JMBS vs SPMB
Janus Henderson Mortgage-Backed Securities ETF against State Street SPDR Portfolio Mortgage Backed Bond ETF: cost, size, returns, what they hold and how much of it is the same.
Overlap by weight
2%
15 shared positions
Fee gap
17 bp
SPMB is cheaper
1-year return gap
1.3 pts
SPMB is ahead
Larger fund
SPMB
$6.9B
Side by side
| JMBS | SPMB | |
|---|---|---|
| Fund | Janus Henderson Mortgage-Backed Securities ETF | State Street SPDR Portfolio Mortgage Backed Bond ETF |
| Issuer | Janus Henderson | State Street SPDR |
| Category | Mortgage & Securitized | Mortgage & Securitized |
| Expense ratio | 0.21% | 0.04% |
| Assets | $6.2B | $6.9B |
| Average daily dollar volume | $51M | $51M |
| Listed | Sep 12, 2018 | Jan 15, 2009 |
| FrenzyCap score | 76 | 95 |
| 1-month return | −1.6% | −1.1% |
| 3-month return | −3.4% | −2.6% |
| Year to date | −6.3% | −4.7% |
| 1-year return | −7.0% | −5.7% |
| 30-day volatility | 7.0% | 6.6% |
| Worst drawdown, 1 year | −9.1% | −8.0% |
| Trailing 12-month yield | 5.48% | 4.30% |
| Holdings | 445 | 2,763 |
| Top 10 weight | 58.9% | 7.2% |
| Look-through P/E | — | — |
| Holdings vs fair value | — | — |
| Holdings above 200-day average | — | — |
| Net flow, latest 3 reported months | +$225M thru Jul 2026 | +$196M thru Jun 2026 |
| 30-day implied volatility | 35.0% | 29.4% |
| Holdings as of | as of Oct 20, 2026issuer data | as of Oct 20, 2026issuer data |
Returns are price returns and exclude distributions. Flows are each fund's own latest reported months and may not cover the same period.
Largest shared holdings
30% of JMBS · 2% of SPMB| Holding | JMBS | SPMB |
|---|---|---|
| FHLMC TBA 10yr 8% August Delivery, 6.50%, 11/12/26, due Nov 12, 2026 | 4.75% | 0.33% |
| FHLMC 10/1 Pool#1B3500 Var 01-Jul-2037, 5.50%, 11/19/26, due Nov 19, 2026 | 2.55% | 0.18% |
| FHLMC TBA 10yr 3% December Delivery, 4.00%, 11/12/26, due Nov 12, 2026 | 4.72% | 0.15% |
| FHLMC 10/1 Pool#1B3335 Var 01-Aug-2036, 5.00%, 11/19/26, due Nov 19, 2026 | 2.99% | 0.14% |
| FHLMC 10/1 Pool#1B2806 Var 01-Feb-2035, 4.00%, 11/19/26, due Nov 19, 2026 | 1.44% | 0.14% |
| FHLMC 10/1 Pool#1B2422 Var 01-Oct-2035, 3.50%, 11/19/26, due Nov 19, 2026 | 1.79% | 0.13% |
| FHLMC TBA 10yr 12% December Delivery, 3.00%, 11/12/26, due Nov 12, 2026 | 4.62% | 0.12% |
| FHLMC TBA 10yr 7% August Delivery, 6.00%, 11/12/26, due Nov 12, 2026 | 0.11% | 0.39% |
| FHLMC 10/1 Pool#1B3088 Var 01-Sep-2036, 4.50%, 11/19/26, due Nov 19, 2026 | 1.66% | 0.10% |
| FHLMC TBA 10yr 2% December Delivery, 3.50%, 11/12/26, due Nov 12, 2026 | 2.46% | 0.09% |
| FHLMC 10/1 Pool#1B1245 Var 01-Oct-2033, 3.00%, 11/19/26, due Nov 19, 2026 | 2.46% | 0.03% |
| FNMA 30yr Pool#AS8649 3.000% 01-Jan-2047, 3.00%, 01/01/47, due Jan 1, 2047 | 0.00% | 0.00% |
| FNMA 30yr Pool#BM3282 3.500% 01-Dec-2047, 3.50%, 12/01/47, due Dec 1, 2047 | 0.00% | 0.00% |
| FNMA 15yr Pool#AS7643 2.500% 01-Aug-2031, 2.50%, 08/01/31, due Aug 1, 2031 | 0.00% | 0.00% |
| FNMA 15yr Pool#BM1036 2.500% 01-Feb-2032, 2.50%, 02/01/32, due Feb 1, 2032 | 0.00% | 0.00% |
Sector mix of the stock holdings
No sector breakdown: these funds hold few classified stocks.
More: full overlap table · JMBS holdings · SPMB holdings
Fund data comes from each fund's SEC filings and issuer disclosures and is shown with the date it is as of. SEC portfolio and flow filings become public about 60 days after the period they cover. Nothing here is investment advice; see Terms.