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

SCHEDULE 13G

Under the Securities Exchange Act of 1934

(Amendment No. ____)

SIMON PROPERTY GROUP, INC.
(Name of Issuer)
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Common Stock
(Title of Class of Securities)
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828806109
(CUSIP Number)
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December 31, 1999
(Dates of Event Which Requires Filing of this Statement)
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Check the appropriate box to designate the rule pursuant to
which this Schedule is filed:

/x/ Rule 13d-1(b)
/x/ Rule 13d-1(c)
/ / 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).

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

Page 1 of 8 pages


Cusip 828806109

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

UBS Brinson, Inc.
13-2725861
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2
Check the Appropriate Box if a Member of a Group (See
Instructions)
a   / /
b   /x/   See Item 8 of attached schedule.
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3
SEC USE ONLY
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4
Citizenship or Place of Organization - New York
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Number of       5.  Sole Voting Power           ___9,230,932
Shares Bene-    6.  Shared Voting Power         ____________
ficially        7.  Sole Dispositive Power      ____________
Owned by Each   8.  Shared Dispositive Power       9,230,932
Reporting
Person With:
- -----------------------------------------------------------
9
Aggregate Amount Beneficially Owned by Each Reporting Person
9,230,932 Shares  *
- -----------------------------------------------------------
10
Check if the Aggregate Amount in Row (9) Excludes Certain
Shares (See Instructions)
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11
Percent of Class Represented by Amount in Row (9)
Approximately
5.4%
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12
Type of Reporting Person (See Instructions)
IA
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* UBS Brinson, Inc. disclaims beneficial ownership of such
securities.

Page 2 of 8 pages



Cusip 828806109

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

UBS AG
98-0186363
- -----------------------------------------------------------
2
Check the Appropriate Box if a Member of a Group (See
Instructions)
a   / /
b   /x/ See Item 8 of attached schedule.
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3
SEC USE ONLY
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4
Citizenship or Place of Organization - Switzerland
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Number of       5.  Sole Voting Power           ___9,230,932
Shares Bene-    6.  Shared Voting Power         ____________
ficially        7.  Sole Dispositive Power      ____________
Owned by Each   8.  Shared Dispositive Power       9,230,932
Reporting
Person With:
- -----------------------------------------------------------
9
Aggregate Amount Beneficially Owned by Each Reporting Person
9,230,932 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)
Approximately
5.4%
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12
Type of Reporting Person (See Instructions)
BK See Item 3 of attached schedule.
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* UBS AG disclaims beneficial ownership of such securities.

Page 3 of 8 pages




Cusip 828806109

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

Kuwait Investment Authority
N/A
- -----------------------------------------------------------
2
Check the Appropriate Box if a Member of a Group (See
Instructions)
a   / /
b   /x/   See Item 8 of attached schedule.
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3
SEC USE ONLY
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4
Citizenship or Place of Organization - Kuwait
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Number of       5.  Sole Voting Power              9,230,932
Shares Bene-    6.  Shared Voting Power         ____________
ficially        7.  Sole Dispositive Power      ____________
Owned by Each   8.  Shared Dispositive Power       9,230,932
Reporting
Person With:
- -----------------------------------------------------------
9
Aggregate Amount Beneficially Owned by Each Reporting Person
9,230,932 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)
Approximately 5.4%
- -----------------------------------------------------------
12
Type of Reporting Person (See Instructions)
OO See Item 3 of attached schedule.
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Page 4 of 8 pages





Cusip 828806109


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Item 1(a).  Name of Issuer:
SIMON PROPERTY GROUP, INC.

