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

                                  SCHEDULE 13D

                    UNDER THE SECURITIES EXCHANGE ACT OF 1934
                               (AMENDMENT NO. 5)*

                                   Yahoo! Inc.
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                                (Name of Issuer)

                    Common Stock, par value $0.001 per share
- --------------------------------------------------------------------------------
                         (Title of Class of Securities)

                                   984332-10-6
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                                 (CUSIP Number)

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        RONALD FISHER                               STEPHEN A. GRANT, ESQ.
    SOFTBANK HOLDINGS INC.                           SULLIVAN & CROMWELL
  10 LANGLEY ROAD, SUITE 403                           125 BROAD STREET
   NEWTON CENTER, MA 02159                            NEW YORK, NY 10004
        (617) 928-9300                                  (212) 558-4000
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            (Name, Address and Telephone Number of Person Authorized
                     to Receive Notices and Communications)

                                October 29, 1999
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             (Date of Event which Requires Filing of this Statement)

         If a filing person has previously  filed a statement on Schedule 13G to
report the acquisition  which is the subject of this Schedule 13D, and is filing
this schedule because of Rule 13d-1(b)(3) or (4), check the following box |_|.

         NOTE: Six copies of this statement,  including all exhibits,  should be
filed with the  Commission.  See Rule  13d-1(a) for other parties to whom copies
are to be sent.

*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
disclosures provided in a prior cover page.

The information required on 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).



                         (continued on following pages)
                                Page 1 of 8 Pages






                                       13D

- ---------------------                                         -----------------
CUSIP NO. 984332-10-6                                         PAGE 2 OF 8 PAGES
- ---------------------                                         -----------------
- -------------------------------------------------------------------------------
 1.  NAME OF REPORTING PERSONS
     S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS

        SOFTBANK America Inc.
- -------------------------------------------------------------------------------
 2.  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP                   (a) |_|
                                                                        (b) |_|
- -------------------------------------------------------------------------------
 3.  SEC USE ONLY

- -------------------------------------------------------------------------------
 4.  SOURCE OF FUNDS
        OO
- -------------------------------------------------------------------------------
 5.  CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO
     ITEM 2(d) OR 2(e)                                                     |_|
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 6.  CITIZENSHIP OR PLACE OF ORGANIZATION
        Delaware
- -------------------------------------------------------------------------------
  NUMBER OF      7.   SOLE VOTING POWER
   SHARES
BENEFICIALLY     --------------------------------------------------------------
  OWNED BY       8.   SHARED VOTING POWER
    EACH                 61,017,167
 REPORTING       --------------------------------------------------------------
   PERSON        9.   SOLE DISPOSITIVE POWER
    WITH
                 --------------------------------------------------------------
                 10.  SHARED DISPOSITIVE POWER
                         61,017,167
- -------------------------------------------------------------------------------
11.  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
        61,017,167
- -------------------------------------------------------------------------------
12.  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
                                                                            |_|
- -------------------------------------------------------------------------------
13.  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
        23.2%
- -------------------------------------------------------------------------------
14.  TYPE OF REPORTING PERSON
        HC, CO
- -------------------------------------------------------------------------------






                                       13D

- ---------------------                                         -----------------
CUSIP NO. 984332-10-6                                         PAGE 3 OF 8 PAGES
- ---------------------                                         -----------------
- -------------------------------------------------------------------------------
 1.  NAME OF REPORTING PERSONS
     S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS

        SOFTBANK Holdings Inc.
- -------------------------------------------------------------------------------
 2.  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP                   (a) |_|
                                                                        (b) |_|
- -------------------------------------------------------------------------------
 3.  SEC USE ONLY

- -------------------------------------------------------------------------------
 4.  SOURCE OF FUNDS
        AF
- -------------------------------------------------------------------------------
 5.  CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO
     ITEM 2(d) OR 2(e)                                                     |_|
- -------------------------------------------------------------------------------
 6.  CITIZENSHIP OR PLACE OF ORGANIZATION
        Delaware
- -------------------------------------------------------------------------------
  NUMBER OF      7.   SOLE VOTING POWER
   SHARES
BENEFICIALLY     --------------------------------------------------------------
  OWNED BY       8.   SHARED VOTING POWER
    EACH                 61,017,167
 REPORTING       --------------------------------------------------------------
   PERSON        9.   SOLE DISPOSITIVE POWER
    WITH
                 --------------------------------------------------------------
                 10.  SHARED DISPOSITIVE POWER
                         61,017,167
- -------------------------------------------------------------------------------
11.  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
        61,017,167
- -------------------------------------------------------------------------------
12.  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
                                                                            |_|
- -------------------------------------------------------------------------------
13.  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
        23.2%
- -------------------------------------------------------------------------------
14.  TYPE OF REPORTING PERSON
        HC, CO
- -------------------------------------------------------------------------------






