UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
SCHEDULE 13G
Under the Securities Exchange Act of 1934*
AON Corporation
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(Name of Issuer)
Common Stock
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(Title of Class of Securities)
037389103
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(CUSIP Number)
December 31, 2001
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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:
[X] Rule 13d-1(b)
[_] 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).
Page 1 of 4 Pages
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CUSIP NO. 037389103 13G
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NAMES OF REPORTING PERSONS.
1 I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS
Barrow, Hanley, Mewhinney & Strauss, Inc.
752403190
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CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See Instructions)
2 (a) [_]
(b) [_]
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SEC USE ONLY
3
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CITIZENSHIP OR PLACE OF ORGANIZATION
4
A Nevada corporation
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SOLE VOTING POWER
5
NUMBER OF shares
SHARES -----------------------------------------------------------
SHARED VOTING POWER
BENEFICIALLY 6
shares
OWNED BY
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EACH SOLE DISPOSITIVE POWER
7
REPORTING shares
PERSON -----------------------------------------------------------
SHARED DISPOSITIVE POWER
WITH 8
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AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
9 shares
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CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES
10 (See Instructions)
[_]
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PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
11
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TYPE OF REPORTING PERSON (See Instructions)
12 IA
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Page 2 of 4 Pages
SCHEDULE 13G
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Item 1(a) Name of Issuer:
AON Corporation
1(b) Address of Issuer's Principal Executive Offices:
123 North Wacker Drive
Chicago, IL 60606
Item 2(a) Name of Person Filing:
Barrow, Hanley, Mewhinney & Strauss, Inc.
2(b) Address of Principal Business Office or, if none, Residence:
One McKinney Plaza
3232 McKinney Avenue, 15th Floor
Dallas, TX 75204-2429
2(c) Citizenship:
A Nevada corporation
2(d) Title of Class of Securities:
Common Stock
2(e) CUSIP Number:
037389103
Item 3. If this statement is filed pursuant to Rule 13d-1(b), or 13d-2(b):
The reporting person is an Investment Adviser registered
under Section 203 of the Investment Advisers Act of 1940.
Item 4. Ownership:
4(a) Amount beneficially owned:
shares
4(b) Percent of class:
4(c) Number of shares as to which the person has:
(i) Sole power to vote or to direct the vote:
shares
(ii) Shared power to vote or to direct the vote:
shares
(iii) Sole power to dispose or to direct the disposition of:
shares
(iv) Shared power to dispose or to direct the disposition of:
----
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: [X]
Page 3 of 4 Pages
Item 6. Ownership of More than Five Percent on Behalf of Another Person:
The right to receive or the power to direct the receipt of
dividends from, or the proceeds from the sale of, the common
stock is held by certain clients of the reporting person,
none of which has such right or power with respect to five
percent or more of the common stock.
Item 7. Identification and Classification of the Subsidiary which Acquired the
Security Being Reported on by the Parent Holding Company:
Not Applicable.
Item 8. Identification and Classification of Members of the Group:
Not Applicable.
Item 9. Notice of Dissolution of a Group:
Not Applicable.
Item 10. Certification:
By signing below the undersigned certifies that, to the best
of its knowledge and belief, the securities referred to above
were acquired in the ordinary course of business and were not
acquired for the purpose of and do not have the effect of
changing or influencing the control of the issuer of such
securities and were not acquired in connection with or as a
participant in any transaction having such purpose or effect.
After reasonable inquiry and to the best of its knowledge and belief, the
undersigned certifies that the information set forth in this statement is true,
complete and correct.
BARROW, HANLEY, MEWHINNEY & STRAUSS, INC.
By: /s/ James P. Barrow
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Name: James P. Barrow
Title: President
February 8, 2002
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Page 4 of 4 Pages