CUSIP No: G81477104

	SECURITIES AND EXCHANGE COMMISSION
	Washington, D.C. 20549

SCHEDULE 13G

(Rule 13d-102)

INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT

TO § 240.13d-1(b), (c) AND (d) AND AMENDMENTS THERETO FILED

PURSUANT TO § 240.13d-2.

(Amendment No. 1)*

SINA Corporation
(Name of Issuer)

Ordinary Shares, $0.133 par value per share

(Title of Class of Securities)

G81477104

(CUSIP Number)

December 31, 2020

(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 purposes 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).

CUSIP No: G81477104

	(1)	Names of Reporting Persons Capital Ventures International

	(2)	Check the Appropriate Box if a Member of a Group (See Instructions)
		(a)		¨
		(b)		¨

	(3)	SEC Use Only

	(4)	Citizenship or Place of Organization Cayman Islands

Number of Shares Beneficially Owned by Each Reporting Person With			(5)		Sole Voting Power 0 (1)(2)

			(6)		Shared Voting Power 486,494 (1)

			(7)		Sole Dispositive Power 0 (1)(2)

			(8)		Shared Dispositive Power 486,494 (1)

	(9)	Aggregate Amount Beneficially Owned by Each Reporting Person 486,494 (1)

	(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) 0.8%

	(12)	Type of Reporting Person (See Instructions) CO

(1) G1 Execution Services, LLC, Susquehanna Investment Group and Susquehanna Securities, LLC are affiliated independent broker-dealers which, together with Capital Ventures International and Susquehanna Advisors Group, Inc., may be deemed a group. For purposes of this report, we have indicated that each reporting person has sole voting and dispositive power with respect to the shares beneficially owned by it and that the reporting persons have shared voting and dispositive power with respect to all shares beneficially owned by all of the reporting persons. Each of the reporting persons disclaims beneficial ownership of shares owned directly by another reporting person.

(2) Susquehanna Advisors Group, Inc. is the investment manager to Capital Ventures International and as such may exercise voting and dispositive power over the shares directly owned by Capital Ventures International.

CUSIP No: G81477104

(1)	Names of Reporting Persons Susquehanna Advisors Group, Inc.

(2)	Check the Appropriate Box if a Member of a Group (See Instructions)
	(a)	¨
	(b)	¨

(3)	SEC Use Only

(4)	Citizenship or Place of Organization Pennsylvania

Number of Shares Beneficially Owned by Each Reporting Person With			(5)	Sole Voting Power 0 (1)(2)

			(6)	Shared Voting Power 486,494 (1)

			(7)	Sole Dispositive Power 0 (1)(2)

			(8)	Shared Dispositive Power 486,494 (1)

(9)	Aggregate Amount Beneficially Owned by Each Reporting Person 486,494 (1)

(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) 0.8%

(12)	Type of Reporting Person (See Instructions) CO

CUSIP No: G81477104

(1)	Names of Reporting Persons G1 Execution Services, LLC

(2)	Check the Appropriate Box if a Member of a Group (See Instructions)
	(a)	¨
	(b)	¨

(3)	SEC Use Only

(4)	Citizenship or Place of Organization Illinois

Number of Shares Beneficially Owned by Each Reporting Person With			(5)	Sole Voting Power 241 (1)

			(6)	Shared Voting Power 486,494 (1)

			(7)	Sole Dispositive Power 241 (1)

			(8)	Shared Dispositive Power 486,494 (1)

(9)	Aggregate Amount Beneficially Owned by Each Reporting Person 486,494 (1)

(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) 0.8%

(12)	Type of Reporting Person (See Instructions) BD, OO

CUSIP No: G81477104

(1)	Names of Reporting Persons Susquehanna Investment Group

(2)	Check the Appropriate Box if a Member of a Group (See Instructions)
	(a)	¨
	(b)	¨

(3)	SEC Use Only

(4)	Citizenship or Place of Organization Pennsylvania

Number of Shares Beneficially Owned by Each Reporting Person With			(5)	Sole Voting Power 17,474 (1)

			(6)	Shared Voting Power 486,494 (1)

			(7)	Sole Dispositive Power 17,474 (1)

			(8)	Shared Dispositive Power 486,494 (1)

(9)	Aggregate Amount Beneficially Owned by Each Reporting Person 486,494 (1)

(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) 0.8%

(12)	Type of Reporting Person (See Instructions) BD, PN

CUSIP No: G81477104

	(1)	Names of Reporting Persons Susquehanna Securities, LLC

	(2)	Check the Appropriate Box if a Member of a Group (See Instructions)
		(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 468,779 (1)

			(6)		Shared Voting Power 486,494 (1)

			(7)		Sole Dispositive Power 468,779 (1)

			(8)		Shared Dispositive Power 486,494 (1)

	(9)	Aggregate Amount Beneficially Owned by Each Reporting Person 486,494 (1)

	(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) 0.8%

	(12)	Type of Reporting Person (See Instructions) BD, OO

CUSIP No: G81477104

Item 1.
	(a)	Name of Issuer SINA Corporation (the “Company”)
	(b)	Address of Issuer’s Principal Executive Offices No. 8 SINA Plaza, Courtyard 10, the West Xibeiwang E. Road Haidian District, Beijing 100193, People’s Republic of China

