CORB vs. BIV

Last updated Jun 3, 2026

CORB (AB Core Bond ETF) and BIV (Vanguard Intermediate-Term Bond Index ETF) are both Intermediate Core Bond funds. CORB is actively managed, while BIV is passively managed. With a 0.96 correlation, they move nearly in lockstep. CORB charges 0.28%/yr vs 0.03%/yr for BIV.

Performance

CORB vs. BIV - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in AB Core Bond ETF (CORB) and Vanguard Intermediate-Term Bond Index ETF (BIV). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, CORB achieves a 0.12% return, which is significantly higher than BIV's -0.02% return.

CORB

• 1D: 0.03%
• 1M: -0.05%
• YTD: 0.12%
• 6M: 0.19%
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

BIV

• 1D: 0.08%
• 1M: -0.04%
• YTD: -0.02%
• 6M: -0.05%
• 1Y: 5.02%
• 3Y*: 4.34%
• 5Y*: 0.39%
• 10Y*: 1.94%

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

CORB vs. BIV - Yearly Performance Comparison

	2026 (YTD)	2025
CORB AB Core Bond ETF	0.12%	0.21%
BIV Vanguard Intermediate-Term Bond Index ETF	-0.02%	0.54%

Correlation

The correlation between CORB and BIV is 0.96 - these two move nearly in lockstep. At this level, holding both provides almost no diversification benefit. If you already own one, adding the other does little to reduce portfolio risk.

	Correlation
Correlation (All Time) Calculated using the full available price history since Nov 11, 2025	0.96

Return for Risk

CORB vs. BIV — Risk / Return Rank

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

BIV

BIV Risk / Return Rank: 32
BIV Sharpe Ratio Rank: 34
BIV Sortino Ratio Rank: 35
BIV Omega Ratio Rank: 32
BIV Calmar Ratio Rank: 30
BIV Martin Ratio Rank: 31

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.

CORB vs. BIV - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for AB Core Bond ETF (CORB) and Vanguard Intermediate-Term Bond Index ETF (BIV). 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.

Risk / return metrics aren't available yet — we need at least 12 months of trading data to calculate them.

Sharpe Ratios by Period

	CORB	BIV	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	—	1.24	—
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	—	0.06	—
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	—	0.35	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.16	0.65	-0.49

Drawdowns

CORB vs. BIV - Drawdown Comparison

The maximum CORB drawdown since its inception was -3.08%, smaller than the maximum BIV drawdown of -18.95%. Use the drawdown chart below to compare losses from any high point for CORB and BIV.

Drawdown Indicators

	CORB	BIV	Difference
Max Drawdown Largest peak-to-trough decline	-3.08%	-18.95%	+15.87%
Max Drawdown (1Y) Largest decline over 1 year	—	-3.18%	—
Max Drawdown (3Y) Largest decline over 3 years	—	-6.07%	—
Max Drawdown (5Y) Largest decline over 5 years	—	-18.74%	—
Max Drawdown (10Y) Largest decline over 10 years	—	-18.95%	—
Current Drawdown Current decline from peak	-1.67%	-1.82%	+0.15%
Average Drawdown Average peak-to-trough decline	-0.98%	-3.39%	+2.41%
Ulcer Index Depth and duration of drawdowns from previous peaks	—	1.04%	—

Volatility

Volatility by Period

	CORB	BIV	Difference
Volatility (1M) Calculated over the trailing 1-month period	—	1.38%	—
Volatility (6M) Calculated over the trailing 6-month period	—	2.92%	—
Volatility (1Y) Calculated over the trailing 1-year period	3.96%	4.06%	-0.10%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	3.96%	6.40%	-2.44%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	3.96%	5.50%	-1.54%

CORB vs. BIV - Expense Ratio Comparison

CORB has a 0.28% expense ratio, which is higher than BIV's 0.03% expense ratio.

Dividends

CORB vs. BIV - Dividend Comparison

CORB's dividend yield for the trailing twelve months is around 2.40%, less than BIV's 4.21% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
BIV Vanguard Intermediate-Term Bond Index ETF	4.21%	4.01%	3.79%	3.09%	2.41%	3.42%	2.95%	2.75%	2.88%	2.69%	3.01%	3.02%
CORB AB Core Bond ETF	2.40%	0.81%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%

Frequently Asked Questions

Can I hold both CORB and BIV in my portfolio?

With a correlation of 0.96, CORB and BIV 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 ETF is better, CORB or BIV?

On fees, BIV is cheaper at 0.03% per year. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF is cheaper, CORB or BIV?

BIV is cheaper with a 0.03% expense ratio, compared with 0.28% for CORB.

Which ETF pays a higher dividend yield, CORB or BIV?

BIV has the higher dividend yield at 4.21%, compared with 2.40% for CORB.

What is the main difference between CORB and BIV?

They also come from different issuers: AllianceBernstein and Vanguard. Their fees differ too: 0.28% for CORB and 0.03% for BIV.