SOHU [SOHU COM] SC 13G: CUSIP No. 83408W103 1. Names of Reporting Persons
[CUSIP No. 83408W103 1. Names of Reporting Persons Macquarie Group Limited 2. Check the Appropriate Box if a Member of a Group (See Instructions) x ¨ (a) 3. SEC Use Only 4. Citizenship or Place of Organization Sydney, New South Wales Australia Number of Shares Beneficially Owned by Each Reporting Person With 5. Sole Voting Power 0 6. Shared Voting]