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                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                                  SCHEDULE 14A

           Proxy Statement Pursuant to Section 14(a) of the Securities
              Exchange Act of 1934 (Amendment No. ______________ )

Filed by the Registrant [X]
Filed by a Party other than the Registrant [ ]

Check the appropriate box:

[ ] Preliminary Proxy Statement
[ ] CONFIDENTIAL, FOR USE OF THE COMMISSION ONLY (AS PERMITTED BY RULE
    14A-6(e)(2))
[ ] Definitive Proxy Statement
[X] Definitive Additional Materials
[ ] Soliciting Material Pursuant to Section 240.14a-12

                              JANUS INVESTMENT FUND
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               (Exact Name of Registrant as Specified in Charter)

                 151 Detroit Street, Denver, Colorado 80206-4805
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                    (Address of Principal Executive Offices)

                                  303-333-3863
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               (Registrant's Telephone No., including Area Code)

 Stephanie Grauerholz-Lofton -- 151 Detroit Street, Denver, Colorado 80206-4805
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                     (Name and Address of Agent for Service)

Payment of Filing Fee (check the appropriate box):

[X] No fee required.

[ ] Fee computed on table below per Exchange Act Rules 14a-6(i)(1) and 0-11.

         1) Title of each class of securities to which transaction applies:

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         2) Aggregate number of securities to which transaction applies:

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         3) Per unit price or other underlying value of transaction computed
pursuant to Exchange Act Rule 0-11 (set forth the amount on which the filing fee
is calculated and state how it was determined):

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         4) Proposed maximum aggregate value of transaction:

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         5) Total fee paid:

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[ ] Fee paid previously with preliminary materials.

[ ] Check box if any part of the fee is offset as provided by Exchange Act Rule
0-11(a)(2) and identify the filing for which the offsetting fee was paid
previously. Identify the previous filing by registration statement number, or
the Form or Schedule and the date of its filing.

         1) Amount Previously Paid:

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         2) Form, Schedule or Registration Statement No.:

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         3) Filing Party:

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         4) Date Filed:

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PERSONS WHO ARE TO RESPOND TO THE COLLECTION OF INFORMATION CONTAINED IN THIS
FORM ARE NOT REQUIRED TO RESPOND UNLESS THE FORM DISPLAYS A CURRENTLY VALID OMB
CONTROL NUMBER.
SEC 1913 (04-05)






                              D.F. KING & CO., INC.

                                TELEPHONE SCRIPT

                               JANUS RESEARCH FUND


INTRODUCTION

Hello, my name is ___________, calling from D.F. King & Co., Inc. on behalf of
JANUS RESEARCH FUND, may I speak with Mr./Ms. __________.

(Once Shareholder is on the line)

Hello Mr./Ms. _______________. Janus has retained D.F. King & Co. Inc. to help
solicit and record shareholder votes with regards to the proxy on the proposal
to change Janus Research Fund's benchmark index to the Morgan Stanley Capital
International World Growth Index instead of the Russell 1000 Index. The
shareholder meeting is scheduled to occur on December 14th.

PLEASE NOTE THAT WE ARE ON A RECORDED LINE FOR ACCURACY.

Have you received the proxy statement regarding the proposed benchmark index
change?

         IF NO -- Then help the shareholder obtain the material he/she requires.
         If a NOBO, give him/her the 800# and have them call back when they
         receive it. If registered, we will send the materials directly. In
         either case, make sure the address is correct, make any necessary
         corrections, and code the disposition as "14" or "15".

IF YES -- The Board of Trustees for Janus Research Fund recommends that you vote
in favor of the benchmark index change for Janus Research Fund as outlined in
the proxy statement. The benchmark index is used for purposes of calculating the
performance-based investment advisory fee the Fund pays to Janus Capital. For
your convenience you can cast your vote by mail, internet, or touch-tone
telephone if you have your proxy card or I can record your vote over the
telephone right now. Would you like to vote over the telephone now?

IF YES -- Go right to voting. (Begin the Vote section of script.)

         If shareholder asks how to vote via the internet, the website is
         www.2votefundproxy.com (NOBO -- www.proxyvote.com) - he/she will need
         the control number from his/her proxy card.

         If shareholder asks how to vote via touchtone telephone, the telephone
         number is 1--800-992-2416 (NOBO -- 1-800-454-8683) - he/she will need
         the control number from his/her proxy card.




Take time to answer all questions carefully. Do not give advice. Remind the
shareholder that his/her Fund's Board of Trustees has recommended that he/she
vote in favor of the proposal. Most questions can be addressed by referring to
the proxy statement and reading the appropriate sections.

         Here is how we will record your vote. I will ask you for 3 pieces of
         information for verification: your name, your address and ONLY the last
         4 digits of your social security number (or Tax Identification Number
         if shares are registered to an entity). Finally, I will confirm that
         you have received the proxy materials and then take your vote. You will
         be mailed a letter confirming your vote, which will tell you how to
         make any changes, if you wish. Is this process acceptable to you?

IF NO -- Do you have any questions that I may answer about this proxy for you?

