POWER OF ATTORNEY
       	The undersigned hereby constitutes and appoints Dennis P. McNamara and
Jenny Chan, or either of them, the undersigned's true and lawful attorney-in-
fact to:
      (1)	prepare, execute in the undersigned's name and on the
undersigned's behalf, and submit to the U.S. Securities and Exchange Commission
(the "SEC") a Form ID, including amendments thereto, and any other documents
necessary or appropriate to obtain codes and passwords enabling the undersigned
to make electronic filings with the SEC of reports required by Section 16(a) of
the Securities Exchange Act of 1934, as amended (the "Exchange Act"), or any
rule or regulation of the SEC;
      (2)	execute for and on behalf of the undersigned, in the
undersigned's capacity as an officer and/or director of Oppenheimer Holdings
Inc. (the "Company"), Forms 3, 4 and 5 in accordance with Section 16(a) of
the Exchange Act, and the rules and regulations thereunder;
      (3)	do and perform any and all acts for and on behalf of the
undersigned that may be necessary or desirable to complete and execute any such
Forms 3, 4 and 5 and timely file any such forms with the SEC and any stock
exchange or similar authority; and
      (4)	take any other action of any type whatsoever in connection with
the foregoing which, in the opinion of such attorney-in-fact, may be of benefit
to, in the best interest of, or legally required by, the undersigned, it being
understood that the documents executed by such attorney-in-fact on behalf of
the undersigned pursuant to this Power of Attorney shall be in such form and
shall contain such terms and conditions as such attorney-in-fact may approve
in such attorney-in-fact's discretion.
      The undersigned hereby grants to each such attorney-in-fact full power
and authority to do and perform each and every act and thing whatsoever
requisite, necessary or proper to be done in the exercise of any of the rights
and powers
herein granted, as fully to all intents and purposes as the undersigned might
or could do if personally present, with full power of substitution and
revocation, hereby ratifying and confirming all that each such attorney-in-
fact, or each such attorney-in-fact's substitute or substitutes, shall lawfully
do or cause to be done by virtue of this Power of Attorney and the rights and
powers herein granted.  The undersigned acknowledges that each of the foregoing
attorneys-in-fact, in serving in such capacity at the request of the
undersigned, are not assuming, nor is the Company assuming, any of the
undersigned's responsibilities to comply with Section 16 of the Exchange Act.
      The undersigned agrees that each such attorney-in-fact may rely entirely
on information furnished orally or in writing by the undersigned to each such
attorney-in-fact.  The undersigned also agrees to indemnify and hold harmless
the Company and each such attorney-in-fact against any losses, claims, damages
or liabilities (or actions in these respects) that arise out of or are based
on any untrue statement or omission of necessary facts in the information
provided by the undersigned to such attorney-in-fact for purposes of executing,
 acknowledging, delivering and filing Forms 3, 4 or 5 (including amendments
thereto) and agrees to reimburse the Company and each such attorney-in-fact
for any legal or other expenses reasonably incurred in connection with
investigating or defending against any such loss, claim, damage, liability
or action.
	This Power of Attorney shall remain in full force and effect until the
undersigned is no longer required to file Forms 3, 4 and 5 with respect to the
undersigned's holdings of and transactions in securities issued by the
Company, unless earlier revoked by the undersigned in a signed writing
delivered to the foregoing attorneys-in-fact.
      IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney
to be executed as of this 14th day of May, 2018.

/s/ William J. Ehrhardt
Name: William J. Ehrhardt