CYOU [Changyou.com] SC 13G/A: (Original Filing)
[(1) Names of Reporting Persons. Whale Rock Capital Management 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 1,039,222 (6) Shared Voting Power 0 (7)]