# EDGAR Filing Document

**Accession Number:** 0001500604
**File Stem:** 0001398344-26-010572
**Filing Date:** 2026-6
**Character Count:** 4537
**Document Hash:** 8827425bfcc47dfb4919fc475de1589e
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001398344-26-010572.hdr.sgml**: 20260609

**ACCESSION NUMBER**: 0001398344-26-010572

**CONFORMED SUBMISSION TYPE**: 497

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20260609

**DATE AS OF CHANGE**: 20260608

**EFFECTIVENESS DATE**: 20260609

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Janus Detroit Street Trust
- **CENTRAL INDEX KEY:** 0001500604

**ORGANIZATION NAME:**
- **EIN:** 000000000
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1031

**FILING VALUES:**
- **FORM TYPE:** 497
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 333-207814
- **FILM NUMBER:** 261073828

**BUSINESS ADDRESS:**
- **STREET 1:** 151 DETROIT STREET
- **CITY:** DENVER
- **STATE:** CO
- **ZIP:** 80206
- **BUSINESS PHONE:** 303-333-3863

**MAIL ADDRESS:**
- **STREET 1:** 151 DETROIT STREET
- **CITY:** DENVER
- **STATE:** CO
- **ZIP:** 80206

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** Janus ETF Trust
- **DATE OF NAME CHANGE:** 20100902

## Series and Classes Contracts Data

### Janus Henderson Mortgage-Backed Securities ETF (Series ID: S000063007)

---

|  |  |  |
|:---|:---|:---|
| Class Name                                     | Ticker Symbol | Class ID   |
| Janus Henderson Mortgage-Backed Securities ETF | JMBS          | C000204446 |

---

## Series and Classes Contracts Data

### Janus Henderson Mortgage-Backed Securities ETF (Series ID: S000063007)

| Class ID   | Class Name                                     | Ticker Symbol   |
|:---|:---|:---|
| C000204446 | Janus Henderson Mortgage-Backed Securities ETF | JMBS            |

Janus Detroit Street Trust

Janus Henderson Mortgage-Backed Securities ETF

Supplement dated June 9, 2026

to Currently Effective Statement of Additional Information ("SAI")

Effective immediately, the SAI for **Janus Henderson Mortgage-Backed Securities ETF** (the "Fund") is amended as follows:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1. In the table under the **"Investment Strategies and Risks"** section of the SAI, the following information replaces the corresponding information in the table with respect to
the Fund only:

---

| | |
|:---|:---|
| **Strategies, Types of Securities, and Risks** | **JMBS** |
| General Considerations and Risks | x |
| Diversification | x |
| Adjustable Rate Mortgage-Backed Securities | x |
| Agency Mortgage-Related Securities | x |
| Artificial Intelligence ("AI") Risk | x |
| Asset-Backed Securities | x |
| Bank Capital Securities | x |
| Bank Obligations | x |
| Callable Securities | x |
| Cash Position | x |
| Collateralized Mortgage Obligations | x |
| Commercial Mortgage-Backed Securities | x |
| Commercial Real Estate Collateralized Loan Obligations | x |
| Confidential Information | x |
| Corporate Bonds | x |
| Credit Risk Transfer Securities | x |
| Credit Spread Trades | x |
| Cyber Security Risk | x |

---

---

| | |
|:---|:---|
| Derivative Instruments | x |
| Distressed or Defaulted Securities | x |
| ESG Exclusions Policy | x |
| Exchange-Traded Funds | x |
| Exchange-Traded Notes | x |
| Fixed Income Securities | x |
| Floating Rate Obligations | x |
| Foreign Securities | x |
| Forward Contracts | x |
| Futures Contracts | x |
| High-Yield Bonds | x |
| Illiquid Investments | x |
| Inflation-Linked Securities | x |
| Inflation-Related Investments Risk | x |
| Investment Company Securities | x |
| Loans | x |
| Money Market Instruments | x |
| Mortgage Dollar Rolls | x |
| Non-Agency Mortgage-Related Securities | x |
| Operational Risk | x |
| Options on Securities, Securities Indices & Foreign Currencies | x |
| Option Transaction Risk | x |
| Pass-Through Securities | x |
| Performance Indexed Paper | x |
| Preferred Stock | x |
| Private Placements and Other Exempt Securities | x |
| Real Estate Investment Trusts and Real Estate-Linked Derivatives | x |
| Regulation S Securities | x |

---

---

| | |
|:---|:---|
| Regulatory Changes and Market Events and Risks | x |
| Repurchase and Reverse Repurchase Agreements | x |
| Sale-Buybacks | x |
| Securities Lending | x |
| Settlement Risk | x |
| Special Situations | x |
| Standby Commitments | x |
| Strip Bonds | x |
| Stripped Mortgage-Backed Securities | x |
| Structured Investments | x |
| Swaps and Swap-Related Products | x |
| Tender Option Bonds | x |
| U.S. Government Securities | x |
| When-Issued, Delayed Delivery, and TBA Commitments | x |
| Zero Coupon, Step Coupon, and Pay In Kind Securities | x |

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**Please retain this Supplement with your records.**