# EDGAR Filing Document

**Accession Number:** 0001500604
**File Stem:** 0001398344-25-022833
**Filing Date:** 2025-12
**Character Count:** 10849
**Document Hash:** 128781ff80abd7bb58da49f770fd8ea6
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001398344-25-022833.hdr.sgml**: 20251223

**ACCESSION NUMBER**: 0001398344-25-022833

**CONFORMED SUBMISSION TYPE**: 497

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20251223

**DATE AS OF CHANGE**: 20251222

**EFFECTIVENESS DATE**: 20251223

**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:** 251593960

**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 Small Cap Growth Alpha ETF (Series ID: S000052563)

---

|  |  |  |
|:---|:---|:---|
| Class Name                                 | Ticker Symbol | Class ID   |
| Janus Henderson Small Cap Growth Alpha ETF | JSML          | C000165024 |

---

### Janus Henderson Small/Mid Cap Growth Alpha ETF (Series ID: S000052564)

---

|  |  |  |
|:---|:---|:---|
| Class Name                                     | Ticker Symbol | Class ID   |
| Janus Henderson Small/Mid Cap Growth Alpha ETF | JSMD          | C000165025 |

---

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

---

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

---

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

---

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

---

### Janus Henderson AAA CLO ETF (Series ID: S000069705)

---

|  |  |  |
|:---|:---|:---|
| Class Name                  | Ticker Symbol | Class ID   |
| Janus Henderson AAA CLO ETF | JAAA          | C000222294 |

---

### Janus Henderson U.S. Real Estate ETF (Series ID: S000071696)

---

|  |  |  |
|:---|:---|:---|
| Class Name                           | Ticker Symbol | Class ID   |
| Janus Henderson U.S. Real Estate ETF | JRE           | C000227173 |

---

### Janus Henderson Corporate Bond ETF (Series ID: S000073434)

---

|  |  |  |
|:---|:---|:---|
| Class Name                         | Ticker Symbol | Class ID   |
| Janus Henderson Corporate Bond ETF | JLQD          | C000230327 |

---

### Janus Henderson B-BBB CLO ETF (Series ID: S000074691)

---

|  |  |  |
|:---|:---|:---|
| Class Name                    | Ticker Symbol | Class ID   |
| Janus Henderson B-BBB CLO ETF | JBBB          | C000232781 |

---

### Janus Henderson Securitized Income ETF (Series ID: S000082930)

---

|  |  |  |
|:---|:---|:---|
| Class Name                             | Ticker Symbol | Class ID   |
| Janus Henderson Securitized Income ETF | JSI           | C000246278 |

---

### Janus Henderson Emerging Markets Debt Hard Currency ETF (Series ID: S000086372)

---

|  |  |  |
|:---|:---|:---|
| Class Name                                              | Ticker Symbol | Class ID   |
| Janus Henderson Emerging Markets Debt Hard Currency ETF | JEMB          | C000251866 |

---

### Janus Henderson Mid Cap Growth Alpha ETF (Series ID: S000087757)

---

|  |  |  |
|:---|:---|:---|
| Class Name                               | Ticker Symbol | Class ID   |
| Janus Henderson Mid Cap Growth Alpha ETF | JMID          | C000253667 |

---

### Janus Henderson Income ETF (Series ID: S000088762)

---

|  |  |  |
|:---|:---|:---|
| Class Name                 | Ticker Symbol | Class ID   |
| Janus Henderson Income ETF | JIII          | C000255137 |

---

### Janus Henderson Transformational Growth ETF (Series ID: S000089963)

---

|  |  |  |
|:---|:---|:---|
| Class Name                                  | Ticker Symbol | Class ID   |
| Janus Henderson Transformational Growth ETF | JXX           | C000256831 |

---

### Janus Henderson Asset-Backed Securities ETF (Series ID: S000093664)

---

|  |  |  |
|:---|:---|:---|
| Class Name                                  | Ticker Symbol | Class ID   |
| Janus Henderson Asset-Backed Securities ETF | JABS          | C000262100 |

---

### Janus Henderson Global Artificial Intelligence ETF (Series ID: S000094567)

---

|  |  |  |
|:---|:---|:---|
| Class Name                                         | Ticker Symbol | Class ID   |
| Janus Henderson Global Artificial Intelligence ETF | JHAI          | C000263100 |

---

## Series and Classes Contracts Data

### Janus Henderson Small Cap Growth Alpha ETF (Series ID: S000052563)

| Class ID   | Class Name                                 | Ticker Symbol   |
|:---|:---|:---|
| C000165024 | Janus Henderson Small Cap Growth Alpha ETF | JSML            |

### Janus Henderson Small/Mid Cap Growth Alpha ETF (Series ID: S000052564)

| Class ID   | Class Name                                     | Ticker Symbol   |
|:---|:---|:---|
| C000165025 | Janus Henderson Small/Mid Cap Growth Alpha ETF | JSMD            |

