Exhibit 24

POWER OF ATTORNEY

        Know all by these presents, that the undersigned hereby constitutes and appoints each
of Peter Ziemba, Sarah English and Amit Muni, signing singly, the undersigned's true and
lawful attorney-in-fact to:

(1)  execute for and on behalf of the undersigned, in the undersigned's capacity as an
officer and/or director of WisdomTree Investments, Inc. (the Company), Forms 3, 4 and 5
and amendments thereto in accordance with Section 16(a) of the Securities Exchange Act of
1934 and the rules thereunder;

(2)  do and perform any and all acts for and on behalf of the undersigned which may be
necessary or desirable to complete and execute any such Form 3, 4 or 5 and amendments
thereto and timely file such  form with the United States Securities and Exchange
Commission and any stock exchange or similar authority; and

(3)  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 any 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 or revocation, hereby ratifying and confirming all that such attorney-in-fact, or
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 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 Securities Exchange Act of
1934.

        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.  This Power of Attorney may
be filed with the United States Securities and Exchange Commission as a confirming
statement of the authority granted herein.

        IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to be
executed as of October 8, 2012.



/s/ Gregory Barton
Signature

Gregory Barton
Print Name