Daniel Loeb (Trades, Portfolio), manager of Third Point Offshore, disclosed in a regulatory filing that his firm's top trades during the first quarter included new holdings in CSX Corp. ( CSX , Financial) and Alcoa Corp. ( AA , Financial), a 90% reduction to its stake in Amazon.com Inc. ( AMZN , Financial) and the closure of its positions in Alphabet Inc. ( GOOGL , Financial), Upstart Holdings Inc. ( UPST , Financial) and Accenture PLC ( ACN , Financial).