SC 13G 1 aug200713gradian.txt SC 13G SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G (Rule 13d-102) UNDER THE SECURITIES EXCHANGE ACT OF 1934 INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO RULES 13d-1(b)(c), AND (d) AND AMENDMENTS THERETO FILED PURSUANT TO RULE 13d-2(b) RADIAN GROUP INC. -------------------------------------------------------------------------------- (Name of Issuer) COMMON SHARES -------------------------------------------------------------------------------- (Title of Class of Securities) 750236101 -------------------------------------------------------------------------------- (CUSIP Number) AUGUST 16, 2007 -------------------------------------------------------------------------------- (Date of Event Which Requires this 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) ---------- (1) 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 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). (SC13G-07/98) CUSIP No. 750236101 13G Page 2 of 18 Pages ________________________________________________________________________________ 1. NAME OF REPORTING PERSONS I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY) AIC Limited ________________________________________________________________________________ 2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [_] (b) [x] ________________________________________________________________________________ 3. SEC USE ONLY ________________________________________________________________________________ 4. CITIZENSHIP OR PLACE OF ORGANIZATION Incorporated under the laws of Ontario, Canada ________________________________________________________________________________ NUMBER OF 5. SOLE VOTING POWER SHARES Nil _________________________________________________________________ BENEFICIALLY 6. SHARED VOTING POWER OWNED BY 10,776,867* _________________________________________________________________ EACH 7. SOLE DISPOSITIVE POWER REPORTING Nil _________________________________________________________________ PERSON 8. SHARED DISPOSITIVE POWER WITH 10,776,867* ________________________________________________________________________________ 9. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 10,776,867* ________________________________________________________________________________ 10. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* Not applicable [_] ________________________________________________________________________________ 11. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 13.4% of outstanding Common Shares* ________________________________________________________________________________ 12. TYPE OF REPORTING PERSON* CO ________________________________________________________________________________ *SEE INSTRUCTIONS BEFORE FILLING OUT! * See item 2(a) of this filing CUSIP No. 750236101 13G Page 3 of 18 Pages ________________________________________________________________________________ 1. NAME OF REPORTING PERSONS I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY) AIC Investment Services Inc. ________________________________________________________________________________ 2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [_] (b) [x] ________________________________________________________________________________ 3. SEC USE ONLY ________________________________________________________________________________ 4. CITIZENSHIP OR PLACE OF ORGANIZATION Incorporated under the laws of Ontario, Canada ________________________________________________________________________________ NUMBER OF 5. SOLE VOTING POWER SHARES Nil _________________________________________________________________ BENEFICIALLY 6. SHARED VOTING POWER OWNED BY 10,776,867* _________________________________________________________________ EACH 7. SOLE DISPOSITIVE POWER REPORTING Nil _________________________________________________________________ PERSON 8. SHARED DISPOSITIVE POWER WITH 10,776,867* ________________________________________________________________________________ 9. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 10,776,867* ________________________________________________________________________________ 10. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* Not applicable [_] ________________________________________________________________________________ 11. