# EDGAR Filing Document

**Accession Number:** 0000277751
**File Stem:** 0001193125-23-019359
**Filing Date:** 2023-1
**Character Count:** 11727
**Document Hash:** b1bf94b9ab868f8915af7d6c5f31780a
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-23-019359.hdr.sgml**: 20230131

**ACCESSION NUMBER**: 0001193125-23-019359

**CONFORMED SUBMISSION TYPE**: 497

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20230131

**DATE AS OF CHANGE**: 20230130

**EFFECTIVENESS DATE**: 20230131

**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:** 23569756

**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 Mid Cap Value Fund (Series ID: S000010471)

---

|  |  |  |
|:---|:---|:---|
| Class Name | Ticker Symbol | Class ID   |
| Class L    | JMIVX         | C000028927 |
| Class T    | JMCVX         | C000028928 |
| Class A    | JDPAX         | C000077673 |
| Class C    | JMVCX         | C000077674 |
| Class I    | JMVAX         | C000077675 |
| Class R    | JDPRX         | C000077676 |
| Class S    | JMVIX         | C000077677 |
| Class D    | JNMCX         | C000083518 |
| Class N    | JDPNX         | C000114873 |

---

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

---

|  |  |  |
|:---|:---|:---|
| Class Name | Ticker Symbol | Class ID   |
| Class L    | JSIVX         | C000028939 |
| 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 |

---

### Janus Henderson Small-Mid Cap Value Fund (Series ID: S000035097)

---

|  |  |  |
|:---|:---|:---|
| Class Name | Ticker Symbol | Class ID   |
| Class A    | JVSAX         | C000107973 |
| Class C    | JVSCX         | C000107974 |
| Class D    | JSVDX         | C000107975 |
| Class I    | JVSIX         | C000107976 |
| Class S    | JSVSX         | C000107977 |
| Class T    | JSVTX         | C000107978 |
| Class N    | JVSNX         | C000114893 |

---

### Janus Henderson International Opportunities Fund (Series ID: S000057601)

---

|  |  |  |
|:---|:---|:---|
| Class Name | Ticker Symbol | Class ID   |
| Class A    | HFOAX         | C000183883 |
| Class C    | HFOCX         | C000183884 |
| Class D    | HFODX         | C000183885 |
| Class I    | HFOIX         | C000183886 |
| Class N    | HFOSX         | C000183887 |
| Class R    | HFORX         | C000183888 |
| Class S    | HFOQX         | C000183889 |
| Class T    | HFOTX         | C000183890 |

---

## Series and Classes Contracts Data

### Janus Henderson Mid Cap Value Fund (Series ID: S000010471)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000028927 | Class L      | JMIVX           |
| C000028928 | Class T      | JMCVX           |
| C000077673 | Class A      | JDPAX           |
| C000077674 | Class C      | JMVCX           |
| C000077675 | Class I      | JMVAX           |
| C000077676 | Class R      | JDPRX           |
| C000077677 | Class S      | JMVIX           |
| C000083518 | Class D      | JNMCX           |
| C000114873 | Class N      | JDPNX           |

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

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000028939 | Class L      | JSIVX           |
| 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 Henderson Small-Mid Cap Value Fund (Series ID: S000035097)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000107973 | Class A      | JVSAX           |
| C000107974 | Class C      | JVSCX           |
| C000107975 | Class D      | JSVDX           |
| C000107976 | Class I      | JVSIX           |
| C000107977 | Class S      | JSVSX           |
| C000107978 | Class T      | JSVTX           |
| C000114893 | Class N      | JVSNX           |

### Janus Henderson International Opportunities Fund (Series ID: S000057601)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000183883 | Class A      | HFOAX           |
| C000183884 | Class C      | HFOCX           |
| C000183885 | Class D      | HFODX           |
| C000183886 | Class I      | HFOIX           |
| C000183887 | Class N      | HFOSX           |
| C000183888 | Class R      | HFORX           |
| C000183889 | Class S      | HFOQX           |
| C000183890 | Class T      | HFOTX           |

## Janus Investment Fund
Janus Henderson International Opportunities Fund

(the "Fund")

Supplement dated January 31, 2023

to Currently Effective Prospectuses

and Statement of Additional Information

On January 27, 2023, the Board of Trustees of the Fund approved an Agreement and Plan of Reorganization that provides for the merger of the Fund with and into Janus Henderson Overseas Fund (the "Acquiring Fund") (the "Merger").

The Merger is subject to certain conditions, including approval by shareholders of the Fund.

