|10-Q - OPPENHEIMER HOLDINGS INC||sec311v3e.htm|
|EX-31 - OPPENHEIMER HOLDINGS INC||ex312.htm|
|EX-31 - OPPENHEIMER HOLDINGS INC||ex311.htm|
|EX-10 - INDENTURE - OPPENHEIMER HOLDINGS INC||ex101indenture.htm|
|EX-10 - REGISTRATION RIGHTS AGREEMENT - OPPENHEIMER HOLDINGS INC||ex102regrights.htm|
|EX-10 - SECURITY AGREEMENT - OPPENHEIMER HOLDINGS INC||ex103secagreemt.htm|
|EX-14 - CODE OF CONDUCT - OPPENHEIMER HOLDINGS INC||ex14codeconduct.htm|
CERTIFICATION PURSUANT TO
18 U.S.C. SECTION 1350
The undersigned, Albert G. Lowenthal, Chairman and Chief Executive Officer of Oppenheimer Holdings Inc. (the "Company"), and Elaine K. Roberts, President and Chief Financial Officer of the Company, hereby certify that to his/her knowledge the Quarterly Report on Form 10-Q for the quarter ended March 31, 2011 of the Company filed with the Securities and Exchange Commission on the date hereof (the Report) fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934 and the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company for the period specified.
Signed at New York, New York, this 5th day of May, 2011.
Albert G. Lowenthal
Chairman and Chief Executive Officer
Elaine K. Roberts
President and Chief Financial Officer