CPUIX vs. ACISX

Last updated Jun 4, 2026

CPUIX (AAM/Insight Select Income Fund) and ACISX (AB Corporate Income Shares) are both Corporate Bonds funds. Over the past 10 years, CPUIX returned 2.79%/yr vs 3.04%/yr for ACISX. Their correlation of 0.91 suggests significant overlap in exposure. CPUIX charges 0.57%/yr vs 0.00%/yr for ACISX.

Performance

CPUIX vs. ACISX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in AAM/Insight Select Income Fund (CPUIX) and AB Corporate Income Shares (ACISX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, CPUIX achieves a 0.54% return, which is significantly lower than ACISX's 0.98% return. Over the past 10 years, CPUIX has underperformed ACISX with an annualized return of 2.79%, while ACISX has yielded a comparatively higher 3.04% annualized return.

CPUIX

• 1D: 0.11%
• 1M: 0.83%
• YTD: 0.54%
• 6M: 0.46%
• 1Y: 6.36%
• 3Y*: 5.09%
• 5Y*: 0.38%
• 10Y*: 2.79%

ACISX

• 1D: 0.00%
• 1M: 0.94%
• YTD: 0.98%
• 6M: 0.91%
• 1Y: 6.89%
• 3Y*: 5.97%
• 5Y*: 0.77%
• 10Y*: 3.04%

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

CPUIX vs. ACISX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
CPUIX AAM/Insight Select Income Fund	0.54%	6.59%	2.61%	8.40%	-16.27%	-0.12%	10.20%	14.81%	-3.01%	6.86%
ACISX AB Corporate Income Shares	0.98%	8.44%	3.04%	7.65%	-16.27%	-1.23%	11.27%	16.95%	-2.81%	6.19%

Correlation

The correlation between CPUIX and ACISX is 0.88, indicating a strong positive relationship between their price movements. Combining them offers limited diversification - they tend to fall together during downturns.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.88
Correlation (3Y) Calculated over the trailing 3-year period	0.92
Correlation (5Y) Calculated over the trailing 5-year period	0.93
Correlation (10Y) Calculated over the trailing 10-year period	0.92
Correlation (All Time) Calculated using the full available price history since Jan 3, 2014	0.91

The correlation between CPUIX and ACISX has been stable across timeframes, ranging from 0.88 to 0.93 - a consistent structural relationship.

Return for Risk

CPUIX vs. ACISX — Risk / Return Rank

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

CPUIX

CPUIX Risk / Return Rank: 30
CPUIX Sharpe Ratio Rank: 30
CPUIX Sortino Ratio Rank: 31
CPUIX Omega Ratio Rank: 29
CPUIX Calmar Ratio Rank: 30
CPUIX Martin Ratio Rank: 28

ACISX

ACISX Risk / Return Rank: 33
ACISX Sharpe Ratio Rank: 32
ACISX Sortino Ratio Rank: 34
ACISX Omega Ratio Rank: 32
ACISX Calmar Ratio Rank: 33
ACISX Martin Ratio Rank: 32

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.

CPUIX vs. ACISX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for AAM/Insight Select Income Fund (CPUIX) and AB Corporate Income Shares (ACISX). 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.

	CPUIX	ACISX	Difference
Sharpe ratio: Return per unit of total volatility	1.57	1.64	-0.07
Sortino ratio: Return per unit of downside risk	2.33	2.45	-0.12
Omega ratio: Gain probability vs. loss probability	1.28	1.30	-0.02
Calmar ratio: Return relative to maximum drawdown	2.05	2.15	-0.10
Martin ratio: Return relative to average drawdown	6.61	7.17	-0.57
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

CPUIX vs. ACISX - Sharpe Ratio Comparison

The current CPUIX Sharpe Ratio is 1.57, which is comparable to the ACISX Sharpe Ratio of 1.64. The chart below compares the historical Sharpe Ratios of CPUIX and ACISX, 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

	CPUIX	ACISX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.57	1.64	-0.07
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.06	0.12	-0.05
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.51	0.51	0.00
Sharpe Ratio (All Time) Calculated using the full available price history	0.64	0.58	+0.06

Drawdowns

CPUIX vs. ACISX - Drawdown Comparison

The maximum CPUIX drawdown since its inception was -22.37%, roughly equal to the maximum ACISX drawdown of -22.65%. Use the drawdown chart below to compare losses from any high point for CPUIX and ACISX.

Drawdown Indicators

	CPUIX	ACISX	Difference
Max Drawdown Largest peak-to-trough decline	-22.37%	-22.65%	+0.28%
Max Drawdown (1Y) Largest decline over 1 year	-3.22%	-3.26%	+0.04%
Max Drawdown (3Y) Largest decline over 3 years	-6.03%	-6.56%	+0.53%
Max Drawdown (5Y) Largest decline over 5 years	-22.37%	-22.65%	+0.28%
Max Drawdown (10Y) Largest decline over 10 years	-22.37%	-22.65%	+0.28%
Current Drawdown Current decline from peak	-1.68%	-0.81%	-0.87%
Average Drawdown Average peak-to-trough decline	-4.47%	-4.46%	-0.01%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.00%	0.98%	+0.02%

Volatility

CPUIX vs. ACISX - Volatility Comparison

AAM/Insight Select Income Fund (CPUIX) and AB Corporate Income Shares (ACISX) have volatilities of 1.55% and 1.50%, respectively, indicating that both stocks experience similar levels of price fluctuations. This suggests that the risk associated with both stocks, as measured by volatility, is nearly the same. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	CPUIX	ACISX	Difference
Volatility (1M) Calculated over the trailing 1-month period	1.55%	1.50%	+0.05%
Volatility (6M) Calculated over the trailing 6-month period	3.07%	3.16%	-0.09%
Volatility (1Y) Calculated over the trailing 1-year period	4.22%	4.30%	-0.08%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	5.99%	6.49%	-0.50%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	5.52%	6.00%	-0.48%

CPUIX vs. ACISX - Expense Ratio Comparison

CPUIX has a 0.57% expense ratio, which is higher than ACISX's 0.00% expense ratio.

Dividends

CPUIX vs. ACISX - Dividend Comparison

CPUIX's dividend yield for the trailing twelve months is around 4.79%, less than ACISX's 5.06% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
ACISX AB Corporate Income Shares	5.06%	5.10%	4.97%	3.66%	3.48%	3.44%	5.62%	4.77%	3.99%	3.28%	3.54%	3.63%
CPUIX AAM/Insight Select Income Fund	4.79%	3.53%	3.81%	3.61%	3.98%	3.15%	3.83%	3.19%	3.80%	3.12%	3.21%	3.29%

Frequently Asked Questions

Can I hold both CPUIX and ACISX in my portfolio?

CPUIX and ACISX have a correlation of 0.88, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, CPUIX or ACISX?

CPUIX has higher volatility (1.55%) compared to ACISX (1.50%). In terms of maximum drawdown, CPUIX dropped -22.37% vs ACISX's -22.65%.

Which has better risk-adjusted returns?

ACISX currently has the higher Sharpe Ratio (1.64 vs 1.57), 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.