                                       13D

- ---------------------                                         -----------------
CUSIP NO. 984332-10-6                                         PAGE 4 OF 8 PAGES
- ---------------------                                         -----------------
- -------------------------------------------------------------------------------
 1.  NAME OF REPORTING PERSONS
     S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS

        SOFTBANK Corp.
- -------------------------------------------------------------------------------
 2.  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP                   (a) |_|
                                                                        (b) |_|
- -------------------------------------------------------------------------------
 3.  SEC USE ONLY

- -------------------------------------------------------------------------------
 4.  SOURCE OF FUNDS
        AF
- -------------------------------------------------------------------------------
 5.  CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO
     ITEM 2(d) OR 2(e)                                                     |_|
- -------------------------------------------------------------------------------
 6.  CITIZENSHIP OR PLACE OF ORGANIZATION
        Japan
- -------------------------------------------------------------------------------
  NUMBER OF      7.   SOLE VOTING POWER
   SHARES
BENEFICIALLY     --------------------------------------------------------------
  OWNED BY       8.   SHARED VOTING POWER
    EACH                 61,122,167
 REPORTING       --------------------------------------------------------------
   PERSON        9.   SOLE DISPOSITIVE POWER
    WITH
                 --------------------------------------------------------------
                 10.  SHARED DISPOSITIVE POWER
                         61,122,167
- -------------------------------------------------------------------------------
11.  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
        61,122,167
- -------------------------------------------------------------------------------
12.  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
                                                                            |_|
- -------------------------------------------------------------------------------
13.  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
        23.2%
- -------------------------------------------------------------------------------
14.  TYPE OF REPORTING PERSON
        HC, CO
- -------------------------------------------------------------------------------






                                       13D

- ---------------------                                         -----------------
CUSIP NO. 984332-10-6                                         PAGE 5 OF 8 PAGES
- ---------------------                                         -----------------
- -------------------------------------------------------------------------------
 1.  NAME OF REPORTING PERSONS
     S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS

        Masayoshi Son
- -------------------------------------------------------------------------------
 2.  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP                   (a) |_|
                                                                        (b) |_|
- -------------------------------------------------------------------------------
 3.  SEC USE ONLY

- -------------------------------------------------------------------------------
 4.  SOURCE OF FUNDS
        AF
- -------------------------------------------------------------------------------
 5.  CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO
     ITEM 2(d) OR 2(e)                                                     |_|
- -------------------------------------------------------------------------------
 6.  CITIZENSHIP OR PLACE OF ORGANIZATION
        Japan
- -------------------------------------------------------------------------------
  NUMBER OF      7.   SOLE VOTING POWER
   SHARES
BENEFICIALLY     --------------------------------------------------------------
  OWNED BY       8.   SHARED VOTING POWER
    EACH                 61,122,167
 REPORTING       --------------------------------------------------------------
   PERSON        9.   SOLE DISPOSITIVE POWER
    WITH
                 --------------------------------------------------------------
                 10.  SHARED DISPOSITIVE POWER
                         61,122,167
- -------------------------------------------------------------------------------
11.  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
        61,122,167
- -------------------------------------------------------------------------------
12.  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
                                                                            |_|
- -------------------------------------------------------------------------------
13.  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
        23.2%
- -------------------------------------------------------------------------------
14.  TYPE OF REPORTING PERSON
        IN
- -------------------------------------------------------------------------------







         SOFTBANK America Inc., a Delaware corporation ("SB America"),  SOFTBANK
Holdings  Inc.,  a Delaware  corporation  ("SBH"),  SOFTBANK  Corp.,  a Japanese
corporation  ("SOFTBANK"),  and Mr. Masayoshi Son, a Japanese citizen ("Mr. Son"
and,  together with SB America,  SBH and  SOFTBANK,  the  "Reporting  Persons"),
hereby amend and supplement  the statement on Schedule 13D  previously  filed by
them, as heretofore amended and supplemented,  with respect to the Common Stock,
par value $0.001 per share (the "Common  Stock"),  of Yahoo!  Inc., a California
corporation (the "Issuer"),  beneficially  owned by them.  Except as amended and
supplemented  hereby,  the statement on Schedule 13D, as heretofore  amended and
supplemented, remains in full force and effect.


Item 5.  Interest in Securities of the Issuer.
         ------------------------------------

         The percentage  interest held by each Reporting  Person presented below
is based upon  263,240,287  shares of Common Stock reported as outstanding as of
October  31,  1999 in the  Issuer's  Form  10-Q  report  for the  quarter  ended
September 30, 1999.