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 13.4% of outstanding Common Shares* ________________________________________________________________________________ 12. TYPE OF REPORTING PERSON* CO ________________________________________________________________________________ *SEE INSTRUCTIONS BEFORE FILLING OUT! * See item 2(a) of this filing CUSIP No. 750236101 13G Page 4 of 18 Pages ________________________________________________________________________________ 1. NAME OF REPORTING PERSONS I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY) AIC Canadian Focused Fund ________________________________________________________________________________ 2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [_] (b) [x] ________________________________________________________________________________ 3. SEC USE ONLY ________________________________________________________________________________ 4. CITIZENSHIP OR PLACE OF ORGANIZATION Mutual fund trust organized under the laws of Ontario, Canada ________________________________________________________________________________ NUMBER OF 5. SOLE VOTING POWER SHARES Nil _________________________________________________________________ BENEFICIALLY 6. SHARED VOTING POWER OWNED BY 3,657,550* _________________________________________________________________ EACH 7. SOLE DISPOSITIVE POWER REPORTING Nil _________________________________________________________________ PERSON 8. SHARED DISPOSITIVE POWER WITH 3,657,550* ________________________________________________________________________________ 9. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 3,657,550* ________________________________________________________________________________ 10. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* Not applicable [_] ________________________________________________________________________________ 11. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 4.6% of outstanding Common Shares* ________________________________________________________________________________ 12. TYPE OF REPORTING PERSON* OO ________________________________________________________________________________ *SEE INSTRUCTIONS BEFORE FILLING OUT! * See item 2(a) of this filing CUSIP No. 750236101 13G Page 5 of 18 Pages ________________________________________________________________________________ 1. NAME OF REPORTING PERSONS I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY) AIC Canadian Focused Corporate Class ________________________________________________________________________________ 2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [_] (b) [x] ________________________________________________________________________________ 3. SEC USE ONLY ________________________________________________________________________________ 4. CITIZENSHIP OR PLACE OF ORGANIZATION Mutual fund trust organized under the laws of Ontario, Canada ________________________________________________________________________________ NUMBER OF 5. SOLE VOTING POWER SHARES Nil _________________________________________________________________ BENEFICIALLY 6. SHARED VOTING POWER OWNED BY 424,623* _________________________________________________________________ EACH 7. SOLE DISPOSITIVE POWER REPORTING Nil _________________________________________________________________ PERSON 8. SHARED DISPOSITIVE POWER WITH 424,623* ________________________________________________________________________________ 9. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 424,623* ________________________________________________________________________________ 10. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* Not applicable [_] ________________________________________________________________________________ 11. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 0.5% of outstanding Common Shares* ________________________________________________________________________________ 12. TYPE OF REPORTING PERSON* OO ________________________________________________________________________________ *SEE INSTRUCTIONS BEFORE FILLING OUT! * See item 2(a) of this filing CUSIP No. 750236101 13G Page 6 of 18 Pages ________________________________________________________________________________ 1. NAME OF REPORTING PERSONS I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY) AIC Canadian Balanced Fund ________________________________________________________________________________ 2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [_] (b) [x] ________________________________________________________________________________ 3. SEC USE ONLY ________________________________________________________________________________ 4. CITIZENSHIP OR PLACE OF ORGANIZATION Mutual fund trust organized under the laws of Ontario, Canada ________________________________________________________________________________ NUMBER OF 5. SOLE VOTING POWER SHARES Nil _________________________________________________________________ BENEFICIALLY 6. SHARED VOTING POWER OWNED BY 855,588* _________________________________________________________________ EACH 7. SOLE DISPOSITIVE POWER REPORTING Nil _________________________________________________________________ PERSON 8. SHARED DISPOSITIVE POWER WITH 855,588* ________________________________________________________________________________ 9. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 855,588* ________________________________________________________________________________ 10. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* Not applicable [_] ________________________________________________________________________________ 11. