Fisher Asset Management, the firm led by Ken Fisher (Trades, Portfolio), disclosed in a regulatory filing that its top trades during the first quarter included boosts to its holdings of BHP Group Ltd. ( BHP , Financial) and Amazon.com Inc. ( AMZN , Financial) and reductions to its positions in Cisco Systems Inc. ( CSCO , Financial), The Walt Disney Co. ( DIS , Financial) and Intel Corp. ( INTC , Financial).