SMBS vs. IBTF

Last updated Apr 1, 2026

Compare and contrast key facts about Schwab Mortgage-Backed Securities ETF (SMBS) and iShares iBonds Dec 2025 Term Treasury ETF (IBTF).

SMBS and IBTF are both exchange-traded funds (ETFs), meaning they are traded on stock exchanges and can be bought and sold throughout the day. SMBS is a passively managed fund by Charles Schwab that tracks the performance of the Bloomberg US MBS Float Adjusted Total Return Index. It was launched on Nov 18, 2024. IBTF is a passively managed fund by iShares that tracks the performance of the ICE 2025 Maturity US Treasury Index. It was launched on Feb 25, 2020. Both SMBS and IBTF are passive ETFs, meaning that they are not actively managed but aim to replicate the performance of the underlying index as closely as possible.

Performance

SMBS vs. IBTF - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Schwab Mortgage-Backed Securities ETF (SMBS) and iShares iBonds Dec 2025 Term Treasury ETF (IBTF). The values are adjusted to include any dividend payments, if applicable.

SMBS vs. IBTF - Yearly Performance Comparison

	2026 (YTD)	2025	2024
SMBS Schwab Mortgage-Backed Securities ETF	0.36%	8.15%	-0.07%
IBTF iShares iBonds Dec 2025 Term Treasury ETF	0.00%	3.81%	0.71%

Returns By Period

SMBS

• 1D: 0.20%
• 1M: -1.67%
• YTD: 0.36%
• 6M: 1.92%
• 1Y: 5.33%
• 3Y*: —
• 5Y*: —
• 10Y*: —

IBTF

• 1D: 0.00%
• 1M: 0.00%
• YTD: 0.00%
• 6M: 0.73%
• 1Y: 2.88%
• 3Y*: 3.59%
• 5Y*: 1.00%
• 10Y*: —

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

SMBS vs. IBTF - Expense Ratio Comparison

SMBS has a 0.03% expense ratio, which is lower than IBTF's 0.07% expense ratio. Despite the difference, both funds are considered low-cost compared to the broader market, where average expense ratios usually range from 0.3% to 0.9%.

IBTF

iShares iBonds Dec 2025 Term Treasury ETF

SMBS

Schwab Mortgage-Backed Securities ETF

Return for Risk

SMBS vs. IBTF — Risk / Return Rank

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

SMBS

SMBS Risk / Return Rank: 63
SMBS Sharpe Ratio Rank: 65
SMBS Sortino Ratio Rank: 64
SMBS Omega Ratio Rank: 55
SMBS Calmar Ratio Rank: 75
SMBS Martin Ratio Rank: 58

IBTF

IBTF Risk / Return Rank: 99
IBTF Sharpe Ratio Rank: 99
IBTF Sortino Ratio Rank: 99
IBTF Omega Ratio Rank: 99
IBTF Calmar Ratio Rank: 100
IBTF 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.

SMBS vs. IBTF - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Schwab Mortgage-Backed Securities ETF (SMBS) and iShares iBonds Dec 2025 Term Treasury ETF (IBTF). 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.

	SMBS	IBTF	Difference
Sharpe ratio Return per unit of total volatility	1.12	7.41	-6.29
Sortino ratio Return per unit of downside risk	1.61	17.29	-15.68
Omega ratio Gain probability vs. loss probability	1.20	4.32	-3.12
Calmar ratio Return relative to maximum drawdown	1.94	82.67	-80.72
Martin ratio Return relative to average drawdown	5.61	244.42	-238.82
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

SMBS vs. IBTF - Sharpe Ratio Comparison

The current SMBS Sharpe Ratio is 1.12, which is lower than the IBTF Sharpe Ratio of 7.41. The chart below compares the historical Sharpe Ratios of SMBS and IBTF, offering insights into how both investments have performed under varying market conditions. These values are calculated using daily returns over the previous 12 months.

Sharpe Ratios by Period

	SMBS	IBTF	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.12	7.41	-6.29
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	—	0.43	—
Sharpe Ratio (All Time) Calculated using the full available price history	1.27	0.45	+0.82

Correlation

The correlation between SMBS and IBTF is -0.02. This indicates that the assets' prices tend to move in opposite directions. Negative correlation can be particularly beneficial for diversification and risk management, as one asset may offset the losses of the other during market fluctuations.

Dividends

SMBS vs. IBTF - Dividend Comparison

SMBS's dividend yield for the trailing twelve months is around 4.80%, more than IBTF's 3.14% yield.

	TTM	2025	2024	2023	2022	2021	2020
SMBS Schwab Mortgage-Backed Securities ETF	4.41%	4.83%	0.50%	0.00%	0.00%	0.00%	0.00%
IBTF iShares iBonds Dec 2025 Term Treasury ETF	2.78%	3.83%	4.32%	4.03%	1.93%	0.57%	0.59%

Drawdowns

SMBS vs. IBTF - Drawdown Comparison

The maximum SMBS drawdown since its inception was -3.20%, smaller than the maximum IBTF drawdown of -10.45%. Use the drawdown chart below to compare losses from any high point for SMBS and IBTF.

Drawdown Indicators

	SMBS	IBTF	Difference
Max Drawdown Largest peak-to-trough decline	-3.20%	-10.45%	+7.25%
Max Drawdown (1Y) Largest decline over 1 year	-2.83%	-0.04%	-2.79%
Max Drawdown (5Y) Largest decline over 5 years	—	-9.53%	—
Current Drawdown Current decline from peak	-1.67%	0.00%	-1.67%
Average Drawdown Average peak-to-trough decline	-0.77%	-3.42%	+2.65%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.98%	0.01%	+0.97%

Volatility

SMBS vs. IBTF - Volatility Comparison

Schwab Mortgage-Backed Securities ETF (SMBS) has a higher volatility of 1.82% compared to iShares iBonds Dec 2025 Term Treasury ETF (IBTF) at 0.00%. This indicates that SMBS's price experiences larger fluctuations and is considered to be riskier than IBTF based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	SMBS	IBTF	Difference
Volatility (1M) Calculated over the trailing 1-month period	1.82%	0.00%	+1.82%
Volatility (6M) Calculated over the trailing 6-month period	2.75%	0.25%	+2.50%
Volatility (1Y) Calculated over the trailing 1-year period	4.77%	0.46%	+4.31%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	4.92%	2.39%	+2.53%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	4.92%	2.60%	+2.32%