Ownership Submission
FORM 4
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
HAGERTY THOMAS
  2. Issuer Name and Ticker or Trading Symbol
MGIC INVESTMENT CORP [MTG]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
__X__ Director _____ 10% Owner
_____ Officer (give title below) _____ Other (specify below)
(Last)
(First)
(Middle)
C/O THOMAS H. LEE COMPANY, 75 STATE STREET
3. Date of Earliest Transaction (Month/Day/Year)
03/01/2005
(Street)

BOSTON, MA 02109
4. If Amendment, Date Original Filed(Month/Day/Year)
6. Individual or Joint/Group Filing(Check Applicable Line)
_X_ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3)
2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code
(Instr. 8)
4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)
5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4)
6. Ownership Form: Direct (D) or Indirect (I)
(Instr. 4)
7. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V Amount (A) or (D) Price
Common Stock 03/01/2005   A   1,027 (1) A (2) 9,708 D  

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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 3)
2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code
(Instr. 8)
5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4, and 5)
6. Date Exercisable and Expiration Date
(Month/Day/Year)
7. Title and Amount of Underlying Securities
(Instr. 3 and 4)
8. Price of Derivative Security
(Instr. 5)
9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 4)
10. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 4)
11. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Share Units (3) (4) 03/01/2005   A   3.2424     (5)   (5) Common Stock 3.2424 (6) 2,715.6111 D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
HAGERTY THOMAS
C/O THOMAS H. LEE COMPANY
75 STATE STREET
BOSTON, MA 02109
  X      

Signatures

 Dan D. Stilwell, Attorney-in-fact   03/01/2005
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1) Pursuant to the Issuer's 2002 Stock Incentive Plan, the reporting person is awarded one and one-half (1 1/2) shares of restricted common stock/restricted stock units for each share of phantom stock (referred to in footnotes below as "Share Units") acquired by the reporting person under such Plan. The restrictions on these shares of restricted common stock/restricted stock units generally terminate three years after the date of the award if the reporting person remains as a director of the Issuer during such time, or earlier if the reporting person's service as a director of the Issuer terminates earlier for certain other reasons.
(2) Awarded to the reporting person pursuant to the Issuer's 2002 Stock Incentive Plan and no price was paid by the reporting person.
(3) The reporting person participates in the MGIC Investment Corporation Deferred Compensation Plan for Non-Employee Directors under which units corresponding to shares of Common Stock of the Issuer ("Share Units") are acquired through compensation deferral. Dividends which would have been received on shares represented by Share Units are also invested in Share Units. The Share Units are settled in cash, generally at the time the reporting person ceases to be a Director of the Issuer.
(4) These Share Units do not have a specified dollar-denominated exercise or conversion price. (Their value is based, on a one-for-one basis, on the price of the Issuer's common stock on the New York Stock Exchange.)
(5) These Share Units do not become exercisable or expire on a fixed date. (Generally, the Share Units become payable at the time the reporting person ceases to be a Director of the Issuer.)
(6) These Share Units were acquired through phantom dividend reinvestment and no price was paid by the reporting person for the Share Units.
 
Remarks:
This Form 4 is being signed by the reporting person's attorney-in-fact pursuant to a previously filed power of attorney.

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.

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