HYMU vs. PMMF

Last updated Jun 5, 2026

HYMU (BlackRock High Yield Muni Income Bond ETF) and PMMF (iShares Prime Money Market ETF) are both exchange-traded funds - HYMU is a High Yield Muni fund actively managed by BlackRock, while PMMF is a Money Market fund actively managed by BlackRock. Both are actively managed. HYMU charges 0.35%/yr vs 0.20%/yr for PMMF.

Performance

HYMU vs. PMMF - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in BlackRock High Yield Muni Income Bond ETF (HYMU) and iShares Prime Money Market ETF (PMMF). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

HYMU

• 1D: 0.00%
• 1M: —
• YTD: —
• 6M: —
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

PMMF

• 1D: 0.01%
• 1M: 0.28%
• YTD: 1.53%
• 6M: 1.81%
• 1Y: 4.00%
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

HYMU vs. PMMF - Yearly Performance Comparison

	2026 (YTD)
HYMU BlackRock High Yield Muni Income Bond ETF	0.00%
PMMF iShares Prime Money Market ETF	0.07%

Return for Risk

HYMU vs. PMMF — Risk / Return Rank

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

PMMF

PMMF Risk / Return Rank: 100
PMMF Sharpe Ratio Rank: 100
PMMF Sortino Ratio Rank: 100
PMMF Omega Ratio Rank: 100
PMMF Calmar Ratio Rank: 100
PMMF Martin Ratio Rank: 100

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.

HYMU vs. PMMF - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for BlackRock High Yield Muni Income Bond ETF (HYMU) and iShares Prime Money Market ETF (PMMF). 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

	HYMU	PMMF	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	—	19.72	—
Sharpe Ratio (All Time) Calculated using the full available price history	—	11.98	—

Drawdowns

HYMU vs. PMMF - Drawdown Comparison

The maximum HYMU drawdown since its inception was 0.00%, smaller than the maximum PMMF drawdown of -0.13%. Use the drawdown chart below to compare losses from any high point for HYMU and PMMF.

Drawdown Indicators

	HYMU	PMMF	Difference
Max Drawdown Largest peak-to-trough decline	0.00%	-0.13%	+0.13%
Max Drawdown (1Y) Largest decline over 1 year	—	-0.02%	—
Current Drawdown Current decline from peak	0.00%	0.00%	0.00%
Average Drawdown Average peak-to-trough decline	0.00%	-0.00%	0.00%
Ulcer Index Depth and duration of drawdowns from previous peaks	—	0.00%	—

Volatility

Volatility by Period

	HYMU	PMMF	Difference
Volatility (1M) Calculated over the trailing 1-month period	—	0.05%	—
Volatility (6M) Calculated over the trailing 6-month period	—	0.12%	—
Volatility (1Y) Calculated over the trailing 1-year period	0.00%	0.20%	-0.20%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	0.00%	0.34%	-0.34%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	0.00%	0.34%	-0.34%

HYMU vs. PMMF - Expense Ratio Comparison

HYMU has a 0.35% expense ratio, which is higher than PMMF's 0.20% expense ratio.

Dividends

HYMU vs. PMMF - Dividend Comparison

HYMU has not paid dividends to shareholders, while PMMF's dividend yield for the trailing twelve months is around 3.83%.

Position	TTM	2025
HYMU BlackRock High Yield Muni Income Bond ETF	0.00%	0.00%
PMMF iShares Prime Money Market ETF	3.83%	3.59%

Frequently Asked Questions

Which ETF is better, HYMU or PMMF?

On fees, PMMF is cheaper at 0.20% per year. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF is cheaper, HYMU or PMMF?

PMMF is cheaper with a 0.20% expense ratio, compared with 0.35% for HYMU.

Which ETF pays a higher dividend yield, HYMU or PMMF?

PMMF has the higher dividend yield at 3.83%, compared with 0.00% for HYMU.

What is the main difference between HYMU and PMMF?

HYMU is categorized as High Yield Muni, while PMMF is Money Market. Their fees differ too: 0.35% for HYMU and 0.20% for PMMF.