1
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
                                   ----------
                                  SCHEDULE 13G
                                 (RULE 13D-102)

                  INFORMATION STATEMENT PURSUANT TO RULE 13D-1
                    UNDER THE SECURITIES EXCHANGE ACT OF 1934
                                (AMENDMENT NO. 1)

                                 BLACKROCK, INC.
                                 ---------------
                                (Name of Issuer)

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

                                    09247X101
                                    ---------
                                 (CUSIP Number)

                                December 31, 2000
                                -----------------
             (Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule
is filed:

[X] Rule 13d-1(b)
[ ] Rule 13d-1(c)
[ ] Rule 13d-1(d)

CUSIP No.  461915100                                           Page 1 of 6 Pages

         1)  Names of Reporting Persons
             IRS Identification No. Of Above Persons

                  The PNC Financial Services Group, Inc. (formerly, PNC Bank
                  Corp.)   25-1435979

         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    Pennsylvania

         Number of Shares           5)  Sole Voting Power             44,935,000

         Beneficially Owned         6)  Shared Voting Power                  -0-

         By Each Reporting          7)  Sole Dispositive Power        44,935,000

         Person With                8)  Shared Dispositive Power             -0-

         9)  Aggregate Amount Beneficially Owned by Each Reporting Person
                                                                      44,935,000

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

         11)  Percent of Class Represented by Amount in Row (9)             82.4

         12)  Type of Reporting Person   (See Instructions)                   HC


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                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
                                   ----------
                                  SCHEDULE 13G
                                 (RULE 13D-102)

                  INFORMATION STATEMENT PURSUANT TO RULE 13D-1
                    UNDER THE SECURITIES EXCHANGE ACT OF 1934
                                (AMENDMENT NO. 1)

                                 BLACKROCK, INC.
                                 ---------------
                                (Name of Issuer)

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

                                    09247X101
                                    ---------
                                 (CUSIP Number)

                                December 31, 2000
                                -----------------
             (Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule
is filed:

[X] Rule 13d-1(b)
[ ] Rule 13d-1(c)
[ ] Rule 13d-1(d)

CUSIP No.  461915100                                           Page 2 of 6 Pages

         1)  Names of Reporting Persons
             IRS Identification No. Of Above Persons

                  PNC Bancorp, Inc.   51-0326854

         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    Delaware

         Number of Shares           5)  Sole Voting Power             44,935,000

         Beneficially Owned         6)  Shared Voting Power                  -0-

         By Each Reporting          7)  Sole Dispositive Power        44,935,000

         Person With                8)  Shared Dispositive Power             -0-

         9)  Aggregate Amount Beneficially Owned by Each Reporting Person
                                                                      44,935,000

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

         11)  Percent of Class Represented by Amount in Row (9)             82.4

         12)  Type of Reporting Person   (See Instructions)                   HC


   3



                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
                                   ----------
                                  SCHEDULE 13G
                                 (RULE 13D-102)

                  INFORMATION STATEMENT PURSUANT TO RULE 13D-1
                    UNDER THE SECURITIES EXCHANGE ACT OF 1934
                                (AMENDMENT NO. 1)

                                 BLACKROCK, INC.
                                 ---------------
                                (Name of Issuer)

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

                                    09247X101
                                    ---------
                                 (CUSIP Number)

                                December 31, 2000
                                -----------------
             (Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule
is filed:

[X] Rule 13d-1(b)
[ ] Rule 13d-1(c)
[ ] Rule 13d-1(d)

CUSIP No.  461915100                                           Page 3 of 6 Pages

         1)  Names of Reporting Persons
             IRS Identification No. Of Above Persons

                  PNC Bank, National Association   22-1146430

         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    United States

         Number of Shares           5)  Sole Voting Power             44,935,000

         Beneficially Owned         6)  Shared Voting Power                  -0-

         By Each Reporting          7)  Sole Dispositive Power        44,935,000

         Person With                8)  Shared Dispositive Power             -0-

         9)  Aggregate Amount Beneficially Owned by Each Reporting Person
                                                                      44,935,000

