PBDCX vs. ACISX

Last updated Jun 4, 2026

PBDCX (PIMCO Investment Grade Credit Bond Fund Class C) and ACISX (AB Corporate Income Shares) are both Corporate Bonds funds. Over the past 10 years, PBDCX returned 1.72%/yr vs 3.04%/yr for ACISX. Their correlation of 0.92 suggests significant overlap in exposure. PBDCX charges 2.19%/yr vs 0.00%/yr for ACISX.

Performance

PBDCX vs. ACISX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in PIMCO Investment Grade Credit Bond Fund Class C (PBDCX) 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, PBDCX achieves a 0.03% return, which is significantly lower than ACISX's 0.98% return. Over the past 10 years, PBDCX has underperformed ACISX with an annualized return of 1.72%, while ACISX has yielded a comparatively higher 3.04% annualized return.

PBDCX

• 1D: 0.00%
• 1M: 0.77%
• YTD: 0.03%
• 6M: -0.19%
• 1Y: 5.25%
• 3Y*: 4.45%
• 5Y*: -0.46%
• 10Y*: 1.72%

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)

PBDCX vs. ACISX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
PBDCX PIMCO Investment Grade Credit Bond Fund Class C	0.03%	7.27%	2.10%	6.82%	-17.38%	-2.01%	6.29%	13.44%	-3.12%	6.73%
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 PBDCX and ACISX is 0.95, 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	0.95
Correlation (3Y) Calculated over the trailing 3-year period	0.96
Correlation (5Y) Calculated over the trailing 5-year period	0.96
Correlation (10Y) Calculated over the trailing 10-year period	0.94
Correlation (All Time) Calculated using the full available price history since Aug 8, 2012	0.92

The correlation between PBDCX and ACISX has been stable across timeframes, ranging from 0.92 to 0.96 - a consistent structural relationship.

Return for Risk

PBDCX vs. ACISX — Risk / Return Rank

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

PBDCX

PBDCX Risk / Return Rank: 16
PBDCX Sharpe Ratio Rank: 17
PBDCX Sortino Ratio Rank: 17
PBDCX Omega Ratio Rank: 17
PBDCX Calmar Ratio Rank: 15
PBDCX Martin Ratio Rank: 15

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.

PBDCX vs. ACISX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for PIMCO Investment Grade Credit Bond Fund Class C (PBDCX) 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.

	PBDCX	ACISX	Difference
Sharpe ratio Return per unit of total volatility	1.17	1.64	-0.47
Sortino ratio Return per unit of downside risk	1.69	2.45	-0.75
Omega ratio Gain probability vs. loss probability	1.21	1.30	-0.09
Calmar ratio Return relative to maximum drawdown	1.36	2.15	-0.79
Martin ratio Return relative to average drawdown	4.27	7.17	-2.91
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

PBDCX vs. ACISX - Sharpe Ratio Comparison

The current PBDCX Sharpe Ratio is 1.17, which is comparable to the ACISX Sharpe Ratio of 1.64. The chart below compares the historical Sharpe Ratios of PBDCX 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

	PBDCX	ACISX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.17	1.64	-0.47
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	-0.07	0.12	-0.19
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.30	0.51	-0.21
Sharpe Ratio (All Time) Calculated using the full available price history	0.73	0.58	+0.15

Drawdowns

PBDCX vs. ACISX - Drawdown Comparison

The maximum PBDCX drawdown since its inception was -23.73%, roughly equal to the maximum ACISX drawdown of -22.65%. Use the drawdown chart below to compare losses from any high point for PBDCX and ACISX.

Drawdown Indicators

	PBDCX	ACISX	Difference
Max Drawdown Largest peak-to-trough decline	-23.73%	-22.65%	-1.08%
Max Drawdown (1Y) Largest decline over 1 year	-3.98%	-3.26%	-0.72%
Max Drawdown (3Y) Largest decline over 3 years	-6.87%	-6.56%	-0.31%
Max Drawdown (5Y) Largest decline over 5 years	-23.70%	-22.65%	-1.05%
Max Drawdown (10Y) Largest decline over 10 years	-23.73%	-22.65%	-1.08%
Current Drawdown Current decline from peak	-5.25%	-0.81%	-4.44%
Average Drawdown Average peak-to-trough decline	-4.01%	-4.46%	+0.45%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.26%	0.98%	+0.28%

Volatility

PBDCX vs. ACISX - Volatility Comparison

PIMCO Investment Grade Credit Bond Fund Class C (PBDCX) has a higher volatility of 1.64% compared to AB Corporate Income Shares (ACISX) at 1.50%. This indicates that PBDCX's price experiences larger fluctuations and is considered to be riskier than ACISX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	PBDCX	ACISX	Difference
Volatility (1M) Calculated over the trailing 1-month period	1.64%	1.50%	+0.14%
Volatility (6M) Calculated over the trailing 6-month period	3.57%	3.16%	+0.41%
Volatility (1Y) Calculated over the trailing 1-year period	4.63%	4.30%	+0.33%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	6.36%	6.49%	-0.13%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	5.74%	6.00%	-0.26%

PBDCX vs. ACISX - Expense Ratio Comparison

PBDCX has a 2.19% expense ratio, which is higher than ACISX's 0.00% expense ratio.

Dividends

PBDCX vs. ACISX - Dividend Comparison

PBDCX's dividend yield for the trailing twelve months is around 3.70%, 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%
PBDCX PIMCO Investment Grade Credit Bond Fund Class C	3.70%	3.55%	3.21%	2.45%	2.46%	3.48%	2.69%	2.82%	3.04%	3.33%	2.76%	5.47%

Frequently Asked Questions

Can I hold both PBDCX and ACISX in my portfolio?

With a correlation of 0.95, PBDCX and ACISX move almost identically. Holding both adds very little diversification - you're essentially doubling your position in the same market segment. Choosing one is usually more capital-efficient.

Which is riskier, PBDCX or ACISX?

PBDCX has higher volatility (1.64%) compared to ACISX (1.50%). In terms of maximum drawdown, PBDCX dropped -23.73% vs ACISX's -22.65%.

Which has better risk-adjusted returns?

ACISX currently has the higher Sharpe Ratio (1.64 vs 1.17), 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.