Some of the most prominent names in biotechnology plunged on Thursday as the Nasdaq headed for its worst day in nearly two years.
Read MoreThe latest on the markets
Jim Cramer goes over all the signals in the market that a recession is coming.
Jim Cramer goes off the charts to find out what caused the massive plummet in oil prices. Wild ride ahead?
Despite the rout in oil, don't expect U.S. shale companies to start cutting capital spending or jobs, analyst Mike Kelly said.
Check out the companies making headlines after the bell Tuesday: Container Store, VMware, Rosetta Stone.