Fast Money Traders Share Their Thoughts On Fitbit, Freeport-McMoRan Inc. And Delta Air Lines, Inc.

, Brian Kelly spoke about

. Its app was the most downloaded on Apple's app store on Christmas, but Kelly is not impressed. He explained that the value of this company is a function of the size of its network. He doesn't see growth in number of users. David Seaburg agrees with Kelly. He believes that

gross margins are going to decline because of discounts it offers. Seaburg added that the stock is trading at a P/E multiple of 26 and it should be trading at 12 because it is a hardware company. Tim Seymour thinks that

feels like

Inc

and Dan Nathan commented that if

takes on this segment,

is done. Seymour and Kelly have also discussed

. They concluded that the real question for the stock is the price of copper in 2016 and 2017. Kelly doesn't see any catalysts for a significant move higher copper and the moment and Seymour is neutral on the stock. Nathan is a buyer of

. He added that if crude oil stays low,

and

might also move higher.