KEY POINTS
  • "We're starting to see the big rock of silly season" on bitcoin, DoubleLine's Jeffrey Gundlach tells CNBC's Scott Wapner on "Halftime Report."
  • "This is the kind of nutty stuff. The fact we're talking about it 24/7," he said.

DoubleLine Capital CEO Jeffrey Gundlach is skeptical about all the bitcoin speculation.

"We're starting to see the big rock of silly season" on the cryptocurrency, Gundlach told CNBC's Scott Wapner on CNBC's "Halftime Report." "This is the kind of nutty stuff. The fact we're talking about it 24/7."