ATRO vs. SMMU

Last updated Jun 25, 2026

ATRO (Astronics Corporation) is a stock, while SMMU (PIMCO Short Term Municipal Bond Active ETF) is Municipal Bonds fund actively managed by PIMCO. Over the past 10 years, ATRO returned 14.24%/yr vs 1.81%/yr for SMMU. At a correlation of -0.02, they often move in opposite directions.

Performance

ATRO vs. SMMU - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Astronics Corporation (ATRO) and PIMCO Short Term Municipal Bond Active ETF (SMMU). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, ATRO achieves a 96.04% return, which is significantly higher than SMMU's 1.27% return. Over the past 10 years, ATRO has outperformed SMMU with an annualized return of 14.24%, while SMMU has yielded a comparatively lower 1.81% annualized return.

ATRO

• 1D: 2.61%
• 1M: 31.50%
• YTD: 96.04%
• 6M: 92.38%
• 1Y: 218.54%
• 3Y*: 79.32%
• 5Y*: 43.38%
• 10Y*: 14.24%

SMMU

• 1D: 0.06%
• 1M: 0.56%
• YTD: 1.27%
• 6M: 1.29%
• 1Y: 3.63%
• 3Y*: 3.60%
• 5Y*: 1.94%
• 10Y*: 1.81%

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

ATRO vs. SMMU - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
ATRO Astronics Corporation	96.04%	239.85%	-8.38%	69.13%	-14.17%	-9.30%	-52.67%	-8.21%	-13.21%	22.55%
SMMU PIMCO Short Term Municipal Bond Active ETF	1.27%	4.06%	2.68%	4.39%	-2.45%	0.17%	2.87%	3.47%	1.51%	2.34%

Correlation

The correlation between ATRO and SMMU is 0.05, meaning there is essentially no relationship between their price movements. Each responds to its own set of market drivers, making them strong candidates for combining in a diversified portfolio.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.05
Correlation (3Y) Calculated over the trailing 3-year period	0.08
Correlation (5Y) Calculated over the trailing 5-year period	0.04
Correlation (10Y) Calculated over the trailing 10-year period	0.00
Correlation (All Time) Calculated using the full available price history since Feb 3, 2010	-0.02

The correlation between ATRO and SMMU shifts across timeframes, from -0.02 (all time) to 0.08 (3 years), reflecting how their relationship changes across market environments.

Return for Risk

ATRO vs. SMMU — Risk / Return Rank

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

ATRO

ATRO Risk / Return Rank: 97
ATRO Sharpe Ratio Rank: 98
ATRO Sortino Ratio Rank: 95
ATRO Omega Ratio Rank: 95
ATRO Calmar Ratio Rank: 97
ATRO Martin Ratio Rank: 98

SMMU

SMMU Risk / Return Rank: 93
SMMU Sharpe Ratio Rank: 96
SMMU Sortino Ratio Rank: 96
SMMU Omega Ratio Rank: 97
SMMU Calmar Ratio Rank: 89
SMMU Martin Ratio Rank: 88

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.

ATRO vs. SMMU - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Astronics Corporation (ATRO) and PIMCO Short Term Municipal Bond Active ETF (SMMU). 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.

Values are calculated on a 1-year rolling basis and updated daily. Risk-adjusted metrics are more stable over longer periods — use the period switch above to explore them.

	ATRO	SMMU	Difference
Sharpe ratio: Return per unit of total volatility	3.94	3.56	+0.38
Sortino ratio: Return per unit of downside risk	4.01	5.39	-1.39
Omega ratio: Gain probability vs. loss probability	1.54	1.81	-0.27
Calmar ratio: Return relative to maximum drawdown	9.41	4.74	+4.67
Martin ratio: Return relative to average drawdown	32.47	16.92	+15.55

ATRO vs. SMMU - Sharpe Ratio Comparison

The current ATRO Sharpe Ratio is 3.94, which is comparable to the SMMU Sharpe Ratio of 3.56. The chart below compares the historical Sharpe Ratios of ATRO and SMMU, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Drawdowns

ATRO vs. SMMU - Drawdown Comparison

The maximum ATRO drawdown since its inception was -90.12%, which is greater than SMMU's maximum drawdown of -5.09%. Use the drawdown chart below to compare losses from any high point for ATRO and SMMU.

Drawdown Indicators

	ATRO	SMMU	Difference
Max Drawdown Largest peak-to-trough decline	-90.12%	-5.09%	-85.03%
Max Drawdown (1Y) Largest decline over 1 year	-23.39%	-0.77%	-22.62%
Max Drawdown (3Y) Largest decline over 3 years	-34.89%	-1.95%	-32.94%
Max Drawdown (5Y) Largest decline over 5 years	-60.47%	-4.76%	-55.71%
Max Drawdown (10Y) Largest decline over 10 years	-85.52%	-5.09%	-80.43%
Current Drawdown Current decline from peak	0.00%	0.00%	0.00%
Average Drawdown Average peak-to-trough decline	-38.05%	-0.55%	-37.50%
Ulcer Index Depth and duration of drawdowns from previous peaks	6.76%	0.22%	+6.54%

Volatility

ATRO vs. SMMU - Volatility Comparison

Astronics Corporation (ATRO) has a higher volatility of 17.56% compared to PIMCO Short Term Municipal Bond Active ETF (SMMU) at 0.25%. This indicates that ATRO's price experiences larger fluctuations and is considered to be riskier than SMMU based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	ATRO	SMMU	Difference
Volatility (1M) Calculated over the trailing 1-month period	17.56%	0.25%	+17.31%
Volatility (6M) Calculated over the trailing 6-month period	39.12%	0.80%	+38.32%
Volatility (1Y) Calculated over the trailing 1-year period	55.84%	1.02%	+54.82%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	55.13%	1.67%	+53.46%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	56.89%	2.72%	+54.17%

Dividends

ATRO vs. SMMU - Dividend Comparison

ATRO has not paid dividends to shareholders, while SMMU's dividend yield for the trailing twelve months is around 2.83%.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
ATRO Astronics Corporation	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%
SMMU PIMCO Short Term Municipal Bond Active ETF	2.83%	2.80%	3.03%	2.79%	1.37%	0.60%	1.19%	1.82%	1.57%	1.41%	1.03%	0.89%

Frequently Asked Questions

Can I hold both ATRO and SMMU in my portfolio?

ATRO and SMMU have a correlation of 0.05, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, ATRO or SMMU?

ATRO has higher volatility (17.56%) compared to SMMU (0.25%). In terms of maximum drawdown, ATRO dropped -90.12% vs SMMU's -5.09%.

Which has better risk-adjusted returns?

ATRO currently has the higher Sharpe Ratio (3.94 vs 3.56), 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.