The market experienced a nasty reversal on Thursday after trading to record highs earlier in the day. The panel at CNBC's" Fast Money" dissected the change of heart in the market for investors.According to Pete Najarian, the market reversal was caused by a JPMorgan analyst who lowered his estimates on Baidu.com ( BIDU). Jeff Macke disagreed with Pete and doesn't think the Baidu downgrade meant anything; it just gave traders an excuse to sell. Furthermore, he suggests the selling will continue on Friday. Karen Finerman found the reversal was interesting and like Macke expects a lot more to go. Guy Adami tells investors to take profits on EMC ( EMC) and VMWare ( VMW) after volume suggested to him a move lower is in the cards. Investors can buy these back cheaper after they come in.