         SB  America is a  wholly-owned  subsidiary  of SBH,  which in turn is a
wholly-owned  subsidiary  of  SOFTBANK.  Mr.  Son is  the  President  and  Chief
Executive  Officer of  SOFTBANK  and owns an  approximately  38.3%  interest  in
SOFTBANK.  Accordingly,  securities owned by SB America may be regarded as being
beneficially  owned by SBH;  securities  owned by SBH may be  regarded  as being
beneficially owned by SOFTBANK; and securities owned by SOFTBANK may be regarded
as being beneficially owned by Mr. Son.

         On October 29, 1999, 1,244,532 shares of Common Stock owned by SOFTBANK
Technology  Ventures IV L.P. and 25,397 shares of Common Stock owned by SOFTBANK
Technology  Advisers  Fund  L.P.  were  distributed  to the  partners  of  these
partnerships.  STV IV LLC,  the general  partner of each of these  partnerships,
received its pro rata share of these  distributions,  and it in turn distributed
the shares it received to its  members,  including  SB America as the owner of a
50% interest in STV IV LLC. As a result,  SB America  received  29,040 shares of
Common Stock which it now holds  directly,  and it no longer  beneficially  owns
indirectly  the 1,269,929  shares of Common Stock  previously  owned by SOFTBANK
Technology  Ventures  IV L.P.  and  SOFTBANK  Technology  Advisers  Fund L.P. In
addition,  on October 11, 1999 an option to  purchase  240,000  shares of Common
Stock at $3.125 per share  granted by SBH to an  executive  on December 13, 1996
was exercised to the extent of 30,000 shares of Common Stock.

         As of the date of the filing of this Statement, SB America beneficially
owns, and SBH, SOFTBANK and Mr. Son may be deemed to beneficially own through SB
America,  61,017,167  shares of Common Stock.  Eric  Hippeau,  a director of the
Issuer and Chairman and Chief Executive Officer of Ziff-Davis Inc., a subsidiary
of SBH,  holds options to purchase  210,000 of these shares at $3.3125 per share
and 67,680 of these shares at

                                Page 6 of 8 Pages







approximately  $10.97 per share,  and Ronald D.  Fisher,  Vice  Chairman of SBH,
holds  options to purchase  11,280 of these shares at  approximately  $10.97 per
share.  SOFTBANK  may be deemed to own an  additional  105,500  shares of Common
Stock by virtue of its ownership of all of the stock of SOFTBANK  Ventures Inc.,
a  Japanese  corporation,  which is the  "operating  principal"  under a "silent
partnership  agreement" (a so-called  tokumei kumiai keiyaku) under Japanese law
and has voting power and investment power over such 105,500 shares.  Mr. Son may
also be  deemed  to be an  indirect  beneficial  owner  of such  105,500  shares
beneficially  owned by SOFTBANK  by virtue of Mr.  Son's  ownership  interest in
SOFTBANK.  The total  beneficial  ownership  of SB  America  and SBH  amounts to
61,017,167 shares of Common Stock, which represents  approximately  23.2% of the
outstanding Common Stock, and the total beneficial ownership by SOFTBANK and Mr.
Son amounts to 61,122,167 shares of Common Stock, which represents approximately
23.2% of the outstanding Common Stock.


Item 7.  Material to be filed as Exhibits.
         --------------------------------

14.      Agreement  of Joint  Filing,  dated as of January  11,  1999,  among SB
         America, SBH, SOFTBANK,  Mr. Son and SOFTBANK Ventures,  Inc. (Filed as
         Exhibit 6 to Amendment  No. 1 to the Statement on Schedule 13D filed on
         January  12, 1999 by  SOFTBANK  and others  with  respect to the Common
         Stock of the Issuer and incorporated herein by reference.)

15.      Power of Attorney by SOFTBANK  and Mr. Son.  (Filed with  Statement  on
         Schedule  13G filed on  February  17,  1998 by  SOFTBANK,  Mr.  Son and
         SOFTBANK Ventures,  Inc. with respect to the Common Stock of Concentric
         Network Corporation and incorporated herein by reference.)



                                Page 7 of 8 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.

Dated:   November 23, 1999

                                             SOFTBANK AMERICA INC.



                                             By:  /s/ Stephen A. Grant
                                                ----------------------
                                                Secretary

                                             SOFTBANK HOLDINGS INC.



                                             By:  /s/ Stephen A. Grant
                                                ----------------------
                                                Secretary

                                             SOFTBANK CORP.



                                             By:  /s/ Stephen A. Grant
                                                ----------------------
                                                Attorney-in-fact

                                             MASAYOSHI SON



                                             By:  /s/ Stephen A. Grant
                                                ----------------------
                                                Attorney-in-fact


                                Page 8 of 8 Pages