratio (0.87 vs 0.22), meaning it's delivered slightly more return per unit of risk over the trailing 12 months. However, this ranking shifts over time - use the Risk/Return Score above for a more comprehensive view that combines Sharpe, Sortino, and other measures used by quantitative funds.