KEY POINTS
  • Concerns over Italy could spill over into the U.S. stock market by way of a strengthening dollar, B. Riley FBR's Mark Grant says.
  • "We're just at the beginning of the commotion" in Rome, Grant predicts.
  • He sees two possible scenarios: Italy could leave the euro or get kicked out over refusing to adhere to EU budgetary demands.

Concerns over Italy's political tug of war could spill into the U.S. stock market by way of a strengthening dollar, B. Riley FBR's Mark Grant told CNBC on Wednesday.

"We're just at the beginning of the commotion" in Rome, said the veteran strategist, referring to whether Italy might ultimately seek to leave the euro, causing a similar upheaval to when the U.K. voted to leave the overall European Union.