Jim Cramer: Be Cautious With Under Armour

Stay cautious on Under Armour (UA) - Get Report shares and Nike (NKE) - Get Report too, said TheStreet's Jim Cramer. He said there is a rebellion against buying expensive stocks, although he said he would be 'less cautious' with fellow sports apparel-maker Lululemon (LULU) - Get Report .

At the time of publication, Jim Cramer's charitable trust Action Alerts PLUS held no positions in stocks mentioned.