Take a look at some of Tuesday's midday movers from CNBC's Delivering Alpha conference:
DuPont jumped after Nelson Peltz said Trian Fund Management is amassing a large stake in the Dow component. Separately, Peltz said he wants PepsiCo to acquire Mondelez for $35 to $38 a share and has talked to Pepsi's management. Peltz said he also wants PepsiCo to spin off the beverage business after buying Mondelez.
Caterpillar declined after the heavy-equipment maker became the latest company to be on the hit list of founder and managing partner of Kynikos Associates Jim Chanos.