CORB vs. FCBD

Last updated Jun 3, 2026

CORB (AB Core Bond ETF) and FCBD (Frontier Asset Core Bond ETF) are both Intermediate Core Bond funds. Both are actively managed. Their correlation of 0.89 suggests significant overlap in exposure. CORB charges 0.28%/yr vs 0.90%/yr for FCBD.

Performance

CORB vs. FCBD - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in AB Core Bond ETF (CORB) and Frontier Asset Core Bond ETF (FCBD). 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 lower than FCBD's 0.38% return.

CORB

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

FCBD

• 1D: 0.22%
• 1M: -0.00%
• YTD: 0.38%
• 6M: 0.60%
• 1Y: 4.32%
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

CORB vs. FCBD - Yearly Performance Comparison

	2026 (YTD)	2025
CORB AB Core Bond ETF	0.12%	0.21%
FCBD Frontier Asset Core Bond ETF	0.38%	0.58%

Correlation

The correlation between CORB and FCBD is 0.89, indicating a strong positive relationship between their price movements. Combining them offers limited diversification - they tend to fall together during downturns.

	Correlation
Correlation (All Time) Calculated using the full available price history since Nov 11, 2025	0.89

Return for Risk

CORB vs. FCBD — Risk / Return Rank

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

FCBD

FCBD Risk / Return Rank: 52
FCBD Sharpe Ratio Rank: 53
FCBD Sortino Ratio Rank: 57
FCBD Omega Ratio Rank: 53
FCBD Calmar Ratio Rank: 50
FCBD Martin Ratio Rank: 47

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. FCBD - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for AB Core Bond ETF (CORB) and Frontier Asset Core Bond ETF (FCBD). 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	FCBD	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	—	1.85	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.16	1.80	-1.64

Drawdowns

CORB vs. FCBD - Drawdown Comparison

The maximum CORB drawdown since its inception was -3.08%, which is greater than FCBD's maximum drawdown of -1.64%. Use the drawdown chart below to compare losses from any high point for CORB and FCBD.

Drawdown Indicators

	CORB	FCBD	Difference
Max Drawdown Largest peak-to-trough decline	-3.08%	-1.64%	-1.44%
Max Drawdown (1Y) Largest decline over 1 year	—	-1.64%	—
Current Drawdown Current decline from peak	-1.67%	-0.82%	-0.85%
Average Drawdown Average peak-to-trough decline	-0.98%	-0.35%	-0.63%
Ulcer Index Depth and duration of drawdowns from previous peaks	—	0.53%	—

Volatility

Volatility by Period

	CORB	FCBD	Difference
Volatility (1M) Calculated over the trailing 1-month period	—	0.87%	—
Volatility (6M) Calculated over the trailing 6-month period	—	1.74%	—
Volatility (1Y) Calculated over the trailing 1-year period	3.96%	2.35%	+1.61%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	3.96%	2.60%	+1.36%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	3.96%	2.60%	+1.36%

CORB vs. FCBD - Expense Ratio Comparison

CORB has a 0.28% expense ratio, which is lower than FCBD's 0.90% expense ratio.

Dividends

CORB vs. FCBD - Dividend Comparison

CORB's dividend yield for the trailing twelve months is around 2.40%, less than FCBD's 4.22% yield.

Position	TTM	2025	2024
CORB AB Core Bond ETF	2.40%	0.81%	0.00%
FCBD Frontier Asset Core Bond ETF	4.22%	4.34%	0.08%

Frequently Asked Questions

Can I hold both CORB and FCBD in my portfolio?

CORB and FCBD have a correlation of 0.89, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which ETF is better, CORB or FCBD?

On fees, CORB is cheaper at 0.28% per year. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF is cheaper, CORB or FCBD?

CORB is cheaper with a 0.28% expense ratio, compared with 0.90% for FCBD.

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

FCBD has the higher dividend yield at 4.22%, compared with 2.40% for CORB.

What is the main difference between CORB and FCBD?

They also come from different issuers: AllianceBernstein and Frontier. Their fees differ too: 0.28% for CORB and 0.90% for FCBD.