UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 13G

Under the Securities Exchange Act of 1934

(Amendment No.  )*

­­­­­SINA CORPORATION

(Name of Issuer)

Ordinary Shares, $0.133 par value

(Title of Class of Securities)

G81477104

(CUSIP Number)

May 12, 2011

(Date of Event which Requires Filing of this Statement)

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 the disclosures provided in a prior cover page.

The information required in 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).

Continued on following pages

Page 1 of 9 Pages

Exhibit Index:  Page 8

 CUSIP No.:   G81477104  Page 2 of 9 Pages

1.	Names of Reporting Persons. JAT CAPITAL MANAGEMENT, L.P.
2.	Check the Appropriate Box if a Member of a Group (a) [  ] (b) [  ]
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                              0
		6.	Shared Voting Power                         3,384,385
		7.	Sole Dispositive Power                     0
		8.	Shared Dispositive Power                3,384,385
9.	Aggregate Amount Beneficially Owned by Each Reporting Person 3,384,385
10.	Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [  ]
11.	Percent of Class Represented by Amount in Row (9) 5.6%
12.	Type of Reporting Person: PN

 CUSIP No.:   G81477104  Page 3 of 9 Pages

1.	Names of Reporting Persons. JOHN THALER
2.	Check the Appropriate Box if a Member of a Group (a) [  ] (b) [  ]
3.	SEC Use Only
4.	Citizenship or Place of Organization United States of America
Number of Shares Beneficially Owned by Each Reporting Person With		5.	Sole Voting Power                                  0
		6.	Shared Voting Power                             3,384,385
		7.	Sole Dispositive Power                         0
		8.	Shared Dispositive Power                    3,384,385
9.	Aggregate Amount Beneficially Owned by Each Reporting Person 3,384,385
10.	Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [  ]
11.	Percent of Class Represented by Amount in Row (9) 5.6%
12.	Type of Reporting Person: IN, HC

 Page 4 of 9 Pages

Item 1(a). Name of Issuer:

SINA Corporation (the “Issuer”)

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

37F, Jin Mao Tower, 88 Century Boulevard, Pudong, Shanghai 200121, China

Item 2(a). Name of Person Filing:

This Statement is filed on behalf of each of the following persons (collectively, the “Reporting Persons”):

i)   JAT Capital Management, L.P. (“Capital Management”); and

ii)  John Thaler (“Mr. Thaler”).

This Statement relates to Shares (as defined herein) held for the account of JAT Capital  Master Fund, Ltd. (the “Master Fund”).

Capital Management serves as the investment manager to the Master Fund.  Mr. Thaler serves as the managing member of Capital Management and the portfolio manager of the Master Fund.  In such capacities, Capital Management and Mr. Thaler may be deemed to have voting and dispositive power over the Shares held for the Master Fund.

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

The address of the principal business office of each of Capital Management and Mr. Thaler is 601 Lexington Avenue, 51st Floor, New York, NY  10022.

Item 2(c). Citizenship:

i)   Capital Management is a Delaware limited partnership;

ii)  Mr. Thaler is a citizen of the United States of America.

Item 2(d). Title of Class of Securities:

Ordinary Shares, $0.133 par value (“Shares”)

Item 2(e). CUSIP Number:

G81477104

Item 3.  If This Statement is Filed Pursuant to §§240.13d-1(b) or 240.13d-2(b) or (c), Check Whether the Person Filing is a:

This Item 3 is not applicable.

 Page 5 of 9 Pages

Item 4. Ownership:

Item 4(a) Amount Beneficially Owned

   As of May 12, 2011, each of the Reporting Persons was deemed the beneficial owner of 3,406,651 Shares held for the account of the Master Fund.  This amount consisted of 1,836,651 Shares held for the account of the Master Fund and 1,570,000 Shares which the Reporting Persons were entitled to receive upon exercise of options held for the account of the Master Fund.

   As of May 23, 2011, each of the Reporting Persons may be deemed the beneficial owner of 3,384,385 Shares held for the account of the Master Fund.  This amount consists of 1,814,385 Shares held for the account of the Master Fund, and 1,570,000 Shares which the Reporting Persons are entitled to receive upon exercise of options held for the account of the Master Fund.

Item 4(b) Percent of Class:

   As of May 12, 2011, each of the Reporting Persons was deemed the beneficial owner of 5.6% of Shares outstanding.

   As of May 23, 2011, each of the Reporting Persons may be deemed the beneficial owner of approximately 5.6% of Shares outstanding.  (There were 60,918,842Shares outstanding as of December 31, 2009, according to the Issuer’s amended annual report on Form 20-F/A, filed June 10, 2010.)

Item 4(c) Number of Shares of which such person has:

Capital Management and Mr. Thaler:
(i) Sole power to vote or to direct the vote:	0
(ii) Shared power to vote or to direct the vote:	3,384,385
(iii) Sole power to dispose or to direct the disposition of:	0
(iv) Shared power to dispose or to direct the disposition of:	3,384,385

Item 5. Ownership of Five Percent or Less of a Class:

This Item 5 is not applicable.

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

This Item 6 is not applicable.

 Page 6 of 9 Pages

Item 7. Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on By the Parent Holding Company or Control Person:

See disclosure in Item 2 hereof.

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

This Item 8 is not applicable.

Item 9. Notice of Dissolution of Group:

This Item 9 is not applicable.

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.

 

 Page 7 of 9 Pages

SIGNATURE

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

JAT CAPITAL MANAGEMENT, L.P.

By:  /s/ John Thaler                               

Name:  John Thaler

Title:    Managing Member

/s/ John Thaler                                     

John Thaler

May 23, 2011

Page 8 of 9 Pages

EXHIBIT INDEX

Ex. Page No.

1 Joint Filing Agreement 9

 Page 9 of 9 Pages

EXHIBIT 1

JOINT FILING AGREEMENT

The undersigned agree that the statement on Schedule 13G with respect to the Ordinary Shares of SINA Corporation, dated as of May 23, 2011, is, and any amendments thereto (including amendments on Schedule 13D) signed by each of the undersigned shall be, filed on behalf of each of them pursuant to and in accordance with the provisions of Rule 13d-1(k) under the Securities Exchange Act of 1934, as amended.

JAT CAPITAL MANAGEMENT, L.P.

By:  /s/ John Thaler                               

Name:  John Thaler

Title:    Managing Member

/s/ John Thaler                                      

John Thaler

May 23, 2011