Twitter, ConocoPhillips And Viacom: Fast Money Picks For July 21

On CNBC's Fast Money Final Trade, Pete Najarian said ConocoPhillips COP is going higher. He wants to buy the stock.

Tim Seymour thinks Twitter Inc TWTR should be bought.

Karen Finerman wants to be long volatility. She explained that one way to do that is by purchasing the S&P 500 put options.

Guy Adami believes Viacom, Inc. VIAB is too cheap at current levels.