         If yes, take time to answer all questions carefully. Also you can offer
         some of these reasons why the Board recommends a "FOR" vote:

              o   JANUS BELIEVES THE MORGAN STANLEY WORLD GROWTH INDEX IS A MORE
                  APPROPRIATE BENCHMARK FOR EVALUATING THE FUND'S PERFORMANCE
                  AND BETTER REFLECTS THE RESEARCH TEAM'S LONG-TERM EXPECTATIONS
                  OF LOCATING INVESTMENT OPPORTUNITIES THROUGHOUT THE WORLD.

              o   THE RESEARCH TEAM SELECTS INVESTMENTS FOR THE FUND, WHICH
                  REPRESENT THEIR HIGH CONVICTION INVESTMENT IDEAS IN ALL MARKET
                  CAPITALIZATIONS, STYLES, AND GEOGRAPHIES. WHILE THE FUND HAS
                  ALWAYS HAD THE ABILITY TO HAVE FOREIGN EXPOSURE AND WAS
                  EXPECTED TO HAVE SOME FOREIGN EXPOSURE AS MARKET CONDITIONS
                  PERMITTED, THE "BEST IDEAS" STRATEGY OF THE FUND COMBINED WITH
                  THE GLOBAL NATURE OF JANUS' RESEARCH HAVE RESULTED IN A HIGHER
                  EMPHASIS ON FOREIGN STOCKS AND A GLOBAL STRATEGY;

              o   THE PROPOSED BENCHMARK INDEX, THE MORGAN STANLEY WORLD GROWTH
                  INDEX, MEASURES THE PERFORMANCE OF GROWTH STOCKS OF DEVELOPED
                  COUNTRIES AROUND THE WORLD.

         Do not give advice. Most questions can be addressed by referring to the
         proxy statement and reading the appropriate sections or by referring to
         the Q&A that accompanied the proxy statement.

         At your earliest convenience, please vote by signing and dating the
         proxy card you received, and returning it in the envelope provided. You
         can also submit your vote by going on-line to www.2votefundproxy.com
         (NOBO -- www.proxyvote.com) or by calling 1-800-992-2416 (NOBO --
         1-800-454-8683). No matter how many shares you own, your vote is
         extremely important. Thank you for your time.




IF YES -- Are you ready?

BEGIN THE VOTE

Now I'll begin the voting process. First, I'll reintroduce myself. My name is
__________, calling from D.F. King & Co., Inc. on behalf of JANUS RESEARCH FUND.
Today's date is __________ and the time is __________.

May I please have your full name? If shareholder is an entity, may I please have
your title? Can you confirm that you are authorized to direct the voting of
these JANUS RESEARCH FUND shares?

May I please have your address?

May I have only the last 4 digits of your social security number? (If
shareholder is an entity, ask for Tax Identification Number)

Input the last 4 digits of the SSN. You may NOT proceed without this
information. If the shareholder refuses to give this information, explain that
it is for security purposes only, to assure that only the proper person can vote
his/her shares. However, if the shareholder continues to resist, you have no
choice but to politely end the call and remind him/her of the other methods
he/she can use to cast his/her vote.

Have you received the proxy materials?

ACTUAL VOTING

The Board of Trustees of Janus Research Fund recommends that you vote in favor
of the proposed benchmark index change for Janus Research Fund as outlined in
the proxy statement. Would you like to vote in favor of the proposal as
recommended by your Fund's Board?


         If you are required to read the proposal, end by saying, "YOUR FUND'S
         BOARD OF TRUSTEES RECOMMENDS THAT YOU VOTE IN FAVOR. HOW WOULD YOU LIKE
         TO VOTE?" For the proposal, the valid responses are

                  F = For proposal.

                  A = Against proposal.

                  B = Abstain.

CLOSING

I have recorded your vote. You have voted __________. Is that correct? As your
voting agent, I will execute a written proxy in accordance with your
instructions and forward it to Janus to be presented at the Special Meeting of
Shareholders. In the next 72 hours, we will mail you a letter by first class
mail confirming your vote. If you wish to change your vote for any reason,
please call us at the phone number listed in the letter. Thank you for your
time.




                               JANUS RESEARCH FUND

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                            ANSWERING MACHINE MESSAGE
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Hello, this is [name] calling from D.F. King & Co., Inc. on behalf of JANUS
RESEARCH FUND. You should have recently received proxy materials in the mail
concerning the SPECIAL MEETING OF SHAREHOLDERS OF JANUS RESEARCH FUND to be held
on DECEMBER 14, 2006.

Your vote is extremely important, please sign, date and return the proxy card at
your earliest convenience in the postage paid envelope provided.

If you prefer, and have a valid SSN on file with Janus, you can also vote by
Internet or touch-tone telephone by following the instructions included in the
mailing information.

If you have any questions regarding the information that you are being asked to
consider or need new proxy materials, please feel free to call D.F. King & Co.,
Inc. at (800) 628-8528 between the hours of 8:00 a.m. and 10:00 p.m. Eastern
Time, Monday through Friday, or 11:00 a.m. to 6:00 p.m. Eastern Time on
Saturday.

Thank you for your consideration.