# EDGAR Filing Document

**Accession Number:** 0000277751
**File Stem:** 0001193125-23-073504
**Filing Date:** 2023-3
**Character Count:** 2965
**Document Hash:** f2ed1109a80377449bba117989529b51
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-23-073504.hdr.sgml**: 20230317

**ACCESSION NUMBER**: 0001193125-23-073504

**CONFORMED SUBMISSION TYPE**: 497

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20230317

**DATE AS OF CHANGE**: 20230317

**EFFECTIVENESS DATE**: 20230317

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** JANUS INVESTMENT FUND
- **CENTRAL INDEX KEY:** 0000277751
- **IRS NUMBER:** 840592523
- **STATE OF INCORPORATION:** MA

**FILING VALUES:**
- **FORM TYPE:** 497
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 002-34393
- **FILM NUMBER:** 23741410

**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 FUND /MD/
- **DATE OF NAME CHANGE:** 19870701

## Series and Classes Contracts Data

### Janus Henderson Small Cap Value Fund (Series ID: S000010480)

---

|  |  |  |
|:---|:---|:---|
| Class Name | Ticker Symbol | Class ID   |
| Class T    | JSCVX         | C000028940 |
| Class A    | JDSAX         | C000077705 |
| Class C    | JCSCX         | C000077706 |
| Class I    | JSCOX         | C000077707 |
| Class R    | JDSRX         | C000077708 |
| Class S    | JISCX         | C000077709 |
| Class D    | JNPSX         | C000083526 |
| Class N    | JDSNX         | C000114879 |

---

## Series and Classes Contracts Data

### Janus Henderson Small Cap Value Fund (Series ID: S000010480)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000028940 | Class T      | JSCVX           |
| C000077705 | Class A      | JDSAX           |
| C000077706 | Class C      | JCSCX           |
| C000077707 | Class I      | JSCOX           |
| C000077708 | Class R      | JDSRX           |
| C000077709 | Class S      | JISCX           |
| C000083526 | Class D      | JNPSX           |
| C000114879 | Class N      | JDSNX           |

## Janus Investment Fund
Janus Henderson Small Cap Value Fund

Class A Shares Class D Shares Class N Shares Class S Shares <br> Class C Shares Class I Shares Class R Shares Class T Shares

Supplement dated March 17, 2023

to Currently Effective Prospectuses

and Statement of Additional Information

On March 16, 2023, the Board of Trustees of Janus Investment Fund approved reopening **Janus Henderson Small Cap Value Fund** (the "Fund") to new investors, effective on or about April 17, 2023. Class L Shares of the Fund remain closed to new investors.

As a result, effective on or about April 17, 2023, all references to the Fund being closed to certain new investors are removed from the Prospectuses and Statement of Additional Information for Class A Shares, Class C Shares, Class D Shares, Class I Shares, Class N Shares, Class R Shares, Class S Shares, and Class T Shares.

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