JMBS vs. MBB
JMBS (Janus Henderson Mortgage-Backed Securities ETF) and MBB (iShares MBS Bond ETF) are both Mortgage Backed Securities funds. JMBS is actively managed, while MBB is passively managed. Over the past 5 years, JMBS returned 0.74%/yr vs 0.34%/yr for MBB. Their correlation of 0.86 suggests significant overlap in exposure. JMBS charges 0.32%/yr vs 0.06%/yr for MBB.
Performance
JMBS vs. MBB - Performance Comparison
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Returns By Period
In the year-to-date period, JMBS achieves a 0.51% return, which is significantly lower than MBB's 0.58% return.
JMBS
- 1D
- -0.29%
- 1M
- 0.29%
- YTD
- 0.51%
- 6M
- 0.73%
- 1Y
- 7.18%
- 3Y*
- 4.66%
- 5Y*
- 0.74%
- 10Y*
- —
MBB
- 1D
- -0.23%
- 1M
- 0.31%
- YTD
- 0.58%
- 6M
- 0.71%
- 1Y
- 6.76%
- 3Y*
- 4.36%
- 5Y*
- 0.34%
- 10Y*
- 1.30%
JMBS vs. MBB - 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% |
MBB iShares MBS Bond ETF | 0.58% | 8.38% | 1.31% | 5.01% | -11.74% | -1.43% | 4.08% | 6.18% | 1.85% |
Correlation
The correlation between JMBS and MBB 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 | 0.86 |
The correlation between JMBS and MBB has been stable across timeframes, ranging from 0.86 to 0.96 - a consistent structural relationship.
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Return for Risk
JMBS vs. MBB — Risk / Return Rank
JMBS
MBB
JMBS vs. MBB - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Janus Henderson Mortgage-Backed Securities ETF (JMBS) and iShares MBS Bond ETF (MBB). 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 | MBB | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | +0.17 | ||
| Sortino ratioReturn per unit of downside risk | +0.28 | ||
| Omega ratioGain probability vs. loss probability | 1.31 | 1.27 | +0.04 |
| Calmar ratioReturn relative to maximum drawdown | 2.36 | 2.31 | +0.05 |
| Martin ratioReturn relative to average drawdown | 7.80 | 7.64 | +0.16 |
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 | MBB | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 1.67 | 1.51 | +0.17 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | 0.11 | 0.05 | +0.06 |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | — | 0.25 | — |
Sharpe Ratio (All Time)Calculated using the full available price history | 0.42 | 0.58 | -0.17 |
Drawdowns
JMBS vs. MBB - Drawdown Comparison
The maximum JMBS drawdown since its inception was -16.68%, smaller than the maximum MBB drawdown of -17.64%. Use the drawdown chart below to compare losses from any high point for JMBS and MBB.
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Drawdown Indicators
| JMBS | MBB | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -16.68% | -17.64% | +0.96% |
Max Drawdown (1Y)Largest decline over 1 year | -3.05% | -2.94% | -0.11% |
Max Drawdown (3Y)Largest decline over 3 years | -7.76% | -7.68% | -0.08% |
Max Drawdown (5Y)Largest decline over 5 years | -16.68% | -17.19% | +0.51% |
Max Drawdown (10Y)Largest decline over 10 years | — | -17.64% | — |
Current DrawdownCurrent decline from peak | -1.66% | -1.52% | -0.14% |
Average DrawdownAverage peak-to-trough decline | -3.90% | -2.35% | -1.55% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 0.92% | 0.89% | +0.03% |
Volatility
JMBS vs. MBB - Volatility Comparison
Janus Henderson Mortgage-Backed Securities ETF (JMBS) and iShares MBS Bond ETF (MBB) have volatilities of 1.65% and 1.59%, 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 | MBB | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 1.65% | 1.59% | +0.06% |
Volatility (6M)Calculated over the trailing 6-month period | 3.23% | 3.23% | 0.00% |
Volatility (1Y)Calculated over the trailing 1-year period | 4.31% | 4.51% | -0.20% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 6.49% | 6.81% | -0.32% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 5.52% | 5.31% | +0.21% |
JMBS vs. MBB - Expense Ratio Comparison
JMBS has a 0.32% expense ratio, which is higher than MBB's 0.06% expense ratio.
Dividends
JMBS vs. MBB - Dividend Comparison
JMBS's dividend yield for the trailing twelve months is around 5.19%, more than MBB's 4.28% 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% |
MBB iShares MBS Bond ETF | 4.28% | 4.21% | 3.94% | 3.40% | 2.31% | 1.05% | 2.10% | 2.77% | 2.64% | 2.23% | 2.58% | 2.66% |
Frequently Asked Questions
With a correlation of 0.94, JMBS and MBB 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 MBB (1.59%). In terms of maximum drawdown, JMBS dropped -16.68% vs MBB's -17.64%.
On 5-year performance, JMBS leads with 0.74% vs 0.34% for MBB. On fees, MBB is cheaper at 0.06% 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 0.34%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.
MBB is cheaper with a 0.06% expense ratio, compared with 0.32% for JMBS.
JMBS has the higher dividend yield at 5.19%, compared with 4.28% for MBB.
They also come from different issuers: Janus Henderson and iShares. Their fees differ too: 0.32% for JMBS and 0.06% for MBB.
JMBS currently has the higher Sharpe Ratio (1.67 vs 1.51), 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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