much money these pharmaceutical companies are putting into research and development, not just keeping the profits. here's how she laid some of it out yesterday on the trail. >> this week i'm announcing a detailed plan to crack down on these expenses. we will start -- we will start by capping how much you have to pay out of pocket for prescription drugs each month. and we're going to hold drug companies accountable as we work to drive down prices. >> reporter: interesting that tweet you mentioned a moment ago from yesterday when hillary clinton sent it out that she was cracking down on pharmaceutical companies if she was elected. that moves markets. the biotech sector took a huge hit. the clinton camp felt like that is fine with them. if wall street is mad at her, that's a fight she wants to pick as she wants to wrap up the democratic nomination. >> we're hearing from analysts that she's trying to win over labor unions. >> reporter: that's right.