# EDGAR Filing Document

**Accession Number:** 0001500604
**File Stem:** 0001398344-25-014729
**Filing Date:** 2025-8
**Character Count:** 5002
**Document Hash:** 7212c01bde0caec9ece08a7f4c72d4d7
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001398344-25-014729.hdr.sgml**: 20250807

**ACCESSION NUMBER**: 0001398344-25-014729

**CONFORMED SUBMISSION TYPE**: 497

**PUBLIC DOCUMENT COUNT**: 17

**FILED AS OF DATE**: 20250807

**DATE AS OF CHANGE**: 20250807

**EFFECTIVENESS DATE**: 20250807

**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:** 251194827

**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 Short Duration Income ETF (Series ID: S000055281)

---

|  |  |  |
|:---|:---|:---|
| Class Name                                | Ticker Symbol | Class ID   |
| Janus Henderson Short Duration Income ETF | VNLA          | C000173876 |

---

## Series and Classes Contracts Data

### Janus Henderson Short Duration Income ETF (Series ID: S000055281)

| Class ID   | Class Name                                | Ticker Symbol   |
|:---|:---|:---|
| C000173876 | Janus Henderson Short Duration Income ETF | VNLA            |

?xml version='1.0' encoding='ASCII'?

Janus Detroit Street Trust

Janus Henderson Short Duration Income ETF

**IMPORTANT NOTICE REGARDING INVESTMENT POLICY CHANGES**

Supplement dated August 7, 2025

to Currently Effective Prospectuses

The Board of Trustees (the "Trustees") of Janus Detroit Street Trust, on behalf of **Janus Henderson Short Duration Income ETF** (the "Fund") has approved changes to the Fund's investment objective, principal investment strategy, and the Fund's performance benchmark index from FTSE 3-Month U.S. Treasury Bill Index to ICE BofA U.S. 3-Month Treasury Bill Total Return Index.

As a result of the aforementioned change, effective on or about October 7, 2025, the Fund's prospectuses will be amended as follows:

1. Under "**Investment Objective**" in the **Fund Summary** section of the Fund's prospectuses, the following information replaces the corresponding information:

**Janus Henderson Short Duration Income ETF** seeks current income, consistent with preservation of capital.

2. Under "**Principal Investment Strategy**" in the **Fund Summary** section of the Fund's prospectuses, the following paragraph replaces the second paragraph in its entirety:

Under normal circumstances, the average portfolio duration of the Fund generally will be 0-2 years. The Fund primarily invests in investment grade debt securities, rated Baa or higher by Moody's Investors Services, Inc. ("Moody's"), or equivalently rated by Standard & Poor's Ratings Services ("Standard & Poor's") or Fitch, Inc. ("Fitch"), or, if unrated, determined by the Adviser to be of comparable quality. The Fund may invest in high-yield bonds, commercial paper, mortgage-backed securities, and floating rate securities that are rated below investment grade (commonly known as "high-yield debt" or "junk" bonds), but generally intends to invest 15% or less of its net assets in such securities.

3. Under "**Performance Information**" in the **Fund Summary** section of the Fund's prospectuses, the following information replaces the corresponding information:

---

| | | | |
|:---|:---|:---|:---|
| **Average Annual Total Returns** (periods ended 12/31/24) | | | |
| | **1 Year** | **5 Years** | **Since**<br> **Inception**<br> **(11/16/2016)** |
| Return Before Taxes | 6.34% | 2.99% | 2.82% |
| Return After Taxes on Distributions | 4.71% | 1.75% | 1.62% |
| Return After Taxes on Distributions and Sale of Fund Shares<sup>(1)</sup> | 3.73% | 1.75% | 1.64% |
| &nbsp;&nbsp;&nbsp;Bloomberg U.S. Aggregate Bond Index<sup>(2)</sup> (reflects no deduction for expenses, fees, or taxes) | 1.25% | -0.33% | 1.21% |
| &nbsp;&nbsp;&nbsp;ICE BofA U.S. 3-Month Treasury Bill Total Return Index<sup>(2)(3)</sup> (reflects no deduction for expenses, fees, or taxes) | 5.25% | 2.46% | 2.14% |

---

(1) If the Fund incurs a loss, which generates a tax benefit, the Return After Taxes on Distributions and Sale of Fund Shares may exceed
the Fund's other return figures.

(2) Index performance shown in the table is the total return, which assumes reinvestment of any dividends and distributions during the
time periods shown.

(3) Effective on or about October 7, 2025, the Fund changed the performance benchmark from the FTSE 3-Month U.S. Treasury Bill Index to
the ICE BofA U.S. 3-Month Treasury Bill Total Return Index as it has investment characteristics similar to the Fund.

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