FORM 13F

                               FORM 13F COVER PAGE

Report for the Calendar Year or Quarter Ended:  March 31, 2000

Report here if Amendment [  ]; Amendment Number:

This Amendment (Check only one.):   [   ] is a restatement.
                                    [   ] adds new holdings entries.

Institutional Investment Manager Filing this Report:

Name:       AT&T Investment Management Corporation ("ATTIMCO")
Address:    295 North Maple Avenue, Room 7202M2
            Basking Ridge, NJ 07920

13F File Number:  28-5552

The institutional  investment  manager filing this report and the person by whom
it is signed hereby  represent  that the person signing the report is authorized
to  submit  it,  that all  information  contained  herein is true,  correct  and
complete,  and  that it is  understood  that  all  required  items,  statements,
schedules, lists, and tables, are considered integral parts of this form.

Person Signing this Report on Behalf of Reporting Manager:

Name:    Lynn Carroll
Title:   Vice President and Chief Operating Officer
Phone:   908-221-2574

Signature, Place and Date of Signing:

Lynn Carroll      Basking Ridge, NJ         April   , 2000
- -------------     ------------------        --------------
[Signature]       [City, State]             [Date]


Report Type (Check only one.):

[X}               13F HOLDINGS REPORT.

[ ]               13F NOTICE.

[ ]               13F COMBINATION REPORT.

List of Other Managers Reporting for this Manager:   None

I AM SIGNING THIS REPORT AS REQUIRED BY THE SECURITIES EXCHANGE ACT OF 1934.



                              FORM 13F SUMMARY PAGE

Report Summary:
Number of Other Included Managers:       0
Form 13F Information Table Entry Total:  3
Form 13F Information Table Value Total:  $214,772.838


List of Other Included Managers:    None




                          FORM 13F INFORMATION TABLE


                                                                         
Name of            Title of                 Value          Shares/     Investment    Other    Voting Authority
Issuer             Class      Cusip         (x$1000)       Prn. Amt.   Discretion    Man.     Sole Shared None
- --------------     --------   -----         --------       --------    ----------    ------   ----------------
Taubman Centers,   Common     876664103     22,616.725     2,032,964   Sole                   Sole  2,032,964
Inc.
Simon Property     Common     828806109    152,101.152     6,337,548   Sole                   Sole  6,337,548
Group, Inc.
Simon Property     Pfd        828806406     40,054.962       578,411   Sole                   None    578,411
Group, Inc.        Conv.
                   Series B