marc levine will tell us the big hedge funds and why to ditch the rest.irst we start off with a story captivated main street and wall street. >> that is whit coins digital currency hit another all time high. >> reporter: hi, melissa, bitcoin has been on the rise the southern ascension over the past few months has been dramatic. it took a year to go from $500 to $1,500. in a few weeks, they recently crossed 2500. in total, the market cap gained about $23 billion in value this year. what's behind the third? asia. specifically japan and korea have stepped up buying, investors view it as digital gold. >> wright is getting on board. they announced they are developing commercial applications of bitcoin underlying technology. they gave it a thumbs up this week. there is concerns, there is no reg la story body. >> meanwhile, short positions have declined by 10%. bet coin could see selling intensified. mellissa. >> thank you, seema mody, one of our traders say there could be a risk. bk. >> listen, bitcoin has had a tremendous run. i have been in here, unbelievable