CORB vs. TAFM

Last updated Jul 14, 2026

CORB (AB Core Bond ETF) and TAFM (AB Tax-Aware Intermediate Municipal ETF) are both exchange-traded funds - CORB is a Intermediate Core Bond fund actively managed by AllianceBernstein, while TAFM is a Municipal Bonds fund actively managed by AllianceBernstein. Both are actively managed. A 0.59 correlation means they provide meaningful diversification when combined. Both charge a 0.28% expense ratio.

Performance

CORB vs. TAFM - Performance Comparison

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

Returns By Period

In the year-to-date period, CORB achieves a -0.50% return, which is significantly lower than TAFM's 2.13% return.

CORB

• 1D: -0.44%
• 1M: -0.66%
• 6M: -0.62%
• YTD: -0.50%
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

TAFM

• 1D: -0.12%
• 1M: 0.22%
• 6M: 1.59%
• YTD: 2.13%
• 1Y: 6.81%
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

CORB vs. TAFM - Yearly Performance Comparison

	2026 (YTD)	2025
CORB AB Core Bond ETF	-0.50%	0.41%
TAFM AB Tax-Aware Intermediate Municipal ETF	2.13%	0.18%

Correlation

The correlation between CORB and TAFM is 0.59, which is moderate. They share some common price drivers but move independently often enough to provide real diversification benefit when combined.

	Correlation
Correlation (All Time) Calculated using the full available price history since Nov 10, 2025	0.59

Return for Risk

CORB vs. TAFM — Risk / Return Rank

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

CORB

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

TAFM

TAFM Risk / Return Rank: 79
TAFM Sharpe Ratio Rank: 87
TAFM Sortino Ratio Rank: 88
TAFM Omega Ratio Rank: 90
TAFM Calmar Ratio Rank: 64
TAFM Martin Ratio Rank: 65

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. TAFM - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for AB Core Bond ETF (CORB) and AB Tax-Aware Intermediate Municipal ETF (TAFM). 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.

Values are calculated on a 1-year rolling basis and updated daily. Risk-adjusted metrics are more stable over longer periods — use the period switch above to explore them.

	CORB	TAFM	Difference
Sharpe ratio: Return per unit of total volatility	—	2.23	—
Sortino ratio: Return per unit of downside risk	—	3.22	—
Omega ratio: Gain probability vs. loss probability	—	1.45	—
Calmar ratio: Return relative to maximum drawdown	—	2.54	—
Martin ratio: Return relative to average drawdown	—	9.33	—

Drawdowns

CORB vs. TAFM - Drawdown Comparison

The maximum CORB drawdown since its inception was -3.08%, smaller than the maximum TAFM drawdown of -4.74%. Use the drawdown chart below to compare losses from any high point for CORB and TAFM.

Drawdown Indicators

	CORB	TAFM	Difference
Max Drawdown Largest peak-to-trough decline	-3.08%	-4.74%	+1.66%
Max Drawdown (1Y) Largest decline over 1 year	—	-2.69%	—
Current Drawdown Current decline from peak	-2.28%	-0.45%	-1.83%
Average Drawdown Average peak-to-trough decline	-1.08%	-0.92%	-0.16%
Ulcer Index Depth and duration of drawdowns from previous peaks	—	0.73%	—

Volatility

Volatility by Period

	CORB	TAFM	Difference
Volatility (1M) Calculated over the trailing 1-month period	—	0.65%	—
Volatility (6M) Calculated over the trailing 6-month period	—	2.09%	—
Volatility (1Y) Calculated over the trailing 1-year period	4.10%	3.07%	+1.03%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	4.10%	4.87%	-0.77%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	4.10%	4.87%	-0.77%

CORB vs. TAFM - Expense Ratio Comparison

Both CORB and TAFM have an expense ratio of 0.28%.

Dividends

CORB vs. TAFM - Dividend Comparison

CORB's dividend yield for the trailing twelve months is around 2.76%, less than TAFM's 3.63% yield.

Position	TTM	2025	2024	2023
CORB AB Core Bond ETF	2.76%	0.81%	0.00%	0.00%
TAFM AB Tax-Aware Intermediate Municipal ETF	3.63%	3.51%	3.35%	0.18%

Frequently Asked Questions

Can I hold both CORB and TAFM in my portfolio?

CORB and TAFM have a correlation of 0.59, 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 TAFM?

Both ETFs have the same 0.28% expense ratio. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF is cheaper, CORB or TAFM?

CORB and TAFM have the same expense ratio: 0.28% per year.

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

TAFM has the higher dividend yield at 3.63%, compared with 2.76% for CORB.

What is the main difference between CORB and TAFM?

CORB is categorized as Intermediate Core Bond, while TAFM is Municipal Bonds.