Company:  SINA CORP (SINA)
Form Type:  20-F
Filing Date:  5/31/2011 
CIK:  0001094005 
Address:  1313 GENEVA DRIVE 
City, State, Zip:  SUNNYVALE, California 94089 
Telephone:  (408) 548-0000 
Fiscal Year:  12/31 
Last Trade
Last Trade: 
$58.41  
Change: 
-2.31 (-3.80%)  
Trade Time: 
04:00 PM EST  
Market Cap: 
$3.90B
Description of Business
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  FORM 20-F
    PART I
      Item 1. Identity of Directors, Senior Management and Advisers
      Item 2. Offer Statistics and Expected Timetable
      Item 3. Key Information
      Item 4. Information on the Company
      Item 5. Operating and Financial Review and Prospects
      Item 6. Directors, Senior Management and Employees
        NAME AND TITLE
        OPTIONS
        BENEFICIAL OWNERS
      Item 8. Financial Information
      Item 9. The Offer and Listing
      Item 10. Additional Information
      Item 11. Quantitative and Qualitative Disclosures About ...
    PART II
      Item 13. Defaults, Dividend Arrearages and Delinquencies
      Item 14. Material Modifications to the Rights of Security ...
      Item 15. Controls and Procedures
      Item 16E. Purchases of Equity Securities by the Issuer and ...
      Item 16F. Change in Registrant's Certifying Accountant
    PART III
      Item 17. Financial Statements
      Item 18. Financial Statements
        INCOME STATEMENT
    SIGNATURES
    Report of Independent Registered Public Accounting Firm
    BALANCE SHEET
    INCOME STATEMENT
    STOCKHOLDERS EQUITY
    CASH FLOW
    NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
      BALANCE SHEET
  EXHIBIT 8.1
  EXHIBIT 12.1
  EXHIBIT 12.2
  EXHIBIT 13.1
  EXHIBIT 13.2
  EXHIBIT 15.1
  EXHIBIT 15.2
  EXHIBIT 15.3
  EXHIBIT 15.4