Pete Najarian Sees Unusual Option Activity In BlackBerry And Mosaic

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

Najarian sees unusual activity in:

• The Mosaic Co (NYSE:MOS) June $40 calls
• BlackBerry (NYSE:BB) April $9.50

He plans to hold the position in The Mosaic Co for roughly three to four weeks and his Blackberry position expires on Friday, April 30.