UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                              WASHINGTON, DC 20549

                                  SCHEDULE 13G

                    UNDER THE SECURITIES EXCHANGE ACT OF 1934





                     SILICON MOTION TECHNOLOGY CORPORATION
--------------------------------------------------------------------------------
                                (NAME OF ISSUER)




                                 ORDINARY SHARES
--------------------------------------------------------------------------------
                         (TITLE OF CLASS OF SECURITIES)




                                    82706C108
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                                 (CUSIP NUMBER)




                                FEBRUARY 7, 2008
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                          (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)
[X]      Rule 13d-1(c)
[_]      Rule 13d-1(d)


CUSIP NO. 82706C108                    13G                     PAGE 2 OF 6 PAGES

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1         NAME OF REPORTING PERSONS
          S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS

          ING Groep N.V.
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2         CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
                                                                        (a) [_]
          Not Applicable                                                (b) [_]
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3         SEC USE ONLY

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4         CITIZENSHIP OR PLACE OF ORGANIZATION

          The Netherlands
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                    5   SOLE VOTING POWER
                        1,984,703 (1)
NUMBER OF               --------------------------------------------------------
SHARES              6   SHARED VOTING POWER
BENEFICIALLY            0
OWNED BY EACH           --------------------------------------------------------
REPORTING           7   SOLE DISPOSITIVE POWER
PERSON WITH:            1,984,703 (1)
                        --------------------------------------------------------
                    8   SHARED DISPOSITIVE POWER
                        0
--------------------------------------------------------------------------------
9         AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

          1,984,703
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10        CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES

                                                                            [X]
          115,000 Custodian Shares
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11        PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

          6.05%
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12        TYPE OF REPORTING PERSON

          HC
--------------------------------------------------------------------------------

----------
(1)  70,200 of these shares are held by indirect subsidiaries of ING Groep N.V.
     in their role as a discretionary manager of client portfolios.



CUSIP NO. 82706C108                    13G                     PAGE 3 OF 6 PAGES

ITEM 1(a).          NAME OF ISSUER:

                    Silicon Motion Technology Corporation

ITEM 1(b).          ADDRESS OF ISSUER'S PRINCIPAL EXECUTIVE OFFICES:

                    No. 20-1, Taiyuan Street
                    Jhubei City
                    Hsinchu County F5 302
                    Taiwan

ITEM 2(a).          NAME OF PERSON FILING:

                    ING Groep N.V.

ITEM 2(b).          ADDRESS OF PRINCIPAL BUSINESS OFFICE OR, IF NONE, RESIDENCE:

                    Amstelveenseweg 500
                    1081 KL Amsterdam
                    P.O. Box 810
                    1000 AV Amsterdam
                    The Netherlands

ITEM 2(c).          CITIZENSHIP:

                    See item 4 on Page 2

ITEM 2(d).          TITLE OF CLASS OF SECURITIES:

                    Ordinary Shares

ITEM 2(e).          CUSIP NUMBER:

                    82706C108

ITEM 3.             IF THIS STATEMENT IS FILED PURSUANT TO RULES 13d-1(b), OR
                    13d-2(b) OR (c), CHECK WHETHER THE PERSON FILING IS A:
                    (Not Applicable)

         (a) [_]    Broker or dealer registered under Section 15 of the
                    Securities Exchange Act of 1934, as amended (the "Exchange
                    Act");

         (b) [_]    Bank as defined in Section 3(a)(6) of the Exchange Act;

         (c) [_]    Insurance company as defined in Section 3(a)(19) of the
                    Exchange Act;

         (d) [_]    Investment company registered under Section 8 of the
                    Investment Company Act of 1940, as amended (the "Investment
                    Company Act");

         (e) [_]    Investment adviser in accordance with Rule
                    13d-1(b)(1)(ii)(E) under the Exchange Act;




CUSIP NO. 82706C108                    13G                     PAGE 4 OF 6 PAGES



         (f) [_]    Employee benefit plan or endowment fund in accordance with
                    Rule 13d-1(b)(1)(ii)(F) under the Exchange Act;

         (g) [_]    Parent holding company or control person in accordance with
                    Rule 13d-1(b)(ii)(G) under the Exchange Act;

         (h) [_]    Savings association as defined in Section 3(b) of the
                    Federal Deposit Insurance Act;

         (i) [_]    Church plan that is excluded from the definition of an
                    investment company under Section 3(c)(14) of the Investment
                    Company Act;

         (j) [_]    Group in accordance with Rule 13d-1(b)(1)(ii)(J) under the
                    Exchange Act.

ITEM 4.             OWNERSHIP.

         (a) Amount beneficially owned:

                              See item 9 on Page 2

         (b) Percent of class:

                              See item 11 on Page 2

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

                      (i)     Sole power to vote or to direct the vote:

                              See item 5 on Page 2

                      (ii)    Shared power to vote or to direct the vote:

                              See item 6 on Page 2

                      (iii)   Sole power to dispose or to direct the disposition
                              of:

                              See item 7 on Page 2

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

                              See item 8 on Page 2

ITEM 5.             OWNERSHIP OF FIVE PERCENT OR LESS OF A CLASS.

                    Not Applicable




CUSIP NO. 82706C108                    13G                     PAGE 5 OF 6 PAGES

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.

                    By signing below we certify that, to the best of our
                    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.





CUSIP NO. 82706C108                    13G                     PAGE 6 OF 6 PAGES



                                    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.


                                         March 19, 2008
                                         ---------------------------------------
                                         (Date)


                                         ING GROEP N.V.


                                         By: /s/ Eric E. Ribbers
                                         ---------------------------------------
                                         (Signature)


                                         Eric E. Ribbers
                                         Senior Compliance Officer
                                         ---------------------------------------
                                         (Name/Title)

                                         /s/ Klaas de Wit
                                         ---------------------------------------
                                         (Signature)

                                         Klaas de Wit
                                         Head of Compliance Insiders
                                         ---------------------------------------
                                         (Name/Title)