Unassociated Document


CUSIP No. 042797100		13G


1)	NAMES OF REPORTING PERSONS IRS IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)	JGD Management Corp. EIN: 13-3633324

2)	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS)
		(a) o
		(b) x
3)	SEC USE ONLY

4)	CITIZENSHIP OR PLACE OF ORGANIZATION	Delaware


NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH	5) SOLE VOTING POWER	3,698,290

	6) SHARED VOTING POWER	-0-

	7) SOLE DISPOSITIVE POWER	3,698,290

	8) SHARED DISPOSITIVE POWER	-0-


9)	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON	3,698,290

10)	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)	[ ]

11)	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
	Approximately 9.3%

12)	TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)	CO

Page 2 of 7 Pages


Item 1(a).	Name of Issuer:	Arrowhead Research Corporation

Item 1(b).	Address of Issuer’s Principal Executive Offices:

	201 S. Lake Avenue, Suite 703
	Pasadena, California 91101


Item 2(a).	Name of Person Filing:

	This Schedule is being filed by JGD Management Corp. (“JGD”), a Delaware corporation, with respect to:

	(i) 571,618 shares of Common Stock (which consist of (a) 376,781 shares of Common Stock and (b) warrants to purchase 194,837 shares of Common Stock) directly owned by York Capital Management, L.P. (“York Capital”), a Delaware limited partnership;

	(ii) 2,477,884 shares of Common Stock (which consist of (a) 1,632,364 shares of Common Stock and (b) warrants to purchase 845,520 shares of Common Stock) directly owned by York Investment Limited (“York Investment”), a corporation of the Commonwealth of The Bahamas;

	(iii) 302,768 shares of Common Stock (which consist of (a) 242,214 shares of Common Stock and (b) warrants to purchase 60,554 shares of Common Stock) directly owned by York Select, L.P. (“York Select”), a Delaware limited partnership; and

	(iv) 346,020 shares of Common Stock (which consist of (a) 276,816 shares of Common Stock and (b) warrants to purchase 69,204 shares of Common Stock) directly owned by York Select Unit Trust (“York Select Trust”), a trust organized under the laws of the Cayman Islands.

	The general partners of York Capital and York Select and the managers of York Investment and York Select Trust have delegated certain management and administrative duties of such funds to JGD. Accordingly, JGD may be deemed to have beneficial ownership over the shares of Common Stock reported in this Schedule.

Page 3 of 7 Pages



Item 2(b).	Address of Principal Business Office or, if None, Residence:

	The principal business office address of JGD is:

	c/o York Capital Management
	767 Fifth Avenue
	17th Floor
	New York, New York 10153


Item 2(c).	Citizenship:

	The place of organization of JGD is Delaware.


Item 2(d).	Title of Class of Securities:	Common Stock, $0.001 par value


Item 2(e).	CUSIP Number:	042797100


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)o Broker or dealer registered under section 15 of the Act (15 U.S.C.78o).

(b)o Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c).

(c)o Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c).

(d)o Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C 80a-8).

(e)xAn investment adviser in accordance with §240.13d-1(b)(1)(ii)(E);

(f)o An employee benefit plan or endowment fund in accordance with §240.13d-1(b)(1)(ii)(F);

(g)o A parent holding company or control person in accordance with §240.13d-1(b)(1)(ii)(G);

(h)o A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);

(i)o A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);

(j)o Group, in accordance with §240.13d-1 (b)(1)(ii)(J).

Page 4 of 7 Pages




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:		3,698,290

(b) Percent of class:		9.3%

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

(i) Sole power to vote or to direct the vote		3,698,290

(ii) Shared power to vote or to direct the vote		-0-

(iii) Sole power to dispose or to direct the disposition of		3,698,290

(iv) Shared power to dispose or to direct the disposition of		-0-

___________________________________
The number of shares beneficially owned and the percentage of outstanding shares represented thereby for JGD have been computed in accordance with Rule 13d-3 under the Securities Exchange Act of 1934, as amended. The percentage of ownership described above is based on an aggregate of 39,780,535 shares of Common Stock, which consist of (i) 38,610,420 shares of Common Stock outstanding as of December 11, 2007, as reported in the issuer’s Annual Report on Form 10-K filed with the Securities and Exchange Commission on December 14, 2007, and (ii) the number of shares of Common Stock issuable to JGD if JGD were to exercise all of its warrants to purchase shares of Common Stock.


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 five percent of the class of securities, check the following o.


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

	The right to receive dividends from, or the proceeds from the sale of, all shares of Common Stock reported in this statement as beneficially owned by JGD is held by York Capital, York Investment, York Select or York Select Trust, as the case may be, all of which are the advisory clients of JGD. JGD itself disclaims beneficial ownership of all shares of Common Stock reported in this statement pursuant to Rule 13d-4 under the Securities Exchange Act of 1934, as amended.

Page 5 of 7 Pages



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

	Not Applicable.

Item 8.	Identification and Classification of Members of the Group.

	Not Applicable.


Item 9.	Notice of Dissolution of Group.

	Not Applicable.

Page 6 of 7 Pages



Item 10.	Certification.

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and 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.

SIGNATURE

After reasonable inquiry and to the best of the knowledge and belief of the undersigned Reporting Person, the undersigned Reporting Person certifies that the information set forth in this statement with respect to it is true, complete and correct.

Dated: January 18, 2008

JGD MANAGEMENT CORP.

By: /s/ Adam J. Semler

Adam J. Semler

Chief Financial Officer