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 1.1% of outstanding Common Shares* ________________________________________________________________________________ 12. TYPE OF REPORTING PERSON* OO ________________________________________________________________________________ *SEE INSTRUCTIONS BEFORE FILLING OUT! * See item 2(a) of this filing CUSIP No. 750236101 13G Page 7 of 18 Pages ________________________________________________________________________________ 1. NAME OF REPORTING PERSONS I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY) AIC Canadian Balanced Corporate Class ________________________________________________________________________________ 2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [_] (b) [x] ________________________________________________________________________________ 3. SEC USE ONLY ________________________________________________________________________________ 4. CITIZENSHIP OR PLACE OF ORGANIZATION Mutual fund trust organized under the laws of Ontario, Canada ________________________________________________________________________________ NUMBER OF 5. SOLE VOTING POWER SHARES Nil _________________________________________________________________ BENEFICIALLY 6. SHARED VOTING POWER OWNED BY 101,097* _________________________________________________________________ EACH 7. SOLE DISPOSITIVE POWER REPORTING Nil _________________________________________________________________ PERSON 8. SHARED DISPOSITIVE POWER WITH 101,097* ________________________________________________________________________________ 9. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 101,097* ________________________________________________________________________________ 10. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* Not applicable [_] ________________________________________________________________________________ 11. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 0.1% of outstanding Common Shares* ________________________________________________________________________________ 12. TYPE OF REPORTING PERSON* OO ________________________________________________________________________________ *SEE INSTRUCTIONS BEFORE FILLING OUT! * See item 2(a) of this filing CUSIP No. 750236101 13G Page 8 of 18 Pages ________________________________________________________________________________ 1. NAME OF REPORTING PERSONS I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY) AIC American Focused Fund ________________________________________________________________________________ 2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [_] (b) [x] ________________________________________________________________________________ 3. SEC USE ONLY ________________________________________________________________________________ 4. CITIZENSHIP OR PLACE OF ORGANIZATION Mutual fund trust organized under the laws of Ontario, Canada ________________________________________________________________________________ NUMBER OF 5. SOLE VOTING POWER SHARES Nil _________________________________________________________________ BENEFICIALLY 6. SHARED VOTING POWER OWNED BY 3,597,566* _________________________________________________________________ EACH 7. SOLE DISPOSITIVE POWER REPORTING Nil _________________________________________________________________ PERSON 8. SHARED DISPOSITIVE POWER WITH 3,597,566* ________________________________________________________________________________ 9. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 3,597,566* ________________________________________________________________________________ 10. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* Not applicable [_] ________________________________________________________________________________ 11. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 4.5% of outstanding Common Shares* ________________________________________________________________________________ 12. TYPE OF REPORTING PERSON* OO ________________________________________________________________________________ *SEE INSTRUCTIONS BEFORE FILLING OUT! * See item 2(a) of this filing CUSIP No. 750236101 13G Page 9 of 18 Pages ________________________________________________________________________________ 1. NAME OF REPORTING PERSONS I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY) AIC American Focused Corporate Class ________________________________________________________________________________ 2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [_] (b) [x] ________________________________________________________________________________ 3. SEC USE ONLY ________________________________________________________________________________ 4. CITIZENSHIP OR PLACE OF ORGANIZATION Mutual fund trust organized under the laws of Ontario, Canada ________________________________________________________________________________ NUMBER OF 5. SOLE VOTING POWER SHARES Nil _________________________________________________________________ BENEFICIALLY 6. SHARED VOTING POWER OWNED BY 473,775* _________________________________________________________________ EACH 7. SOLE DISPOSITIVE POWER REPORTING Nil _________________________________________________________________ PERSON 8. SHARED DISPOSITIVE POWER WITH 473,775* ________________________________________________________________________________ 9. