First Pacific Advisors (Trades, Portfolio) disclosed this week in a regulatory filing that its top five trades during the first quarter included boosts to its positions in Amazon.com Inc. ( AMZN , Financial) and Netflix Inc. ( NFLX , Financial) and reductions to its holdings of Activision Blizzard Inc. ( ATVI , Financial), Broadcom Inc. ( AVGO , Financial) and Wells Fargo & Co. ( WFC , Financial).