ACSI vs. MFUS

Last updated Jun 4, 2026

ACSI (American Customer Satisfaction ETF) and MFUS (PIMCO RAFI Dynamic Multi-Factor U.S. Equity ETF) are both Large Cap Growth Equities funds - ACSI tracks the American Customer Satisfaction Investable Index while MFUS tracks the RAFI Dynamic Multi-Factor U.S. Index​. Both are passively managed. Over the past 5 years, ACSI returned 9.12%/yr vs 12.82%/yr for MFUS. Their correlation of 0.84 suggests significant overlap in exposure. ACSI charges 0.66%/yr vs 0.30%/yr for MFUS.

Performance

ACSI vs. MFUS - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in American Customer Satisfaction ETF (ACSI) and PIMCO RAFI Dynamic Multi-Factor U.S. Equity ETF (MFUS). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, ACSI achieves a 9.66% return, which is significantly lower than MFUS's 16.37% return.

ACSI

• 1D: -0.92%
• 1M: 5.55%
• YTD: 9.66%
• 6M: 9.77%
• 1Y: 18.71%
• 3Y*: 18.51%
• 5Y*: 9.12%
• 10Y*: —

MFUS

• 1D: 0.03%
• 1M: 5.72%
• YTD: 16.37%
• 6M: 16.58%
• 1Y: 28.04%
• 3Y*: 22.25%
• 5Y*: 12.82%
• 10Y*: —

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

ACSI vs. MFUS - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
ACSI American Customer Satisfaction ETF	9.66%	10.70%	22.51%	21.06%	-20.93%	23.33%	22.93%	24.88%	-4.97%	8.50%
MFUS PIMCO RAFI Dynamic Multi-Factor U.S. Equity ETF	16.37%	16.02%	20.17%	12.19%	-5.82%	24.10%	10.64%	26.17%	-7.30%	11.20%

Correlation

The correlation between ACSI and MFUS is 0.75, which is moderate. They share some common price drivers but move independently often enough to provide real diversification benefit when combined.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.75
Correlation (3Y) Calculated over the trailing 3-year period	0.81
Correlation (5Y) Calculated over the trailing 5-year period	0.84
Correlation (All Time) Calculated using the full available price history since Sep 7, 2017	0.84

The correlation between ACSI and MFUS has been stable across timeframes, ranging from 0.75 to 0.84 - a consistent structural relationship.

ACSI vs. MFUS - Sectors Allocation Comparison

Sectors	ACSI	MFUS
Consumer Cyclical	24.2%	10.6%
Communication Services	15.4%	5.3%
Technology	12.5%	21.8%
Consumer Defensive	12.4%	10.3%
Financial Services	9.6%	12.6%
Healthcare	8.5%	13.5%
Industrials	7.3%	12.6%
Utilities	3.9%	1.7%
Energy	3.4%	7.0%
Basic Materials	-	2.8%
Real Estate	-	1.8%

Return for Risk

ACSI vs. MFUS — Risk / Return Rank

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

ACSI

ACSI Risk / Return Rank: 48
ACSI Sharpe Ratio Rank: 46
ACSI Sortino Ratio Rank: 46
ACSI Omega Ratio Rank: 44
ACSI Calmar Ratio Rank: 49
ACSI Martin Ratio Rank: 54

MFUS

MFUS Risk / Return Rank: 82
MFUS Sharpe Ratio Rank: 80
MFUS Sortino Ratio Rank: 83
MFUS Omega Ratio Rank: 78
MFUS Calmar Ratio Rank: 83
MFUS Martin Ratio Rank: 86

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.

ACSI vs. MFUS - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for American Customer Satisfaction ETF (ACSI) and PIMCO RAFI Dynamic Multi-Factor U.S. Equity ETF (MFUS). 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.

