Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

[ ]   Rule 13d-1(b)
[X] Rule 13d-1(c)
[ ]   Rule 13d-1(d)

*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 disclosures provided in a prior cover page.

The information required on 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 ("Act") 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).

Item 1(a) Name of Issuer

FXCM Inc.

Item 1(b) Address of Issuer's Principal Executive Offices
32 Old Slip, New York, NY 10005

Item 2(a) Name of Person Filing
This Schedule 13G/A is being jointly filed by Citadel Advisors LLC (“Citadel Advisors”), Citadel Holdings II LP (“CH-II”), Citadel Investment Group II, L.L.C. (“CIG-II”) and Mr. Kenneth Griffin (collectively with Citadel Advisors, CH-II and CIG-II, the “Reporting Persons”) with respect to shares of Common Stock of the above-named issuer owned by Surveyor Capital Ltd., a Cayman Islands limited company (“SC”), and Citadel Securities LLC, a Delaware limited liability company (“Citadel Securities”).

Item 2(b) Address of Principal Business Office
The address of the principal business office of each of the Reporting Persons is c/o Citadel LLC, 131 S. Dearborn Street, 32nd Floor, Chicago, Illinois 60603.

Item 2(c) Citizenship
Each of Citadel Advisors and CIG-II is organized as a limited liability company under the laws of the State of Delaware. CH-II is organized as a limited partnership under the laws of the State of Delaware. Mr. Griffin is a U.S. citizen.

Item 2(d) Title of Class of Securities
Common Stock, $0.01 par value

Item 2(e) CUSIP Number
302693106

Item 3 If this statement is filed pursuant to Rules 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) [__] 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 filing as a non-U.S. institution in accordance with Rule 13d-1(b)(1)(ii)(J), please specify the type of institution: ____________.

Item 4 Ownership

A. Citadel Advisors LLC

B. Citadel Holdings II LP

C. Citadel Investment Group II, L.L.C.

D. Kenneth Griffin

(c) Number of shares as to which such person has:

Item 5 Ownership of Five Percent or Less of a Class
If this statement is being filed to report the fact that as of the date hereof the reporting person has ceased to be the beneficial owner of more than 5 percent of the class of securities, check the following [X].

Item 6 Ownership of More than Five Percent on Behalf of Another Person

Item 7 Identification and Classification of the Subsidiary which Acquired the Security Being Reported on by the Parent Holding Company

Item 8 Identification and Classification of Members of the Group

Item 9 Notice of Dissolution of Group

Item 10 Certification
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 that purpose or effect.

After reasonable inquiry and to the best of its knowledge and belief, the undersigned certify that the information set forth in this statement is true, complete and correct.

Dated this 14^th day of February, 2013.