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 473,775* ________________________________________________________________________________ 10. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* Not applicable [_] ________________________________________________________________________________ 11. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 0.6% of outstanding Common Shares* ________________________________________________________________________________ 12. TYPE OF REPORTING PERSON* OO ________________________________________________________________________________ *SEE INSTRUCTIONS BEFORE FILLING OUT! * See item 2(a) of this filing CUSIP No. 750236101 13G Page 10 of 18 Pages ________________________________________________________________________________ 1. NAME OF REPORTING PERSONS I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY) AIC Dividend Income Fund ________________________________________________________________________________ 2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [_] (b) [x] ________________________________________________________________________________ 3. SEC USE ONLY ________________________________________________________________________________ 4. CITIZENSHIP OR PLACE OF ORGANIZATION Mutual fund trust organized under the laws of Ontario, Canada ________________________________________________________________________________ NUMBER OF 5. SOLE VOTING POWER SHARES Nil _________________________________________________________________ BENEFICIALLY 6. SHARED VOTING POWER OWNED BY 1,666,668* _________________________________________________________________ EACH 7. SOLE DISPOSITIVE POWER REPORTING Nil _________________________________________________________________ PERSON 8. SHARED DISPOSITIVE POWER WITH 1,666,668* ________________________________________________________________________________ 9. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 1,666,668* ________________________________________________________________________________ 10. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* Not applicable [_] ________________________________________________________________________________ 11. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 2.1% of outstanding Common Shares* ________________________________________________________________________________ 12. TYPE OF REPORTING PERSON* OO ________________________________________________________________________________ *SEE INSTRUCTIONS BEFORE FILLING OUT! * See item 2(a) of this filing CUSIP No. 750236101 13G Page 11 of 18 Pages 1. NAME OF REPORTING PERSONS I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY) Michael Lee-Chin ________________________________________________________________________________ 2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [_] (b) [x] ________________________________________________________________________________ 3. SEC USE ONLY ________________________________________________________________________________ 4. CITIZENSHIP OR PLACE OF ORGANIZATION Canadian ________________________________________________________________________________ NUMBER OF 5. SOLE VOTING POWER SHARES Nil _________________________________________________________________ BENEFICIALLY 6. SHARED VOTING POWER OWNED BY 10,776,867* _________________________________________________________________ EACH 7. SOLE DISPOSITIVE POWER REPORTING Nil _________________________________________________________________ PERSON 8. SHARED DISPOSITIVE POWER WITH 10,776,867* ________________________________________________________________________________ 9. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 10,776,867* ________________________________________________________________________________ 10. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* Not applicable [_] ________________________________________________________________________________ 11. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 13.4%* ________________________________________________________________________________ 12. TYPE OF REPORTING PERSON* IN ________________________________________________________________________________ *SEE INSTRUCTIONS BEFORE FILLING OUT! *See item 2(a) of this filing CUSIP No. 750236101 13G Page 12 of 18 Pages ________________________________________________________________________________ 1. NAME OF REPORTING PERSONS I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY) Portland Holdings Inc. ________________________________________________________________________________ 2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [_] (b) [x] ________________________________________________________________________________ 3. SEC USE ONLY ________________________________________________________________________________ 4. CITIZENSHIP OR PLACE OF ORGANIZATION Incorporated under the laws of Ontario, Canada ________________________________________________________________________________ NUMBER OF 5. SOLE VOTING POWER SHARES Nil _________________________________________________________________ BENEFICIALLY 6. SHARED VOTING POWER OWNED BY 10,776,867* _________________________________________________________________ EACH 7. SOLE DISPOSITIVE POWER REPORTING Nil _________________________________________________________________ PERSON 8. SHARED DISPOSITIVE POWER WITH 10,776,867* ________________________________________________________________________________ 9. