Jon Najarian Sees Unusual Option Activity In Jumia And Constellium

On CNBC's "Fast Money Halftime Report," Jon Najarian gave some unusual option activity plays.

Najarian sees unusual activity in:

• Jumia Technologies JMIA March $48 calls
• Constellium CSTM May $17 calls

He plans to hold his position in Jumia for a week and his position in Constellium for approximately six weeks.