Fortinet (FTNT -5.5%) heads south following a downgrade to Hold from Wunderlich; the firm is...

Fortinet (FTNT -5.5%) heads south following a downgrade to Hold from Wunderlich; the firm is worried about competitive pressures, and sees downside risk to consensus Q1 and 2013 estimates. JMP downgraded the UTM security hardware leader a week ago on competitive grounds. EMC and VMware's guidance might also be pressuring shares.