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 10,776,867* ________________________________________________________________________________ 10. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* Not applicable [_] ________________________________________________________________________________ 11. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 13.4%* ________________________________________________________________________________ 12. TYPE OF REPORTING PERSON* CO ________________________________________________________________________________ *SEE INSTRUCTIONS BEFORE FILLING OUT! * See item 2(a) of this filing CUSIP No. 750236101 13G Page 13 of 18 Pages _______________________________________________________________________________ Item 1(a). Name of Issuer: Radian Group Inc. _______________________________________________________________________________ Item 1(b). Address of Issuer's Principal Executive Offices: 1601 Market Street, Philadelphia, Pennsylvania, 19103 ______________________________________________________________________________ Item 2(a). Name of Person Filing: AIC Limited (AIC) is a corporation incorporated under the laws of Ontario AICs wholly owned subsidiary AIC Investment Services Inc. (AISI) is the portfolio manager of certain accounts (including the Funds and other investment advisory accounts) and AIC is the manager and trustee of certain mutual funds in Ontario (collectively the Funds) which are owners of record of the securities of the Issuer. AISI is qualified to act as an investment adviser to the Funds in Ontario, Canada pursuant to a registration under the Securities Act Ontario. AISI is registered as an investment adviser under Section 203 of the Investment Advisers Act of 1940. AIC as trustee of the Funds, shares with the Funds the power to direct the voting and disposition of the shares of the Issuer held by the Funds. Michael Lee-Chin holds indirectly through his sole ownership of Portland Holdings Inc. approximately 95% of the voting equity securities of AIC and consequently he may be deemed under United States securities law to beneficially own the shares of the Issuer held by AIC as trustee of the Funds and by the Funds, although he disclaims beneficial ownership of such holding. Mr. Lee-Chin is a citizen and resident of Canada. _______________________________________________________________________________ Item 2(b). Address of Principal Business Office, or if None, Residence: 1375 Kerns Road, Burlington, Ontario, Canada L7R 4X8 _______________________________________________________________________________ Item 2(c). Citizenship: Michael Lee-Chin - Canadian AIC Limited - Incorporated under the laws of Ontario, Canada AIC Investment Services Inc. - Incorporated under the laws of Ontario, Canada AIC Corporate Fund Inc. - Incorporated under the laws of Ontario, Canada Portland Holdings Inc. - Incorporated under the laws of Ontario, Canada Funds - Certain mutual funds organized under the laws of Ontario, Canada _______________________________________________________________________________ Item 2(d). Title of Class of Securities: Common Shares _______________________________________________________________________________ Item 2(e). CUSIP Number 750236101 _______________________________________________________________________________ CUSIP No. 881908107 13G Page 14 of 18 Pages Item 3. If This Statement is Filed Pursuant to Rule 13d-1(b), or 13d-2(b) or (c), Check Whether the Person Filing is a: (a) [_] Broker or dealer registered under Section 15 of the Exchange Act. (b) [_] Bank as defined in Section 3(a)(6) of the Exchange Act. (c) [_] Insurance company as defined in Section 3(a)(19) of the Exchange Act. (d) [_] Investment company registered under Section 8 of the Investment Company Act. (e) [X] An investment adviser in accordance with Rule 13d-1(b)(1)(ii)(E); (f) [_] An employee benefit plan or endowment fund in accordance with Rule 13d-1(b)(1)(ii)(F); (g) [_] A parent holding company or control person in accordance with Rule 13d-1(b)(1)(ii)(G); (h) [_] A savings association as defined in Section 3(b) of the Federal Deposit Insurance Act; (i) [_] A church plan that is excluded from the definition of an investment company under Section 3(c)(14) of the Investment Company Act; (j) [_] Group, in accordance with Rule 13d-1(b)(1)(ii)(J). If this statement is filed pursuant to Rule 13d-1(c), check