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

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

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

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

### Janus Henderson AAA CLO ETF (Series ID: S000069705)

| Class ID   | Class Name                  | Ticker Symbol   |
|:---|:---|:---|
| C000222294 | Janus Henderson AAA CLO ETF | JAAA            |

### Janus Henderson U.S. Real Estate ETF (Series ID: S000071696)

| Class ID   | Class Name                           | Ticker Symbol   |
|:---|:---|:---|
| C000227173 | Janus Henderson U.S. Real Estate ETF | JRE             |

### Janus Henderson Corporate Bond ETF (Series ID: S000073434)

| Class ID   | Class Name                         | Ticker Symbol   |
|:---|:---|:---|
| C000230327 | Janus Henderson Corporate Bond ETF | JLQD            |

### Janus Henderson B-BBB CLO ETF (Series ID: S000074691)

| Class ID   | Class Name                    | Ticker Symbol   |
|:---|:---|:---|
| C000232781 | Janus Henderson B-BBB CLO ETF | JBBB            |

### Janus Henderson Securitized Income ETF (Series ID: S000082930)

| Class ID   | Class Name                             | Ticker Symbol   |
|:---|:---|:---|
| C000246278 | Janus Henderson Securitized Income ETF | JSI             |

### Janus Henderson Emerging Markets Debt Hard Currency ETF (Series ID: S000086372)

| Class ID   | Class Name                                              | Ticker Symbol   |
|:---|:---|:---|
| C000251866 | Janus Henderson Emerging Markets Debt Hard Currency ETF | JEMB            |

### Janus Henderson Mid Cap Growth Alpha ETF (Series ID: S000087757)

| Class ID   | Class Name                               | Ticker Symbol   |
|:---|:---|:---|
| C000253667 | Janus Henderson Mid Cap Growth Alpha ETF | JMID            |

### Janus Henderson Income ETF (Series ID: S000088762)

| Class ID   | Class Name                 | Ticker Symbol   |
|:---|:---|:---|
| C000255137 | Janus Henderson Income ETF | JIII            |

### Janus Henderson Transformational Growth ETF (Series ID: S000089963)

| Class ID   | Class Name                                  | Ticker Symbol   |
|:---|:---|:---|
| C000256831 | Janus Henderson Transformational Growth ETF | JXX             |

### Janus Henderson Asset-Backed Securities ETF (Series ID: S000093664)

| Class ID   | Class Name                                  | Ticker Symbol   |
|:---|:---|:---|
| C000262100 | Janus Henderson Asset-Backed Securities ETF | JABS            |

### Janus Henderson Global Artificial Intelligence ETF (Series ID: S000094567)

| Class ID   | Class Name                                         | Ticker Symbol   |
|:---|:---|:---|
| C000263100 | Janus Henderson Global Artificial Intelligence ETF | JHAI            |

**Janus Detroit Street Trust**

---

| | |
|:---|:---|
| Janus Henderson AAA CLO ETF | Janus Henderson Mortgage-Backed Securities ETF |
| Janus Henderson Asset-Backed Securities ETF | Janus Henderson Securitized Income ETF |
| Janus Henderson B-BBB CLO ETF | Janus Henderson Short Duration Income ETF |
| Janus Henderson Corporate Bond ETF | Janus Henderson Small Cap Growth Alpha ETF |
| Janus Henderson Emerging Markets Debt Hard Currency ETF | Janus Henderson Small/Mid Cap Growth Alpha ETF |
| Janus Henderson Global Artificial Intelligence ETF | Janus Henderson Transformational Growth ETF |
| Janus Henderson Income ETF | Janus Henderson U.S. Real Estate ETF |
| Janus Henderson Mid Cap Growth Alpha ETF |  |

---

**(collectively, the "Funds")**

**Supplement dated December 23, 2025**

**to Currently Effective Prospectuses**

On December 22, 2025, Janus Henderson Group plc ("Janus Henderson"), the parent company of the Funds' investment adviser, Trian Fund Management, L.P. and its affiliated funds ("Trian"), and General Catalyst Group Management, LLC and its affiliated funds ("General Catalyst") announced that they have entered into a definitive agreement under which Janus Henderson will be acquired by Trian and General Catalyst (the "Transaction"). The Transaction is expected to close in 2026, subject to customary closing conditions, including requisite regulatory approvals, client consents, and approval by Janus Henderson's shareholders.

The closing of the Transaction will be deemed to be an "assignment" (as defined in the Investment Company Act of 1940, as amended) of the advisory agreement between each Fund and Janus Henderson Investors US LLC (the "Adviser"). As a result, the closing of the Transaction will cause such advisory agreements to terminate automatically in accordance with their respective terms. It is anticipated that the Board of Trustees of the Funds (the "Trustees") will consider new advisory agreements with the Adviser. If approved by the Trustees, the new agreements will be presented to the Funds' shareholders for approval, and, if so approved by shareholders, will take effect upon the closing of the Transaction or such later time as shareholder approval is obtained.

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