Item 2(a).		Name of Person Filing This statement is filed by the entities listed below, who are collectively referred to herein as “Reporting Persons” with respect to the Ordinary Shares, $0.133 par value per share, of the Company (the “Shares”). (i) Capital Ventures International (ii) Susquehanna Advisors Group, Inc. (iii) G1 Execution Services, LLC (iv) Susquehanna Investment Group (v) Susquehanna Securities, LLC
Item 2(b).		Address of Principal Business Office or, if none, Residence The address of the principal business office of Capital Ventures International is: P.O. Box 897 Windward 1, Regatta Office Park West Bay Road Grand Cayman, KY1-1103 Cayman Islands The address of the principal business office of G1 Execution Services, LLC is: 175 W. Jackson Blvd. Suite 1700 Chicago, IL 60604 The address of the principal business office of each of Susquehanna Advisors Group, Inc., Susquehanna Investment Group and Susquehanna Securities, LLC is: 401 E. City Avenue Suite 220 Bala Cynwyd, PA 19004
Item 2(c).		Citizenship Citizenship is set forth in Row 4 of the cover page for each Reporting Person hereto and is incorporated herein by reference for each such Reporting Person.
Item 2(d).		Title of Class of Securities Ordinary Shares, $0.133 par value per share
Item 2(e)		CUSIP Number G81477104

CUSIP No: 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:
	(a)	¨	Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o).
	(b)	¨	Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c).
	(c)	¨	Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c).
	(d)	¨	Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8).
	(e)	¨	An investment adviser in accordance with §240.13d-1(b)(1)(ii)(E);
	(f)	¨	An employee benefit plan or endowment fund in accordance with §240.13d-1(b)(1)(ii)(F);
	(g)	¨	A parent holding company or control person in accordance with §240.13d-1(b)(1)(ii)(G);
	(h)	¨	A savings association as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
	(i)	¨	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)	¨	A non-U.S. institution in accordance with § 240.13d–1(b)(1)(ii)(J);
	(k)	¨	Group, in accordance with rule 13d–1(b)(1)(ii)(K).
			If filing as a non-U.S. institution in accordance with § 240.13d–1(b)(1)(ii)(J), please specify the type of institution:

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.

The information required by Items 4(a) - (c) is set forth in Rows 5 - 11 of the cover page for each Reporting Person hereto and is incorporated herein by reference for each such Reporting Person.

The number of Shares reported as beneficially owned by Susquehanna Investment Group includes options to buy 16,900 Shares. The number of Shares reported as beneficially owned by Susquehanna Securities, LLC includes options to buy 188,800 Shares.

Exhibit 99.(A)(1) to the Company’s Schedule 13E-3/A, filed on November 20, 2020, indicates that there were 60,010,143 Shares outstanding as of November 20, 2020.

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: x

CUSIP No: G81477104

Item 6.

Ownership of More than Five Percent on Behalf of Another Person

Not applicable.

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

Not applicable.

Item 8.	Identification and Classification of Members of the Group

Not applicable.

Item 9.	Notice of Dissolution of Group

Not applicable.

Item 10.	Certification

By signing below each of the undersigned certifies that, to the best of its 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.

CUSIP No: G81477104

SIGNATURE

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

Dated: February 10, 2021

CAPITAL VENTURES INTERNATIONAL		SUSQUEHANNA ADVISORS GROUP, INC.

By: Susquehanna Advisors Group, Inc. pursuant to a Limited Power of Attorney, a copy of which was previously filed

By:	/s/ Brian Sopinsky		By:	/s/ Brian Sopinsky
Name:	Brian Sopinsky		Name:	Brian Sopinsky
Title:	Assistant Secretary		Title:	Assistant Secretary

G1 EXECUTION SERVICES, LLC

By:	/s/ Brian Sopinsky
Name:	Brian Sopinsky
Title:	Secretary

SUSQUEHANNA INVESTMENT GROUP		SUSQUEHANNA SECURITIES, LLC

By:	/s/ Brian Sopinsky		By:	/s/ Brian Sopinsky
Name:	Brian Sopinsky		Name:	Brian Sopinsky
Title:	General Counsel		Title:	Secretary

CUSIP No: G81477104

EXHIBIT INDEX

EXHIBIT		DESCRIPTION

I		Limited Power of Attorney executed by Capital Ventures International in favor of Susquehanna Advisors Group, Inc., dated as of December 4, 2012*

II		Joint Filing Agreement

*Previously filed

CUSIP No: G81477104

Exhibit II

JOINT FILING AGREEMENT

This will confirm the agreement by and among the undersigned that the Schedule 13G filed with the Securities and Exchange Commission on or about the date hereof with respect to the beneficial ownership by the undersigned of the ordinary shares of SINA Corporation, $0.133 par value per share, is being filed, and all amendments thereto will be filed, on behalf of each of the persons and entities named below in accordance with Rule 13d-1(k) under the Securities Exchange Act of 1934, as amended. This Agreement may be executed in two or more counterparts, each of which shall be deemed an original, but all of which together shall constitute one and the same instrument.

Dated: February 10, 2021

CAPITAL VENTURES INTERNATIONAL		SUSQUEHANNA ADVISORS GROUP, INC.

By: Susquehanna Advisors Group, Inc. pursuant to a Limited Power of Attorney

By:	/s/ Brian Sopinsky		By:	/s/ Brian Sopinsky
Name:	Brian Sopinsky		Name:	Brian Sopinsky
Title:	Assistant Secretary		Title:	Assistant Secretary

G1 EXECUTION SERVICES, LLC

By:	/s/ Brian Sopinsky
Name:	Brian Sopinsky
Title:	Secretary

SUSQUEHANNA INVESTMENT GROUP		SUSQUEHANNA SECURITIES, LLC

By:	/s/ Brian Sopinsky		By:	/s/ Brian Sopinsky
Name:	Brian Sopinsky		Name:	Brian Sopinsky
Title:	General Counsel		Title:	Secretary

SINA CORP SC 13G/A