	ACSI	MFUS	Difference
Sharpe ratio: Return per unit of total volatility	1.63	2.63	-1.00
Sortino ratio: Return per unit of downside risk	2.31	3.77	-1.46
Omega ratio: Gain probability vs. loss probability	1.29	1.47	-0.19
Calmar ratio: Return relative to maximum drawdown	2.42	4.41	-1.99
Martin ratio: Return relative to average drawdown	9.45	18.13	-8.67
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

ACSI vs. MFUS - Sharpe Ratio Comparison

The current ACSI Sharpe Ratio is 1.63, which is lower than the MFUS Sharpe Ratio of 2.63. The chart below compares the historical Sharpe Ratios of ACSI and MFUS, 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

	ACSI	MFUS	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.63	2.63	-1.00
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.55	0.86	-0.31
Sharpe Ratio (All Time) Calculated using the full available price history	0.75	0.79	-0.04

Drawdowns

ACSI vs. MFUS - Drawdown Comparison

The maximum ACSI drawdown since its inception was -34.49%, roughly equal to the maximum MFUS drawdown of -35.21%. Use the drawdown chart below to compare losses from any high point for ACSI and MFUS.

Drawdown Indicators

	ACSI	MFUS	Difference
Max Drawdown Largest peak-to-trough decline	-34.49%	-35.21%	+0.72%
Max Drawdown (1Y) Largest decline over 1 year	-7.76%	-6.39%	-1.37%
Max Drawdown (3Y) Largest decline over 3 years	-15.27%	-15.39%	+0.12%
Max Drawdown (5Y) Largest decline over 5 years	-24.86%	-18.22%	-6.64%
Current Drawdown Current decline from peak	-2.38%	0.00%	-2.38%
Average Drawdown Average peak-to-trough decline	-5.39%	-4.00%	-1.39%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.98%	1.55%	+0.43%

Volatility

ACSI vs. MFUS - Volatility Comparison

American Customer Satisfaction ETF (ACSI) has a higher volatility of 4.16% compared to PIMCO RAFI Dynamic Multi-Factor U.S. Equity ETF (MFUS) at 3.19%. This indicates that ACSI's price experiences larger fluctuations and is considered to be riskier than MFUS based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	ACSI	MFUS	Difference
Volatility (1M) Calculated over the trailing 1-month period	4.16%	3.19%	+0.97%
Volatility (6M) Calculated over the trailing 6-month period	8.88%	8.22%	+0.66%
Volatility (1Y) Calculated over the trailing 1-year period	11.56%	10.72%	+0.84%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	16.66%	15.03%	+1.63%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	17.43%	17.35%	+0.08%

ACSI vs. MFUS - Expense Ratio Comparison

ACSI has a 0.66% expense ratio, which is higher than MFUS's 0.30% expense ratio.

Dividends

ACSI vs. MFUS - Dividend Comparison

ACSI's dividend yield for the trailing twelve months is around 0.83%, less than MFUS's 1.36% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016
ACSI American Customer Satisfaction ETF	0.83%	0.91%	0.69%	1.01%	0.81%	0.31%	0.82%	1.64%	1.59%	1.20%	0.18%
MFUS PIMCO RAFI Dynamic Multi-Factor U.S. Equity ETF	1.36%	1.54%	1.45%	1.96%	2.07%	1.35%	1.72%	1.89%	1.69%	1.01%	0.00%

Frequently Asked Questions

Can I hold both ACSI and MFUS in my portfolio?

ACSI and MFUS have a correlation of 0.75, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, ACSI or MFUS?

ACSI has higher volatility (4.16%) compared to MFUS (3.19%). In terms of maximum drawdown, ACSI dropped -34.49% vs MFUS's -35.21%.

Which ETF is better, ACSI or MFUS?

On 5-year performance, MFUS leads with 12.82% vs 9.12% for ACSI. On fees, MFUS is cheaper at 0.30% per year. On volatility, MFUS has been the lower-risk option at 3.19%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, ACSI or MFUS?

Over the 5-year period, MFUS has performed better with a 12.82% return vs 9.12%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, ACSI or MFUS?

MFUS is cheaper with a 0.30% expense ratio, compared with 0.66% for ACSI.

Which ETF pays a higher dividend yield, ACSI or MFUS?

MFUS has the higher dividend yield at 1.36%, compared with 0.83% for ACSI.

What is the main difference between ACSI and MFUS?

ACSI tracks American Customer Satisfaction Investable Index, while MFUS tracks RAFI Dynamic Multi-Factor U.S. Index​. They also come from different issuers: Exponential ETFs and PIMCO. Their fees differ too: 0.66% for ACSI and 0.30% for MFUS.

Which has better risk-adjusted returns?

MFUS currently has the higher Sharpe Ratio (2.63 vs 1.63), 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.