ESGG vs. ACSI

Last updated Apr 1, 2026

Compare and contrast key facts about FlexShares STOXX Global ESG Select Index Fund (ESGG) and American Customer Satisfaction ETF (ACSI).

ESGG and ACSI are both exchange-traded funds (ETFs), meaning they are traded on stock exchanges and can be bought and sold throughout the day. ESGG is a passively managed fund by Northern Trust that tracks the performance of the STOXX Global ESG Select KPIs Index. It was launched on Jul 13, 2016. ACSI is a passively managed fund by Exponential ETFs that tracks the performance of the American Customer Satisfaction Investable Index. It was launched on Nov 1, 2016. Both ESGG and ACSI are passive ETFs, meaning that they are not actively managed but aim to replicate the performance of the underlying index as closely as possible.

Performance

ESGG vs. ACSI - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in FlexShares STOXX Global ESG Select Index Fund (ESGG) and American Customer Satisfaction ETF (ACSI). The values are adjusted to include any dividend payments, if applicable.

ESGG vs. ACSI - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
ESGG FlexShares STOXX Global ESG Select Index Fund	-2.46%	24.01%	14.48%	25.57%	-18.66%	23.76%	17.32%	29.10%	-8.44%	23.60%
ACSI American Customer Satisfaction ETF	-3.29%	10.70%	22.51%	21.06%	-20.93%	23.33%	22.93%	24.88%	-4.97%	15.77%

Returns By Period

In the year-to-date period, ESGG achieves a -2.46% return, which is significantly higher than ACSI's -3.29% return.

ESGG

• 1D: 2.81%
• 1M: -5.59%
• YTD: -2.46%
• 6M: 1.88%
• 1Y: 19.49%
• 3Y*: 16.79%
• 5Y*: 10.45%
• 10Y*: —

ACSI

• 1D: 2.22%
• 1M: -4.94%
• YTD: -3.29%
• 6M: -2.09%
• 1Y: 9.48%
• 3Y*: 14.24%
• 5Y*: 7.52%
• 10Y*: —

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

ESGG vs. ACSI - Expense Ratio Comparison

ESGG has a 0.42% expense ratio, which is lower than ACSI's 0.66% expense ratio.

ACSI

American Customer Satisfaction ETF

ESGG

FlexShares STOXX Global ESG Select Index Fund

Return for Risk

ESGG vs. ACSI — Risk / Return Rank

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

ESGG

ESGG Risk / Return Rank: 69
ESGG Sharpe Ratio Rank: 65
ESGG Sortino Ratio Rank: 70
ESGG Omega Ratio Rank: 70
ESGG Calmar Ratio Rank: 65
ESGG Martin Ratio Rank: 76

ACSI

ACSI Risk / Return Rank: 38
ACSI Sharpe Ratio Rank: 34
ACSI Sortino Ratio Rank: 35
ACSI Omega Ratio Rank: 35
ACSI Calmar Ratio Rank: 42
ACSI Martin Ratio Rank: 46

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.

ESGG vs. ACSI - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for FlexShares STOXX Global ESG Select Index Fund (ESGG) and American Customer Satisfaction ETF (ACSI). 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.

	ESGG	ACSI	Difference
Sharpe ratio Return per unit of total volatility	1.14	0.61	+0.53
Sortino ratio Return per unit of downside risk	1.74	0.98	+0.76
Omega ratio Gain probability vs. loss probability	1.26	1.14	+0.12
Calmar ratio Return relative to maximum drawdown	1.63	1.03	+0.60
Martin ratio Return relative to average drawdown	7.95	4.19	+3.75
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

ESGG vs. ACSI - Sharpe Ratio Comparison

The current ESGG Sharpe Ratio is 1.14, which is higher than the ACSI Sharpe Ratio of 0.61. The chart below compares the historical Sharpe Ratios of ESGG and ACSI, offering insights into how both investments have performed under varying market conditions. These values are calculated using daily returns over the previous 12 months.

Sharpe Ratios by Period

	ESGG	ACSI	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.14	0.61	+0.53
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.66	0.45	+0.20
Sharpe Ratio (All Time) Calculated using the full available price history	0.76	0.68	+0.08

Correlation

The correlation between ESGG and ACSI is 0.80, which is considered to be high. That indicates a strong positive relationship between their price movements. Having highly-correlated positions in a portfolio may signal a lack of diversification, potentially leading to increased risk during market downturns.

Dividends

ESGG vs. ACSI - Dividend Comparison

ESGG's dividend yield for the trailing twelve months is around 1.43%, more than ACSI's 0.94% yield.

	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016
ESGG FlexShares STOXX Global ESG Select Index Fund	1.43%	1.39%	1.84%	1.73%	1.83%	1.34%	1.36%	1.94%	2.12%	1.71%	0.87%
ACSI American Customer Satisfaction ETF	0.94%	0.91%	0.69%	1.01%	0.81%	0.31%	0.82%	1.64%	1.59%	1.20%	0.18%

Drawdowns

ESGG vs. ACSI - Drawdown Comparison

The maximum ESGG drawdown since its inception was -32.31%, smaller than the maximum ACSI drawdown of -34.49%. Use the drawdown chart below to compare losses from any high point for ESGG and ACSI.

Drawdown Indicators

	ESGG	ACSI	Difference
Max Drawdown Largest peak-to-trough decline	-32.31%	-34.49%	+2.18%
Max Drawdown (1Y) Largest decline over 1 year	-12.21%	-9.91%	-2.30%
Max Drawdown (5Y) Largest decline over 5 years	-27.57%	-24.86%	-2.71%
Current Drawdown Current decline from peak	-6.61%	-5.67%	-0.94%
Average Drawdown Average peak-to-trough decline	-4.73%	-5.47%	+0.74%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.51%	2.43%	+0.08%

Volatility

ESGG vs. ACSI - Volatility Comparison

FlexShares STOXX Global ESG Select Index Fund (ESGG) has a higher volatility of 5.59% compared to American Customer Satisfaction ETF (ACSI) at 4.72%. This indicates that ESGG's price experiences larger fluctuations and is considered to be riskier than ACSI based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	ESGG	ACSI	Difference
Volatility (1M) Calculated over the trailing 1-month period	5.59%	4.72%	+0.87%
Volatility (6M) Calculated over the trailing 6-month period	9.28%	8.54%	+0.74%
Volatility (1Y) Calculated over the trailing 1-year period	17.15%	15.67%	+1.48%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	15.99%	16.66%	-0.67%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	16.55%	17.50%	-0.95%