CNBC Contributor Herb Greenberg discusses what's causing Herbalife's comeback today.
CNBC's Kate Kelly and CNBC Contributors Ron Insana and Herb Greenberg discuss the ongoing saga between Pershing Square's Bill Ackman and Carl Icahn over Herbalife.
Herb Greenberg, Pacific Square Research Partner, discusses whether or not he believes short sellers are dead.
Elon Musk's Tesla is buying Elon Musk's SolarCity in an all-stock deal worth $2.6 billion, and some Tesla stockholders are not happy about it. CNBC's Phil LeBeau reports. With CNBC Contributor Herb Greenberg.