PMMF vs. IBIH

Last updated Jun 5, 2026

PMMF (iShares Prime Money Market ETF) and IBIH (iShares iBonds Oct 2031 Term TIPS ETF) are both exchange-traded funds - PMMF is a Money Market fund actively managed by BlackRock, while IBIH is a Inflation-Protected Bonds fund tracking the ICE 2031 Maturity US Inflation-Linked Treasury Index. PMMF is actively managed, while IBIH is passively managed. Over the past year, PMMF returned 4.00% vs 5.04% for IBIH. At a correlation of -0.06, they often move in opposite directions. PMMF charges 0.20%/yr vs 0.10%/yr for IBIH.

Performance

PMMF vs. IBIH - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in iShares Prime Money Market ETF (PMMF) and iShares iBonds Oct 2031 Term TIPS ETF (IBIH). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

The year-to-date returns for both investments are quite close, with PMMF having a 1.53% return and IBIH slightly higher at 1.60%.

PMMF

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

IBIH

• 1D: -0.08%
• 1M: -0.34%
• YTD: 1.60%
• 6M: 1.34%
• 1Y: 5.04%
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

PMMF vs. IBIH - Yearly Performance Comparison

	2026 (YTD)	2025
PMMF iShares Prime Money Market ETF	1.53%	3.85%
IBIH iShares iBonds Oct 2031 Term TIPS ETF	1.60%	6.36%

Correlation

The correlation between PMMF and IBIH is -0.07, meaning there is essentially no relationship between their price movements. Each responds to its own set of market drivers, making them strong candidates for combining in a diversified portfolio.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	-0.07
Correlation (All Time) Calculated using the full available price history since Feb 7, 2025	-0.06

Return for Risk

PMMF vs. IBIH — 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

IBIH

IBIH Risk / Return Rank: 53
IBIH Sharpe Ratio Rank: 47
IBIH Sortino Ratio Rank: 53
IBIH Omega Ratio Rank: 47
IBIH Calmar Ratio Rank: 61
IBIH Martin Ratio Rank: 58

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.

PMMF vs. IBIH - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for iShares Prime Money Market ETF (PMMF) and iShares iBonds Oct 2031 Term TIPS ETF (IBIH). 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.

	PMMF	IBIH	Difference
Sharpe ratio: Return per unit of total volatility	19.72	1.62	+18.10
Sortino ratio: Return per unit of downside risk	95.22	2.51	+92.72
Omega ratio: Gain probability vs. loss probability	38.37	1.29	+37.08
Calmar ratio: Return relative to maximum drawdown	161.17	2.98	+158.19
Martin ratio: Return relative to average drawdown	1,488.23	10.16	+1,478.07
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

PMMF vs. IBIH - Sharpe Ratio Comparison

The current PMMF Sharpe Ratio is 19.72, which is higher than the IBIH Sharpe Ratio of 1.62. The chart below compares the historical Sharpe Ratios of PMMF and IBIH, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Sharpe Ratios by Period

	PMMF	IBIH	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	19.72	1.62	+18.10
Sharpe Ratio (All Time) Calculated using the full available price history	11.98	1.24	+10.73

Drawdowns

PMMF vs. IBIH - Drawdown Comparison

The maximum PMMF drawdown since its inception was -0.13%, smaller than the maximum IBIH drawdown of -3.94%. Use the drawdown chart below to compare losses from any high point for PMMF and IBIH.

Drawdown Indicators

	PMMF	IBIH	Difference
Max Drawdown Largest peak-to-trough decline	-0.13%	-3.94%	+3.81%
Max Drawdown (1Y) Largest decline over 1 year	-0.02%	-1.70%	+1.68%
Current Drawdown Current decline from peak	0.00%	-0.62%	+0.62%
Average Drawdown Average peak-to-trough decline	-0.00%	-0.96%	+0.96%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.00%	0.51%	-0.51%

Volatility

PMMF vs. IBIH - Volatility Comparison

The current volatility for iShares Prime Money Market ETF (PMMF) is 0.05%, while iShares iBonds Oct 2031 Term TIPS ETF (IBIH) has a volatility of 0.83%. This indicates that PMMF experiences smaller price fluctuations and is considered to be less risky than IBIH based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	PMMF	IBIH	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.05%	0.83%	-0.78%
Volatility (6M) Calculated over the trailing 6-month period	0.12%	2.09%	-1.97%
Volatility (1Y) Calculated over the trailing 1-year period	0.20%	3.15%	-2.95%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	0.34%	4.93%	-4.59%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	0.34%	4.93%	-4.59%

PMMF vs. IBIH - Expense Ratio Comparison

PMMF has a 0.20% expense ratio, which is higher than IBIH's 0.10% expense ratio. However, both funds are considered low-cost compared to the broader market, where average expense ratios usually range from 0.3% to 0.9%.

Dividends

PMMF vs. IBIH - Dividend Comparison

PMMF's dividend yield for the trailing twelve months is around 3.83%, less than IBIH's 3.90% yield.

Position	TTM	2025	2024	2023
IBIH iShares iBonds Oct 2031 Term TIPS ETF	3.90%	4.68%	4.34%	0.70%
PMMF iShares Prime Money Market ETF	3.83%	3.59%	0.00%	0.00%

Frequently Asked Questions

Can I hold both PMMF and IBIH in my portfolio?

PMMF and IBIH have a correlation of -0.07, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, PMMF or IBIH?

IBIH has higher volatility (0.83%) compared to PMMF (0.05%). In terms of maximum drawdown, PMMF dropped -0.13% vs IBIH's -3.94%.

Which ETF is better, PMMF or IBIH?

On 1-year performance, IBIH leads with 5.04% vs 4.00% for PMMF. On fees, IBIH is cheaper at 0.10% per year. On volatility, PMMF has been the lower-risk option at 0.05%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, PMMF or IBIH?

Over the 1-year period, IBIH has performed better with a 5.04% return vs 4.00%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, PMMF or IBIH?

IBIH is cheaper with a 0.10% expense ratio, compared with 0.20% for PMMF.

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

IBIH has the higher dividend yield at 3.90%, compared with 3.83% for PMMF.

What is the main difference between PMMF and IBIH?

PMMF is categorized as Money Market, while IBIH is Inflation-Protected Bonds. They also come from different issuers: BlackRock and iShares. Their fees differ too: 0.20% for PMMF and 0.10% for IBIH.

Which has better risk-adjusted returns?

PMMF currently has the higher Sharpe Ratio (19.72 vs 1.62), meaning it's delivered slightly more return per unit of risk over the trailing 12 months. However, this ranking shifts over time - use the Risk/Return Score above for a more comprehensive view that combines Sharpe, Sortino, and other measures used by quantitative funds.