VSCSX vs. ACISX

Last updated Jun 4, 2026

VSCSX (Vanguard Short-Term Corporate Bond Index Fund Admiral Shares) and ACISX (AB Corporate Income Shares) are both Corporate Bonds funds. Over the past 10 years, VSCSX returned 2.73%/yr vs 3.04%/yr for ACISX. A 0.79 correlation means they provide meaningful diversification when combined. VSCSX charges 0.07%/yr vs 0.00%/yr for ACISX.

Performance

VSCSX vs. ACISX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Vanguard Short-Term Corporate Bond Index Fund Admiral Shares (VSCSX) 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, VSCSX achieves a 0.71% return, which is significantly lower than ACISX's 0.98% return. Over the past 10 years, VSCSX has underperformed ACISX with an annualized return of 2.73%, while ACISX has yielded a comparatively higher 3.04% annualized return.

VSCSX

• 1D: 0.00%
• 1M: 0.33%
• YTD: 0.71%
• 6M: 0.99%
• 1Y: 4.63%
• 3Y*: 5.66%
• 5Y*: 2.40%
• 10Y*: 2.73%

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)

VSCSX vs. ACISX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
VSCSX Vanguard Short-Term Corporate Bond Index Fund Admiral Shares	0.71%	6.75%	5.36%	6.11%	-5.72%	-0.43%	5.06%	6.85%	0.88%	2.46%
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 VSCSX and ACISX is 0.83, 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	0.83
Correlation (3Y) Calculated over the trailing 3-year period	0.85
Correlation (5Y) Calculated over the trailing 5-year period	0.84
Correlation (10Y) Calculated over the trailing 10-year period	0.79
Correlation (All Time) Calculated using the full available price history since Aug 8, 2012	0.79

The correlation between VSCSX and ACISX has been stable across timeframes, ranging from 0.79 to 0.85 - a consistent structural relationship.

Return for Risk

VSCSX vs. ACISX — Risk / Return Rank

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

VSCSX

VSCSX Risk / Return Rank: 80
VSCSX Sharpe Ratio Rank: 84
VSCSX Sortino Ratio Rank: 87
VSCSX Omega Ratio Rank: 83
VSCSX Calmar Ratio Rank: 76
VSCSX Martin Ratio Rank: 72

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.

VSCSX vs. ACISX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Vanguard Short-Term Corporate Bond Index Fund Admiral Shares (VSCSX) 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.

	VSCSX	ACISX	Difference
Sharpe ratio: Return per unit of total volatility	2.69	1.64	+1.05
Sortino ratio: Return per unit of downside risk	4.13	2.45	+1.68
Omega ratio: Gain probability vs. loss probability	1.55	1.30	+0.25
Calmar ratio: Return relative to maximum drawdown	3.44	2.15	+1.29
Martin ratio: Return relative to average drawdown	13.75	7.17	+6.57
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

VSCSX vs. ACISX - Sharpe Ratio Comparison

The current VSCSX Sharpe Ratio is 2.69, which is higher than the ACISX Sharpe Ratio of 1.64. The chart below compares the historical Sharpe Ratios of VSCSX 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

	VSCSX	ACISX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.69	1.64	+1.05
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.89	0.12	+0.77
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	1.16	0.51	+0.65
Sharpe Ratio (All Time) Calculated using the full available price history	1.36	0.58	+0.78

Drawdowns

VSCSX vs. ACISX - Drawdown Comparison

The maximum VSCSX drawdown since its inception was -9.36%, smaller than the maximum ACISX drawdown of -22.65%. Use the drawdown chart below to compare losses from any high point for VSCSX and ACISX.

Drawdown Indicators

	VSCSX	ACISX	Difference
Max Drawdown Largest peak-to-trough decline	-9.36%	-22.65%	+13.29%
Max Drawdown (1Y) Largest decline over 1 year	-1.36%	-3.26%	+1.90%
Max Drawdown (3Y) Largest decline over 3 years	-1.36%	-6.56%	+5.20%
Max Drawdown (5Y) Largest decline over 5 years	-9.36%	-22.65%	+13.29%
Max Drawdown (10Y) Largest decline over 10 years	-9.36%	-22.65%	+13.29%
Current Drawdown Current decline from peak	-0.26%	-0.81%	+0.55%
Average Drawdown Average peak-to-trough decline	-0.98%	-4.46%	+3.48%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.34%	0.98%	-0.64%

Volatility

VSCSX vs. ACISX - Volatility Comparison

The current volatility for Vanguard Short-Term Corporate Bond Index Fund Admiral Shares (VSCSX) is 0.57%, while AB Corporate Income Shares (ACISX) has a volatility of 1.50%. This indicates that VSCSX experiences smaller price fluctuations and is considered to be less risky than ACISX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	VSCSX	ACISX	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.57%	1.50%	-0.93%
Volatility (6M) Calculated over the trailing 6-month period	1.27%	3.16%	-1.89%
Volatility (1Y) Calculated over the trailing 1-year period	1.75%	4.30%	-2.55%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	2.71%	6.49%	-3.78%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	2.37%	6.00%	-3.63%

VSCSX vs. ACISX - Expense Ratio Comparison

VSCSX has a 0.07% expense ratio, which is higher than ACISX's 0.00% expense ratio. However, both funds are considered low-cost compared to the broader market, where average expense ratios usually range from 0.3% to 0.9%.

Dividends

VSCSX vs. ACISX - Dividend Comparison

VSCSX's dividend yield for the trailing twelve months is around 4.42%, 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%
VSCSX Vanguard Short-Term Corporate Bond Index Fund Admiral Shares	4.42%	4.32%	4.27%	3.07%	1.98%	1.78%	2.25%	2.85%	2.66%	2.26%	1.93%	2.21%

Frequently Asked Questions

Can I hold both VSCSX and ACISX in my portfolio?

VSCSX and ACISX have a correlation of 0.83, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, VSCSX or ACISX?

ACISX has higher volatility (1.50%) compared to VSCSX (0.57%). In terms of maximum drawdown, VSCSX dropped -9.36% vs ACISX's -22.65%.

Which has better risk-adjusted returns?

VSCSX currently has the higher Sharpe Ratio (2.69 vs 1.64), 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.