You don't day trade blue chip unless you're trading margins and obsessively following the news around those companies in an attempt to time the market. It sounds like he made a bunch of conservative moves and mostly made small profits and losses.

Day trading is about losing $15,000 on Monday and making $38,000 on Wednesday and losing $18,000 on Friday and coming out $5,000 ahead for the week. It requires a vast pool of capital to draw from in order to make real money because you will lose and you will lose hard. You just play enough that it trends positive.