JMTG vs. SPMB

Last updated Jul 14, 2026

JMTG (JPMorgan Mortgage-Backed Securities ETF) and SPMB (SPDR Portfolio Mortgage Backed Bond ETF) are both Mortgage Backed Securities funds. JMTG is actively managed, while SPMB is passively managed. Over the past year, JMTG returned 5.00% vs 4.91% for SPMB. Their correlation of 0.92 suggests significant overlap in exposure. JMTG charges 0.24%/yr vs 0.04%/yr for SPMB.

Performance

JMTG vs. SPMB - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in JPMorgan Mortgage-Backed Securities ETF (JMTG) and SPDR Portfolio Mortgage Backed Bond ETF (SPMB). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, JMTG achieves a 0.40% return, which is significantly higher than SPMB's 0.11% return.

JMTG

• 1D: -0.34%
• 1M: -0.41%
• 6M: 0.12%
• YTD: 0.40%
• 1Y: 5.00%
• 3Y*: —
• 5Y*: —
• 10Y*: —

SPMB

• 1D: -0.45%
• 1M: -0.81%
• 6M: -0.45%
• YTD: 0.11%
• 1Y: 4.91%
• 3Y*: 4.12%
• 5Y*: 0.19%
• 10Y*: 1.15%

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

JMTG vs. SPMB - Yearly Performance Comparison

	2026 (YTD)	2025
JMTG JPMorgan Mortgage-Backed Securities ETF	0.40%	3.94%
SPMB SPDR Portfolio Mortgage Backed Bond ETF	0.11%	4.31%

Correlation

The correlation between JMTG and SPMB is 0.93, indicating a strong positive relationship between their price movements. Combining them offers limited diversification - they tend to fall together during downturns.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.93
Correlation (All Time) Calculated using the full available price history since Jun 30, 2025	0.92

The correlation between JMTG and SPMB has been stable across timeframes, ranging from 0.92 to 0.93 - a consistent structural relationship.

Return for Risk

JMTG vs. SPMB — Risk / Return Rank

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

JMTG

JMTG Risk / Return Rank: 46
JMTG Sharpe Ratio Rank: 49
JMTG Sortino Ratio Rank: 51
JMTG Omega Ratio Rank: 47
JMTG Calmar Ratio Rank: 45
JMTG Martin Ratio Rank: 39

SPMB

SPMB Risk / Return Rank: 41
SPMB Sharpe Ratio Rank: 41
SPMB Sortino Ratio Rank: 42
SPMB Omega Ratio Rank: 40
SPMB Calmar Ratio Rank: 42
SPMB Martin Ratio Rank: 41

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.

JMTG vs. SPMB - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for JPMorgan Mortgage-Backed Securities ETF (JMTG) and SPDR Portfolio Mortgage Backed Bond ETF (SPMB). 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.

Values are calculated on a 1-year rolling basis and updated daily. Risk-adjusted metrics are more stable over longer periods — use the period switch above to explore them.

	JMTG	SPMB	Difference
Sharpe ratio: Return per unit of total volatility	1.36	1.18	+0.19
Sortino ratio: Return per unit of downside risk	2.01	1.75	+0.26
Omega ratio: Gain probability vs. loss probability	1.24	1.21	+0.03
Calmar ratio: Return relative to maximum drawdown	1.81	1.71	+0.10
Martin ratio: Return relative to average drawdown	4.98	5.19	-0.21

JMTG vs. SPMB - Sharpe Ratio Comparison

The current JMTG Sharpe Ratio is 1.36, which is comparable to the SPMB Sharpe Ratio of 1.18. The chart below compares the historical Sharpe Ratios of JMTG and SPMB, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Drawdowns

JMTG vs. SPMB - Drawdown Comparison

The maximum JMTG drawdown since its inception was -2.78%, smaller than the maximum SPMB drawdown of -18.03%. Use the drawdown chart below to compare losses from any high point for JMTG and SPMB.

Drawdown Indicators

	JMTG	SPMB	Difference
Max Drawdown Largest peak-to-trough decline	-2.78%	-18.03%	+15.25%
Max Drawdown (1Y) Largest decline over 1 year	-2.78%	-2.89%	+0.11%
Max Drawdown (3Y) Largest decline over 3 years	—	-7.65%	—
Max Drawdown (5Y) Largest decline over 5 years	—	-17.49%	—
Max Drawdown (10Y) Largest decline over 10 years	—	-18.03%	—
Current Drawdown Current decline from peak	-1.85%	-1.98%	+0.13%
Average Drawdown Average peak-to-trough decline	-0.75%	-2.84%	+2.09%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.01%	0.95%	+0.06%

Volatility

JMTG vs. SPMB - Volatility Comparison

The current volatility for JPMorgan Mortgage-Backed Securities ETF (JMTG) is 1.22%, while SPDR Portfolio Mortgage Backed Bond ETF (SPMB) has a volatility of 1.36%. This indicates that JMTG experiences smaller price fluctuations and is considered to be less risky than SPMB based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	JMTG	SPMB	Difference
Volatility (1M) Calculated over the trailing 1-month period	1.22%	1.36%	-0.14%
Volatility (6M) Calculated over the trailing 6-month period	2.89%	3.28%	-0.39%
Volatility (1Y) Calculated over the trailing 1-year period	3.70%	4.21%	-0.51%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	3.70%	6.80%	-3.10%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	3.70%	7.62%	-3.92%

JMTG vs. SPMB - Expense Ratio Comparison

JMTG has a 0.24% expense ratio, which is higher than SPMB's 0.04% 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

JMTG vs. SPMB - Dividend Comparison

JMTG's dividend yield for the trailing twelve months is around 4.32%, more than SPMB's 4.13% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
JMTG JPMorgan Mortgage-Backed Securities ETF	4.32%	2.10%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%
SPMB SPDR Portfolio Mortgage Backed Bond ETF	4.13%	3.98%	3.76%	3.21%	2.98%	2.59%	2.95%	3.24%	3.36%	3.13%	2.99%	3.05%

Frequently Asked Questions

Can I hold both JMTG and SPMB in my portfolio?

With a correlation of 0.93, JMTG and SPMB move almost identically. Holding both adds very little diversification - you're essentially doubling your position in the same market segment. Choosing one is usually more capital-efficient.

Which is riskier, JMTG or SPMB?

SPMB has higher volatility (1.36%) compared to JMTG (1.22%). In terms of maximum drawdown, JMTG dropped -2.78% vs SPMB's -18.03%.

Which ETF is better, JMTG or SPMB?

On 1-year performance, JMTG leads with 5.00% vs 4.91% for SPMB. On fees, SPMB is cheaper at 0.04% per year. On volatility, JMTG has been the lower-risk option at 1.22%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, JMTG or SPMB?

Over the 1-year period, JMTG has performed better with a 5.00% return vs 4.91%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, JMTG or SPMB?

SPMB is cheaper with a 0.04% expense ratio, compared with 0.24% for JMTG.

Which ETF pays a higher dividend yield, JMTG or SPMB?

JMTG has the higher dividend yield at 4.32%, compared with 4.13% for SPMB.

What is the main difference between JMTG and SPMB?

They also come from different issuers: JPMorgan and State Street. Their fees differ too: 0.24% for JMTG and 0.04% for SPMB.

Which has better risk-adjusted returns?

JMTG currently has the higher Sharpe Ratio (1.36 vs 1.18), 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.