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

         11)  Percent of Class Represented by Amount in Row (9)             82.4

         12) Type of Reporting Person (See Instructions)                      BK



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                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
                                   ----------
                                  SCHEDULE 13G
                                 (RULE 13D-102)

                  INFORMATION STATEMENT PURSUANT TO RULE 13D-1
                    UNDER THE SECURITIES EXCHANGE ACT OF 1934
                                (AMENDMENT NO. 1)

                                 BLACKROCK, INC.
                                 ---------------
                                (Name of Issuer)

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

                                    09247X101
                                    ---------
                                 (CUSIP Number)

                                December 31, 2000
                                -----------------
             (Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule
is filed:

[X] Rule 13d-1(b)
[ ] Rule 13d-1(c)
[ ] Rule 13d-1(d)

CUSIP No. 461915100                                            Page 4 of 6 Pages

         1)  Names of Reporting Persons
             IRS Identification No. Of Above Persons

                  PNC Asset Management, Inc.   51-0380821

         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    Delaware

         Number of Shares           5)  Sole Voting Power             44,935,000

         Beneficially Owned         6)  Shared Voting Power                  -0-

         By Each Reporting          7)  Sole Dispositive Power        44,935,000

         Person With                8)  Shared Dispositive Power             -0-

         9)  Aggregate Amount Beneficially Owned by Each Reporting Person
                                                                      44,935,000

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

         11)  Percent of Class Represented by Amount in Row (9)             82.4

         12)  Type of Reporting Person   (See Instructions)                   HC


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                                                               Page 5 of 6 Pages

ITEM 4 - OWNERSHIP:

The following information is as of December 31, 2000:

(a)  Amount Beneficially Owned:                                44,935,000 shares

(b)  Percent of Class:                                                      82.4

(c)  Number of shares to which such person has:
        (i)  sole power to vote or to direct the vote                 44,935,000
       (ii)  shared power to vote or to direct the vote                      -0-
      (iii)  sole power to dispose or to direct the disposition of    44,935,000
       (iv)  shared power to dispose or to direct the disposition of         -0-


ITEM 7 - IDENTIFICATION AND CLASSIFICATION OF THE SUBSIDIARY WHICH ACQUIRED THE
         SECURITY BEING REPORTED ON BY THE PARENT HOLDING COMPANY:

Included are the following subsidiaries of The PNC Financial Services Group,
Inc. (formerly, PNC Bank Corp.) - HC:

PNC Bancorp, Inc. - HC (wholly owned subsidiary of The PNC Financial Services
Group, Inc.)

PNC Bank, National Association - BK (wholly owned subsidiary of PNC Bancorp,
Inc.)

PNC Asset Management, Inc. - HC (indirectly owned subsidiary of PNC Bank,
National Association)


ITEM 10 - CERTIFICATION:

         By signing below I certify that, to the best of my knowledge and
belief, the securities referred to above were acquired and held in the ordinary
course of business and 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.


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                                                               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.

February 12, 2001
------------------------------------
Date

By: /s/ Robert L. Haunschild
------------------------------------
Signature - The PNC Financial Services Group, Inc.
Robert L. Haunschild, Senior Vice President and Chief Financial Officer
-----------------------------------------------------------------------
Name & Title

February 12, 2001
------------------------------------
Date

By: /s/ James B. Yahner
------------------------------------
Signature - PNC Bancorp, Inc.
James B. Yahner, Vice President
-------------------------------
Name & Title

February 12, 2001
------------------------------------
Date

By: /s/ Thomas R. Moore
------------------------------------
Signature - PNC Bank, National Association
Thomas R. Moore, Secretary
--------------------------
Name & Title

February 12, 2001
------------------------------------
Date

By: /s/ Robert L. Haunschild
------------------------------------
Signature - PNC Asset Management, Inc.
Robert L. Haunschild, President
-------------------------------
Name & Title


                     AN AGREEMENT TO FILE A JOINT STATEMENT
                WAS PREVIOUSLY FILED AS EXHIBIT A TO SCHEDULE 13G