BKMI vs. ZMUN

Last updated Jun 4, 2026

BKMI (BNY Mellon Municipal Intermediate ETF) and ZMUN (F/m Ultrashort Tax-Free Municipal ETF) are both Municipal Bonds funds. BKMI is actively managed, while ZMUN is passively managed. At a 0.15 correlation, their price movements are largely independent. BKMI charges 0.35%/yr vs 0.30%/yr for ZMUN.

Performance

BKMI vs. ZMUN - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in BNY Mellon Municipal Intermediate ETF (BKMI) and F/m Ultrashort Tax-Free Municipal ETF (ZMUN). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

BKMI

• 1D: -0.06%
• 1M: 0.49%
• YTD: —
• 6M: —
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

ZMUN

• 1D: -0.02%
• 1M: 0.21%
• YTD: 1.57%
• 6M: 1.86%
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

BKMI vs. ZMUN - Yearly Performance Comparison

	2026 (YTD)
BKMI BNY Mellon Municipal Intermediate ETF	0.26%
ZMUN F/m Ultrashort Tax-Free Municipal ETF	1.48%

Correlation

The correlation between BKMI and ZMUN is 0.15, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (All Time) Calculated using the full available price history since Jan 13, 2026	0.15

Return for Risk

BKMI vs. ZMUN - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for BNY Mellon Municipal Intermediate ETF (BKMI) and F/m Ultrashort Tax-Free Municipal ETF (ZMUN). 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

	BKMI	ZMUN	Difference
Sharpe Ratio (All Time) Calculated using the full available price history	0.23	6.46	-6.23

Drawdowns

BKMI vs. ZMUN - Drawdown Comparison

The maximum BKMI drawdown since its inception was -2.99%, which is greater than ZMUN's maximum drawdown of -0.09%. Use the drawdown chart below to compare losses from any high point for BKMI and ZMUN.

Drawdown Indicators

	BKMI	ZMUN	Difference
Max Drawdown Largest peak-to-trough decline	-2.99%	-0.09%	-2.90%
Current Drawdown Current decline from peak	-1.23%	-0.02%	-1.21%
Average Drawdown Average peak-to-trough decline	-1.17%	-0.01%	-1.16%

Volatility

Volatility by Period

	BKMI	ZMUN	Difference
Volatility (1Y) Calculated over the trailing 1-year period	2.88%	0.54%	+2.34%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	2.88%	0.54%	+2.34%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	2.88%	0.54%	+2.34%

BKMI vs. ZMUN - Expense Ratio Comparison

BKMI has a 0.35% expense ratio, which is higher than ZMUN's 0.30% expense ratio.

Dividends

BKMI vs. ZMUN - Dividend Comparison

BKMI's dividend yield for the trailing twelve months is around 0.98%, less than ZMUN's 2.28% yield.

Position	TTM	2025
BKMI BNY Mellon Municipal Intermediate ETF	0.98%	0.00%
ZMUN F/m Ultrashort Tax-Free Municipal ETF	2.28%	0.70%

Frequently Asked Questions

Can I hold both BKMI and ZMUN in my portfolio?

BKMI and ZMUN have a correlation of 0.15, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which ETF is better, BKMI or ZMUN?

On fees, ZMUN is cheaper at 0.30% per year. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF is cheaper, BKMI or ZMUN?

ZMUN is cheaper with a 0.30% expense ratio, compared with 0.35% for BKMI.

Which ETF pays a higher dividend yield, BKMI or ZMUN?

ZMUN has the higher dividend yield at 2.28%, compared with 0.98% for BKMI.

What is the main difference between BKMI and ZMUN?

They also come from different issuers: BNY Mellon and F/m Investments. Their fees differ too: 0.35% for BKMI and 0.30% for ZMUN.