IBMT vs. IBMM

Last updated Jun 4, 2026

IBMT (iShares iBonds Dec 2031 Term Muni Bond ETF) and IBMM (iShares iBonds Dec 2024 Term Muni Bond ETF) are both Municipal Bonds funds from iShares - IBMT tracks the S&P AMT-Free Municipal Series Dec 2031 Index while IBMM tracks the S&P AMT-Free Municipal Series Dec 2024 Index. Both are passively managed. Both charge a 0.18% expense ratio.

Performance

IBMT vs. IBMM - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in iShares iBonds Dec 2031 Term Muni Bond ETF (IBMT) and iShares iBonds Dec 2024 Term Muni Bond ETF (IBMM). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

IBMT

• 1D: -0.02%
• 1M: 0.35%
• YTD: 0.19%
• 6M: 0.25%
• 1Y: 6.34%
• 3Y*: —
• 5Y*: —
• 10Y*: —

IBMM

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

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

IBMT vs. IBMM - Yearly Performance Comparison

	2026 (YTD)
IBMT iShares iBonds Dec 2031 Term Muni Bond ETF	-1.01%
IBMM iShares iBonds Dec 2024 Term Muni Bond ETF	0.00%

Return for Risk

IBMT vs. IBMM — Risk / Return Rank

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

IBMT

IBMT Risk / Return Rank: 60
IBMT Sharpe Ratio Rank: 62
IBMT Sortino Ratio Rank: 76
IBMT Omega Ratio Rank: 78
IBMT Calmar Ratio Rank: 43
IBMT Martin Ratio Rank: 39

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.

IBMT vs. IBMM - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for iShares iBonds Dec 2031 Term Muni Bond ETF (IBMT) and iShares iBonds Dec 2024 Term Muni Bond ETF (IBMM). 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.

	IBMT	IBMM	Difference
Sharpe ratio: Return per unit of total volatility	2.05	—	—
Sortino ratio: Return per unit of downside risk	3.38	—	—
Omega ratio: Gain probability vs. loss probability	1.46	—	—
Calmar ratio: Return relative to maximum drawdown	2.06	—	—
Martin ratio: Return relative to average drawdown	6.13	—	—
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

Sharpe Ratios by Period

	IBMT	IBMM	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.05	—	—
Sharpe Ratio (All Time) Calculated using the full available price history	1.63	—	—

Drawdowns

IBMT vs. IBMM - Drawdown Comparison

The maximum IBMT drawdown since its inception was -3.18%, which is greater than IBMM's maximum drawdown of 0.00%. Use the drawdown chart below to compare losses from any high point for IBMT and IBMM.

Drawdown Indicators

	IBMT	IBMM	Difference
Max Drawdown Largest peak-to-trough decline	-3.18%	0.00%	-3.18%
Max Drawdown (1Y) Largest decline over 1 year	-3.10%	—	—
Current Drawdown Current decline from peak	-1.65%	0.00%	-1.65%
Average Drawdown Average peak-to-trough decline	-0.74%	0.00%	-0.74%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.04%	—	—

Volatility

Volatility by Period

	IBMT	IBMM	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.78%	—	—
Volatility (6M) Calculated over the trailing 6-month period	2.06%	—	—
Volatility (1Y) Calculated over the trailing 1-year period	3.11%	0.00%	+3.11%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	3.86%	0.00%	+3.86%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	3.86%	0.00%	+3.86%

IBMT vs. IBMM - Expense Ratio Comparison

Both IBMT and IBMM have an expense ratio of 0.18%, making them cost-effective options compared to the broader market, where average expense ratios typically range from 0.3% to 0.9%.

Dividends

IBMT vs. IBMM - Dividend Comparison

IBMT's dividend yield for the trailing twelve months is around 3.65%, while IBMM has not paid dividends to shareholders.

Position	TTM	2025
IBMM iShares iBonds Dec 2024 Term Muni Bond ETF	0.00%	0.00%
IBMT iShares iBonds Dec 2031 Term Muni Bond ETF	3.65%	2.98%

Frequently Asked Questions

Which ETF is better, IBMT or IBMM?

Both ETFs have the same 0.18% expense ratio. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF is cheaper, IBMT or IBMM?

IBMT and IBMM have the same expense ratio: 0.18% per year.

Which ETF pays a higher dividend yield, IBMT or IBMM?

IBMT has the higher dividend yield at 3.65%, compared with 0.00% for IBMM.

What is the main difference between IBMT and IBMM?

IBMT tracks S&P AMT-Free Municipal Series Dec 2031 Index, while IBMM tracks S&P AMT-Free Municipal Series Dec 2024 Index.