The Merger is expected to be tax-free for federal income tax purposes; therefore, Fund shareholders should not realize a tax gain or loss as a direct result of the Merger. The Merger, however, may accelerate distributions, which are taxable, as the tax year for the Fund will end on the date of the Merger. In connection with the Merger, shareholders of each class of shares of the Fund will receive shares of a corresponding class of the Acquiring Fund approximately equivalent in dollar value to the Fund shares owned immediately prior to the Merger. Investors who are Fund shareholders of record as of February 24, 2023, will receive a proxy statement/prospectus which includes important information regarding the Merger. Only Fund shareholders as of February 24, 2023, are eligible to vote on the Merger. Therefore, if you purchased shares of the Fund after February 24, 2023, and assuming shareholders of the Fund as of that date approve the Merger, any shares of the Fund you hold as of the Merger closing date will automatically be converted into shares of the Acquiring Fund.

Effective on or about February 13, 2023, the Funds will no longer accept investments by new shareholders. Until such time as the Merger is implemented, existing shareholders of the Fund may continue to purchase shares of the Fund, unless the Board of Trustees determines to limit future investments to ensure a smooth transition of shareholder accounts or for any other reason. Shareholders of the Fund may redeem their shares or exchange their shares for shares of another Janus Henderson fund for which they are eligible to purchase at any time prior to the Merger. Any applicable contingent deferred sales charges ("CDSC") charged by the Fund will be waived for redemptions or exchanges through the date of the Merger. Exchanges by Class A shareholders into Class A Shares of another Janus Henderson fund are not subject to any applicable initial sales charge. Please check with your intermediary regarding other Janus Henderson funds and share classes offered through your intermediary.

A full description of the Acquiring Fund and the terms of the Merger will be contained in the proxy statement/prospectus that will be sent to shareholders of the Fund of record as of February 24, 2023. The Fund and the Acquiring Fund have similar investment objectives, principal investment strategies, and risks. The portfolio managers of the Acquiring Fund will continue to manage the Acquiring Fund if the Merger is approved, and the Acquiring Fund's stated investment objective and policies will not change as a result of the Merger. Janus Henderson Investors US LLC encourages you to read the proxy statement/prospectus when it is available as it contains important information regarding the Merger.

This supplement is not an offer to sell or a solicitation of an offer to buy shares of the Acquiring Fund, nor is it a solicitation of any proxy. For important information about fees, expenses, and risk considerations regarding the Acquiring Fund, please refer to the Acquiring Fund's prospectus and the proxy statement/prospectus relating to the Merger, when available, on file with the Securities and Exchange Commission.

\* \* \*

Shareholders of record as of February 24, 2023, are expected to receive a proxy statement/prospectus, notice of special meeting of shareholders, and proxy card, containing detailed information regarding shareholder proposals with respect to these and certain other matters. The shareholder meeting is expected to be held on or about May 18, 2023. If approved, the Merger will be effective on or about June 2, 2023, or as soon as practicable thereafter.

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

------

Janus Henderson Mid Cap Value Fund

Janus Henderson Small Cap Value Fund

Janus Henderson Small-Mid Cap Value Fund

(each, a "Fund" and collectively, the "Funds")

Supplement dated January 31, 2023

to Currently Effective Prospectuses

Effective immediately, the prospectuses for the Funds are amended as follows:

1. Under **" Additional Investment Strategies and General Portfolio Policies "** in the **Additional Information about the Funds** section of the Funds' prospectuses, the following paragraph is added:

**Consideration of ESG Factors** 

The portfolio managers of **Janus Henderson Mid Cap Value Fund, Janus Henderson Small Cap Value Fund,** and **Janus Henderson Small-Mid Cap Value Fund** may consider one or more environmental, social, or governance ("ESG") factors alongside other fundamental characteristics considered in the investment research process. In the portfolio managers' view, ESG factors, along with other attributes relevant to fundamental analysis, could potentially impact investment risk and/or returns. The identification of an ESG risk factor will not necessarily exclude a particular security or sector that, in a portfolio manager's view, is otherwise suitable for investment. To facilitate their assessment of ESG factors, the portfolio managers use a mix of third-party data and internally generated analyses and may engage directly with companies. ESG factors may or may not be relevant or considered for each and every investment decision depending on the portfolio managers' perspective. The portfolio managers may assess the relevance of ESG factors to their fundamental research process differently across issuers, sectors, regions, and asset classes.

2. Under **"Risks of the Funds"** in the **Additional Information about the Funds** section of the
Funds' prospectuses, the following paragraph is added:

***Portfolio Management Risk.*** The Funds are actively managed investment portfolios and are therefore subject to the risk that the investment strategies and research process employed for the Funds may fail to produce the intended results. A Fund may underperform its benchmark index or other mutual funds with similar investment objectives.

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