Item 1(b).  Address of Issuer's Principal Executive Offices:
National City Garden
115 West Washington Street
Suite 15 East
Indianapolis, IN  46204
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Item 2(a) Name of Persons Filing:
UBS Brinson, Inc.("UBS Brinson"), UBS AG ("UBSAG") and Kuwait
Investment Authority ("KIA").
Item 2(b) Address of Principal Business Office or, if none,
Residence:
UBS Brinson's principal business office is located at:
10 E. 50th Street, New York, NY  10022
UBSAG's principal business office is located at:
Bahnhofstrasse 45
8021, Zurich, Switzerland
KIA's principal business office is located at:
Ministries Complex, Block No. 3
Third Floor
Kuwait - State of Kuwait

Item 2(c) Citizenship:
Incorporated by reference to Item 4 of the cover pages.

Item 2(d) Title of Class of Securities:
Common Stock (the " Common Stock")

Item 2(e) CUSIP Number:
828806109
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Item 3.  Type of Person Filing:
UBS Brinson is an Investment Adviser registered under section
203 of the Investment Advisers Act of 1940. UBS AG is
classified as a Bank as defined in section 3(a)(6) of the Act
pursuant to no action relief granted by the staff of the
Securities and Exchange Commission.  KIA, a Kuwaiti public
authority established under Kuwaiti Law No. 47/1982 solely
for the purpose of managing, in the name of the Government of
Kuwait, the investment of the State of Kuwait, is a "passive
investor" as that term is used to describe filers under Rule
13d-1(c).
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Item 4 (a)-(c)(iv).  Ownership:
Incorporated by reference to Items 5-11 of the cover pages.
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Page 5 of 8 pages
Cusip 828806109

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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 / /.
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Item 6.  Ownership of More than Five Percent on Behalf of
Another Person:
An account managed on behalf of KIA on a discretionary basis
by UBS has the right to receive or the power to direct the
receipt of dividends from, or the proceeds from the sale of,
the Common Stock and holds in excess of 5 percent of the
outstanding Common Stock.
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Item 7.  Identification and Classification of the Subsidiary
Which Acquired the Security Being Reported on By the Parent
Holding Company:
[See item 3 above]
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Item 8 Identification and Classification of Members of the
Group:
UBS Brinson is an indirect wholly-owned subsidiary of UBS AG.
UBS AG is reporting indirect beneficial ownership of holdings
by reason of its ownership of UBS Brinson and UBS (USA) Inc.,
a parent holding company of UBS Brinson.  UBS AG does not
hereby affirm the existence of a group within the meaning of
Rule 13d-5(b)(1).  KIA appointed UBS as an investment adviser
to manage its account holding the subject shares in December
of 1998.
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Item 9 Notice of Dissolution of Group:
Not Applicable
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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 are 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 8 pages



Cusip 828806109


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.

Date:  February 14, 2000

By:/s/ Mark F. Kemper       By:/s/ James M. Hnilo
       Mark F. Kemper              James M. Hnilo
       Secretary                   Assistant Secretary

UBS AG

By:  /s/ Robert C. Dinerstein      By:/s/Robert B. Mills
         Robert C. Dinerstein            Robert B. Mills
         Managing Director               Managing Director

Kuwait Investment Authority

By:  /s/ Sheikh Salem Abdullah Al-Sabah
Sheikh Salem Abdullah Al-Sabah
Chief Investment Officer - American Investment Dept.
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Page 7 of 8 pages





Cusip 828806109


EXHIBIT 1
AGREEMENT TO MAKE A JOINT FILING

UBS Brinson, Inc., UBS AG and Kuwait Investment Authority
each agrees that this Schedule 13G (including all amendments
thereto) is filed by and on behalf of each such party.

Date:  February 14, 2000

By:/s/ Mark F. Kemper       By:/s/ James M. Hnilo
       Mark F. Kemper              James M. Hnilo
       Secretary                   Assistant Secretary

UBS AG

By:  /s/ Robert C. Dinerstein      By:/s/Robert B. Mills
         Robert C. Dinerstein            Robert B. Mills
         Managing Director               Managing Director

Kuwait Investment Authority

By:  /s/ Sheikh Salem Abdullah Al-Sabah
Sheikh Salem Abdullah Al-Sabah
Chief Investment Officer - American Investment Dept.
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Page 8 of 8 pages