this box. [_] Item 4. Ownership. Provide the following information regarding the aggregate number and percentage of the class of securities of the issuer identified in Item 1. (a) Amount beneficially owned: 10,776,867* (b) Percent of class: 13.4%* (c) Number of shares as to which such person has: (i) Sole power to vote or to direct the vote Nil, (ii) Shared power to vote or to direct the vote 10,776,867*, (iii) Sole power to dispose or to direct the disposition of Nil, (iv) Shared power to dispose or to direct the disposition of 10,776,867* * See item 2(a) CUSIP No. 750236101 13G Page 15 of 18 Pages ________________________________________________________________________________ Item 5. Ownership of Five Percent or Less of a Class. Inapplicable ________________________________________________________________________________ Item 6. Ownership of More Than Five Percent on Behalf of Another Person. Inapplicable ________________________________________________________________________________ Item 7. Identification and Classification of the Subsidiary which acquired the Security Being Reported on by the Parent Holding Company. Inapplicable _______________________________________________________________________________ Item 8. Identification and Classification of Members of the Group. Inapplicable ________________________________________________________________________________ Item 9. Notice of Dissolution of Group. Inapplicable ________________________________________________________________________________ Item 10. Certifications. By signing below I certify that, to the best of my knowledge and belief, the securities referred to above 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 such purpose or effect. 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. September 4, 2007 AIC LIMITED By /s/Jonathan Wellum 09/04/2007 Jonathan Wellum, Date President AIC INVESTMENT SERVICES INC. By /s/Jonathan Wellum 09/04/2007 Jonathan Wellum, Date President CUSIP No. 750236101 13G Page 16 of 18 Pages AIC CORPORATE FUND INC. By /s/Jonathan Wellum 09/04/2007 Jonathan Wellum, Date President AIC LIMITED as trustee for the AIC CANADIAN FOCUSED FUND By /s/Jonathan Wellum 09/04/2007 Jonathan Wellum, Date President AIC LIMITED as trustee for the AIC CANADIAN BALANCED FUND By /s/Jonathan Wellum 09/04/2007 Jonathan Wellum, Date President AIC LIMITED as trustee for the AIC DIVIDEND INCOME FUND By /s/Jonathan Wellum 09/04/2007 Jonathan Wellum, Date President AIC LIMITED as trustee for the AIC AMERICAN FOCUSED FUND By /s/Jonathan Wellum 09/04/2007 Jonathan Wellum, Date President MICHAEL LEE-CHIN By /s/Jonathan Wellum 09/04/2007 Jonathan Wellum, Date President Under Power of Attorney dated March 14, 2003. PORTLAND HOLDINGS INC. By /s/Jonathan Wellum 09/04/2007 Jonathan Wellum, Date President Under Power of Attorney dated March 14, 2003. CUSIP No. 750236101 13G Page 17 of 18 Pages Attention. Intentional misstatements or omissions of fact constitute federal criminal violations (see 18 U.S.C. 1001). POWER OF ATTORNEY The undersigned does hereby appoint Jonathan Wellum and Victoria Ringelberg, and each of them, acting singly, with full power of substitution, as the true and lawful attorney of the undersigned, to sign on behalf of the undersigned in respect of the ownership or deemed ownership of equity securities held by the undersigned, directly or beneficially, and to be reported pursuant to sections 13(d) and 13(g) of the Securities and Exchange Act of 1934, as amended, and to execute joint filing agreements with respect to such filings. IN WITNESS WHEREOF, this Power of Attorney, has been executed as of the 14th day of March, 2003. /s/Michael Lee Chin Michael Lee Chin JOINT FILING AGREEMENT The persons named below agree to the joint filing on behalf of each of them of a Statement on Schedule 13G (including amendments thereto) with respect to the Common Shares of Radian Group Inc. and further agree that this Joint Filing Agreement be included as an Exhibit to such joint filings. In evidence thereof, the undersigned hereby execute this Agreement as of the 4th day of September, 2007. AIC LIMITED By /s/Jonathan Wellum Jonathan Wellum, President AIC INVESTMENT SERVICES INC. By /s/Jonathan Wellum Jonathan Wellum, President AIC CORPORATE FUND INC. By /s/Jonathan Wellum Jonathan Wellum, President CUSIP No. 750236101 13G Page 18 of 18 Pages AIC LIMITED as trustee for the AIC CANADIAN FOCUSED FUND By /s/Jonathan Wellum Jonathan Wellum, President AIC LIMITED as trustee for the AIC CANADIAN BALANCED FUND By /s/Jonathan Wellum Jonathan Wellum President AIC LIMITED as trustee for the AIC DIVIDEND INCOME FUND By /s/Jonathan Wellum Jonathan Wellum President AIC LIMITED as trustee for the AIC AMERICAN FOCUSED FUND By /s/Jonathan Wellum Jonathan Wellum, President MICHAEL LEE-CHIN By /s/Jonathan Wellum Jonathan Wellum, President Under Power of Attorney dated March 14, 2003. PORTLAND HOLDINGS INC. By /s/Jonathan Wellum Jonathan Wellum, President Under Power of Attorney dated March 14, 2003.