SEC 1745       Potential  persons  who  are  to  respond  to the  collection  of
(02-02)        information  contained  in this form are not  required to respond
               unless the form displays a currently valid OMB control number.




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



                                  SCHEDULE 13G


                    Under the Securities Exchange Act of 1934
                              (Amendment No: )*



                             Artio Global Investors Inc.
--------------------------------------------------------------------------------
                                (Name of Issuer)

                              Class A Common Stock
--------------------------------------------------------------------------------
                         (Title of Class of Securities)

                                   04315B107
--------------------------------------------------------------------------------
                                 (CUSIP Number)

                                December 31, 2012
--------------------------------------------------------------------------------
             (Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule
is filed:
[ ] Rule 13d-1(b)
[ ] Rule 13d-1(c)
[x] Rule 13d-1(d)

*The  remainder of this cover page shall be filled out for a reporting  person's
initial filing on this form with respect to the subject class of securities, and
for any  subsequent  amendment  containing  information  which  would  alter the
disclosures  provided  in a prior cover page.

The information required in the remainder of this cover page shall not be deemed
to be "filed" for the purpose of Section 18 of the  Securities  Exchange  Act of
1934 ("Act") or otherwise  subject to the liabilities of that section of the Act
but  shall be  subject  to all other  provisions  of the Act  (however,  see the
Notes).



CUSIP No. 04315B107

     1.   Names of Reporting Persons.
          I.R.S. Identification Nos. of above persons (entities only).

            GAM Holding AG
          -------------------
--------------------------------------------------------------------------------
     2.   Check the Appropriate Box if a Member of a Group (See Instructions)
          (a)      .............................................................
          (b)      .............................................................

     3.   SEC Use Only


     4.   Citizenship or Place of Organization

          Switzerland
          -----------

Number of               5.           Sole Voting Power
Shares  			      15,880,844  shares
Beneficially            6.           Shared Voting Power
Owned by
Each Reporting                       ----------
Person With*            7.           Sole Dispositive Power
				      15,880,844 shares
                        8.           Shared Dispositive Power

                                      ---------

     9. Aggregate Amount Beneficially Owned by Each Reporting Person

        15,880,844 shares
        ------------

     10. Check if the Aggregate  Amount in Row (9) Excludes  Certain Shares
     (See Instructions)

     11. Percent of Class Represented by Amount in Row (9)

          26.48% based on 59,983,543 outstanding Class A common shares
        ---------

     12. Type of Reporting Person (See Instructions)  HC
                                                     ----



Item 1.
        (a) Name of Issuer   Artio Global Investors Inc.
                             --------------

        (b) Address of Issuer's Principal Executive Offices
            330 Madison Avenue New York, NY 10017





Item 2.
        (a) Name of Person Filing
            GAM Holding AG
            --------------
            Address of Principal Business Office or, if none, Residence
        (b) Klaustrasse 10, 8034 Zurich, Switzerland
            ----------------------------------------

        (c) Citizenship
            Switzerland
            ------------

        (d) Title of Class of Securities
            Class A Common Stock
            --------------

        (e) CUSIP Number
            04315B107
            ----------

Item  3.  If  this  statement  is  filed  pursuant  to   ss.ss.240.13d-1(b)   or
          240.13d-2(b) or (c), check whether the person filing is a:

     [ ] (a)  Broker or dealer  registered  under  section  15 of the Act (15
          U.S.C. 78o).

     [ ] (b) Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c).

     [ ] (c) Insurance  company as defined in section 3(a)(19) of the Act (15
          U.S.C. 78c).

     [ ] (d) Investment  company registered under section 8 of the Investment
          Company Act of 1940 (15 U.S.C 80a-8).

     [ ] (e) An investment adviser in accordance
          withss.240.13d-1(b)(1)(ii)(E);

     [ ] (f) An  employee  benefit  plan  or  endowment  fund  in  accordance
          withss.240.13d-1(b)(1)(ii)(F);

     [ ] (g) A  parent  holding  company  or  control  person  in  accordance
          withss.240.13d-1(b)(1)(ii)(G);

     [ ] (h) A savings associations as defined in Section 3(b) of the Federal
          Deposit Insurance Act (12 U.S.C. 1813);

     [ ] (i) A  church  plan  that is  excluded  from  the  definition  of an
          investment  company under section  3(c)(14) of the Investment  Company
          Act of 1940 (15 U.S.C. 80a-3);

     [ ] (j) Group, in accordance withss.240.13d-1(b)(1)(ii)(J).




Item 4.       Ownership.

Provide the following  information regarding the aggregate number and percentage
of the class of securities of the issuer identified in Item 1.


                                

              (a)    Amount beneficially owned: 15,880,844 shares
                                                ---------
              (b)    Percent of class: 26.48% based on 59,983,543 outstanding Class A common shares


                                       -----
              (c)    Number of shares as to which the person has:

                     (i) Sole power to vote or to direct the vote	    	15,880,844 shares
                                                                           -------------
                     (ii) Shared power to vote or to direct the vote
                                                                           -------------
                     (iii) Sole power to dispose or to direct the 	    	15,880,844 shares
                          		                                  -------------

                     (iv) Shared power to dispose or to direct the
                          disposition of
                                                                           -------------


Item 5.       Ownership of Five Percent or Less of a Class

If this  statement  is being filed to report the fact that as of the date hereof
the  reporting  person has ceased to be the  beneficial  owner of more than five
percent of the class of securities, check the following [ ].

Item 6. Ownership of More than Five Percent on Behalf of Another Person.

Not applicable

Item 7.  Identification  and Classification of the Subsidiary Which Acquired the
Security Being Reported on By the Parent Holding Company or Control Person.

Not applicable


Item 8.       Identification and Classification of Members of the Group

Not Applicable

Item 9.       Notice of Dissolution of Group

Not Applicable






Item 10. Certification

           The following certification shall be included if the statement is
           filed pursuant to ss.240.13d-1(c): By signing below I certify that,
           to the best of my knowledge and belief, the securities referred to
           above were not acquired and are not held for the purpose of or with
           the effect of changing or influencing the control of the issuer of
           the securities and were not acquired and are not held in connection
           with or as a participant in any transaction having that purpose or
           effect.

                                    SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify
that the information set forth in this statement is true, complete and correct.

                                        February 13, 2013
                                     --------------------------------
                                                   Date

					/s/ Scott Sullivan
                                     --------------------------------
                                                Signature

			            Scott Sullivan, Group General Counsel
                                     --------------------------------
                                                Name/Title