ACGYX vs. ALTFX

Last updated Apr 1, 2026

Compare and contrast key facts about AB Income Fund (ACGYX) and AB Sustainable Global Thematic Fund (ALTFX).

ACGYX is managed by AllianceBernstein. It was launched on Aug 28, 1987. ALTFX is managed by AllianceBernstein. It was launched on Feb 28, 1982.

Performance

ACGYX vs. ALTFX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in AB Income Fund (ACGYX) and AB Sustainable Global Thematic Fund (ALTFX). The values are adjusted to include any dividend payments, if applicable.

ACGYX vs. ALTFX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
ACGYX AB Income Fund	-1.08%	7.86%	2.07%	6.16%	-15.45%	-1.30%	6.88%	11.25%	-1.21%	6.33%
ALTFX AB Sustainable Global Thematic Fund	-10.89%	6.22%	5.94%	15.97%	-27.19%	22.64%	39.40%	33.60%	-9.86%	37.16%

Returns By Period

In the year-to-date period, ACGYX achieves a -1.08% return, which is significantly higher than ALTFX's -10.89% return.

ACGYX

• 1D: 0.47%
• 1M: -2.90%
• YTD: -1.08%
• 6M: -0.04%
• 1Y: 3.53%
• 3Y*: 4.04%
• 5Y*: -0.04%
• 10Y*: —

ALTFX

• 1D: -0.30%
• 1M: -9.85%
• YTD: -10.89%
• 6M: -13.62%
• 1Y: 1.12%
• 3Y*: 3.26%
• 5Y*: 0.18%
• 10Y*: 9.62%

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

ACGYX vs. ALTFX - Expense Ratio Comparison

ACGYX has a 0.54% expense ratio, which is lower than ALTFX's 1.02% expense ratio.

ALTFX

AB Sustainable Global Thematic Fund

ACGYX

AB Income Fund

Return for Risk

ACGYX vs. ALTFX — Risk / Return Rank

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

ACGYX

ACGYX Risk / Return Rank: 42
ACGYX Sharpe Ratio Rank: 41
ACGYX Sortino Ratio Rank: 37
ACGYX Omega Ratio Rank: 30
ACGYX Calmar Ratio Rank: 59
ACGYX Martin Ratio Rank: 44

ALTFX

ALTFX Risk / Return Rank: 6
ALTFX Sharpe Ratio Rank: 6
ALTFX Sortino Ratio Rank: 6
ALTFX Omega Ratio Rank: 6
ALTFX Calmar Ratio Rank: 6
ALTFX Martin Ratio Rank: 6

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.

ACGYX vs. ALTFX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for AB Income Fund (ACGYX) and AB Sustainable Global Thematic Fund (ALTFX). 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.

	ACGYX	ALTFX	Difference
Sharpe ratio Return per unit of total volatility	0.85	0.05	+0.80
Sortino ratio Return per unit of downside risk	1.19	0.20	+0.99
Omega ratio Gain probability vs. loss probability	1.15	1.03	+0.12
Calmar ratio Return relative to maximum drawdown	1.37	-0.05	+1.42
Martin ratio Return relative to average drawdown	4.45	-0.16	+4.61
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

ACGYX vs. ALTFX - Sharpe Ratio Comparison

The current ACGYX Sharpe Ratio is 0.85, which is higher than the ALTFX Sharpe Ratio of 0.05. The chart below compares the historical Sharpe Ratios of ACGYX and ALTFX, 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

	ACGYX	ALTFX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	0.85	0.05	+0.80
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	-0.01	0.01	-0.02
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	—	0.54	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.39	0.26	+0.14

Correlation

The correlation between ACGYX and ALTFX is 0.15, which is considered to be low. This implies their price changes are not closely related. A low correlation is generally favorable for portfolio diversification, as it helps to reduce overall risk by spreading it across multiple assets with different performance patterns.

Dividends

ACGYX vs. ALTFX - Dividend Comparison

ACGYX's dividend yield for the trailing twelve months is around 4.62%, less than ALTFX's 15.18% yield.

	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016
ACGYX AB Income Fund	4.62%	5.02%	5.38%	4.04%	3.99%	2.95%	3.80%	4.50%	4.54%	5.84%	3.23%
ALTFX AB Sustainable Global Thematic Fund	15.18%	13.53%	8.18%	0.03%	2.61%	9.99%	7.23%	6.01%	8.36%	0.00%	4.05%

Drawdowns

ACGYX vs. ALTFX - Drawdown Comparison

The maximum ACGYX drawdown since its inception was -21.58%, smaller than the maximum ALTFX drawdown of -80.01%. Use the drawdown chart below to compare losses from any high point for ACGYX and ALTFX.

Drawdown Indicators

	ACGYX	ALTFX	Difference
Max Drawdown Largest peak-to-trough decline	-21.58%	-80.01%	+58.43%
Max Drawdown (1Y) Largest decline over 1 year	-3.36%	-15.81%	+12.45%
Max Drawdown (5Y) Largest decline over 5 years	-21.58%	-35.87%	+14.29%
Max Drawdown (10Y) Largest decline over 10 years	—	-35.87%	—
Current Drawdown Current decline from peak	-3.84%	-16.56%	+12.72%
Average Drawdown Average peak-to-trough decline	-5.45%	-37.13%	+31.68%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.04%	4.93%	-3.89%

Volatility

ACGYX vs. ALTFX - Volatility Comparison

The current volatility for AB Income Fund (ACGYX) is 1.68%, while AB Sustainable Global Thematic Fund (ALTFX) has a volatility of 5.52%. This indicates that ACGYX experiences smaller price fluctuations and is considered to be less risky than ALTFX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	ACGYX	ALTFX	Difference
Volatility (1M) Calculated over the trailing 1-month period	1.68%	5.52%	-3.84%
Volatility (6M) Calculated over the trailing 6-month period	2.77%	10.66%	-7.89%
Volatility (1Y) Calculated over the trailing 1-year period	4.71%	18.53%	-13.82%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	6.45%	18.10%	-11.65%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	5.44%	17.96%	-12.52%