JMBS vs. SPMB
JMBS (Janus Henderson Mortgage-Backed Securities ETF) and SPMB (SPDR Portfolio Mortgage Backed Bond ETF) are both Mortgage Backed Securities funds. JMBS is actively managed, while SPMB is passively managed. Over the past 5 years, JMBS returned 0.74%/yr vs 0.29%/yr for SPMB. Their correlation of 0.83 suggests significant overlap in exposure. JMBS charges 0.32%/yr vs 0.04%/yr for SPMB.
Performance
JMBS vs. SPMB - Performance Comparison
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Returns By Period
As of year-to-date, both investments have demonstrated similar returns, with JMBS at 0.51% and SPMB at 0.51%.
JMBS
- 1D
- -0.29%
- 1M
- 0.29%
- YTD
- 0.51%
- 6M
- 0.73%
- 1Y
- 7.18%
- 3Y*
- 4.66%
- 5Y*
- 0.74%
- 10Y*
- —
SPMB
- 1D
- -0.22%
- 1M
- 0.27%
- YTD
- 0.51%
- 6M
- 0.64%
- 1Y
- 6.74%
- 3Y*
- 4.32%
- 5Y*
- 0.29%
- 10Y*
- 1.21%
JMBS vs. SPMB - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | |
|---|---|---|---|---|---|---|---|---|---|
JMBS Janus Henderson Mortgage-Backed Securities ETF | 0.51% | 8.82% | 1.53% | 5.66% | -11.40% | -0.32% | 5.80% | 7.11% | 1.53% |
SPMB SPDR Portfolio Mortgage Backed Bond ETF | 0.51% | 8.29% | 1.35% | 5.09% | -12.05% | -1.46% | 4.19% | 6.16% | 1.93% |
Correlation
The correlation between JMBS and SPMB is 0.94, 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 | 0.94 |
Correlation (3Y) Calculated over the trailing 3-year period | 0.96 |
Correlation (5Y) Calculated over the trailing 5-year period | 0.95 |
Correlation (All Time) Calculated using the full available price history since Sep 14, 2018 | 0.83 |
The correlation between JMBS and SPMB shifts across timeframes, from 0.83 (all time) to 0.96 (3 years), reflecting how their relationship changes across market environments.
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Return for Risk
JMBS vs. SPMB — Risk / Return Rank
JMBS
SPMB
JMBS vs. SPMB - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Janus Henderson Mortgage-Backed Securities ETF (JMBS) 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.
| JMBS | SPMB | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | +0.09 | ||
| Sortino ratioReturn per unit of downside risk | +0.12 | ||
| Omega ratioGain probability vs. loss probability | 1.31 | 1.29 | +0.02 |
| Calmar ratioReturn relative to maximum drawdown | 2.36 | 2.34 | +0.02 |
| Martin ratioReturn relative to average drawdown | 7.80 | 7.70 | +0.10 |
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month. | |||
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Sharpe Ratios by Period
| JMBS | SPMB | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 1.67 | 1.58 | +0.09 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | 0.11 | 0.04 | +0.07 |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | — | 0.16 | — |
Sharpe Ratio (All Time)Calculated using the full available price history | 0.42 | 0.34 | +0.08 |
Drawdowns
JMBS vs. SPMB - Drawdown Comparison
The maximum JMBS drawdown since its inception was -16.68%, smaller than the maximum SPMB drawdown of -18.03%. Use the drawdown chart below to compare losses from any high point for JMBS and SPMB.
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Drawdown Indicators
| JMBS | SPMB | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -16.68% | -18.03% | +1.35% |
Max Drawdown (1Y)Largest decline over 1 year | -3.05% | -2.89% | -0.16% |
Max Drawdown (3Y)Largest decline over 3 years | -7.76% | -7.66% | -0.10% |
Max Drawdown (5Y)Largest decline over 5 years | -16.68% | -17.49% | +0.81% |
Max Drawdown (10Y)Largest decline over 10 years | — | -18.03% | — |
Current DrawdownCurrent decline from peak | -1.66% | -1.58% | -0.08% |
Average DrawdownAverage peak-to-trough decline | -3.90% | -2.85% | -1.05% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 0.92% | 0.88% | +0.04% |
Volatility
JMBS vs. SPMB - Volatility Comparison
Janus Henderson Mortgage-Backed Securities ETF (JMBS) and SPDR Portfolio Mortgage Backed Bond ETF (SPMB) have volatilities of 1.65% and 1.58%, respectively, indicating that both stocks experience similar levels of price fluctuations. This suggests that the risk associated with both stocks, as measured by volatility, is nearly the same. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| JMBS | SPMB | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 1.65% | 1.58% | +0.07% |
Volatility (6M)Calculated over the trailing 6-month period | 3.23% | 3.08% | +0.15% |
Volatility (1Y)Calculated over the trailing 1-year period | 4.31% | 4.28% | +0.03% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 6.49% | 6.77% | -0.28% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 5.52% | 7.61% | -2.09% |
JMBS vs. SPMB - Expense Ratio Comparison
JMBS has a 0.32% expense ratio, which is higher than SPMB's 0.04% expense ratio.
Dividends
JMBS vs. SPMB - Dividend Comparison
JMBS's dividend yield for the trailing twelve months is around 5.19%, more than SPMB's 4.09% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
JMBS Janus Henderson Mortgage-Backed Securities ETF | 5.19% | 5.03% | 5.53% | 4.38% | 2.73% | 1.16% | 2.92% | 3.63% | 0.89% | 0.00% | 0.00% | 0.00% |
SPMB SPDR Portfolio Mortgage Backed Bond ETF | 4.09% | 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
With a correlation of 0.94, JMBS 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.
JMBS has higher volatility (1.65%) compared to SPMB (1.58%). In terms of maximum drawdown, JMBS dropped -16.68% vs SPMB's -18.03%.
On 5-year performance, JMBS leads with 0.74% vs 0.29% for SPMB. On fees, SPMB is cheaper at 0.04% per year. Their volatility is very similar. The better choice depends on whether you care most about return, fees, risk, or income.
Over the 5-year period, JMBS has performed better with a 0.74% return vs 0.29%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.
SPMB is cheaper with a 0.04% expense ratio, compared with 0.32% for JMBS.
JMBS has the higher dividend yield at 5.19%, compared with 4.09% for SPMB.
They also come from different issuers: Janus Henderson and State Street. Their fees differ too: 0.32% for JMBS and 0.04% for SPMB.
JMBS currently has the higher Sharpe Ratio (1.67 vs 1.58), 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.
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