JMBS — Janus Henderson Mortgage-Backed Securities ETF
Data updated: 2026-06-26
JMBS — Janus Henderson Mortgage-Backed Securities ETF data: holdings, portfolio allocation, expenses, performance, cashflows, risk and SEC filings. Long Securitized (MBS/ABS/CMBS) Bond · $6.62B AUM · 0.21% expense ratio · 5.9% 1-yr return. From SEC regulatory filings.
JMBS Fund Overview
JMBS — Janus Henderson Mortgage-Backed Securities ETF is a US ETF managed by Janus Detroit Street Trust, categorised as Long Securitized (MBS/ABS/CMBS) Bond. ABC INVEST provides holdings, performance, costs, cashflows, risk data, prospectus documents and SEC filings, sourced from SEC filings.
- Type: US ETF
- Manager: Janus Detroit Street Trust
- Category: Long Securitized (MBS/ABS/CMBS) Bond
- Assets under management: $6.62B
- 1-year return: 5.9%
- Ticker: JMBS
- SEC CIK: 0001500604
- SEC series ID: S000063007
- Share class ID: C000204446
JMBS Holdings
Top 10 holdings of Janus Henderson Mortgage-Backed Securities ETF by percentage of net assets, from the fund's latest SEC N-PORT filing.
| Holding | % of net assets |
|---|---|
| FNMA or FHLMC | 19.96% |
| Gnma | 9.19% |
| FNMA or FHLMC | 6.39% |
| FNMA or FHLMC | 4.36% |
| FNMA or FHLMC | 4.01% |
| FNMA or FHLMC | 3.07% |
| Gnma | 2.97% |
| Gnma | 2.51% |
| Gnma | 2.45% |
| FNMA or FHLMC | 2.16% |
JMBS Portfolio Allocation
Asset-class allocation of Janus Henderson Mortgage-Backed Securities ETF by percentage of net assets, from the latest SEC N-PORT filing.
| Asset class | Allocation |
|---|---|
| Securitized | 163.9% |
| Cash & Equivalents | 1.6% |
| Fixed Income | 0.2% |
| Real Estate | 0.1% |
JMBS Performance
Total returns for JMBS (as of 2026-08-01), from SEC filings.
| Period | Total return |
|---|---|
| YTD | 0.6% |
| 1 year | 5.9% |
| 3 years (annualised) | 4.3% |
| 5 years (annualised) | 0.7% |
JMBS Risk Information
Risk metrics for JMBS, derived from monthly returns in SEC filings.
- 1-year volatility (annualised): 4.0%
JMBS Costs and Fees
JMBS costs about $21 per $10,000 invested per year in fund expenses.
- Net expense ratio: 0.21%
- Gross expense ratio: 0.21%
- Portfolio turnover: 102%
- Brokerage commissions: 0.28 bps of average net assets (SEC N-CEN)
JMBS Cashflows
Over the 12 months to 2026-04, Janus Henderson Mortgage-Backed Securities ETF had net inflows of $1.17B, from monthly SEC N-PORT filings.
| Month | Net flow |
|---|---|
| 2026-04 | $44.40M |
| 2026-03 | −$64.72M |
| 2026-02 | $123.73M |
| 2026-01 | −$401.20M |
| 2025-12 | $221.43M |
| 2025-11 | $126.80M |
JMBS Debt Constituents
Largest debt holdings of Janus Henderson Mortgage-Backed Securities ETF by percentage of net assets, from the latest SEC N-PORT filing.
| Debt holding | % of net assets |
|---|---|
| Rithm Capital Corp. | 0.14% |
| Meridian Arc Holdco LLC | 0.10% |
JMBS Prospectus and SEC Filings
Official Janus Henderson Mortgage-Backed Securities ETF filings on SEC EDGAR — prospectus, portfolio holdings and annual reports.
Related Funds
Other Long Securitized (MBS/ABS/CMBS) Bond funds tracked on ABC INVEST:
Data Sources
ABC INVEST compiles this page from public filings made to the U.S. Securities and Exchange Commission (SEC) through EDGAR: portfolio holdings and monthly cashflows from Form N-PORT, expenses and returns from fund prospectuses (Form 485BPOS) and the SEC DERA Risk/Return Summary data sets, annual data from Form N-CEN, and shareholder reports from Form N-CSR.